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mutter/cogl/driver/gles/cogl-texture-driver-gles.c

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Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +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/>.
*
*
Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +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"
cogl: rename CoglMaterial -> CoglPipeline This applies an API naming change that's been deliberated over for a while now which is to rename CoglMaterial to CoglPipeline. For now the new pipeline API is marked as experimental and public headers continue to talk about materials not pipelines. The CoglMaterial API is now maintained in terms of the cogl_pipeline API internally. Currently this API is targeting Cogl 2.0 so we will have time to integrate it properly with other upcoming Cogl 2.0 work. The basic reasons for the rename are: - That the term "material" implies to many people that they are constrained to fragment processing; perhaps as some kind of high-level texture abstraction. - In Clutter they get exposed by ClutterTexture actors which may be re-inforcing this misconception. - When comparing how other frameworks use the term material, a material sometimes describes a multi-pass fragment processing technique which isn't the case in Cogl. - In code, "CoglPipeline" will hopefully be a much more self documenting summary of what these objects represent; a full GPU pipeline configuration including, for example, vertex processing, fragment processing and blending. - When considering the API documentation story, at some point we need a document introducing developers to how the "GPU pipeline" works so it should become intuitive that CoglPipeline maps back to that description of the GPU pipeline. - This is consistent in terminology and concept to OpenGL 4's new pipeline object which is a container for program objects. Note: The cogl-material.[ch] files have been renamed to cogl-material-compat.[ch] because otherwise git doesn't seem to treat the change as a moving the old cogl-material.c->cogl-pipeline.c and so we loose all our git-blame history.
2010-10-27 17:54:57 +00:00
#include "cogl-pipeline.h"
#include "cogl-pipeline-opengl-private.h"
cogl: rename cogl-context.h cogl-context-private.h Since we plan to add public cogl_context_* API we need to rename the current cogl-context.h which contains private member details.
2010-11-04 22:25:52 +00:00
#include "cogl-context-private.h"
Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +00:00
#include "cogl-handle.h"
#include "cogl-primitives.h"
#include <string.h>
#include <stdlib.h>
#include <math.h>
Add a Cogl texture 3D backend This adds a publicly exposed experimental API for a 3D texture backend. There is a feature flag which can be checked for whether 3D textures are supported. Although we require OpenGL 1.2 which has 3D textures in core, GLES only provides them through an extension so the feature can be used to detect that. The textures can be created with one of two new API functions :- cogl_texture_3d_new_with_size and cogl_texture_3d_new_from_data There is also internally a new_from_bitmap function. new_from_data is implemented in terms of this function. The two constructors are effectively the only way to upload data to a 3D texture. It does not work to call glTexImage2D with the GL_TEXTURE_3D target so the virtual for cogl_texture_set_region does nothing. It would be possible to make cogl_texture_get_data do something sensible like returning all of the images as a single long image but this is not currently implemented and instead the virtual just always fails. We may want to add API specific to the 3D texture backend to get and set a sub region of the texture. All of those three functions can throw a GError. This will happen if the GPU does not support 3D textures or it does not support NPOTs and an NPOT size is requested. It will also fail if the FBO extension is not supported and the COGL_TEXTURE_NO_AUTO_MIPMAP flag is not given. This could be avoided by copying the code for the GL_GENERATE_MIPMAP TexParameter fallback, but in the interests of keeping the code simple this is not yet done. This adds a couple of functions to cogl-texture-driver for uploading 3D data and querying the 3D proxy texture. prep_gl_for_pixels_upload_full now also takes sets the GL_UNPACK_IMAGE_HEIGHT parameter so that 3D textures can have padding between the images. Whenever 3D texture is uploading, both the height of the images and the height of all of the data is specified (either explicitly or implicilty from the CoglBitmap) so that the image height can be deduced by dividing by the depth.
2010-07-01 21:04:59 +00:00
#ifndef GL_TEXTURE_3D
#define GL_TEXTURE_3D 0x806F
#endif
#ifndef GL_MAX_3D_TEXTURE_SIZE_OES
#define GL_MAX_3D_TEXTURE_SIZE_OES 0x8073
#endif
Move the cogl texture driver functions to a vtable The texture driver functions are now accessed through a vtable pointed to by a struct in the CoglContext so that eventually it will be possible to compile both the GL and GLES texture drivers into a single binary and then select between them at runtime.
2011-07-07 11:48:24 +00:00
static void
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 (GLenum gl_target,
GLsizei n,
GLuint *textures)
{
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 i;
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
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
GE (ctx, glGenTextures (n, textures));
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
for (i = 0; i < n; 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 (gl_target, textures[i], FALSE);
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
switch (gl_target)
{
Add a Cogl texture 3D backend This adds a publicly exposed experimental API for a 3D texture backend. There is a feature flag which can be checked for whether 3D textures are supported. Although we require OpenGL 1.2 which has 3D textures in core, GLES only provides them through an extension so the feature can be used to detect that. The textures can be created with one of two new API functions :- cogl_texture_3d_new_with_size and cogl_texture_3d_new_from_data There is also internally a new_from_bitmap function. new_from_data is implemented in terms of this function. The two constructors are effectively the only way to upload data to a 3D texture. It does not work to call glTexImage2D with the GL_TEXTURE_3D target so the virtual for cogl_texture_set_region does nothing. It would be possible to make cogl_texture_get_data do something sensible like returning all of the images as a single long image but this is not currently implemented and instead the virtual just always fails. We may want to add API specific to the 3D texture backend to get and set a sub region of the texture. All of those three functions can throw a GError. This will happen if the GPU does not support 3D textures or it does not support NPOTs and an NPOT size is requested. It will also fail if the FBO extension is not supported and the COGL_TEXTURE_NO_AUTO_MIPMAP flag is not given. This could be avoided by copying the code for the GL_GENERATE_MIPMAP TexParameter fallback, but in the interests of keeping the code simple this is not yet done. This adds a couple of functions to cogl-texture-driver for uploading 3D data and querying the 3D proxy texture. prep_gl_for_pixels_upload_full now also takes sets the GL_UNPACK_IMAGE_HEIGHT parameter so that 3D textures can have padding between the images. Whenever 3D texture is uploading, both the height of the images and the height of all of the data is specified (either explicitly or implicilty from the CoglBitmap) so that the image height can be deduced by dividing by the depth.
