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mutter/cogl/cogl-texture-2d-sliced.c

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[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2007,2008,2009 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
Remove mentions of the FSF address Since using addresses that might change is something that finally the FSF acknowledge as a plausible scenario (after changing address twice), the license blurb in the source files should use the URI for getting the license in case the library did not come with it. Not that URIs cannot possibly change, but at least it's easier to set up a redirection at the same place. As a side note: this commit closes the oldes bug in Clutter's bug report tool. http://bugzilla.openedhand.com/show_bug.cgi?id=521
2010-03-01 12:56:10 +00:00
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
*
* Authors:
* Matthew Allum <mallum@openedhand.com>
* Neil Roberts <neil@linux.intel.com>
* Robert Bragg <robert@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl.h"
#include "cogl-internal.h"
#include "cogl-util.h"
#include "cogl-bitmap.h"
#include "cogl-bitmap-private.h"
#include "cogl-texture-private.h"
#include "cogl-texture-2d-sliced-private.h"
#include "cogl-texture-driver.h"
#include "cogl-context.h"
#include "cogl-handle.h"
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
#include "cogl-spans.h"
cogl: remove redundant _cogl_journal_flush prototype There was a redundant _cogl_journal_flush function prototype in cogl-primitives.h
2010-02-10 18:18:30 +00:00
#include "cogl-journal-private.h"
material: split the texture unit management out In general cogl-material.c has become far to large to manage in one source file. As one of the ways to try and break it down this patch starts to move some of lower level texture unit state management out into cogl-material-opengl.c. The naming is such because the plan is to follow up and migrate the very GL specific state flushing code into the same file.
2010-07-10 01:53:38 +00:00
#include "cogl-material-opengl-private.h"
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
#include <string.h>
#include <stdlib.h>
#include <math.h>
static void _cogl_texture_2d_sliced_free (CoglTexture2DSliced *tex_2ds);
Don't define public cogl_is_* functions for internal types This adds a COGL_OBJECT_INTERNAL_DEFINE macro and friends that are the same as COGL_OBJECT_DEFINE except that they prefix the cogl_is_* function with an underscore so that it doesn't get exported in the shared library.
2010-07-09 17:46:31 +00:00
COGL_TEXTURE_INTERNAL_DEFINE (Texture2DSliced, texture_2d_sliced);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
static const CoglTextureVtable cogl_texture_2d_sliced_vtable;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* To differentiate between texture coordinates of a specific, real, slice
* texture and the texture coordinates of the composite, sliced texture, the
* coordinates of the sliced texture are called "virtual" coordinates and the
* coordinates of slices are called "slice" coordinates. */
/* This function lets you iterate all the slices that lie within the given
* virtual coordinates of the parent sliced texture. */
/* Note: no guarantee is given about the order in which the slices will be
* visited */
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
static void
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
_cogl_texture_2d_sliced_foreach_sub_texture_in_region (
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
CoglTexture *tex,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
float virtual_tx_1,
float virtual_ty_1,
float virtual_tx_2,
float virtual_ty_2,
CoglTextureSliceCallback callback,
void *user_data)
{
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
float width = tex_2ds->width;
float height = tex_2ds->height;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
CoglSpanIter iter_x;
CoglSpanIter iter_y;
/* Slice spans are stored in denormalized coordinates, and this is what
* the _cogl_span_iter_* funcs expect to be given, so we scale the given
* virtual coordinates by the texture size to denormalize.
*/
/* XXX: I wonder if it's worth changing how we store spans so we can avoid
* the need to denormalize here */
virtual_tx_1 *= width;
virtual_ty_1 *= height;
virtual_tx_2 *= width;
virtual_ty_2 *= height;
/* Iterate the y axis of the virtual rectangle */
for (_cogl_span_iter_begin (&iter_y,
tex_2ds->slice_y_spans,
height,
virtual_ty_1,
virtual_ty_2);
!_cogl_span_iter_end (&iter_y);
_cogl_span_iter_next (&iter_y))
{
float y_intersect_start = iter_y.intersect_start;
float y_intersect_end = iter_y.intersect_end;
float slice_ty1;
float slice_ty2;
/* Discard slices out of rectangle early */
if (!iter_y.intersects)
continue;
if (iter_y.flipped)
{
y_intersect_start = iter_y.intersect_end;
y_intersect_end = iter_y.intersect_start;
}
/* Localize slice texture coordinates */
slice_ty1 = y_intersect_start - iter_y.pos;
slice_ty2 = y_intersect_end - iter_y.pos;
CoglTexture2DSliced: Handle TEXTURE_RECTANGLE_ARB In _cogl_texture_2d_sliced_foreach_sub_texture_in_region(), don't assert that the target is GL_TEXTURE_2D; instead conditionalize normalization on the target. http://bugzilla.openedhand.com/show_bug.cgi?id=2015
2010-03-01 19:04:20 +00:00
if (tex_2ds->gl_target == GL_TEXTURE_2D)
{
/* Normalize slice texture coordinates */
slice_ty1 /= iter_y.span->size;
slice_ty2 /= iter_y.span->size;
}
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Iterate the x axis of the virtual rectangle */
for (_cogl_span_iter_begin (&iter_x,
tex_2ds->slice_x_spans,
width,
virtual_tx_1,
virtual_tx_2);
!_cogl_span_iter_end (&iter_x);
_cogl_span_iter_next (&iter_x))
{
float slice_coords[4];
float virtual_coords[4];
float x_intersect_start = iter_x.intersect_start;
float x_intersect_end = iter_x.intersect_end;
float slice_tx1;
float slice_tx2;
GLuint gl_handle;
/* Discard slices out of rectangle early */
if (!iter_x.intersects)
continue;
if (iter_x.flipped)
{
x_intersect_start = iter_x.intersect_end;
x_intersect_end = iter_x.intersect_start;
}
/* Localize slice texture coordinates */
slice_tx1 = x_intersect_start - iter_x.pos;
slice_tx2 = x_intersect_end - iter_x.pos;
/* Pluck out opengl texture object for this slice */
gl_handle = g_array_index (tex_2ds->slice_gl_handles, GLuint,
iter_y.index * iter_x.array->len +
iter_x.index);
CoglTexture2DSliced: Handle TEXTURE_RECTANGLE_ARB In _cogl_texture_2d_sliced_foreach_sub_texture_in_region(), don't assert that the target is GL_TEXTURE_2D; instead conditionalize normalization on the target. http://bugzilla.openedhand.com/show_bug.cgi?id=2015
2010-03-01 19:04:20 +00:00
if (tex_2ds->gl_target == GL_TEXTURE_2D)
{
/* Normalize slice texture coordinates */
slice_tx1 /= iter_x.span->size;
slice_tx2 /= iter_x.span->size;
}
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
slice_coords[0] = slice_tx1;
slice_coords[1] = slice_ty1;
slice_coords[2] = slice_tx2;
slice_coords[3] = slice_ty2;
virtual_coords[0] = x_intersect_start / width;
virtual_coords[1] = y_intersect_start / height;
virtual_coords[2] = x_intersect_end / width;
virtual_coords[3] = y_intersect_end / height;
callback (tex,
gl_handle,
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
tex_2ds->gl_target,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
slice_coords,
virtual_coords,
user_data);
}
}
}
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-10 01:57:32 +00:00
static guint8 *
cogl: Move data only used for upload out of CoglTexture The CoglTexture struct previously contained some fields which are only used to upload data such as the CoglBitmap and the source GL format. These are now moved to a separate CoglTextureUploadData struct which only exists for the duration of one of the cogl_texture_*_new functions. In cogl-texture there are utility functions which operate on this new struct rather than on CoglTexture directly. Some of the fields that were previously stored in the CoglBitmap struct are now copied to the CoglTexture such as the width, height, format and internal GL format. The rowstride was previously stored in CoglTexture and this was publicly accessible with the cogl_texture_get_rowstride function. However this doesn't seem to be a useful function because there is no need to use the same rowstride again when uploading or downloading new data. Instead cogl_texture_get_rowstride now just calculates a suitable rowstride from the format and width of the texture.
2009-11-26 17:32:52 +00:00
_cogl_texture_2d_sliced_allocate_waste_buffer (CoglTexture2DSliced *tex_2ds,
CoglPixelFormat format)
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
{
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
CoglSpan *last_x_span;
CoglSpan *last_y_span;
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-10 01:57:32 +00:00
guint8 *waste_buf = NULL;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* If the texture has any waste then allocate a buffer big enough to
fill the gaps */
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
last_x_span = &g_array_index (tex_2ds->slice_x_spans, CoglSpan,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
tex_2ds->slice_x_spans->len - 1);
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
last_y_span = &g_array_index (tex_2ds->slice_y_spans, CoglSpan,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
tex_2ds->slice_y_spans->len - 1);
if (last_x_span->waste > 0 || last_y_span->waste > 0)
{
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-10 01:57:32 +00:00
int bpp = _cogl_get_format_bpp (format);
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
CoglSpan *first_x_span
= &g_array_index (tex_2ds->slice_x_spans, CoglSpan, 0);
CoglSpan *first_y_span
= &g_array_index (tex_2ds->slice_y_spans, CoglSpan, 0);
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-10 01:57:32 +00:00
unsigned int right_size = first_y_span->size * last_x_span->waste;
unsigned int bottom_size = first_x_span->size * last_y_span->waste;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
waste_buf = g_malloc (MAX (right_size, bottom_size) * bpp);
}
return waste_buf;
}
static gboolean
cogl: Move data only used for upload out of CoglTexture The CoglTexture struct previously contained some fields which are only used to upload data such as the CoglBitmap and the source GL format. These are now moved to a separate CoglTextureUploadData struct which only exists for the duration of one of the cogl_texture_*_new functions. In cogl-texture there are utility functions which operate on this new struct rather than on CoglTexture directly. Some of the fields that were previously stored in the CoglBitmap struct are now copied to the CoglTexture such as the width, height, format and internal GL format. The rowstride was previously stored in CoglTexture and this was publicly accessible with the cogl_texture_get_rowstride function. However this doesn't seem to be a useful function because there is no need to use the same rowstride again when uploading or downloading new data. Instead cogl_texture_get_rowstride now just calculates a suitable rowstride from the format and width of the texture.
2009-11-26 17:32:52 +00:00
_cogl_texture_2d_sliced_upload_to_gl (CoglTexture2DSliced *tex_2ds,
cogl: Let GL do the format conversion when uploading texture data Cogl accepts a pixel format for both the data in memory and the internal format to be used for the texture. If they do not match then it would convert them using the CoglBitmap functions before uploading the data. However, GL also lets you specify both formats so it makes more sense to let GL do the conversion. The driver may need the texture in a specific format so it may end up being converted anyway. The cogl_texture_upload_data functions have been removed and replaced with a single function to prepare the bitmap. This will only do the premultiplication conversion because that is the only part that GL can't do directly.
2010-02-01 12:11:58 +00:00
CoglBitmap *bmp,
GLenum gl_intformat,
GLenum gl_format,
GLenum gl_type)
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
{
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
CoglSpan *x_span;
CoglSpan *y_span;
GLuint gl_handle;
int bpp;
int x, y;
guint8 *waste_buf;
CoglPixelFormat bmp_format;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
bmp_format = _cogl_bitmap_get_format (bmp);
bpp = _cogl_get_format_bpp (bmp_format);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl: Let GL do the format conversion when uploading texture data Cogl accepts a pixel format for both the data in memory and the internal format to be used for the texture. If they do not match then it would convert them using the CoglBitmap functions before uploading the data. However, GL also lets you specify both formats so it makes more sense to let GL do the conversion. The driver may need the texture in a specific format so it may end up being converted anyway. The cogl_texture_upload_data functions have been removed and replaced with a single function to prepare the bitmap. This will only do the premultiplication conversion because that is the only part that GL can't do directly.
2010-02-01 12:11:58 +00:00
waste_buf = _cogl_texture_2d_sliced_allocate_waste_buffer (tex_2ds,
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
bmp_format);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Iterate vertical slices */
for (y = 0; y < tex_2ds->slice_y_spans->len; ++y)
{
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
y_span = &g_array_index (tex_2ds->slice_y_spans, CoglSpan, y);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Iterate horizontal slices */
for (x = 0; x < tex_2ds->slice_x_spans->len; ++x)
{
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-10 01:57:32 +00:00
int slice_num = y * tex_2ds->slice_x_spans->len + x;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
x_span = &g_array_index (tex_2ds->slice_x_spans, CoglSpan, x);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Pick the gl texture object handle */
gl_handle = g_array_index (tex_2ds->slice_gl_handles, GLuint, slice_num);
_cogl_texture_driver_upload_subregion_to_gl (
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
tex_2ds->gl_target,
cogl: Move data only used for upload out of CoglTexture The CoglTexture struct previously contained some fields which are only used to upload data such as the CoglBitmap and the source GL format. These are now moved to a separate CoglTextureUploadData struct which only exists for the duration of one of the cogl_texture_*_new functions. In cogl-texture there are utility functions which operate on this new struct rather than on CoglTexture directly. Some of the fields that were previously stored in the CoglBitmap struct are now copied to the CoglTexture such as the width, height, format and internal GL format. The rowstride was previously stored in CoglTexture and this was publicly accessible with the cogl_texture_get_rowstride function. However this doesn't seem to be a useful function because there is no need to use the same rowstride again when uploading or downloading new data. Instead cogl_texture_get_rowstride now just calculates a suitable rowstride from the format and width of the texture.