2010-07-01 21:04:59 +00:00
case GL_TEXTURE_2D:
case GL_TEXTURE_3D:
/* GL_TEXTURE_MAG_FILTER defaults to GL_LINEAR, no need to set it */
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
GE( ctx, glTexParameteri (gl_target,
GL_TEXTURE_MIN_FILTER,
GL_LINEAR) );
Add a Cogl texture 3D backend This adds a publicly exposed experimental API for a 3D texture backend. There is a feature flag which can be checked for whether 3D textures are supported. Although we require OpenGL 1.2 which has 3D textures in core, GLES only provides them through an extension so the feature can be used to detect that. The textures can be created with one of two new API functions :- cogl_texture_3d_new_with_size and cogl_texture_3d_new_from_data There is also internally a new_from_bitmap function. new_from_data is implemented in terms of this function. The two constructors are effectively the only way to upload data to a 3D texture. It does not work to call glTexImage2D with the GL_TEXTURE_3D target so the virtual for cogl_texture_set_region does nothing. It would be possible to make cogl_texture_get_data do something sensible like returning all of the images as a single long image but this is not currently implemented and instead the virtual just always fails. We may want to add API specific to the 3D texture backend to get and set a sub region of the texture. All of those three functions can throw a GError. This will happen if the GPU does not support 3D textures or it does not support NPOTs and an NPOT size is requested. It will also fail if the FBO extension is not supported and the COGL_TEXTURE_NO_AUTO_MIPMAP flag is not given. This could be avoided by copying the code for the GL_GENERATE_MIPMAP TexParameter fallback, but in the interests of keeping the code simple this is not yet done. This adds a couple of functions to cogl-texture-driver for uploading 3D data and querying the 3D proxy texture. prep_gl_for_pixels_upload_full now also takes sets the GL_UNPACK_IMAGE_HEIGHT parameter so that 3D textures can have padding between the images. Whenever 3D texture is uploading, both the height of the images and the height of all of the data is specified (either explicitly or implicilty from the CoglBitmap) so that the image height can be deduced by dividing by the depth.
2010-07-01 21:04:59 +00:00
break;
default:
g_assert_not_reached();
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
}
}
}
Move the cogl texture driver functions to a vtable The texture driver functions are now accessed through a vtable pointed to by a struct in the CoglContext so that eventually it will be possible to compile both the GL and GLES texture drivers into a single binary and then select between them at runtime.
2011-07-07 11:48:24 +00:00
static void
Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +00:00
_cogl_texture_driver_prep_gl_for_pixels_upload (int pixels_rowstride,
int pixels_bpp)
{
_cogl_texture_prep_gl_alignment_for_pixels_upload (pixels_rowstride);
}
Move the cogl texture driver functions to a vtable The texture driver functions are now accessed through a vtable pointed to by a struct in the CoglContext so that eventually it will be possible to compile both the GL and GLES texture drivers into a single binary and then select between them at runtime.
2011-07-07 11:48:24 +00:00
static void
Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +00:00
_cogl_texture_driver_prep_gl_for_pixels_download (int pixels_rowstride,
int pixels_bpp)
{
_cogl_texture_prep_gl_alignment_for_pixels_download (pixels_rowstride);
}
cogl-texture-driver-gles: Don't copy the bitmap if alignment matches When uploading data for GLES we need to deal with cases where the rowstride is too large to be described only by GL_UNPACK_ALIGNMENT because there is no GL_UNPACK_ROW_LENGTH. Previously for the sub-region uploading code it would always copy the bitmap and for the code to upload the whole image it would copy the bitmap unless the rowstride == bpp*width. Neither paths took into account that we don't need to copy if the rowstride is just an alignment of bpp*width. This moves the bitmap copying code to a separate function that is used by both upload methods. It only copies the bitmap if the rowstride is not just an alignment of bpp*width. http://bugzilla.clutter-project.org/show_bug.cgi?id=2491
2010-12-17 16:09:26 +00:00
static CoglBitmap *
prepare_bitmap_alignment_for_upload (CoglBitmap *src_bmp)
{
CoglPixelFormat format = _cogl_bitmap_get_format (src_bmp);
int bpp = _cogl_get_format_bpp (format);
int src_rowstride = _cogl_bitmap_get_rowstride (src_bmp);
int width = _cogl_bitmap_get_width (src_bmp);
int alignment = 1;
if (src_rowstride == 0)
return cogl_object_ref (src_bmp);
/* Work out the alignment of the source rowstride */
alignment = 1 << (_cogl_util_ffs (src_rowstride) - 1);
alignment = MIN (alignment, 8);
/* If the aligned data equals the rowstride then we can upload from
the bitmap directly using GL_UNPACK_ALIGNMENT */
if (((width * bpp + alignment - 1) & ~(alignment - 1)) == src_rowstride)
return cogl_object_ref (src_bmp);
/* Otherwise we need to copy the bitmap to pack the alignment
because GLES has no GL_ROW_LENGTH */
else
return _cogl_bitmap_copy (src_bmp);
}
Move the cogl texture driver functions to a vtable The texture driver functions are now accessed through a vtable pointed to by a struct in the CoglContext so that eventually it will be possible to compile both the GL and GLES texture drivers into a single binary and then select between them at runtime.
2011-07-07 11:48:24 +00:00
static void
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_driver_upload_subregion_to_gl (GLenum gl_target,
GLuint 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
gboolean is_foreign,
Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +00:00
int src_x,
int src_y,
int dst_x,
int dst_y,
int width,
int height,
CoglBitmap *source_bmp,
GLuint 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
GLuint source_gl_type)
Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +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
guint8 *data;
CoglPixelFormat source_format = _cogl_bitmap_get_format (source_bmp);
int bpp = _cogl_get_format_bpp (source_format);
CoglBitmap *slice_bmp;
int rowstride;
Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +00:00
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl-texture-driver-gles: Don't copy the bitmap if alignment matches When uploading data for GLES we need to deal with cases where the rowstride is too large to be described only by GL_UNPACK_ALIGNMENT because there is no GL_UNPACK_ROW_LENGTH. Previously for the sub-region uploading code it would always copy the bitmap and for the code to upload the whole image it would copy the bitmap unless the rowstride == bpp*width. Neither paths took into account that we don't need to copy if the rowstride is just an alignment of bpp*width. This moves the bitmap copying code to a separate function that is used by both upload methods. It only copies the bitmap if the rowstride is not just an alignment of bpp*width. http://bugzilla.clutter-project.org/show_bug.cgi?id=2491
2010-12-17 16:09:26 +00:00
/* If we are copying a sub region of the source bitmap then we need
to copy it because GLES does not support GL_UNPACK_ROW_LENGTH */
if (src_x != 0 || src_y != 0 ||
width != _cogl_bitmap_get_width (source_bmp) ||
height != _cogl_bitmap_get_height (source_bmp))
{
rowstride = bpp * width;
rowstride = (rowstride + 3) & ~3;
slice_bmp =
_cogl_bitmap_new_from_data (g_malloc (height * rowstride),
source_format,
width, height,
rowstride,
(CoglBitmapDestroyNotify) g_free,
NULL);
_cogl_bitmap_copy_subregion (source_bmp,
slice_bmp,
src_x, src_y,
0, 0, /* dst_x/y */
width, height);
}
else
{
slice_bmp = prepare_bitmap_alignment_for_upload (source_bmp);
rowstride = _cogl_bitmap_get_rowstride (slice_bmp);
}
Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +00:00
/* Setup gl alignment to match rowstride and 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_upload (rowstride, bpp);
Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +00:00
Add an internal _cogl_bitmap_new_from_buffer This function creates a CoglBitmap which internally references a CoglBuffer. The map and unmap functions will divert to mapping the buffer. There are also now bind and unbind functions which should be used instead of map and unmap whenever the data doesn't need to be read from the CPU but will instead be passed to GL for packing or unpacking. For bitmaps created from buffers this just binds the bitmap. cogl_texture_new_from_buffer now just uses this function to wrap the buffer in a bitmap rather than trying to bind the buffer immediately. This means that the buffer will be bound only at the point right before the texture data is uploaded. This approach means that using a pixel array will take the fastest upload route if possible, but can still fallback to copying the data by mapping the buffer if some conversion is needed. Previously it would just crash in this case because the texture functions were all passed a NULL pointer. http://bugzilla.clutter-project.org/show_bug.cgi?id=2112
2010-07-15 12:05:55 +00:00
data = _cogl_bitmap_bind (slice_bmp, COGL_BUFFER_ACCESS_READ, 0);
_cogl_bind_gl_texture_transient (gl_target, gl_handle, is_foreign);
Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +00:00
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
GE( ctx, glTexSubImage2D (gl_target, 0,
dst_x, dst_y,
width, height,
source_gl_format,
source_gl_type,
data) );
Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +00:00
Add an internal _cogl_bitmap_new_from_buffer This function creates a CoglBitmap which internally references a CoglBuffer. The map and unmap functions will divert to mapping the buffer. There are also now bind and unbind functions which should be used instead of map and unmap whenever the data doesn't need to be read from the CPU but will instead be passed to GL for packing or unpacking. For bitmaps created from buffers this just binds the bitmap. cogl_texture_new_from_buffer now just uses this function to wrap the buffer in a bitmap rather than trying to bind the buffer immediately. This means that the buffer will be bound only at the point right before the texture data is uploaded. This approach means that using a pixel array will take the fastest upload route if possible, but can still fallback to copying the data by mapping the buffer if some conversion is needed. Previously it would just crash in this case because the texture functions were all passed a NULL pointer. http://bugzilla.clutter-project.org/show_bug.cgi?id=2112
2010-07-15 12:05:55 +00:00
_cogl_bitmap_unbind (slice_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_object_unref (slice_bmp);
Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +00:00
}
Move the cogl texture driver functions to a vtable The texture driver functions are now accessed through a vtable pointed to by a struct in the CoglContext so that eventually it will be possible to compile both the GL and GLES texture drivers into a single binary and then select between them at runtime.
2011-07-07 11:48:24 +00:00
static void
cogl: Add _cogl_texture_driver_upload_to_gl This provides a way to upload the entire data for a texture without having to first call glTexImage and then glTexSubImage. This should be faster especially with indirect rendering where it would needlessy send the data for the texture twice.
2009-11-30 12:15:05 +00:00
_cogl_texture_driver_upload_to_gl (GLenum gl_target,
GLuint 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
gboolean is_foreign,
cogl: Add _cogl_texture_driver_upload_to_gl This provides a way to upload the entire data for a texture without having to first call glTexImage and then glTexSubImage. This should be faster especially with indirect rendering where it would needlessy send the data for the texture twice.
2009-11-30 12:15:05 +00:00
CoglBitmap *source_bmp,
GLint internal_gl_format,
GLuint source_gl_format,
GLuint source_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
int bpp = _cogl_get_format_bpp (_cogl_bitmap_get_format (source_bmp));
cogl-texture-driver-gles: Don't copy the bitmap if alignment matches When uploading data for GLES we need to deal with cases where the rowstride is too large to be described only by GL_UNPACK_ALIGNMENT because there is no GL_UNPACK_ROW_LENGTH. Previously for the sub-region uploading code it would always copy the bitmap and for the code to upload the whole image it would copy the bitmap unless the rowstride == bpp*width. Neither paths took into account that we don't need to copy if the rowstride is just an alignment of bpp*width. This moves the bitmap copying code to a separate function that is used by both upload methods. It only copies the bitmap if the rowstride is not just an alignment of bpp*width. http://bugzilla.clutter-project.org/show_bug.cgi?id=2491
2010-12-17 16:09:26 +00:00
int rowstride;
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_width = _cogl_bitmap_get_width (source_bmp);
int bmp_height = _cogl_bitmap_get_height (source_bmp);
CoglBitmap *bmp;
guint8 *data;
cogl: Add _cogl_texture_driver_upload_to_gl This provides a way to upload the entire data for a texture without having to first call glTexImage and then glTexSubImage. This should be faster especially with indirect rendering where it would needlessy send the data for the texture twice.
2009-11-30 12:15:05 +00:00
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
cogl-texture-driver-gles: Don't copy the bitmap if alignment matches When uploading data for GLES we need to deal with cases where the rowstride is too large to be described only by GL_UNPACK_ALIGNMENT because there is no GL_UNPACK_ROW_LENGTH. Previously for the sub-region uploading code it would always copy the bitmap and for the code to upload the whole image it would copy the bitmap unless the rowstride == bpp*width. Neither paths took into account that we don't need to copy if the rowstride is just an alignment of bpp*width. This moves the bitmap copying code to a separate function that is used by both upload methods. It only copies the bitmap if the rowstride is not just an alignment of bpp*width. http://bugzilla.clutter-project.org/show_bug.cgi?id=2491
2010-12-17 16:09:26 +00:00
bmp = prepare_bitmap_alignment_for_upload (source_bmp);
rowstride = _cogl_bitmap_get_rowstride (bmp);
cogl: Add _cogl_texture_driver_upload_to_gl This provides a way to upload the entire data for a texture without having to first call glTexImage and then glTexSubImage. This should be faster especially with indirect rendering where it would needlessy send the data for the texture twice.
2009-11-30 12:15:05 +00:00
/* Setup gl alignment to match rowstride and 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_upload (rowstride, bpp);
cogl: Add _cogl_texture_driver_upload_to_gl This provides a way to upload the entire data for a texture without having to first call glTexImage and then glTexSubImage. This should be faster especially with indirect rendering where it would needlessy send the data for the texture twice.