2009-11-26 17:32:52 +00:00
gl_handle,
material: Avoid redundant glBindTexture calls This adds a _cogl_bind_gl_texture_transient function that should be used instead of glBindTexture so we can have a consistent cache of the textures bound to each texture unit so we can avoid some redundant binding.
2010-04-26 09:01:43 +00:00
tex_2ds->is_foreign,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
x_span->start, /* src x */
y_span->start, /* src y */
0, /* dst x */
0, /* dst y */
x_span->size - x_span->waste, /* width */
y_span->size - y_span->waste, /* height */
cogl: Let GL do the format conversion when uploading texture data Cogl accepts a pixel format for both the data in memory and the internal format to be used for the texture. If they do not match then it would convert them using the CoglBitmap functions before uploading the data. However, GL also lets you specify both formats so it makes more sense to let GL do the conversion. The driver may need the texture in a specific format so it may end up being converted anyway. The cogl_texture_upload_data functions have been removed and replaced with a single function to prepare the bitmap. This will only do the premultiplication conversion because that is the only part that GL can't do directly.
2010-02-01 12:11:58 +00:00
bmp,
gl_format,
gl_type);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Keep a copy of the first pixel if needed */
if (tex_2ds->first_pixels)
{
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
guint8 *data;
if ((data = _cogl_bitmap_map (bmp, COGL_BUFFER_ACCESS_READ, 0)))
{
memcpy (tex_2ds->first_pixels[slice_num].data,
data + x_span->start * bpp
+ y_span->start * _cogl_bitmap_get_rowstride (bmp),
bpp);
_cogl_bitmap_unmap (bmp);
}
cogl: Let GL do the format conversion when uploading texture data Cogl accepts a pixel format for both the data in memory and the internal format to be used for the texture. If they do not match then it would convert them using the CoglBitmap functions before uploading the data. However, GL also lets you specify both formats so it makes more sense to let GL do the conversion. The driver may need the texture in a specific format so it may end up being converted anyway. The cogl_texture_upload_data functions have been removed and replaced with a single function to prepare the bitmap. This will only do the premultiplication conversion because that is the only part that GL can't do directly.
2010-02-01 12:11:58 +00:00
tex_2ds->first_pixels[slice_num].gl_format = gl_format;
tex_2ds->first_pixels[slice_num].gl_type = gl_type;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
}
/* Fill the waste with a copies of the rightmost pixels */
if (x_span->waste > 0)
{
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
int bmp_rowstride = _cogl_bitmap_get_rowstride (bmp);
guint8 *bmp_data = _cogl_bitmap_map (bmp,
COGL_BUFFER_ACCESS_READ, 0);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
if (bmp_data)
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
{
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
const guint8 *src = bmp_data
+ y_span->start * bmp_rowstride
+ (x_span->start + x_span->size - x_span->waste - 1) * bpp;
guint8 *dst = waste_buf;
unsigned int wx, wy;
for (wy = 0; wy < y_span->size - y_span->waste; wy++)
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
{
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
for (wx = 0; wx < x_span->waste; wx++)
{
memcpy (dst, src, bpp);
dst += bpp;
}
src += bmp_rowstride;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
}
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
_cogl_bitmap_unmap (bmp);
_cogl_texture_driver_prep_gl_for_pixels_upload (
x_span->waste * bpp,
bpp);
GE( glTexSubImage2D (tex_2ds->gl_target, 0,
x_span->size - x_span->waste,
0,
x_span->waste,
y_span->size - y_span->waste,
gl_format, gl_type,
waste_buf) );
}
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
}
if (y_span->waste > 0)
{
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
int bmp_rowstride = _cogl_bitmap_get_rowstride (bmp);
guint8 *bmp_data = _cogl_bitmap_map (bmp,
COGL_BUFFER_ACCESS_READ, 0);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
if (bmp_data)
{
const guint8 *src = bmp_data
+ ((y_span->start + y_span->size - y_span->waste - 1)
* bmp_rowstride)
+ x_span->start * bpp;
guint8 *dst = waste_buf;
unsigned int wy, wx;
for (wy = 0; wy < y_span->waste; wy++)
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
{
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
memcpy (dst, src, (x_span->size - x_span->waste) * bpp);
dst += (x_span->size - x_span->waste) * bpp;
for (wx = 0; wx < x_span->waste; wx++)
{
memcpy (dst, dst - bpp, bpp);
dst += bpp;
}
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
}
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
_cogl_bitmap_unmap (bmp);
_cogl_texture_driver_prep_gl_for_pixels_upload (
x_span->size * bpp,
bpp);
GE( glTexSubImage2D (tex_2ds->gl_target, 0,
0,
y_span->size - y_span->waste,
x_span->size,
y_span->waste,
gl_format, gl_type,
waste_buf) );
}
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
}
}
}
if (waste_buf)
g_free (waste_buf);
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
tex_2ds->mipmaps_dirty = TRUE;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
return TRUE;
}
static gboolean
_cogl_texture_2d_sliced_upload_subregion_to_gl (CoglTexture2DSliced *tex_2ds,
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-10 01:57:32 +00:00
int src_x,
int src_y,
int dst_x,
int dst_y,
int width,
int height,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
CoglBitmap *source_bmp,
GLuint source_gl_format,
GLuint source_gl_type)
{
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
CoglSpan *x_span;
CoglSpan *y_span;
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-10 01:57:32 +00:00
int bpp;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
CoglSpanIter x_iter;
CoglSpanIter y_iter;
GLuint gl_handle;
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-10 01:57:32 +00:00
int source_x = 0, source_y = 0;
int inter_w = 0, inter_h = 0;
int local_x = 0, local_y = 0;
guint8 *waste_buf;
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
CoglPixelFormat source_format;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
source_format = _cogl_bitmap_get_format (source_bmp);
bpp = _cogl_get_format_bpp (source_format);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl: Move data only used for upload out of CoglTexture The CoglTexture struct previously contained some fields which are only used to upload data such as the CoglBitmap and the source GL format. These are now moved to a separate CoglTextureUploadData struct which only exists for the duration of one of the cogl_texture_*_new functions. In cogl-texture there are utility functions which operate on this new struct rather than on CoglTexture directly. Some of the fields that were previously stored in the CoglBitmap struct are now copied to the CoglTexture such as the width, height, format and internal GL format. The rowstride was previously stored in CoglTexture and this was publicly accessible with the cogl_texture_get_rowstride function. However this doesn't seem to be a useful function because there is no need to use the same rowstride again when uploading or downloading new data. Instead cogl_texture_get_rowstride now just calculates a suitable rowstride from the format and width of the texture.
2009-11-26 17:32:52 +00:00
waste_buf =
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
_cogl_texture_2d_sliced_allocate_waste_buffer (tex_2ds, source_format);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Iterate vertical spans */
for (source_y = src_y,
_cogl_span_iter_begin (&y_iter,
tex_2ds->slice_y_spans,
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
tex_2ds->height,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
dst_y,
dst_y + height);
!_cogl_span_iter_end (&y_iter);
_cogl_span_iter_next (&y_iter),
source_y += inter_h )
{
/* Discard slices out of the subregion early */
if (!y_iter.intersects)
{
inter_h = 0;
continue;
}
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
y_span = &g_array_index (tex_2ds->slice_y_spans, CoglSpan,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
y_iter.index);
/* Iterate horizontal spans */
for (source_x = src_x,
_cogl_span_iter_begin (&x_iter,
tex_2ds->slice_x_spans,
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
tex_2ds->width,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
dst_x,
dst_x + width);
!_cogl_span_iter_end (&x_iter);
_cogl_span_iter_next (&x_iter),
source_x += inter_w )
{
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-10 01:57:32 +00:00
int slice_num;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Discard slices out of the subregion early */
if (!x_iter.intersects)
{
inter_w = 0;
continue;
}
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
x_span = &g_array_index (tex_2ds->slice_x_spans, CoglSpan,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
x_iter.index);
/* Pick intersection width and height */
inter_w = (x_iter.intersect_end - x_iter.intersect_start);
inter_h = (y_iter.intersect_end - y_iter.intersect_start);
/* Localize intersection top-left corner to slice*/
local_x = (x_iter.intersect_start - x_iter.pos);
local_y = (y_iter.intersect_start - y_iter.pos);
slice_num = y_iter.index * tex_2ds->slice_x_spans->len + x_iter.index;
/* Pick slice GL handle */
gl_handle = g_array_index (tex_2ds->slice_gl_handles, GLuint, slice_num);
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
_cogl_texture_driver_upload_subregion_to_gl (tex_2ds->gl_target,
cogl: Move data only used for upload out of CoglTexture The CoglTexture struct previously contained some fields which are only used to upload data such as the CoglBitmap and the source GL format. These are now moved to a separate CoglTextureUploadData struct which only exists for the duration of one of the cogl_texture_*_new functions. In cogl-texture there are utility functions which operate on this new struct rather than on CoglTexture directly. Some of the fields that were previously stored in the CoglBitmap struct are now copied to the CoglTexture such as the width, height, format and internal GL format. The rowstride was previously stored in CoglTexture and this was publicly accessible with the cogl_texture_get_rowstride function. However this doesn't seem to be a useful function because there is no need to use the same rowstride again when uploading or downloading new data. Instead cogl_texture_get_rowstride now just calculates a suitable rowstride from the format and width of the texture.
2009-11-26 17:32:52 +00:00
gl_handle,
material: Avoid redundant glBindTexture calls This adds a _cogl_bind_gl_texture_transient function that should be used instead of glBindTexture so we can have a consistent cache of the textures bound to each texture unit so we can avoid some redundant binding.
2010-04-26 09:01:43 +00:00
tex_2ds->is_foreign,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
source_x,
source_y,
local_x, /* dst x */
local_y, /* dst x */
inter_w, /* width */
inter_h, /* height */
source_bmp,
source_gl_format,
cogl: Move data only used for upload out of CoglTexture The CoglTexture struct previously contained some fields which are only used to upload data such as the CoglBitmap and the source GL format. These are now moved to a separate CoglTextureUploadData struct which only exists for the duration of one of the cogl_texture_*_new functions. In cogl-texture there are utility functions which operate on this new struct rather than on CoglTexture directly. Some of the fields that were previously stored in the CoglBitmap struct are now copied to the CoglTexture such as the width, height, format and internal GL format. The rowstride was previously stored in CoglTexture and this was publicly accessible with the cogl_texture_get_rowstride function. However this doesn't seem to be a useful function because there is no need to use the same rowstride again when uploading or downloading new data. Instead cogl_texture_get_rowstride now just calculates a suitable rowstride from the format and width of the texture.