2009-11-30 12:15:05 +00:00
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, is_foreign);
cogl: Add _cogl_texture_driver_upload_to_gl This provides a way to upload the entire data for a texture without having to first call glTexImage and then glTexSubImage. This should be faster especially with indirect rendering where it would needlessy send the data for the texture twice.
2009-11-30 12:15:05 +00:00
Add an internal _cogl_bitmap_new_from_buffer This function creates a CoglBitmap which internally references a CoglBuffer. The map and unmap functions will divert to mapping the buffer. There are also now bind and unbind functions which should be used instead of map and unmap whenever the data doesn't need to be read from the CPU but will instead be passed to GL for packing or unpacking. For bitmaps created from buffers this just binds the bitmap. cogl_texture_new_from_buffer now just uses this function to wrap the buffer in a bitmap rather than trying to bind the buffer immediately. This means that the buffer will be bound only at the point right before the texture data is uploaded. This approach means that using a pixel array will take the fastest upload route if possible, but can still fallback to copying the data by mapping the buffer if some conversion is needed. Previously it would just crash in this case because the texture functions were all passed a NULL pointer. http://bugzilla.clutter-project.org/show_bug.cgi?id=2112
2010-07-15 12:05:55 +00:00
data = _cogl_bitmap_bind (bmp, COGL_BUFFER_ACCESS_READ, 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
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
GE( ctx, glTexImage2D (gl_target, 0,
internal_gl_format,
bmp_width, bmp_height,
0,
source_gl_format,
source_gl_type,
data) );
Add an internal _cogl_bitmap_new_from_buffer This function creates a CoglBitmap which internally references a CoglBuffer. The map and unmap functions will divert to mapping the buffer. There are also now bind and unbind functions which should be used instead of map and unmap whenever the data doesn't need to be read from the CPU but will instead be passed to GL for packing or unpacking. For bitmaps created from buffers this just binds the bitmap. cogl_texture_new_from_buffer now just uses this function to wrap the buffer in a bitmap rather than trying to bind the buffer immediately. This means that the buffer will be bound only at the point right before the texture data is uploaded. This approach means that using a pixel array will take the fastest upload route if possible, but can still fallback to copying the data by mapping the buffer if some conversion is needed. Previously it would just crash in this case because the texture functions were all passed a NULL pointer. http://bugzilla.clutter-project.org/show_bug.cgi?id=2112
2010-07-15 12:05:55 +00:00
_cogl_bitmap_unbind (bmp);
cogl: Add _cogl_texture_driver_upload_to_gl This provides a way to upload the entire data for a texture without having to first call glTexImage and then glTexSubImage. This should be faster especially with indirect rendering where it would needlessy send the data for the texture twice.
2009-11-30 12:15:05 +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_object_unref (bmp);
cogl: Add _cogl_texture_driver_upload_to_gl This provides a way to upload the entire data for a texture without having to first call glTexImage and then glTexSubImage. This should be faster especially with indirect rendering where it would needlessy send the data for the texture twice.
2009-11-30 12:15:05 +00:00
}
Move the cogl texture driver functions to a vtable The texture driver functions are now accessed through a vtable pointed to by a struct in the CoglContext so that eventually it will be possible to compile both the GL and GLES texture drivers into a single binary and then select between them at runtime.
2011-07-07 11:48:24 +00:00
static void
Add a Cogl texture 3D backend This adds a publicly exposed experimental API for a 3D texture backend. There is a feature flag which can be checked for whether 3D textures are supported. Although we require OpenGL 1.2 which has 3D textures in core, GLES only provides them through an extension so the feature can be used to detect that. The textures can be created with one of two new API functions :- cogl_texture_3d_new_with_size and cogl_texture_3d_new_from_data There is also internally a new_from_bitmap function. new_from_data is implemented in terms of this function. The two constructors are effectively the only way to upload data to a 3D texture. It does not work to call glTexImage2D with the GL_TEXTURE_3D target so the virtual for cogl_texture_set_region does nothing. It would be possible to make cogl_texture_get_data do something sensible like returning all of the images as a single long image but this is not currently implemented and instead the virtual just always fails. We may want to add API specific to the 3D texture backend to get and set a sub region of the texture. All of those three functions can throw a GError. This will happen if the GPU does not support 3D textures or it does not support NPOTs and an NPOT size is requested. It will also fail if the FBO extension is not supported and the COGL_TEXTURE_NO_AUTO_MIPMAP flag is not given. This could be avoided by copying the code for the GL_GENERATE_MIPMAP TexParameter fallback, but in the interests of keeping the code simple this is not yet done. This adds a couple of functions to cogl-texture-driver for uploading 3D data and querying the 3D proxy texture. prep_gl_for_pixels_upload_full now also takes sets the GL_UNPACK_IMAGE_HEIGHT parameter so that 3D textures can have padding between the images. Whenever 3D texture is uploading, both the height of the images and the height of all of the data is specified (either explicitly or implicilty from the CoglBitmap) so that the image height can be deduced by dividing by the depth.
2010-07-01 21:04:59 +00:00
_cogl_texture_driver_upload_to_gl_3d (GLenum gl_target,
GLuint gl_handle,
gboolean is_foreign,
GLint height,
GLint depth,
CoglBitmap *source_bmp,
GLint internal_gl_format,
GLuint source_gl_format,
GLuint source_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
int bpp = _cogl_get_format_bpp (_cogl_bitmap_get_format (source_bmp));
int rowstride = _cogl_bitmap_get_rowstride (source_bmp);
int bmp_width = _cogl_bitmap_get_width (source_bmp);
int bmp_height = _cogl_bitmap_get_height (source_bmp);
guint8 *data;
Add a Cogl texture 3D backend This adds a publicly exposed experimental API for a 3D texture backend. There is a feature flag which can be checked for whether 3D textures are supported. Although we require OpenGL 1.2 which has 3D textures in core, GLES only provides them through an extension so the feature can be used to detect that. The textures can be created with one of two new API functions :- cogl_texture_3d_new_with_size and cogl_texture_3d_new_from_data There is also internally a new_from_bitmap function. new_from_data is implemented in terms of this function. The two constructors are effectively the only way to upload data to a 3D texture. It does not work to call glTexImage2D with the GL_TEXTURE_3D target so the virtual for cogl_texture_set_region does nothing. It would be possible to make cogl_texture_get_data do something sensible like returning all of the images as a single long image but this is not currently implemented and instead the virtual just always fails. We may want to add API specific to the 3D texture backend to get and set a sub region of the texture. All of those three functions can throw a GError. This will happen if the GPU does not support 3D textures or it does not support NPOTs and an NPOT size is requested. It will also fail if the FBO extension is not supported and the COGL_TEXTURE_NO_AUTO_MIPMAP flag is not given. This could be avoided by copying the code for the GL_GENERATE_MIPMAP TexParameter fallback, but in the interests of keeping the code simple this is not yet done. This adds a couple of functions to cogl-texture-driver for uploading 3D data and querying the 3D proxy texture. prep_gl_for_pixels_upload_full now also takes sets the GL_UNPACK_IMAGE_HEIGHT parameter so that 3D textures can have padding between the images. Whenever 3D texture is uploading, both the height of the images and the height of all of the data is specified (either explicitly or implicilty from the CoglBitmap) so that the image height can be deduced by dividing by the depth.
2010-07-01 21:04:59 +00:00
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
_cogl_bind_gl_texture_transient (gl_target, gl_handle, is_foreign);
/* If the rowstride or image height can't be specified with just
GL_ALIGNMENT alone then we need to copy the bitmap because there
is no GL_ROW_LENGTH */
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 (rowstride / bpp != bmp_width ||
height != bmp_height / depth)
Add a Cogl texture 3D backend This adds a publicly exposed experimental API for a 3D texture backend. There is a feature flag which can be checked for whether 3D textures are supported. Although we require OpenGL 1.2 which has 3D textures in core, GLES only provides them through an extension so the feature can be used to detect that. The textures can be created with one of two new API functions :- cogl_texture_3d_new_with_size and cogl_texture_3d_new_from_data There is also internally a new_from_bitmap function. new_from_data is implemented in terms of this function. The two constructors are effectively the only way to upload data to a 3D texture. It does not work to call glTexImage2D with the GL_TEXTURE_3D target so the virtual for cogl_texture_set_region does nothing. It would be possible to make cogl_texture_get_data do something sensible like returning all of the images as a single long image but this is not currently implemented and instead the virtual just always fails. We may want to add API specific to the 3D texture backend to get and set a sub region of the texture. All of those three functions can throw a GError. This will happen if the GPU does not support 3D textures or it does not support NPOTs and an NPOT size is requested. It will also fail if the FBO extension is not supported and the COGL_TEXTURE_NO_AUTO_MIPMAP flag is not given. This could be avoided by copying the code for the GL_GENERATE_MIPMAP TexParameter fallback, but in the interests of keeping the code simple this is not yet done. This adds a couple of functions to cogl-texture-driver for uploading 3D data and querying the 3D proxy texture. prep_gl_for_pixels_upload_full now also takes sets the GL_UNPACK_IMAGE_HEIGHT parameter so that 3D textures can have padding between the images. Whenever 3D texture is uploading, both the height of the images and the height of all of the data is specified (either explicitly or implicilty from the CoglBitmap) so that the image height can be deduced by dividing by the depth.
2010-07-01 21:04:59 +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
CoglBitmap *bmp;
int image_height = bmp_height / depth;
Add a Cogl texture 3D backend This adds a publicly exposed experimental API for a 3D texture backend. There is a feature flag which can be checked for whether 3D textures are supported. Although we require OpenGL 1.2 which has 3D textures in core, GLES only provides them through an extension so the feature can be used to detect that. The textures can be created with one of two new API functions :- cogl_texture_3d_new_with_size and cogl_texture_3d_new_from_data There is also internally a new_from_bitmap function. new_from_data is implemented in terms of this function. The two constructors are effectively the only way to upload data to a 3D texture. It does not work to call glTexImage2D with the GL_TEXTURE_3D target so the virtual for cogl_texture_set_region does nothing. It would be possible to make cogl_texture_get_data do something sensible like returning all of the images as a single long image but this is not currently implemented and instead the virtual just always fails. We may want to add API specific to the 3D texture backend to get and set a sub region of the texture. All of those three functions can throw a GError. This will happen if the GPU does not support 3D textures or it does not support NPOTs and an NPOT size is requested. It will also fail if the FBO extension is not supported and the COGL_TEXTURE_NO_AUTO_MIPMAP flag is not given. This could be avoided by copying the code for the GL_GENERATE_MIPMAP TexParameter fallback, but in the interests of keeping the code simple this is not yet done. This adds a couple of functions to cogl-texture-driver for uploading 3D data and querying the 3D proxy texture. prep_gl_for_pixels_upload_full now also takes sets the GL_UNPACK_IMAGE_HEIGHT parameter so that 3D textures can have padding between the images. Whenever 3D texture is uploading, both the height of the images and the height of all of the data is specified (either explicitly or implicilty from the CoglBitmap) so that the image height can be deduced by dividing by the depth.
2010-07-01 21:04:59 +00:00
int i;
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 (bmp_width * bpp, bpp);
Add a Cogl texture 3D backend This adds a publicly exposed experimental API for a 3D texture backend. There is a feature flag which can be checked for whether 3D textures are supported. Although we require OpenGL 1.2 which has 3D textures in core, GLES only provides them through an extension so the feature can be used to detect that. The textures can be created with one of two new API functions :- cogl_texture_3d_new_with_size and cogl_texture_3d_new_from_data There is also internally a new_from_bitmap function. new_from_data is implemented in terms of this function. The two constructors are effectively the only way to upload data to a 3D texture. It does not work to call glTexImage2D with the GL_TEXTURE_3D target so the virtual for cogl_texture_set_region does nothing. It would be possible to make cogl_texture_get_data do something sensible like returning all of the images as a single long image but this is not currently implemented and instead the virtual just always fails. We may want to add API specific to the 3D texture backend to get and set a sub region of the texture. All of those three functions can throw a GError. This will happen if the GPU does not support 3D textures or it does not support NPOTs and an NPOT size is requested. It will also fail if the FBO extension is not supported and the COGL_TEXTURE_NO_AUTO_MIPMAP flag is not given. This could be avoided by copying the code for the GL_GENERATE_MIPMAP TexParameter fallback, but in the interests of keeping the code simple this is not yet done. This adds a couple of functions to cogl-texture-driver for uploading 3D data and querying the 3D proxy texture. prep_gl_for_pixels_upload_full now also takes sets the GL_UNPACK_IMAGE_HEIGHT parameter so that 3D textures can have padding between the images. Whenever 3D texture is uploading, both the height of the images and the height of all of the data is specified (either explicitly or implicilty from the CoglBitmap) so that the image height can be deduced by dividing by the depth.