2009-11-26 17:32:52 +00:00
source_gl_type);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Keep a copy of the first pixel if needed */
if (tex_2ds->first_pixels && local_x == 0 && local_y == 0)
{
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
guint8 *data;
if ((data = _cogl_bitmap_map (source_bmp,
COGL_BUFFER_ACCESS_READ, 0)))
{
memcpy (tex_2ds->first_pixels[slice_num].data,
data + source_x * bpp
+ source_y * _cogl_bitmap_get_rowstride (source_bmp),
bpp);
_cogl_bitmap_unmap (source_bmp);
}
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
tex_2ds->first_pixels[slice_num].gl_format = source_gl_format;
tex_2ds->first_pixels[slice_num].gl_type = source_gl_type;
}
/* If the x_span is sliced and the upload touches the
rightmost pixels then fill the waste with copies of the
pixels */
if (x_span->waste > 0
&& local_x < x_span->size - x_span->waste
&& local_x + inter_w >= x_span->size - x_span->waste)
{
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
int bmp_rowstride = _cogl_bitmap_get_rowstride (source_bmp);
guint8 *bmp_data = _cogl_bitmap_map (source_bmp,
COGL_BUFFER_ACCESS_READ, 0);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
if (bmp_data)
{
const guint8 *src;
guint8 *dst;
unsigned int wx, wy;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
src = bmp_data
+ (src_y + ((int)y_iter.intersect_start)
- dst_y)
* bmp_rowstride
+ (src_x + x_span->start + x_span->size - x_span->waste
- dst_x - 1)
* bpp;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
dst = waste_buf;
for (wy = 0; wy < inter_h; wy++)
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
{
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
for (wx = 0; wx < x_span->waste; wx++)
{
memcpy (dst, src, bpp);
dst += bpp;
}
src += bmp_rowstride;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
}
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
_cogl_bitmap_unmap (source_bmp);
_cogl_texture_driver_prep_gl_for_pixels_upload (
x_span->waste * bpp,
bpp);
GE( glTexSubImage2D (tex_2ds->gl_target, 0,
x_span->size - x_span->waste,
local_y,
x_span->waste,
inter_h,
source_gl_format,
source_gl_type,
waste_buf) );
}
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
}
/* same for the bottom-most pixels */
if (y_span->waste > 0
&& local_y < y_span->size - y_span->waste
&& local_y + inter_h >= y_span->size - y_span->waste)
{
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
int bmp_rowstride = _cogl_bitmap_get_rowstride (source_bmp);
guint8 *bmp_data = _cogl_bitmap_map (source_bmp,
COGL_BUFFER_ACCESS_READ, 0);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
if (bmp_data)
{
const guint8 *src;
guint8 *dst;
unsigned int wy, wx;
unsigned int copy_width;
src = bmp_data
+ (src_x + ((int)x_iter.intersect_start)
- dst_x)
* bpp
+ (src_y + y_span->start + y_span->size - y_span->waste
- dst_y - 1)
* bmp_rowstride;
dst = waste_buf;
if (local_x + inter_w >= x_span->size - x_span->waste)
copy_width = x_span->size - local_x;
else
copy_width = inter_w;
for (wy = 0; wy < y_span->waste; wy++)
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
{
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
memcpy (dst, src, inter_w * bpp);
dst += inter_w * bpp;
for (wx = inter_w; wx < copy_width; wx++)
{
memcpy (dst, dst - bpp, bpp);
dst += bpp;
}
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
}
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
_cogl_bitmap_unmap (source_bmp);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
_cogl_texture_driver_prep_gl_for_pixels_upload (
copy_width * bpp,
bpp);
GE( glTexSubImage2D (tex_2ds->gl_target, 0,
local_x,
y_span->size - y_span->waste,
copy_width,
y_span->waste,
source_gl_format,
source_gl_type,
waste_buf) );
}
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
}
}
}
if (waste_buf)
g_free (waste_buf);
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
tex_2ds->mipmaps_dirty = TRUE;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
return TRUE;
}
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-10 01:57:32 +00:00
static int
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
_cogl_rect_slices_for_size (int size_to_fill,
int max_span_size,
int max_waste,
GArray *out_spans)
{
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-10 01:57:32 +00:00
int n_spans = 0;
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
CoglSpan span;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Init first slice span */
span.start = 0;
span.size = max_span_size;
span.waste = 0;
/* Repeat until whole area covered */
while (size_to_fill >= span.size)
{
/* Add another slice span of same size */
if (out_spans)
g_array_append_val (out_spans, span);
span.start += span.size;
size_to_fill -= span.size;
n_spans++;
}
/* Add one last smaller slice span */
if (size_to_fill > 0)
{
span.size = size_to_fill;
if (out_spans)
g_array_append_val (out_spans, span);
n_spans++;
}
return n_spans;
}
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-10 01:57:32 +00:00
static int
_cogl_pot_slices_for_size (int size_to_fill,
int max_span_size,
int max_waste,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
GArray *out_spans)
{
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-10 01:57:32 +00:00
int n_spans = 0;
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
CoglSpan span;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Init first slice span */
span.start = 0;
span.size = max_span_size;
span.waste = 0;
/* Fix invalid max_waste */
if (max_waste < 0)
max_waste = 0;
while (TRUE)
{
/* Is the whole area covered? */
if (size_to_fill > span.size)
{
/* Not yet - add a span of this size */
if (out_spans)
g_array_append_val (out_spans, span);
span.start += span.size;
size_to_fill -= span.size;
n_spans++;
}
else if (span.size - size_to_fill <= max_waste)
{
/* Yes and waste is small enough */
span.waste = span.size - size_to_fill;
if (out_spans)
g_array_append_val (out_spans, span);
return ++n_spans;
}
else
{
/* Yes but waste is too large */
while (span.size - size_to_fill > max_waste)
{
span.size /= 2;
g_assert (span.size > 0);
}
}
}
/* Can't get here */
return 0;
}
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
static void
Split the wrap mode of _cogl_texture_set_wrap_mode into three GL supports setting different wrap modes for the s, t and r coordinates so we should design the backend interface to support that also. The r coordinate is not currently used by any of the backends but we might as well have it to make life easier if we ever add support for 3D textures. http://bugzilla.openedhand.com/show_bug.cgi?id=2063
2010-03-25 17:29:22 +00:00
_cogl_texture_2d_sliced_set_wrap_mode_parameters (CoglTexture *tex,
GLenum wrap_mode_s,
GLenum wrap_mode_t,
Rename the third texure coordinate from 'r' to 'p' Using 'r' to name the third component is problematic because that is commonly used to represent the red component of a vector representing a color. Under GLSL this is awkward because the texture swizzling for a vector uses a single letter for each component and the names for colors, textures and positions are synonymous. GLSL works around this by naming the components of the texture s, t, p and q. Cogl already effectively already exposes this naming because it exposes GLSL so it makes sense to use that naming consistently. Another alternative could be u, v and w. This is what Blender and Direct3D use. However the w component conflicts with the w component of a position vertex.
2010-07-12 16:01:32 +00:00
GLenum wrap_mode_p)
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
{
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
Split the wrap mode of _cogl_texture_set_wrap_mode into three GL supports setting different wrap modes for the s, t and r coordinates so we should design the backend interface to support that also. The r coordinate is not currently used by any of the backends but we might as well have it to make life easier if we ever add support for 3D textures. http://bugzilla.openedhand.com/show_bug.cgi?id=2063
2010-03-25 17:29:22 +00:00
/* Only set the wrap mode if it's different from the current value
to avoid too many GL calls. Texture 2D doesn't make use of the r
coordinate so we can ignore its wrap mode */
if (tex_2ds->wrap_mode_s != wrap_mode_s ||
tex_2ds->wrap_mode_t != wrap_mode_t)
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
{
int i;
for (i = 0; i < tex_2ds->slice_gl_handles->len; i++)
{
GLuint texnum = g_array_index (tex_2ds->slice_gl_handles, GLuint, i);
material: Avoid redundant glBindTexture calls This adds a _cogl_bind_gl_texture_transient function that should be used instead of glBindTexture so we can have a consistent cache of the textures bound to each texture unit so we can avoid some redundant binding.
2010-04-26 09:01:43 +00:00
_cogl_bind_gl_texture_transient (tex_2ds->gl_target,
texnum,
tex_2ds->is_foreign);
Split the wrap mode of _cogl_texture_set_wrap_mode into three GL supports setting different wrap modes for the s, t and r coordinates so we should design the backend interface to support that also. The r coordinate is not currently used by any of the backends but we might as well have it to make life easier if we ever add support for 3D textures. http://bugzilla.openedhand.com/show_bug.cgi?id=2063
2010-03-25 17:29:22 +00:00
GE( glTexParameteri (tex_2ds->gl_target,
GL_TEXTURE_WRAP_S, wrap_mode_s) );
GE( glTexParameteri (tex_2ds->gl_target,
GL_TEXTURE_WRAP_T, wrap_mode_t) );
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
}
Split the wrap mode of _cogl_texture_set_wrap_mode into three GL supports setting different wrap modes for the s, t and r coordinates so we should design the backend interface to support that also. The r coordinate is not currently used by any of the backends but we might as well have it to make life easier if we ever add support for 3D textures. http://bugzilla.openedhand.com/show_bug.cgi?id=2063
2010-03-25 17:29:22 +00:00
tex_2ds->wrap_mode_s = wrap_mode_s;
tex_2ds->wrap_mode_t = wrap_mode_t;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
}
}
static gboolean
cogl: Move data only used for upload out of CoglTexture The CoglTexture struct previously contained some fields which are only used to upload data such as the CoglBitmap and the source GL format. These are now moved to a separate CoglTextureUploadData struct which only exists for the duration of one of the cogl_texture_*_new functions. In cogl-texture there are utility functions which operate on this new struct rather than on CoglTexture directly. Some of the fields that were previously stored in the CoglBitmap struct are now copied to the CoglTexture such as the width, height, format and internal GL format. The rowstride was previously stored in CoglTexture and this was publicly accessible with the cogl_texture_get_rowstride function. However this doesn't seem to be a useful function because there is no need to use the same rowstride again when uploading or downloading new data. Instead cogl_texture_get_rowstride now just calculates a suitable rowstride from the format and width of the texture.
2009-11-26 17:32:52 +00:00
_cogl_texture_2d_sliced_slices_create (CoglTexture2DSliced *tex_2ds,
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-10 01:57:32 +00:00
int width, int height,
cogl: Let GL do the format conversion when uploading texture data Cogl accepts a pixel format for both the data in memory and the internal format to be used for the texture. If they do not match then it would convert them using the CoglBitmap functions before uploading the data. However, GL also lets you specify both formats so it makes more sense to let GL do the conversion. The driver may need the texture in a specific format so it may end up being converted anyway. The cogl_texture_upload_data functions have been removed and replaced with a single function to prepare the bitmap. This will only do the premultiplication conversion because that is the only part that GL can't do directly.
2010-02-01 12:11:58 +00:00
GLenum gl_intformat,
GLenum gl_format,
GLenum gl_type)
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
{
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-10 01:57:32 +00:00
int max_width;
int max_height;
GLuint *gl_handles;
int n_x_slices;
int n_y_slices;
int n_slices;
int x, y;
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
CoglSpan *x_span;
CoglSpan *y_span;
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-10 01:57:32 +00:00
const GLfloat transparent_color[4] = { 0x00, 0x00, 0x00, 0x00 };
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-10 01:57:32 +00:00
int (*slices_for_size) (int, int, int, GArray*);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Initialize size of largest slice according to supported features */
if (cogl_features_available (COGL_FEATURE_TEXTURE_NPOT))
{
cogl: Let GL do the format conversion when uploading texture data Cogl accepts a pixel format for both the data in memory and the internal format to be used for the texture. If they do not match then it would convert them using the CoglBitmap functions before uploading the data. However, GL also lets you specify both formats so it makes more sense to let GL do the conversion. The driver may need the texture in a specific format so it may end up being converted anyway. The cogl_texture_upload_data functions have been removed and replaced with a single function to prepare the bitmap. This will only do the premultiplication conversion because that is the only part that GL can't do directly.
2010-02-01 12:11:58 +00:00
max_width = width;
max_height = height;
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
tex_2ds->gl_target = GL_TEXTURE_2D;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
slices_for_size = _cogl_rect_slices_for_size;
}
else
{
cogl: Let GL do the format conversion when uploading texture data Cogl accepts a pixel format for both the data in memory and the internal format to be used for the texture. If they do not match then it would convert them using the CoglBitmap functions before uploading the data. However, GL also lets you specify both formats so it makes more sense to let GL do the conversion. The driver may need the texture in a specific format so it may end up being converted anyway. The cogl_texture_upload_data functions have been removed and replaced with a single function to prepare the bitmap. This will only do the premultiplication conversion because that is the only part that GL can't do directly.
2010-02-01 12:11:58 +00:00
max_width = cogl_util_next_p2 (width);
max_height = cogl_util_next_p2 (height);
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
tex_2ds->gl_target = GL_TEXTURE_2D;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
slices_for_size = _cogl_pot_slices_for_size;
}
/* Negative number means no slicing forced by the user */
if (tex_2ds->max_waste <= -1)
{
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
CoglSpan span;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Check if size supported else bail out */
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
if (!_cogl_texture_driver_size_supported (tex_2ds->gl_target,
cogl: Let GL do the format conversion when uploading texture data Cogl accepts a pixel format for both the data in memory and the internal format to be used for the texture. If they do not match then it would convert them using the CoglBitmap functions before uploading the data. However, GL also lets you specify both formats so it makes more sense to let GL do the conversion. The driver may need the texture in a specific format so it may end up being converted anyway. The cogl_texture_upload_data functions have been removed and replaced with a single function to prepare the bitmap. This will only do the premultiplication conversion because that is the only part that GL can't do directly.
2010-02-01 12:11:58 +00:00
gl_intformat,
gl_type,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
max_width,
max_height))
{
return FALSE;
}
n_x_slices = 1;
n_y_slices = 1;
/* Init span arrays */
tex_2ds->slice_x_spans = g_array_sized_new (FALSE, FALSE,
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
sizeof (CoglSpan),
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
1);
tex_2ds->slice_y_spans = g_array_sized_new (FALSE, FALSE,
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
sizeof (CoglSpan),
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
1);
/* Add a single span for width and height */
span.start = 0;
span.size = max_width;
cogl: Let GL do the format conversion when uploading texture data Cogl accepts a pixel format for both the data in memory and the internal format to be used for the texture. If they do not match then it would convert them using the CoglBitmap functions before uploading the data. However, GL also lets you specify both formats so it makes more sense to let GL do the conversion. The driver may need the texture in a specific format so it may end up being converted anyway. The cogl_texture_upload_data functions have been removed and replaced with a single function to prepare the bitmap. This will only do the premultiplication conversion because that is the only part that GL can't do directly.
2010-02-01 12:11:58 +00:00
span.waste = max_width - width;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
g_array_append_val (tex_2ds->slice_x_spans, span);
span.size = max_height;
cogl: Let GL do the format conversion when uploading texture data Cogl accepts a pixel format for both the data in memory and the internal format to be used for the texture. If they do not match then it would convert them using the CoglBitmap functions before uploading the data. However, GL also lets you specify both formats so it makes more sense to let GL do the conversion. The driver may need the texture in a specific format so it may end up being converted anyway. The cogl_texture_upload_data functions have been removed and replaced with a single function to prepare the bitmap. This will only do the premultiplication conversion because that is the only part that GL can't do directly.
2010-02-01 12:11:58 +00:00
span.waste = max_height - height;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
g_array_append_val (tex_2ds->slice_y_spans, span);
}
else
{
/* Decrease the size of largest slice until supported by GL */
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
while (!_cogl_texture_driver_size_supported (tex_2ds->gl_target,
cogl: Let GL do the format conversion when uploading texture data Cogl accepts a pixel format for both the data in memory and the internal format to be used for the texture. If they do not match then it would convert them using the CoglBitmap functions before uploading the data. However, GL also lets you specify both formats so it makes more sense to let GL do the conversion. The driver may need the texture in a specific format so it may end up being converted anyway. The cogl_texture_upload_data functions have been removed and replaced with a single function to prepare the bitmap. This will only do the premultiplication conversion because that is the only part that GL can't do directly.