2010-07-01 21:04:59 +00:00
/* Initialize the texture with empty data and then upload each
image with a sub-region update */
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
GE( ctx, glTexImage3D (gl_target,
0, /* level */
internal_gl_format,
bmp_width,
height,
depth,
0,
source_gl_format,
source_gl_type,
NULL) );
Add a Cogl texture 3D backend This adds a publicly exposed experimental API for a 3D texture backend. There is a feature flag which can be checked for whether 3D textures are supported. Although we require OpenGL 1.2 which has 3D textures in core, GLES only provides them through an extension so the feature can be used to detect that. The textures can be created with one of two new API functions :- cogl_texture_3d_new_with_size and cogl_texture_3d_new_from_data There is also internally a new_from_bitmap function. new_from_data is implemented in terms of this function. The two constructors are effectively the only way to upload data to a 3D texture. It does not work to call glTexImage2D with the GL_TEXTURE_3D target so the virtual for cogl_texture_set_region does nothing. It would be possible to make cogl_texture_get_data do something sensible like returning all of the images as a single long image but this is not currently implemented and instead the virtual just always fails. We may want to add API specific to the 3D texture backend to get and set a sub region of the texture. All of those three functions can throw a GError. This will happen if the GPU does not support 3D textures or it does not support NPOTs and an NPOT size is requested. It will also fail if the FBO extension is not supported and the COGL_TEXTURE_NO_AUTO_MIPMAP flag is not given. This could be avoided by copying the code for the GL_GENERATE_MIPMAP TexParameter fallback, but in the interests of keeping the code simple this is not yet done. This adds a couple of functions to cogl-texture-driver for uploading 3D data and querying the 3D proxy texture. prep_gl_for_pixels_upload_full now also takes sets the GL_UNPACK_IMAGE_HEIGHT parameter so that 3D textures can have padding between the images. Whenever 3D texture is uploading, both the height of the images and the height of all of the data is specified (either explicitly or implicilty from the CoglBitmap) so that the image height can be deduced by dividing by the depth.
2010-07-01 21:04:59 +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 = _cogl_bitmap_new_from_data (g_malloc (bpp * bmp_width * height),
_cogl_bitmap_get_format (source_bmp),
bmp_width,
height,
bpp * bmp_width,
(CoglBitmapDestroyNotify) g_free,
NULL);
Add a Cogl texture 3D backend This adds a publicly exposed experimental API for a 3D texture backend. There is a feature flag which can be checked for whether 3D textures are supported. Although we require OpenGL 1.2 which has 3D textures in core, GLES only provides them through an extension so the feature can be used to detect that. The textures can be created with one of two new API functions :- cogl_texture_3d_new_with_size and cogl_texture_3d_new_from_data There is also internally a new_from_bitmap function. new_from_data is implemented in terms of this function. The two constructors are effectively the only way to upload data to a 3D texture. It does not work to call glTexImage2D with the GL_TEXTURE_3D target so the virtual for cogl_texture_set_region does nothing. It would be possible to make cogl_texture_get_data do something sensible like returning all of the images as a single long image but this is not currently implemented and instead the virtual just always fails. We may want to add API specific to the 3D texture backend to get and set a sub region of the texture. All of those three functions can throw a GError. This will happen if the GPU does not support 3D textures or it does not support NPOTs and an NPOT size is requested. It will also fail if the FBO extension is not supported and the COGL_TEXTURE_NO_AUTO_MIPMAP flag is not given. This could be avoided by copying the code for the GL_GENERATE_MIPMAP TexParameter fallback, but in the interests of keeping the code simple this is not yet done. This adds a couple of functions to cogl-texture-driver for uploading 3D data and querying the 3D proxy texture. prep_gl_for_pixels_upload_full now also takes sets the GL_UNPACK_IMAGE_HEIGHT parameter so that 3D textures can have padding between the images. Whenever 3D texture is uploading, both the height of the images and the height of all of the data is specified (either explicitly or implicilty from the CoglBitmap) so that the image height can be deduced by dividing by the depth.
2010-07-01 21:04:59 +00:00
for (i = 0; i < depth; i++)
{
_cogl_bitmap_copy_subregion (source_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
bmp,
Add a Cogl texture 3D backend This adds a publicly exposed experimental API for a 3D texture backend. There is a feature flag which can be checked for whether 3D textures are supported. Although we require OpenGL 1.2 which has 3D textures in core, GLES only provides them through an extension so the feature can be used to detect that. The textures can be created with one of two new API functions :- cogl_texture_3d_new_with_size and cogl_texture_3d_new_from_data There is also internally a new_from_bitmap function. new_from_data is implemented in terms of this function. The two constructors are effectively the only way to upload data to a 3D texture. It does not work to call glTexImage2D with the GL_TEXTURE_3D target so the virtual for cogl_texture_set_region does nothing. It would be possible to make cogl_texture_get_data do something sensible like returning all of the images as a single long image but this is not currently implemented and instead the virtual just always fails. We may want to add API specific to the 3D texture backend to get and set a sub region of the texture. All of those three functions can throw a GError. This will happen if the GPU does not support 3D textures or it does not support NPOTs and an NPOT size is requested. It will also fail if the FBO extension is not supported and the COGL_TEXTURE_NO_AUTO_MIPMAP flag is not given. This could be avoided by copying the code for the GL_GENERATE_MIPMAP TexParameter fallback, but in the interests of keeping the code simple this is not yet done. This adds a couple of functions to cogl-texture-driver for uploading 3D data and querying the 3D proxy texture. prep_gl_for_pixels_upload_full now also takes sets the GL_UNPACK_IMAGE_HEIGHT parameter so that 3D textures can have padding between the images. Whenever 3D texture is uploading, both the height of the images and the height of all of the data is specified (either explicitly or implicilty from the CoglBitmap) so that the image height can be deduced by dividing by the depth.
2010-07-01 21:04:59 +00:00
0, image_height * i,
0, 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
bmp_width,
cogl-texture-driver-gles: Fix image height for uploading 3D textures When uploading a 3D texture with an awkward rowstride, on GLES Cogl will copy the images to an intermediate buffer to pass to GL. However it was using the wrong height when copying the data so it would end up overflowing the buffer and crashing.
2010-11-23 14:07:16 +00:00
height);
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
Add an internal _cogl_bitmap_new_from_buffer This function creates a CoglBitmap which internally references a CoglBuffer. The map and unmap functions will divert to mapping the buffer. There are also now bind and unbind functions which should be used instead of map and unmap whenever the data doesn't need to be read from the CPU but will instead be passed to GL for packing or unpacking. For bitmaps created from buffers this just binds the bitmap. cogl_texture_new_from_buffer now just uses this function to wrap the buffer in a bitmap rather than trying to bind the buffer immediately. This means that the buffer will be bound only at the point right before the texture data is uploaded. This approach means that using a pixel array will take the fastest upload route if possible, but can still fallback to copying the data by mapping the buffer if some conversion is needed. Previously it would just crash in this case because the texture functions were all passed a NULL pointer. http://bugzilla.clutter-project.org/show_bug.cgi?id=2112
2010-07-15 12:05:55 +00:00
data = _cogl_bitmap_bind (bmp,
COGL_BUFFER_ACCESS_READ, 0);
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
GE( ctx, glTexSubImage3D (gl_target,
0, /* level */
0, /* xoffset */
0, /* yoffset */
i, /* zoffset */
bmp_width, /* width */
height, /* height */
1, /* depth */
source_gl_format,
source_gl_type,
data) );
Add an internal _cogl_bitmap_new_from_buffer This function creates a CoglBitmap which internally references a CoglBuffer. The map and unmap functions will divert to mapping the buffer. There are also now bind and unbind functions which should be used instead of map and unmap whenever the data doesn't need to be read from the CPU but will instead be passed to GL for packing or unpacking. For bitmaps created from buffers this just binds the bitmap. cogl_texture_new_from_buffer now just uses this function to wrap the buffer in a bitmap rather than trying to bind the buffer immediately. This means that the buffer will be bound only at the point right before the texture data is uploaded. This approach means that using a pixel array will take the fastest upload route if possible, but can still fallback to copying the data by mapping the buffer if some conversion is needed. Previously it would just crash in this case because the texture functions were all passed a NULL pointer. http://bugzilla.clutter-project.org/show_bug.cgi?id=2112
2010-07-15 12:05:55 +00:00
_cogl_bitmap_unbind (bmp);
Add a Cogl texture 3D backend This adds a publicly exposed experimental API for a 3D texture backend. There is a feature flag which can be checked for whether 3D textures are supported. Although we require OpenGL 1.2 which has 3D textures in core, GLES only provides them through an extension so the feature can be used to detect that. The textures can be created with one of two new API functions :- cogl_texture_3d_new_with_size and cogl_texture_3d_new_from_data There is also internally a new_from_bitmap function. new_from_data is implemented in terms of this function. The two constructors are effectively the only way to upload data to a 3D texture. It does not work to call glTexImage2D with the GL_TEXTURE_3D target so the virtual for cogl_texture_set_region does nothing. It would be possible to make cogl_texture_get_data do something sensible like returning all of the images as a single long image but this is not currently implemented and instead the virtual just always fails. We may want to add API specific to the 3D texture backend to get and set a sub region of the texture. All of those three functions can throw a GError. This will happen if the GPU does not support 3D textures or it does not support NPOTs and an NPOT size is requested. It will also fail if the FBO extension is not supported and the COGL_TEXTURE_NO_AUTO_MIPMAP flag is not given. This could be avoided by copying the code for the GL_GENERATE_MIPMAP TexParameter fallback, but in the interests of keeping the code simple this is not yet done. This adds a couple of functions to cogl-texture-driver for uploading 3D data and querying the 3D proxy texture. prep_gl_for_pixels_upload_full now also takes sets the GL_UNPACK_IMAGE_HEIGHT parameter so that 3D textures can have padding between the images. Whenever 3D texture is uploading, both the height of the images and the height of all of the data is specified (either explicitly or implicilty from the CoglBitmap) so that the image height can be deduced by dividing by the depth.
2010-07-01 21:04:59 +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_object_unref (bmp);
Add a Cogl texture 3D backend This adds a publicly exposed experimental API for a 3D texture backend. There is a feature flag which can be checked for whether 3D textures are supported. Although we require OpenGL 1.2 which has 3D textures in core, GLES only provides them through an extension so the feature can be used to detect that. The textures can be created with one of two new API functions :- cogl_texture_3d_new_with_size and cogl_texture_3d_new_from_data There is also internally a new_from_bitmap function. new_from_data is implemented in terms of this function. The two constructors are effectively the only way to upload data to a 3D texture. It does not work to call glTexImage2D with the GL_TEXTURE_3D target so the virtual for cogl_texture_set_region does nothing. It would be possible to make cogl_texture_get_data do something sensible like returning all of the images as a single long image but this is not currently implemented and instead the virtual just always fails. We may want to add API specific to the 3D texture backend to get and set a sub region of the texture. All of those three functions can throw a GError. This will happen if the GPU does not support 3D textures or it does not support NPOTs and an NPOT size is requested. It will also fail if the FBO extension is not supported and the COGL_TEXTURE_NO_AUTO_MIPMAP flag is not given. This could be avoided by copying the code for the GL_GENERATE_MIPMAP TexParameter fallback, but in the interests of keeping the code simple this is not yet done. This adds a couple of functions to cogl-texture-driver for uploading 3D data and querying the 3D proxy texture. prep_gl_for_pixels_upload_full now also takes sets the GL_UNPACK_IMAGE_HEIGHT parameter so that 3D textures can have padding between the images. Whenever 3D texture is uploading, both the height of the images and the height of all of the data is specified (either explicitly or implicilty from the CoglBitmap) so that the image height can be deduced by dividing by the depth.
2010-07-01 21:04:59 +00:00
}
Add an internal _cogl_bitmap_new_from_buffer This function creates a CoglBitmap which internally references a CoglBuffer. The map and unmap functions will divert to mapping the buffer. There are also now bind and unbind functions which should be used instead of map and unmap whenever the data doesn't need to be read from the CPU but will instead be passed to GL for packing or unpacking. For bitmaps created from buffers this just binds the bitmap. cogl_texture_new_from_buffer now just uses this function to wrap the buffer in a bitmap rather than trying to bind the buffer immediately. This means that the buffer will be bound only at the point right before the texture data is uploaded. This approach means that using a pixel array will take the fastest upload route if possible, but can still fallback to copying the data by mapping the buffer if some conversion is needed. Previously it would just crash in this case because the texture functions were all passed a NULL pointer. http://bugzilla.clutter-project.org/show_bug.cgi?id=2112
2010-07-15 12:05:55 +00:00
else
Add a Cogl texture 3D backend This adds a publicly exposed experimental API for a 3D texture backend. There is a feature flag which can be checked for whether 3D textures are supported. Although we require OpenGL 1.2 which has 3D textures in core, GLES only provides them through an extension so the feature can be used to detect that. The textures can be created with one of two new API functions :- cogl_texture_3d_new_with_size and cogl_texture_3d_new_from_data There is also internally a new_from_bitmap function. new_from_data is implemented in terms of this function. The two constructors are effectively the only way to upload data to a 3D texture. It does not work to call glTexImage2D with the GL_TEXTURE_3D target so the virtual for cogl_texture_set_region does nothing. It would be possible to make cogl_texture_get_data do something sensible like returning all of the images as a single long image but this is not currently implemented and instead the virtual just always fails. We may want to add API specific to the 3D texture backend to get and set a sub region of the texture. All of those three functions can throw a GError. This will happen if the GPU does not support 3D textures or it does not support NPOTs and an NPOT size is requested. It will also fail if the FBO extension is not supported and the COGL_TEXTURE_NO_AUTO_MIPMAP flag is not given. This could be avoided by copying the code for the GL_GENERATE_MIPMAP TexParameter fallback, but in the interests of keeping the code simple this is not yet done. This adds a couple of functions to cogl-texture-driver for uploading 3D data and querying the 3D proxy texture. prep_gl_for_pixels_upload_full now also takes sets the GL_UNPACK_IMAGE_HEIGHT parameter so that 3D textures can have padding between the images. Whenever 3D texture is uploading, both the height of the images and the height of all of the data is specified (either explicitly or implicilty from the CoglBitmap) so that the image height can be deduced by dividing by the depth.