2010-02-01 12:11:58 +00:00
gl_intformat,
gl_type,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
max_width,
max_height))
{
/* Alternate between width and height */
if (max_width > max_height)
max_width /= 2;
else
max_height /= 2;
if (max_width == 0 || max_height == 0)
return FALSE;
}
/* Determine the slices required to cover the bitmap area */
cogl: Let GL do the format conversion when uploading texture data Cogl accepts a pixel format for both the data in memory and the internal format to be used for the texture. If they do not match then it would convert them using the CoglBitmap functions before uploading the data. However, GL also lets you specify both formats so it makes more sense to let GL do the conversion. The driver may need the texture in a specific format so it may end up being converted anyway. The cogl_texture_upload_data functions have been removed and replaced with a single function to prepare the bitmap. This will only do the premultiplication conversion because that is the only part that GL can't do directly.
2010-02-01 12:11:58 +00:00
n_x_slices = slices_for_size (width,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
max_width, tex_2ds->max_waste,
NULL);
cogl: Let GL do the format conversion when uploading texture data Cogl accepts a pixel format for both the data in memory and the internal format to be used for the texture. If they do not match then it would convert them using the CoglBitmap functions before uploading the data. However, GL also lets you specify both formats so it makes more sense to let GL do the conversion. The driver may need the texture in a specific format so it may end up being converted anyway. The cogl_texture_upload_data functions have been removed and replaced with a single function to prepare the bitmap. This will only do the premultiplication conversion because that is the only part that GL can't do directly.
2010-02-01 12:11:58 +00:00
n_y_slices = slices_for_size (height,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
max_height, tex_2ds->max_waste,
NULL);
/* Init span arrays with reserved size */
tex_2ds->slice_x_spans = g_array_sized_new (FALSE, FALSE,
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
sizeof (CoglSpan),
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
n_x_slices);
tex_2ds->slice_y_spans = g_array_sized_new (FALSE, FALSE,
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
sizeof (CoglSpan),
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
n_y_slices);
/* Fill span arrays with info */
cogl: Let GL do the format conversion when uploading texture data Cogl accepts a pixel format for both the data in memory and the internal format to be used for the texture. If they do not match then it would convert them using the CoglBitmap functions before uploading the data. However, GL also lets you specify both formats so it makes more sense to let GL do the conversion. The driver may need the texture in a specific format so it may end up being converted anyway. The cogl_texture_upload_data functions have been removed and replaced with a single function to prepare the bitmap. This will only do the premultiplication conversion because that is the only part that GL can't do directly.
2010-02-01 12:11:58 +00:00
slices_for_size (width,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
max_width, tex_2ds->max_waste,
tex_2ds->slice_x_spans);
cogl: Let GL do the format conversion when uploading texture data Cogl accepts a pixel format for both the data in memory and the internal format to be used for the texture. If they do not match then it would convert them using the CoglBitmap functions before uploading the data. However, GL also lets you specify both formats so it makes more sense to let GL do the conversion. The driver may need the texture in a specific format so it may end up being converted anyway. The cogl_texture_upload_data functions have been removed and replaced with a single function to prepare the bitmap. This will only do the premultiplication conversion because that is the only part that GL can't do directly.
2010-02-01 12:11:58 +00:00
slices_for_size (height,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
max_height, tex_2ds->max_waste,
tex_2ds->slice_y_spans);
}
/* Init and resize GL handle array */
n_slices = n_x_slices * n_y_slices;
tex_2ds->slice_gl_handles = g_array_sized_new (FALSE, FALSE,
sizeof (GLuint),
n_slices);
g_array_set_size (tex_2ds->slice_gl_handles, n_slices);
/* Allocate some space to store a copy of the first pixel of each
slice. This is only needed if glGenerateMipmap (which is part of
the FBO extension) is not available */
if (cogl_features_available (COGL_FEATURE_OFFSCREEN))
tex_2ds->first_pixels = NULL;
else
tex_2ds->first_pixels = g_new (CoglTexturePixel, n_slices);
/* Wrap mode not yet set */
Split the wrap mode of _cogl_texture_set_wrap_mode into three GL supports setting different wrap modes for the s, t and r coordinates so we should design the backend interface to support that also. The r coordinate is not currently used by any of the backends but we might as well have it to make life easier if we ever add support for 3D textures. http://bugzilla.openedhand.com/show_bug.cgi?id=2063
2010-03-25 17:29:22 +00:00
tex_2ds->wrap_mode_s = GL_FALSE;
tex_2ds->wrap_mode_t = GL_FALSE;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Generate a "working set" of GL texture objects
* (some implementations might supported faster
* re-binding between textures inside a set) */
gl_handles = (GLuint*) tex_2ds->slice_gl_handles->data;
cogl: new textures sould have GL_TEXTURE_MIN_FILTER set to GL_LINEAR The only way the user has to set the mipmap filters is through the material/layer API. This API defaults to GL_LINEAR/GL_LINEAR for the max and min filters. With the main use case of cogl being 2D interfaces, it makes sense do default to GL_LINEAR for the min filter. When creating new textures, we did not set any filter on them, using OpenGL defaults': GL_NEAREST_MIPMAP_LINEAR for the min filter and GL_LINEAR for the max filter. This will make the driver allocate memory for the mipmap tree, memory that will not be used in the nominal case (as the material API defaults to GL_LINEAR). This patch tries to ensure that the min filter is set to GL_LINEAR before any glTexImage*() call is done on the texture by setting the filter when generating new OpenGL handles.
2010-01-25 11:21:05 +00:00
_cogl_texture_driver_gen (GL_TEXTURE_2D, n_slices, gl_handles);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Init each GL texture object */
for (y = 0; y < n_y_slices; ++y)
{
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
y_span = &g_array_index (tex_2ds->slice_y_spans, CoglSpan, y);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
for (x = 0; x < n_x_slices; ++x)
{
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
x_span = &g_array_index (tex_2ds->slice_x_spans, CoglSpan, x);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl debug: Makes COGL_DEBUG=all|verbose|help more useful COGL_DEBUG=all wasn't previously useful as there are several options that change the behaviour of Cogl and all together wouldn't help anyone debug anything. This patch makes it so COGL_DEBUG=all|verbose now only enables options that don't change the behaviour of Cogl, i.e. they only affect the amount of noise we'll print to a terminal. In addition to that this patch also improves the output from COGL_DEBUG=help so we now print a table of options including one liner descriptions of what each option enables.
2010-02-17 14:38:11 +00:00
COGL_NOTE (SLICING, "CREATE SLICE (%d,%d)\tsize (%d,%d)",
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
x, y,
x_span->size - x_span->waste,
y_span->size - y_span->waste);
/* Setup texture parameters */
material: Avoid redundant glBindTexture calls This adds a _cogl_bind_gl_texture_transient function that should be used instead of glBindTexture so we can have a consistent cache of the textures bound to each texture unit so we can avoid some redundant binding.
2010-04-26 09:01:43 +00:00
_cogl_bind_gl_texture_transient (tex_2ds->gl_target,
gl_handles[y * n_x_slices + x],
FALSE);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
_cogl_texture_driver_try_setting_gl_border_color (tex_2ds->gl_target,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
transparent_color);
/* Pass NULL data to init size and internal format */
cogl: Let GL do the format conversion when uploading texture data Cogl accepts a pixel format for both the data in memory and the internal format to be used for the texture. If they do not match then it would convert them using the CoglBitmap functions before uploading the data. However, GL also lets you specify both formats so it makes more sense to let GL do the conversion. The driver may need the texture in a specific format so it may end up being converted anyway. The cogl_texture_upload_data functions have been removed and replaced with a single function to prepare the bitmap. This will only do the premultiplication conversion because that is the only part that GL can't do directly.
2010-02-01 12:11:58 +00:00
GE( glTexImage2D (tex_2ds->gl_target, 0, gl_intformat,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
x_span->size, y_span->size, 0,
analysis: FALSE/0 used in pointer context While this is totally fine (0 in the pointer context will be converted in the right internal NULL representation, which could be a value with some bits to 1), I believe it's clearer to use NULL in the pointer context. It seems that, in most case, it's more an overlook than a deliberate choice to use FALSE/0 as NULL, eg. copying a _COGL_GET_CONTEXT (ctx, 0) or a g_return_val_if_fail (cond, 0) from a function returning a gboolean.
2010-05-27 07:28:29 +00:00
gl_format, gl_type, NULL) );
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
}
}
return TRUE;
}
static void
_cogl_texture_2d_sliced_slices_free (CoglTexture2DSliced *tex_2ds)
{
if (tex_2ds->slice_x_spans != NULL)
g_array_free (tex_2ds->slice_x_spans, TRUE);
if (tex_2ds->slice_y_spans != NULL)
g_array_free (tex_2ds->slice_y_spans, TRUE);
if (tex_2ds->slice_gl_handles != NULL)
{
material: Avoid redundant glBindTexture calls This adds a _cogl_bind_gl_texture_transient function that should be used instead of glBindTexture so we can have a consistent cache of the textures bound to each texture unit so we can avoid some redundant binding.
2010-04-26 09:01:43 +00:00
int i;
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
if (tex_2ds->is_foreign == FALSE)
material: Avoid redundant glBindTexture calls This adds a _cogl_bind_gl_texture_transient function that should be used instead of glBindTexture so we can have a consistent cache of the textures bound to each texture unit so we can avoid some redundant binding.
2010-04-26 09:01:43 +00:00
for (i = 0; i < tex_2ds->slice_gl_handles->len; i++)
{
GLuint texture =
g_array_index (tex_2ds->slice_gl_handles, GLuint, i);
_cogl_delete_gl_texture (texture);
}
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
g_array_free (tex_2ds->slice_gl_handles, TRUE);
}
if (tex_2ds->first_pixels != NULL)
g_free (tex_2ds->first_pixels);
}
static void
_cogl_texture_2d_sliced_free (CoglTexture2DSliced *tex_2ds)
{
_cogl_texture_2d_sliced_slices_free (tex_2ds);
material: Avoid redundant glBindTexture calls This adds a _cogl_bind_gl_texture_transient function that should be used instead of glBindTexture so we can have a consistent cache of the textures bound to each texture unit so we can avoid some redundant binding.
2010-04-26 09:01:43 +00:00
/* Chain up */
_cogl_texture_free (COGL_TEXTURE (tex_2ds));
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
}
cogl: Move data only used for upload out of CoglTexture The CoglTexture struct previously contained some fields which are only used to upload data such as the CoglBitmap and the source GL format. These are now moved to a separate CoglTextureUploadData struct which only exists for the duration of one of the cogl_texture_*_new functions. In cogl-texture there are utility functions which operate on this new struct rather than on CoglTexture directly. Some of the fields that were previously stored in the CoglBitmap struct are now copied to the CoglTexture such as the width, height, format and internal GL format. The rowstride was previously stored in CoglTexture and this was publicly accessible with the cogl_texture_get_rowstride function. However this doesn't seem to be a useful function because there is no need to use the same rowstride again when uploading or downloading new data. Instead cogl_texture_get_rowstride now just calculates a suitable rowstride from the format and width of the texture.
2009-11-26 17:32:52 +00:00
static gboolean
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
_cogl_texture_2d_sliced_init_base (CoglTexture2DSliced *tex_2ds,
int width,
int height,
GLenum gl_intformat,
GLenum gl_format,
GLenum gl_type,
CoglPixelFormat internal_format)
cogl: Move data only used for upload out of CoglTexture The CoglTexture struct previously contained some fields which are only used to upload data such as the CoglBitmap and the source GL format. These are now moved to a separate CoglTextureUploadData struct which only exists for the duration of one of the cogl_texture_*_new functions. In cogl-texture there are utility functions which operate on this new struct rather than on CoglTexture directly. Some of the fields that were previously stored in the CoglBitmap struct are now copied to the CoglTexture such as the width, height, format and internal GL format. The rowstride was previously stored in CoglTexture and this was publicly accessible with the cogl_texture_get_rowstride function. However this doesn't seem to be a useful function because there is no need to use the same rowstride again when uploading or downloading new data. Instead cogl_texture_get_rowstride now just calculates a suitable rowstride from the format and width of the texture.
2009-11-26 17:32:52 +00:00
{
CoglTexture *tex = COGL_TEXTURE (tex_2ds);
tex->vtable = &cogl_texture_2d_sliced_vtable;
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
tex_2ds->is_foreign = FALSE;
tex_2ds->auto_mipmap = FALSE;
tex_2ds->mipmaps_dirty = TRUE;
cogl: Move data only used for upload out of CoglTexture The CoglTexture struct previously contained some fields which are only used to upload data such as the CoglBitmap and the source GL format. These are now moved to a separate CoglTextureUploadData struct which only exists for the duration of one of the cogl_texture_*_new functions. In cogl-texture there are utility functions which operate on this new struct rather than on CoglTexture directly. Some of the fields that were previously stored in the CoglBitmap struct are now copied to the CoglTexture such as the width, height, format and internal GL format. The rowstride was previously stored in CoglTexture and this was publicly accessible with the cogl_texture_get_rowstride function. However this doesn't seem to be a useful function because there is no need to use the same rowstride again when uploading or downloading new data. Instead cogl_texture_get_rowstride now just calculates a suitable rowstride from the format and width of the texture.
2009-11-26 17:32:52 +00:00
tex_2ds->first_pixels = NULL;
tex_2ds->slice_x_spans = NULL;
tex_2ds->slice_y_spans = NULL;
tex_2ds->slice_gl_handles = NULL;
cogl: new textures sould have GL_TEXTURE_MIN_FILTER set to GL_LINEAR The only way the user has to set the mipmap filters is through the material/layer API. This API defaults to GL_LINEAR/GL_LINEAR for the max and min filters. With the main use case of cogl being 2D interfaces, it makes sense do default to GL_LINEAR for the min filter. When creating new textures, we did not set any filter on them, using OpenGL defaults': GL_NEAREST_MIPMAP_LINEAR for the min filter and GL_LINEAR for the max filter. This will make the driver allocate memory for the mipmap tree, memory that will not be used in the nominal case (as the material API defaults to GL_LINEAR). This patch tries to ensure that the min filter is set to GL_LINEAR before any glTexImage*() call is done on the texture by setting the filter when generating new OpenGL handles.
2010-01-25 11:21:05 +00:00
/* We default to GL_LINEAR for both filters */
tex_2ds->min_filter = GL_LINEAR;
tex_2ds->mag_filter = GL_LINEAR;
cogl: Move data only used for upload out of CoglTexture The CoglTexture struct previously contained some fields which are only used to upload data such as the CoglBitmap and the source GL format. These are now moved to a separate CoglTextureUploadData struct which only exists for the duration of one of the cogl_texture_*_new functions. In cogl-texture there are utility functions which operate on this new struct rather than on CoglTexture directly. Some of the fields that were previously stored in the CoglBitmap struct are now copied to the CoglTexture such as the width, height, format and internal GL format. The rowstride was previously stored in CoglTexture and this was publicly accessible with the cogl_texture_get_rowstride function. However this doesn't seem to be a useful function because there is no need to use the same rowstride again when uploading or downloading new data. Instead cogl_texture_get_rowstride now just calculates a suitable rowstride from the format and width of the texture.
2009-11-26 17:32:52 +00:00
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
/* Create slices for the given format and size */
if (!_cogl_texture_2d_sliced_slices_create (tex_2ds,
width,
height,
gl_intformat,
gl_format,
gl_type))
return FALSE;
cogl: Move data only used for upload out of CoglTexture The CoglTexture struct previously contained some fields which are only used to upload data such as the CoglBitmap and the source GL format. These are now moved to a separate CoglTextureUploadData struct which only exists for the duration of one of the cogl_texture_*_new functions. In cogl-texture there are utility functions which operate on this new struct rather than on CoglTexture directly. Some of the fields that were previously stored in the CoglBitmap struct are now copied to the CoglTexture such as the width, height, format and internal GL format. The rowstride was previously stored in CoglTexture and this was publicly accessible with the cogl_texture_get_rowstride function. However this doesn't seem to be a useful function because there is no need to use the same rowstride again when uploading or downloading new data. Instead cogl_texture_get_rowstride now just calculates a suitable rowstride from the format and width of the texture.
2009-11-26 17:32:52 +00:00
cogl: Let GL do the format conversion when uploading texture data Cogl accepts a pixel format for both the data in memory and the internal format to be used for the texture. If they do not match then it would convert them using the CoglBitmap functions before uploading the data. However, GL also lets you specify both formats so it makes more sense to let GL do the conversion. The driver may need the texture in a specific format so it may end up being converted anyway. The cogl_texture_upload_data functions have been removed and replaced with a single function to prepare the bitmap. This will only do the premultiplication conversion because that is the only part that GL can't do directly.
2010-02-01 12:11:58 +00:00
tex_2ds->gl_format = gl_intformat;
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
tex_2ds->width = width;
tex_2ds->height = height;
cogl-texture-2d-sliced: Store the internal format not image format The 'format' member of CoglTexture2DSliced is returned by cogl_texture_get_format. All of the other backends return the internal format of the GL texture in this case. However the sliced backend was returning the format of the image data used to create the texture. It doesn't make any sense to retain this information because it doesn't necessarily indicate the format of the actual texture. This patch changes it to store the internal format instead.
2010-07-14 12:21:54 +00:00
tex_2ds->format = internal_format;
cogl: Move data only used for upload out of CoglTexture The CoglTexture struct previously contained some fields which are only used to upload data such as the CoglBitmap and the source GL format. These are now moved to a separate CoglTextureUploadData struct which only exists for the duration of one of the cogl_texture_*_new functions. In cogl-texture there are utility functions which operate on this new struct rather than on CoglTexture directly. Some of the fields that were previously stored in the CoglBitmap struct are now copied to the CoglTexture such as the width, height, format and internal GL format. The rowstride was previously stored in CoglTexture and this was publicly accessible with the cogl_texture_get_rowstride function. However this doesn't seem to be a useful function because there is no need to use the same rowstride again when uploading or downloading new data. Instead cogl_texture_get_rowstride now just calculates a suitable rowstride from the format and width of the texture.
2009-11-26 17:32:52 +00:00
return TRUE;
}
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
CoglHandle
_cogl_texture_2d_sliced_new_with_size (unsigned int width,
unsigned int height,
CoglTextureFlags flags,
CoglPixelFormat internal_format)
{
cogl: Move data only used for upload out of CoglTexture The CoglTexture struct previously contained some fields which are only used to upload data such as the CoglBitmap and the source GL format. These are now moved to a separate CoglTextureUploadData struct which only exists for the duration of one of the cogl_texture_*_new functions. In cogl-texture there are utility functions which operate on this new struct rather than on CoglTexture directly. Some of the fields that were previously stored in the CoglBitmap struct are now copied to the CoglTexture such as the width, height, format and internal GL format. The rowstride was previously stored in CoglTexture and this was publicly accessible with the cogl_texture_get_rowstride function. However this doesn't seem to be a useful function because there is no need to use the same rowstride again when uploading or downloading new data. Instead cogl_texture_get_rowstride now just calculates a suitable rowstride from the format and width of the texture.
2009-11-26 17:32:52 +00:00
CoglTexture2DSliced *tex_2ds;
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
GLenum gl_intformat;
GLenum gl_format;
GLenum gl_type;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Since no data, we need some internal format */
if (internal_format == COGL_PIXEL_FORMAT_ANY)
[cogl-texture-2d-sliced] allow COGL_FORMAT_ANY with _new_with_size() It's useful when initialzing offscreen draw buffers to be able to ask Cogl to create a texture of a given size and with the default internal pixel format.
2009-10-31 00:01:44 +00:00
internal_format = COGL_PIXEL_FORMAT_RGBA_8888_PRE;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Init texture with empty bitmap */
tex_2ds = g_new (CoglTexture2DSliced, 1);
cogl: Move data only used for upload out of CoglTexture The CoglTexture struct previously contained some fields which are only used to upload data such as the CoglBitmap and the source GL format. These are now moved to a separate CoglTextureUploadData struct which only exists for the duration of one of the cogl_texture_*_new functions. In cogl-texture there are utility functions which operate on this new struct rather than on CoglTexture directly. Some of the fields that were previously stored in the CoglBitmap struct are now copied to the CoglTexture such as the width, height, format and internal GL format. The rowstride was previously stored in CoglTexture and this was publicly accessible with the cogl_texture_get_rowstride function. However this doesn't seem to be a useful function because there is no need to use the same rowstride again when uploading or downloading new data. Instead cogl_texture_get_rowstride now just calculates a suitable rowstride from the format and width of the texture.
2009-11-26 17:32:52 +00:00
if ((flags & COGL_TEXTURE_NO_SLICING))
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
tex_2ds->max_waste = -1;
else
tex_2ds->max_waste = COGL_TEXTURE_MAX_WASTE;
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
/* Find closest GL format match */
internal_format = _cogl_pixel_format_to_gl (internal_format,
&gl_intformat,
&gl_format,
&gl_type);
if (!_cogl_texture_2d_sliced_init_base (tex_2ds,
width, height,
gl_intformat,
gl_format,
gl_type,
internal_format))
{
_cogl_texture_2d_sliced_free (tex_2ds);
return COGL_INVALID_HANDLE;
}
if (!_cogl_texture_2d_sliced_slices_create (tex_2ds,
width,
height,
gl_intformat,
gl_format,
gl_type))
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
{
_cogl_texture_2d_sliced_free (tex_2ds);
return COGL_INVALID_HANDLE;
}
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
tex_2ds->auto_mipmap = (flags & COGL_TEXTURE_NO_AUTO_MIPMAP) == 0;
cogl: Move data only used for upload out of CoglTexture The CoglTexture struct previously contained some fields which are only used to upload data such as the CoglBitmap and the source GL format. These are now moved to a separate CoglTextureUploadData struct which only exists for the duration of one of the cogl_texture_*_new functions. In cogl-texture there are utility functions which operate on this new struct rather than on CoglTexture directly. Some of the fields that were previously stored in the CoglBitmap struct are now copied to the CoglTexture such as the width, height, format and internal GL format. The rowstride was previously stored in CoglTexture and this was publicly accessible with the cogl_texture_get_rowstride function. However this doesn't seem to be a useful function because there is no need to use the same rowstride again when uploading or downloading new data. Instead cogl_texture_get_rowstride now just calculates a suitable rowstride from the format and width of the texture.
2009-11-26 17:32:52 +00:00
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
return _cogl_texture_2d_sliced_handle_new (tex_2ds);
}
CoglHandle
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
_cogl_texture_2d_sliced_new_from_bitmap (CoglBitmap *bmp,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
CoglTextureFlags flags,
CoglPixelFormat internal_format)
{
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
CoglTexture2DSliced *tex_2ds;
CoglBitmap *dst_bmp;
GLenum gl_intformat;
GLenum gl_format;
GLenum gl_type;
int width, height;
g_return_val_if_fail (cogl_is_bitmap (bmp), COGL_INVALID_HANDLE);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
width = _cogl_bitmap_get_width (bmp);
height = _cogl_bitmap_get_height (bmp);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Create new texture and fill with loaded data */
tex_2ds = g_new0 (CoglTexture2DSliced, 1);
if (flags & COGL_TEXTURE_NO_SLICING)
tex_2ds->max_waste = -1;
else
tex_2ds->max_waste = COGL_TEXTURE_MAX_WASTE;
/* FIXME: If upload fails we should set some kind of
* error flag but still return texture handle if the
* user decides to destroy another texture and upload
* this one instead (reloading from file is not needed
* in that case). As a rule then, everytime a valid
* CoglHandle is returned, it should also be destroyed
* with cogl_handle_unref at some point! */
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
dst_bmp = _cogl_texture_prepare_for_upload (bmp,
internal_format,
&internal_format,
&gl_intformat,
&gl_format,
&gl_type);
if (dst_bmp == COGL_INVALID_HANDLE)
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
{
_cogl_texture_2d_sliced_free (tex_2ds);
return COGL_INVALID_HANDLE;
}
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
if (!_cogl_texture_2d_sliced_init_base (tex_2ds,
width, height,
gl_intformat,
gl_format,
gl_type,
internal_format))
goto error;
if (!_cogl_texture_2d_sliced_slices_create (tex_2ds,
width, height,
gl_intformat,
gl_format,
gl_type))
goto error;
if (!_cogl_texture_2d_sliced_upload_to_gl (tex_2ds,
dst_bmp,
gl_intformat,
gl_format,
gl_type))
goto error;
cogl_object_unref (dst_bmp);
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
tex_2ds->auto_mipmap = (flags & COGL_TEXTURE_NO_AUTO_MIPMAP) == 0;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
return _cogl_texture_2d_sliced_handle_new (tex_2ds);
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
error:
cogl_object_unref (dst_bmp);
_cogl_texture_2d_sliced_free (tex_2ds);
return COGL_INVALID_HANDLE;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
}
CoglHandle
_cogl_texture_2d_sliced_new_from_foreign (GLuint gl_handle,
GLenum gl_target,
GLuint width,
GLuint height,
GLuint x_pot_waste,
GLuint y_pot_waste,
CoglPixelFormat format)
{
/* NOTE: width, height and internal format are not queriable
cogl-texture: for foreign textures; always trust user geom We now never query the width and height of the given texture object from OpenGL. The problem is that the user may be creating a Cogl texture from a texture_from_pixmap object where glTexImage2D was never called and the texture_from_pixmap spec doesn't clarify that it's reliable to query the width from OpenGL. This should address: http://bugzilla.openedhand.com/show_bug.cgi?id=1502 Thanks to Johan Bilien for reporting
2010-02-16 14:23:11 +00:00
* in GLES, hence such a function prototype.
*/
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
GLenum gl_error = 0;
GLboolean gl_istexture;
GLint gl_compressed = GL_FALSE;
GLint gl_int_format = 0;
GLint gl_width = 0;
GLint gl_height = 0;
GLint gl_gen_mipmap;
CoglTexture2DSliced *tex_2ds;
CoglTexture *tex;
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-10 01:57:32 +00:00
CoglSpan x_span;
CoglSpan y_span;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
if (!_cogl_texture_driver_allows_foreign_gl_target (gl_target))
return COGL_INVALID_HANDLE;
#if HAVE_COGL_GL
/* It shouldn't be necissary to have waste in this case since
* the texture isn't limited to power of two sizes. */
if (gl_target == GL_TEXTURE_RECTANGLE_ARB &&
(x_pot_waste != 0 || y_pot_waste != 0))
{
g_warning ("You can't create a foreign GL_TEXTURE_RECTANGLE cogl "
"texture with waste\n");
return COGL_INVALID_HANDLE;
}
#endif
/* Make sure it is a valid GL texture object */
gl_istexture = glIsTexture (gl_handle);
if (gl_istexture == GL_FALSE)
return COGL_INVALID_HANDLE;
/* Make sure binding succeeds */
cogl: resolves some low hanging issues flagged by clang An initial pass over the Cogl source code using the Clang static analysis tool flagged a few low hanging issues such as un-used variables or redundant initializing of variables which this patch fixes.
2010-02-11 16:12:26 +00:00
while ((gl_error = glGetError ()) != GL_NO_ERROR)
;
material: Avoid redundant glBindTexture calls This adds a _cogl_bind_gl_texture_transient function that should be used instead of glBindTexture so we can have a consistent cache of the textures bound to each texture unit so we can avoid some redundant binding.
2010-04-26 09:01:43 +00:00
_cogl_bind_gl_texture_transient (gl_target, gl_handle, TRUE);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
if (glGetError () != GL_NO_ERROR)
return COGL_INVALID_HANDLE;
/* Obtain texture parameters
(only level 0 we are interested in) */
#if HAVE_COGL_GL
GE( glGetTexLevelParameteriv (gl_target, 0,
GL_TEXTURE_COMPRESSED,
&gl_compressed) );
GE( glGetTexLevelParameteriv (gl_target, 0,
GL_TEXTURE_INTERNAL_FORMAT,
&gl_int_format) );
cogl-texture: for foreign textures; always trust user geom We now never query the width and height of the given texture object from OpenGL. The problem is that the user may be creating a Cogl texture from a texture_from_pixmap object where glTexImage2D was never called and the texture_from_pixmap spec doesn't clarify that it's reliable to query the width from OpenGL. This should address: http://bugzilla.openedhand.com/show_bug.cgi?id=1502 Thanks to Johan Bilien for reporting
2010-02-16 14:23:11 +00:00
#endif
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl-texture: for foreign textures; always trust user geom We now never query the width and height of the given texture object from OpenGL. The problem is that the user may be creating a Cogl texture from a texture_from_pixmap object where glTexImage2D was never called and the texture_from_pixmap spec doesn't clarify that it's reliable to query the width from OpenGL. This should address: http://bugzilla.openedhand.com/show_bug.cgi?id=1502 Thanks to Johan Bilien for reporting
2010-02-16 14:23:11 +00:00
/* Note: We always trust the given width and height without querying
* the texture object because the user may be creating a Cogl
* texture for a texture_from_pixmap object where glTexImage2D may
* not have been called and the texture_from_pixmap spec doesn't
* clarify that it is reliable to query back the size from OpenGL.
*/
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
gl_width = width + x_pot_waste;
gl_height = height + y_pot_waste;
GE( glGetTexParameteriv (gl_target,
GL_GENERATE_MIPMAP,
&gl_gen_mipmap) );
/* Validate width and height */
if (gl_width <= 0 || gl_height <= 0)
return COGL_INVALID_HANDLE;
/* Validate pot waste */
if (x_pot_waste < 0 || x_pot_waste >= gl_width ||
y_pot_waste < 0 || y_pot_waste >= gl_height)
return COGL_INVALID_HANDLE;
/* Compressed texture images not supported */
if (gl_compressed == GL_TRUE)
return COGL_INVALID_HANDLE;
/* Try and match to a cogl format */
if (!_cogl_pixel_format_from_gl_internal (gl_int_format, &format))
return COGL_INVALID_HANDLE;
/* Create new texture */
tex_2ds = g_new0 (CoglTexture2DSliced, 1);
tex = COGL_TEXTURE (tex_2ds);
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
tex->vtable = &cogl_texture_2d_sliced_vtable;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Setup bitmap info */
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
tex_2ds->is_foreign = TRUE;
tex_2ds->auto_mipmap = (gl_gen_mipmap == GL_TRUE) ? TRUE : FALSE;
tex_2ds->mipmaps_dirty = TRUE;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
tex_2ds->first_pixels = NULL;
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
tex_2ds->format = format;
tex_2ds->width = gl_width - x_pot_waste;
tex_2ds->height = gl_height - y_pot_waste;
tex_2ds->gl_target = gl_target;
tex_2ds->gl_format = gl_int_format;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Unknown filter */
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
tex_2ds->min_filter = GL_FALSE;
tex_2ds->mag_filter = GL_FALSE;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
tex_2ds->max_waste = 0;
/* Wrap mode not yet set */
Split the wrap mode of _cogl_texture_set_wrap_mode into three GL supports setting different wrap modes for the s, t and r coordinates so we should design the backend interface to support that also. The r coordinate is not currently used by any of the backends but we might as well have it to make life easier if we ever add support for 3D textures. http://bugzilla.openedhand.com/show_bug.cgi?id=2063
2010-03-25 17:29:22 +00:00
tex_2ds->wrap_mode_s = GL_FALSE;
tex_2ds->wrap_mode_t = GL_FALSE;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Create slice arrays */
tex_2ds->slice_x_spans =
g_array_sized_new (FALSE, FALSE,
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
sizeof (CoglSpan), 1);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
tex_2ds->slice_y_spans =
g_array_sized_new (FALSE, FALSE,
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
sizeof (CoglSpan), 1);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
tex_2ds->slice_gl_handles =
g_array_sized_new (FALSE, FALSE,
sizeof (GLuint), 1);
/* Store info for a single slice */
x_span.start = 0;
x_span.size = gl_width;
x_span.waste = x_pot_waste;
g_array_append_val (tex_2ds->slice_x_spans, x_span);
y_span.start = 0;
y_span.size = gl_height;
y_span.waste = y_pot_waste;
g_array_append_val (tex_2ds->slice_y_spans, y_span);
g_array_append_val (tex_2ds->slice_gl_handles, gl_handle);
tex_2ds->first_pixels = NULL;
return _cogl_texture_2d_sliced_handle_new (tex_2ds);
}
material: Avoid redundant glBindTexture calls This adds a _cogl_bind_gl_texture_transient function that should be used instead of glBindTexture so we can have a consistent cache of the textures bound to each texture unit so we can avoid some redundant binding.
2010-04-26 09:01:43 +00:00
static gboolean
_cogl_texture_2d_sliced_is_foreign (CoglTexture *tex)
{
return COGL_TEXTURE_2D_SLICED (tex)->is_foreign;
}
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-10 01:57:32 +00:00
static int
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
_cogl_texture_2d_sliced_get_max_waste (CoglTexture *tex)
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
{
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
return tex_2ds->max_waste;
}
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
static gboolean
_cogl_texture_2d_sliced_is_sliced (CoglTexture *tex)
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
{
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
if (tex_2ds->slice_gl_handles == NULL)
return FALSE;
if (tex_2ds->slice_gl_handles->len <= 1)
return FALSE;
return TRUE;
}
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
static gboolean
_cogl_texture_2d_sliced_can_hardware_repeat (CoglTexture *tex)
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
{
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
CoglSpan *x_span;
CoglSpan *y_span;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
x_span = &g_array_index (tex_2ds->slice_x_spans, CoglSpan, 0);
y_span = &g_array_index (tex_2ds->slice_y_spans, CoglSpan, 0);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
#if HAVE_COGL_GL
/* TODO: COGL_TEXTURE_TYPE_2D_RECTANGLE */
if (tex_2ds->gl_target == GL_TEXTURE_RECTANGLE_ARB)
return FALSE;
#endif
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
return (x_span->waste || y_span->waste) ? FALSE : TRUE;
}
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
static void
_cogl_texture_2d_sliced_transform_coords_to_gl (CoglTexture *tex,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
float *s,
float *t)
{
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
CoglSpan *x_span;
CoglSpan *y_span;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
g_assert (!_cogl_texture_2d_sliced_is_sliced (tex));
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Don't include the waste in the texture coordinates */
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
x_span = &g_array_index (tex_2ds->slice_x_spans, CoglSpan, 0);
y_span = &g_array_index (tex_2ds->slice_y_spans, CoglSpan, 0);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
*s *= tex_2ds->width / (float)x_span->size;
*t *= tex_2ds->height / (float)y_span->size;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
#if HAVE_COGL_GL
/* Denormalize texture coordinates for rectangle textures */
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
if (tex_2ds->gl_target == GL_TEXTURE_RECTANGLE_ARB)
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
{
*s *= x_span->size;
*t *= y_span->size;
}
#endif
}
Fix checks for out-of-bounds coordinates and repeats Add a return result from CoglTexture.transform_quad_coords_to_gl(), so that we can properly determine the nature of repeats in the face of GL_TEXTURE_RECTANGLE_ARB, where the returned coordinates are not normalized. The comment "We also work out whether any of the texture coordinates are outside the range [0.0,1.0]. We need to do this after calling transform_coords_to_gl in case the texture backend is munging the coordinates (such as in the sub texture backend)." is disregarded and removed, since it's actually the virtual coordinates that determine whether we repeat, not the GL coordinates. Warnings about disregarded layers are used in all cases where applicable, including for subtextures. http://bugzilla.openedhand.com/show_bug.cgi?id=2016 Signed-off-by: Neil Roberts <neil@linux.intel.com>
2010-03-01 21:49:04 +00:00
static CoglTransformResult
cogl: Make CoglSubTexture only work for quad rendering The sub texture backend doesn't work well as a completely general texture backend because for example when rendering with cogl_polygon it needs to be able to tranform arbitrary texture coordinates without reference to the other coordintes. This can't be done when the texture coordinates are a multiple of one because sometimes the coordinate should represent the left or top edge and sometimes it should represent the bottom or top edge. For example if the s coordinates are 0 and 1 then 1 represents the right edge but if they are 1 and 2 then 1 represents the left edge. Instead the sub-textures are now documented not to support coordinates outside the range [0,1]. The coordinates for the sub-region are now represented as integers as this helps avoid rounding issues. The region can no longer be a super-region of the texture as this simplifies the code quite a lot. There are two new texture virtual functions: transform_quad_coords_to_gl - This transforms two pairs of coordinates representing a quad. It will return FALSE if the coordinates can not be transformed. The sub texture backend uses this to detect coordinates that require repeating which causes cogl-primitives to use manual repeating. ensure_non_quad_rendering - This is used in cogl_polygon and cogl_vertex_buffer to inform the texture backend that transform_quad_to_gl is going to be used. The atlas backend migrates the texture out of the atlas when it hits this.
2010-01-18 09:22:04 +00:00
_cogl_texture_2d_sliced_transform_quad_coords_to_gl (CoglTexture *tex,
float *coords)
{
Fix checks for out-of-bounds coordinates and repeats Add a return result from CoglTexture.transform_quad_coords_to_gl(), so that we can properly determine the nature of repeats in the face of GL_TEXTURE_RECTANGLE_ARB, where the returned coordinates are not normalized. The comment "We also work out whether any of the texture coordinates are outside the range [0.0,1.0]. We need to do this after calling transform_coords_to_gl in case the texture backend is munging the coordinates (such as in the sub texture backend)." is disregarded and removed, since it's actually the virtual coordinates that determine whether we repeat, not the GL coordinates. Warnings about disregarded layers are used in all cases where applicable, including for subtextures. http://bugzilla.openedhand.com/show_bug.cgi?id=2016 Signed-off-by: Neil Roberts <neil@linux.intel.com>
2010-03-01 21:49:04 +00:00
gboolean need_repeat = FALSE;
int i;
/* This is a bit lazy - in the case where the quad lies entirely
* within a single slice we could avoid the fallback. But that
* could likely lead to visual inconsistency if the fallback involves
* dropping layers, so this might be the right thing to do anyways.
*/
cogl: Make CoglSubTexture only work for quad rendering The sub texture backend doesn't work well as a completely general texture backend because for example when rendering with cogl_polygon it needs to be able to tranform arbitrary texture coordinates without reference to the other coordintes. This can't be done when the texture coordinates are a multiple of one because sometimes the coordinate should represent the left or top edge and sometimes it should represent the bottom or top edge. For example if the s coordinates are 0 and 1 then 1 represents the right edge but if they are 1 and 2 then 1 represents the left edge. Instead the sub-textures are now documented not to support coordinates outside the range [0,1]. The coordinates for the sub-region are now represented as integers as this helps avoid rounding issues. The region can no longer be a super-region of the texture as this simplifies the code quite a lot. There are two new texture virtual functions: transform_quad_coords_to_gl - This transforms two pairs of coordinates representing a quad. It will return FALSE if the coordinates can not be transformed. The sub texture backend uses this to detect coordinates that require repeating which causes cogl-primitives to use manual repeating. ensure_non_quad_rendering - This is used in cogl_polygon and cogl_vertex_buffer to inform the texture backend that transform_quad_to_gl is going to be used. The atlas backend migrates the texture out of the atlas when it hits this.
2010-01-18 09:22:04 +00:00
if (_cogl_texture_2d_sliced_is_sliced (tex))
Fix checks for out-of-bounds coordinates and repeats Add a return result from CoglTexture.transform_quad_coords_to_gl(), so that we can properly determine the nature of repeats in the face of GL_TEXTURE_RECTANGLE_ARB, where the returned coordinates are not normalized. The comment "We also work out whether any of the texture coordinates are outside the range [0.0,1.0]. We need to do this after calling transform_coords_to_gl in case the texture backend is munging the coordinates (such as in the sub texture backend)." is disregarded and removed, since it's actually the virtual coordinates that determine whether we repeat, not the GL coordinates. Warnings about disregarded layers are used in all cases where applicable, including for subtextures. http://bugzilla.openedhand.com/show_bug.cgi?id=2016 Signed-off-by: Neil Roberts <neil@linux.intel.com>
2010-03-01 21:49:04 +00:00
return COGL_TRANSFORM_SOFTWARE_REPEAT;
for (i = 0; i < 4; i++)
if (coords[i] < 0.0f || coords[i] > 1.0f)
need_repeat = TRUE;
if (need_repeat && !_cogl_texture_2d_sliced_can_hardware_repeat (tex))
return COGL_TRANSFORM_SOFTWARE_REPEAT;
cogl: Make CoglSubTexture only work for quad rendering The sub texture backend doesn't work well as a completely general texture backend because for example when rendering with cogl_polygon it needs to be able to tranform arbitrary texture coordinates without reference to the other coordintes. This can't be done when the texture coordinates are a multiple of one because sometimes the coordinate should represent the left or top edge and sometimes it should represent the bottom or top edge. For example if the s coordinates are 0 and 1 then 1 represents the right edge but if they are 1 and 2 then 1 represents the left edge. Instead the sub-textures are now documented not to support coordinates outside the range [0,1]. The coordinates for the sub-region are now represented as integers as this helps avoid rounding issues. The region can no longer be a super-region of the texture as this simplifies the code quite a lot. There are two new texture virtual functions: transform_quad_coords_to_gl - This transforms two pairs of coordinates representing a quad. It will return FALSE if the coordinates can not be transformed. The sub texture backend uses this to detect coordinates that require repeating which causes cogl-primitives to use manual repeating. ensure_non_quad_rendering - This is used in cogl_polygon and cogl_vertex_buffer to inform the texture backend that transform_quad_to_gl is going to be used. The atlas backend migrates the texture out of the atlas when it hits this.
2010-01-18 09:22:04 +00:00
_cogl_texture_2d_sliced_transform_coords_to_gl (tex, coords + 0, coords + 1);
_cogl_texture_2d_sliced_transform_coords_to_gl (tex, coords + 2, coords + 3);
Fix checks for out-of-bounds coordinates and repeats Add a return result from CoglTexture.transform_quad_coords_to_gl(), so that we can properly determine the nature of repeats in the face of GL_TEXTURE_RECTANGLE_ARB, where the returned coordinates are not normalized. The comment "We also work out whether any of the texture coordinates are outside the range [0.0,1.0]. We need to do this after calling transform_coords_to_gl in case the texture backend is munging the coordinates (such as in the sub texture backend)." is disregarded and removed, since it's actually the virtual coordinates that determine whether we repeat, not the GL coordinates. Warnings about disregarded layers are used in all cases where applicable, including for subtextures. http://bugzilla.openedhand.com/show_bug.cgi?id=2016 Signed-off-by: Neil Roberts <neil@linux.intel.com>
2010-03-01 21:49:04 +00:00
return (need_repeat
? COGL_TRANSFORM_HARDWARE_REPEAT : COGL_TRANSFORM_NO_REPEAT);
cogl: Make CoglSubTexture only work for quad rendering The sub texture backend doesn't work well as a completely general texture backend because for example when rendering with cogl_polygon it needs to be able to tranform arbitrary texture coordinates without reference to the other coordintes. This can't be done when the texture coordinates are a multiple of one because sometimes the coordinate should represent the left or top edge and sometimes it should represent the bottom or top edge. For example if the s coordinates are 0 and 1 then 1 represents the right edge but if they are 1 and 2 then 1 represents the left edge. Instead the sub-textures are now documented not to support coordinates outside the range [0,1]. The coordinates for the sub-region are now represented as integers as this helps avoid rounding issues. The region can no longer be a super-region of the texture as this simplifies the code quite a lot. There are two new texture virtual functions: transform_quad_coords_to_gl - This transforms two pairs of coordinates representing a quad. It will return FALSE if the coordinates can not be transformed. The sub texture backend uses this to detect coordinates that require repeating which causes cogl-primitives to use manual repeating. ensure_non_quad_rendering - This is used in cogl_polygon and cogl_vertex_buffer to inform the texture backend that transform_quad_to_gl is going to be used. The atlas backend migrates the texture out of the atlas when it hits this.
2010-01-18 09:22:04 +00:00
}
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
static gboolean
_cogl_texture_2d_sliced_get_gl_texture (CoglTexture *tex,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
GLuint *out_gl_handle,
GLenum *out_gl_target)
{
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
if (tex_2ds->slice_gl_handles == NULL)
return FALSE;
if (tex_2ds->slice_gl_handles->len < 1)
return FALSE;
if (out_gl_handle != NULL)
*out_gl_handle = g_array_index (tex_2ds->slice_gl_handles, GLuint, 0);
if (out_gl_target != NULL)
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
*out_gl_target = tex_2ds->gl_target;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
return TRUE;
}
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
static void
_cogl_texture_2d_sliced_set_filters (CoglTexture *tex,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
GLenum min_filter,
GLenum mag_filter)
{
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
GLuint gl_handle;
int i;
/* Make sure slices were created */
if (tex_2ds->slice_gl_handles == NULL)
return;
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
if (min_filter == tex_2ds->min_filter
&& mag_filter == tex_2ds->mag_filter)
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
return;
/* Store new values */
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
tex_2ds->min_filter = min_filter;
tex_2ds->mag_filter = mag_filter;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Apply new filters to every slice */
for (i=0; i<tex_2ds->slice_gl_handles->len; ++i)
{
gl_handle = g_array_index (tex_2ds->slice_gl_handles, GLuint, i);
material: Avoid redundant glBindTexture calls This adds a _cogl_bind_gl_texture_transient function that should be used instead of glBindTexture so we can have a consistent cache of the textures bound to each texture unit so we can avoid some redundant binding.
2010-04-26 09:01:43 +00:00
_cogl_bind_gl_texture_transient (tex_2ds->gl_target,
gl_handle,
tex_2ds->is_foreign);
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
GE( glTexParameteri (tex_2ds->gl_target, GL_TEXTURE_MAG_FILTER,
tex_2ds->mag_filter) );
GE( glTexParameteri (tex_2ds->gl_target, GL_TEXTURE_MIN_FILTER,
tex_2ds->min_filter) );
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
}
}
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
static void
cogl-texture: Replace the ensure_mipmaps virtual with pre_paint Instead of the ensure_mipmaps virtual that is only called whenever the texture is about to be rendered with a min filter that needs the mipmap, there is now a pre_paint virtual that is always called when the texture is about to be painted in any way. It has a flags parameter which is used to specify whether the mipmap will be needed. This is useful for CoglTexturePixmapX11 because it needs to do stuff before painting that is unrelated to mipmapping.
2010-06-09 16:39:59 +00:00
_cogl_texture_2d_sliced_pre_paint (CoglTexture *tex,
CoglTexturePrePaintFlags flags)
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
{
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
int i;
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl-texture: Replace the ensure_mipmaps virtual with pre_paint Instead of the ensure_mipmaps virtual that is only called whenever the texture is about to be rendered with a min filter that needs the mipmap, there is now a pre_paint virtual that is always called when the texture is about to be painted in any way. It has a flags parameter which is used to specify whether the mipmap will be needed. This is useful for CoglTexturePixmapX11 because it needs to do stuff before painting that is unrelated to mipmapping.
2010-06-09 16:39:59 +00:00
/* We only care about the mipmap flag */
if ((flags & COGL_TEXTURE_NEEDS_MIPMAP) == 0)
return;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Only update if the mipmaps are dirty */
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
if (!tex_2ds->auto_mipmap || !tex_2ds->mipmaps_dirty)
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
return;
/* Make sure slices were created */
if (tex_2ds->slice_gl_handles == NULL)
return;
/* Regenerate the mipmaps on every slice */
for (i = 0; i < tex_2ds->slice_gl_handles->len; i++)
{
GLuint gl_handle = g_array_index (tex_2ds->slice_gl_handles, GLuint, i);
material: Avoid redundant glBindTexture calls This adds a _cogl_bind_gl_texture_transient function that should be used instead of glBindTexture so we can have a consistent cache of the textures bound to each texture unit so we can avoid some redundant binding.
2010-04-26 09:01:43 +00:00
_cogl_bind_gl_texture_transient (tex_2ds->gl_target,
gl_handle,
tex_2ds->is_foreign);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* glGenerateMipmap is defined in the FBO extension */
if (cogl_features_available (COGL_FEATURE_OFFSCREEN))
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
_cogl_texture_driver_gl_generate_mipmaps (tex_2ds->gl_target);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
else if (tex_2ds->first_pixels)
{
CoglTexturePixel *pixel = tex_2ds->first_pixels + i;
/* Temporarily enable automatic mipmap generation and
re-upload the first pixel to cause a regeneration */
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
GE( glTexParameteri (tex_2ds->gl_target, GL_GENERATE_MIPMAP, GL_TRUE) );
GE( glTexSubImage2D (tex_2ds->gl_target, 0, 0, 0, 1, 1,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
pixel->gl_format, pixel->gl_type,
pixel->data) );
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
GE( glTexParameteri (tex_2ds->gl_target, GL_GENERATE_MIPMAP, GL_FALSE) );
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
}
}
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
tex_2ds->mipmaps_dirty = FALSE;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
}
cogl: Make CoglSubTexture only work for quad rendering The sub texture backend doesn't work well as a completely general texture backend because for example when rendering with cogl_polygon it needs to be able to tranform arbitrary texture coordinates without reference to the other coordintes. This can't be done when the texture coordinates are a multiple of one because sometimes the coordinate should represent the left or top edge and sometimes it should represent the bottom or top edge. For example if the s coordinates are 0 and 1 then 1 represents the right edge but if they are 1 and 2 then 1 represents the left edge. Instead the sub-textures are now documented not to support coordinates outside the range [0,1]. The coordinates for the sub-region are now represented as integers as this helps avoid rounding issues. The region can no longer be a super-region of the texture as this simplifies the code quite a lot. There are two new texture virtual functions: transform_quad_coords_to_gl - This transforms two pairs of coordinates representing a quad. It will return FALSE if the coordinates can not be transformed. The sub texture backend uses this to detect coordinates that require repeating which causes cogl-primitives to use manual repeating. ensure_non_quad_rendering - This is used in cogl_polygon and cogl_vertex_buffer to inform the texture backend that transform_quad_to_gl is going to be used. The atlas backend migrates the texture out of the atlas when it hits this.
2010-01-18 09:22:04 +00:00
static void
_cogl_texture_2d_sliced_ensure_non_quad_rendering (CoglTexture *tex)
{
/* Nothing needs to be done */
}
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
static gboolean
_cogl_texture_2d_sliced_set_region (CoglTexture *tex,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
int src_x,
int src_y,
int dst_x,
int dst_y,
unsigned int dst_width,
unsigned int dst_height,
cogl-texture: Share the common code in the set_region virtual There was a lot of common code that was copied to all of the backends to convert the data to a suitable format and wrap it into a CoglBitmap so that it can be passed to _cogl_texture_driver_upload_subregion_to_gl. This patch moves the common code to cogl-texture.c so that the virtual just takes a CoglBitmap that is already in the right format.
2010-07-08 14:15:22 +00:00
CoglBitmap *bmp)
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
{
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
cogl-texture: Share the common code in the set_region virtual There was a lot of common code that was copied to all of the backends to convert the data to a suitable format and wrap it into a CoglBitmap so that it can be passed to _cogl_texture_driver_upload_subregion_to_gl. This patch moves the common code to cogl-texture.c so that the virtual just takes a CoglBitmap that is already in the right format.
2010-07-08 14:15:22 +00:00
GLenum gl_format;
GLenum gl_type;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
_cogl_pixel_format_to_gl (_cogl_bitmap_get_format (bmp),
cogl-texture: Share the common code in the set_region virtual There was a lot of common code that was copied to all of the backends to convert the data to a suitable format and wrap it into a CoglBitmap so that it can be passed to _cogl_texture_driver_upload_subregion_to_gl. This patch moves the common code to cogl-texture.c so that the virtual just takes a CoglBitmap that is already in the right format.
2010-07-08 14:15:22 +00:00
NULL, /* internal format */
&gl_format,
&gl_type);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Send data to GL */
_cogl_texture_2d_sliced_upload_subregion_to_gl (tex_2ds,
src_x, src_y,
dst_x, dst_y,
dst_width, dst_height,
cogl-texture: Share the common code in the set_region virtual There was a lot of common code that was copied to all of the backends to convert the data to a suitable format and wrap it into a CoglBitmap so that it can be passed to _cogl_texture_driver_upload_subregion_to_gl. This patch moves the common code to cogl-texture.c so that the virtual just takes a CoglBitmap that is already in the right format.
2010-07-08 14:15:22 +00:00
bmp,
gl_format,
gl_type);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
return TRUE;
}
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
static gboolean
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
_cogl_texture_2d_sliced_download_from_gl (
CoglTexture2DSliced *tex_2ds,
CoglBitmap *target_bmp,
GLuint target_gl_format,
GLuint target_gl_type)
{
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
CoglSpan *x_span;
CoglSpan *y_span;
GLuint gl_handle;
int bpp;
int x, y;
CoglBitmap *slice_bmp;
CoglPixelFormat target_format = _cogl_bitmap_get_format (target_bmp);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
bpp = _cogl_get_format_bpp (target_format);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Iterate vertical slices */
for (y = 0; y < tex_2ds->slice_y_spans->len; ++y)
{
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
y_span = &g_array_index (tex_2ds->slice_y_spans, CoglSpan, y);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Iterate horizontal slices */
for (x = 0; x < tex_2ds->slice_x_spans->len; ++x)
{
/*if (x != 0 || y != 1) continue;*/
[cogl-spans] split out cogl-spans code from cogl-texture-2d-sliced When we implement atlas textures we will probably want to use the spans API to handle texture repeating so it doesn't make sense to leave the code in cogl-texture-2d-sliced.c. Since it's a standalone set of data structures and algorithms it also seems reasonable to split out from cogl-texture.
2009-09-23 14:11:55 +00:00
x_span = &g_array_index (tex_2ds->slice_x_spans, CoglSpan, x);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Pick the gl texture object handle */
gl_handle = g_array_index (tex_2ds->slice_gl_handles, GLuint,
y * tex_2ds->slice_x_spans->len + x);
/* If there's any waste we need to copy manually
(no glGetTexSubImage) */
if (y_span->waste != 0 || x_span->waste != 0)
{
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
int rowstride = x_span->size * bpp;
guint8 *data = g_malloc (rowstride * y_span->size);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Setup temp bitmap for slice subregion */
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
slice_bmp = _cogl_bitmap_new_from_data (data,
target_format,
x_span->size,
y_span->size,
rowstride,
(CoglBitmapDestroyNotify)
g_free,
NULL);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Setup gl alignment to 0,0 top-left corner */
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
_cogl_texture_driver_prep_gl_for_pixels_download (rowstride, bpp);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Download slice image data into temp bmp */
material: Avoid redundant glBindTexture calls This adds a _cogl_bind_gl_texture_transient function that should be used instead of glBindTexture so we can have a consistent cache of the textures bound to each texture unit so we can avoid some redundant binding.
2010-04-26 09:01:43 +00:00
_cogl_bind_gl_texture_transient (tex_2ds->gl_target,
gl_handle,
tex_2ds->is_foreign);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
if (!_cogl_texture_driver_gl_get_tex_image (tex_2ds->gl_target,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
target_gl_format,
target_gl_type,
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
data))
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
{
/* Free temp bitmap */
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
cogl_object_unref (slice_bmp);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
return FALSE;
}
/* Copy portion of slice from temp to target bmp */
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
_cogl_bitmap_copy_subregion (slice_bmp,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
target_bmp,
0, 0,
x_span->start,
y_span->start,
x_span->size - x_span->waste,
y_span->size - y_span->waste);
/* Free temp bitmap */
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
cogl_object_unref (slice_bmp);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
}
else
{
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
guint8 *data;
GLvoid *dst;
gboolean ret;
int rowstride = _cogl_bitmap_get_rowstride (target_bmp);
data = _cogl_bitmap_map (target_bmp,
COGL_BUFFER_ACCESS_WRITE,
0);
if (data == NULL)
return FALSE;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
dst = data + x_span->start * bpp + y_span->start * rowstride;
_cogl_texture_driver_prep_gl_for_pixels_download (rowstride, bpp);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Download slice image data */
material: Avoid redundant glBindTexture calls This adds a _cogl_bind_gl_texture_transient function that should be used instead of glBindTexture so we can have a consistent cache of the textures bound to each texture unit so we can avoid some redundant binding.
2010-04-26 09:01:43 +00:00
_cogl_bind_gl_texture_transient (tex_2ds->gl_target,
gl_handle,
tex_2ds->is_foreign);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
ret = _cogl_texture_driver_gl_get_tex_image (tex_2ds->gl_target,
target_gl_format,
target_gl_type,
dst);
_cogl_bitmap_unmap (target_bmp);
if (!ret)
return ret;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
}
}
}
return TRUE;
}
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
static gboolean
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
_cogl_texture_2d_sliced_get_data (CoglTexture *tex,
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
CoglPixelFormat format,
unsigned int rowstride,
guint8 *data)
{
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
CoglTexture2DSliced *tex_2ds = COGL_TEXTURE_2D_SLICED (tex);
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-10 01:57:32 +00:00
int bpp;
cogl-texture: Share the common code in the get_data virtual Previously cogl_texture_get_data would pretty much directly pass on to the get_data texture virtual function. This ended up with a lot of common code that was copied to all of the backends. For example, the method is expected to return the required data size if the data pointer is NULL and to calculate its own rowstride if the rowstride is 0. Also it needs to convert the downloaded data if GL can't support that format directly. This patch moves the common code to cogl-texture.c so the virtual is always called with a format that can be downloaded directly by GL and with a valid rowstride. If the download fails then the virtual can return FALSE in which case cogl-texture will use the draw and read fallback.
2010-07-08 12:54:37 +00:00
GLenum gl_format;
GLenum gl_type;
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
CoglBitmap *target_bmp;
gboolean ret;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
bpp = _cogl_get_format_bpp (format);
cogl-texture: Share the common code in the get_data virtual Previously cogl_texture_get_data would pretty much directly pass on to the get_data texture virtual function. This ended up with a lot of common code that was copied to all of the backends. For example, the method is expected to return the required data size if the data pointer is NULL and to calculate its own rowstride if the rowstride is 0. Also it needs to convert the downloaded data if GL can't support that format directly. This patch moves the common code to cogl-texture.c so the virtual is always called with a format that can be downloaded directly by GL and with a valid rowstride. If the download fails then the virtual can return FALSE in which case cogl-texture will use the draw and read fallback.
2010-07-08 12:54:37 +00:00
_cogl_pixel_format_to_gl (format,
NULL, /* internal format */
&gl_format,
&gl_type);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
target_bmp = _cogl_bitmap_new_from_data (data,
format,
tex_2ds->width,
tex_2ds->height,
rowstride,
NULL, /* destroy_fn */
NULL /* destroy_fn_data */);
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
/* Retrieve data from slices */
cogl-bitmap: Encapsulate the CoglBitmap even internally The CoglBitmap struct is now only defined within cogl-bitmap.c so that all of its members can now only be accessed with accessor functions. To get to the data pointer for the bitmap image you must first call _cogl_bitmap_map and later call _cogl_bitmap_unmap. The map function takes the same arguments as cogl_pixel_array_map so that eventually we can make a bitmap optionally internally divert to a pixel array. There is a _cogl_bitmap_new_from_data function which constructs a new bitmap object and takes ownership of the data pointer. The function gets passed a destroy callback which gets called when the bitmap is freed. This is similar to how gdk_pixbuf_new_from_data works. Alternatively NULL can be passed for the destroy function which means that the caller will manage the life of the pointer (but must guarantee that it stays alive at least until the bitmap is freed). This mechanism is used instead of the old approach of creating a CoglBitmap struct on the stack and manually filling in the members. It could also later be used to create a CoglBitmap that owns a GdkPixbuf ref so that we don't necessarily have to copy the GdkPixbuf data when converting to a bitmap. There is also _cogl_bitmap_new_shared. This creates a bitmap using a reference to another CoglBitmap for the data. This is a bit of a hack but it is needed by the atlas texture backend which wants to divert the set_region virtual to another texture but it needs to override the format of the bitmap to ignore the premult flag.
2010-07-07 17:44:16 +00:00
ret = _cogl_texture_2d_sliced_download_from_gl (tex_2ds,
target_bmp,
gl_format,
gl_type);
cogl_object_unref (target_bmp);
return ret;
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 10:36:11 +00:00
}
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
static CoglPixelFormat
_cogl_texture_2d_sliced_get_format (CoglTexture *tex)
{
return COGL_TEXTURE_2D_SLICED (tex)->format;
}
static GLenum
_cogl_texture_2d_sliced_get_gl_format (CoglTexture *tex)
{
return COGL_TEXTURE_2D_SLICED (tex)->gl_format;
}
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-10 01:57:32 +00:00
static int
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
_cogl_texture_2d_sliced_get_width (CoglTexture *tex)
{
return COGL_TEXTURE_2D_SLICED (tex)->width;
}
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-10 01:57:32 +00:00
static int
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
_cogl_texture_2d_sliced_get_height (CoglTexture *tex)
{
return COGL_TEXTURE_2D_SLICED (tex)->height;
}
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
static const CoglTextureVtable
cogl_texture_2d_sliced_vtable =
{
_cogl_texture_2d_sliced_set_region,
_cogl_texture_2d_sliced_get_data,
_cogl_texture_2d_sliced_foreach_sub_texture_in_region,
_cogl_texture_2d_sliced_get_max_waste,
_cogl_texture_2d_sliced_is_sliced,
_cogl_texture_2d_sliced_can_hardware_repeat,
_cogl_texture_2d_sliced_transform_coords_to_gl,
cogl: Make CoglSubTexture only work for quad rendering The sub texture backend doesn't work well as a completely general texture backend because for example when rendering with cogl_polygon it needs to be able to tranform arbitrary texture coordinates without reference to the other coordintes. This can't be done when the texture coordinates are a multiple of one because sometimes the coordinate should represent the left or top edge and sometimes it should represent the bottom or top edge. For example if the s coordinates are 0 and 1 then 1 represents the right edge but if they are 1 and 2 then 1 represents the left edge. Instead the sub-textures are now documented not to support coordinates outside the range [0,1]. The coordinates for the sub-region are now represented as integers as this helps avoid rounding issues. The region can no longer be a super-region of the texture as this simplifies the code quite a lot. There are two new texture virtual functions: transform_quad_coords_to_gl - This transforms two pairs of coordinates representing a quad. It will return FALSE if the coordinates can not be transformed. The sub texture backend uses this to detect coordinates that require repeating which causes cogl-primitives to use manual repeating. ensure_non_quad_rendering - This is used in cogl_polygon and cogl_vertex_buffer to inform the texture backend that transform_quad_to_gl is going to be used. The atlas backend migrates the texture out of the atlas when it hits this.
2010-01-18 09:22:04 +00:00
_cogl_texture_2d_sliced_transform_quad_coords_to_gl,
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
_cogl_texture_2d_sliced_get_gl_texture,
_cogl_texture_2d_sliced_set_filters,
cogl-texture: Replace the ensure_mipmaps virtual with pre_paint Instead of the ensure_mipmaps virtual that is only called whenever the texture is about to be rendered with a min filter that needs the mipmap, there is now a pre_paint virtual that is always called when the texture is about to be painted in any way. It has a flags parameter which is used to specify whether the mipmap will be needed. This is useful for CoglTexturePixmapX11 because it needs to do stuff before painting that is unrelated to mipmapping.
2010-06-09 16:39:59 +00:00
_cogl_texture_2d_sliced_pre_paint,
cogl: Make CoglSubTexture only work for quad rendering The sub texture backend doesn't work well as a completely general texture backend because for example when rendering with cogl_polygon it needs to be able to tranform arbitrary texture coordinates without reference to the other coordintes. This can't be done when the texture coordinates are a multiple of one because sometimes the coordinate should represent the left or top edge and sometimes it should represent the bottom or top edge. For example if the s coordinates are 0 and 1 then 1 represents the right edge but if they are 1 and 2 then 1 represents the left edge. Instead the sub-textures are now documented not to support coordinates outside the range [0,1]. The coordinates for the sub-region are now represented as integers as this helps avoid rounding issues. The region can no longer be a super-region of the texture as this simplifies the code quite a lot. There are two new texture virtual functions: transform_quad_coords_to_gl - This transforms two pairs of coordinates representing a quad. It will return FALSE if the coordinates can not be transformed. The sub texture backend uses this to detect coordinates that require repeating which causes cogl-primitives to use manual repeating. ensure_non_quad_rendering - This is used in cogl_polygon and cogl_vertex_buffer to inform the texture backend that transform_quad_to_gl is going to be used. The atlas backend migrates the texture out of the atlas when it hits this.
2010-01-18 09:22:04 +00:00
_cogl_texture_2d_sliced_ensure_non_quad_rendering,
Split the wrap mode of _cogl_texture_set_wrap_mode into three GL supports setting different wrap modes for the s, t and r coordinates so we should design the backend interface to support that also. The r coordinate is not currently used by any of the backends but we might as well have it to make life easier if we ever add support for 3D textures. http://bugzilla.openedhand.com/show_bug.cgi?id=2063
2010-03-25 17:29:22 +00:00
_cogl_texture_2d_sliced_set_wrap_mode_parameters,
cogl: Move all of the fields from CoglTexture to CoglTexture2DSliced Most of the fields that were previously in CoglTexture are specific to the implementation of CoglTexture2DSliced so they should be placed there instead. For example, the 'mipmaps_dirty' flag is an implementation detail of the ensure_mipmaps function so it doesn't make sense to force all texture backends to have this function. Other fields such as width, height, gl_format and format may make sense for all textures but I've added them as virtual functions instead. This may make more sense for a sub-texture backend for example where it can calculate these based on the full texture.
2009-11-26 18:58:17 +00:00
_cogl_texture_2d_sliced_get_format,
_cogl_texture_2d_sliced_get_gl_format,
_cogl_texture_2d_sliced_get_width,
material: Avoid redundant glBindTexture calls This adds a _cogl_bind_gl_texture_transient function that should be used instead of glBindTexture so we can have a consistent cache of the textures bound to each texture unit so we can avoid some redundant binding.
2010-04-26 09:01:43 +00:00
_cogl_texture_2d_sliced_get_height,
_cogl_texture_2d_sliced_is_foreign
cogl: Use a vtable for the texture backends instead of a type and switch Instead of storing an enum with the backend type for each texture and then using a switch statement to decide which function to call, we should store pointers to all of the functions in a struct and have each texture point to that struct. This is potentially slightly faster when there are more backends and it makes implementing new backends easier because it's more obvious which functions have to be implemented.
2009-11-25 13:39:45 +00:00
};
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