2010-07-01 21:04:59 +00:00
{
Add an internal _cogl_bitmap_new_from_buffer This function creates a CoglBitmap which internally references a CoglBuffer. The map and unmap functions will divert to mapping the buffer. There are also now bind and unbind functions which should be used instead of map and unmap whenever the data doesn't need to be read from the CPU but will instead be passed to GL for packing or unpacking. For bitmaps created from buffers this just binds the bitmap. cogl_texture_new_from_buffer now just uses this function to wrap the buffer in a bitmap rather than trying to bind the buffer immediately. This means that the buffer will be bound only at the point right before the texture data is uploaded. This approach means that using a pixel array will take the fastest upload route if possible, but can still fallback to copying the data by mapping the buffer if some conversion is needed. Previously it would just crash in this case because the texture functions were all passed a NULL pointer. http://bugzilla.clutter-project.org/show_bug.cgi?id=2112
2010-07-15 12:05:55 +00:00
data = _cogl_bitmap_bind (source_bmp, COGL_BUFFER_ACCESS_READ, 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
_cogl_texture_driver_prep_gl_for_pixels_upload (rowstride, bpp);
Add a Cogl texture 3D backend This adds a publicly exposed experimental API for a 3D texture backend. There is a feature flag which can be checked for whether 3D textures are supported. Although we require OpenGL 1.2 which has 3D textures in core, GLES only provides them through an extension so the feature can be used to detect that. The textures can be created with one of two new API functions :- cogl_texture_3d_new_with_size and cogl_texture_3d_new_from_data There is also internally a new_from_bitmap function. new_from_data is implemented in terms of this function. The two constructors are effectively the only way to upload data to a 3D texture. It does not work to call glTexImage2D with the GL_TEXTURE_3D target so the virtual for cogl_texture_set_region does nothing. It would be possible to make cogl_texture_get_data do something sensible like returning all of the images as a single long image but this is not currently implemented and instead the virtual just always fails. We may want to add API specific to the 3D texture backend to get and set a sub region of the texture. All of those three functions can throw a GError. This will happen if the GPU does not support 3D textures or it does not support NPOTs and an NPOT size is requested. It will also fail if the FBO extension is not supported and the COGL_TEXTURE_NO_AUTO_MIPMAP flag is not given. This could be avoided by copying the code for the GL_GENERATE_MIPMAP TexParameter fallback, but in the interests of keeping the code simple this is not yet done. This adds a couple of functions to cogl-texture-driver for uploading 3D data and querying the 3D proxy texture. prep_gl_for_pixels_upload_full now also takes sets the GL_UNPACK_IMAGE_HEIGHT parameter so that 3D textures can have padding between the images. Whenever 3D texture is uploading, both the height of the images and the height of all of the data is specified (either explicitly or implicilty from the CoglBitmap) so that the image height can be deduced by dividing by the depth.
2010-07-01 21:04:59 +00:00
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
GE( ctx, glTexImage3D (gl_target,
0, /* level */
internal_gl_format,
bmp_width,
height,
depth,
0,
source_gl_format,
source_gl_type,
data) );
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
Add an internal _cogl_bitmap_new_from_buffer This function creates a CoglBitmap which internally references a CoglBuffer. The map and unmap functions will divert to mapping the buffer. There are also now bind and unbind functions which should be used instead of map and unmap whenever the data doesn't need to be read from the CPU but will instead be passed to GL for packing or unpacking. For bitmaps created from buffers this just binds the bitmap. cogl_texture_new_from_buffer now just uses this function to wrap the buffer in a bitmap rather than trying to bind the buffer immediately. This means that the buffer will be bound only at the point right before the texture data is uploaded. This approach means that using a pixel array will take the fastest upload route if possible, but can still fallback to copying the data by mapping the buffer if some conversion is needed. Previously it would just crash in this case because the texture functions were all passed a NULL pointer. http://bugzilla.clutter-project.org/show_bug.cgi?id=2112
2010-07-15 12:05:55 +00:00
_cogl_bitmap_unbind (source_bmp);
Add a Cogl texture 3D backend This adds a publicly exposed experimental API for a 3D texture backend. There is a feature flag which can be checked for whether 3D textures are supported. Although we require OpenGL 1.2 which has 3D textures in core, GLES only provides them through an extension so the feature can be used to detect that. The textures can be created with one of two new API functions :- cogl_texture_3d_new_with_size and cogl_texture_3d_new_from_data There is also internally a new_from_bitmap function. new_from_data is implemented in terms of this function. The two constructors are effectively the only way to upload data to a 3D texture. It does not work to call glTexImage2D with the GL_TEXTURE_3D target so the virtual for cogl_texture_set_region does nothing. It would be possible to make cogl_texture_get_data do something sensible like returning all of the images as a single long image but this is not currently implemented and instead the virtual just always fails. We may want to add API specific to the 3D texture backend to get and set a sub region of the texture. All of those three functions can throw a GError. This will happen if the GPU does not support 3D textures or it does not support NPOTs and an NPOT size is requested. It will also fail if the FBO extension is not supported and the COGL_TEXTURE_NO_AUTO_MIPMAP flag is not given. This could be avoided by copying the code for the GL_GENERATE_MIPMAP TexParameter fallback, but in the interests of keeping the code simple this is not yet done. This adds a couple of functions to cogl-texture-driver for uploading 3D data and querying the 3D proxy texture. prep_gl_for_pixels_upload_full now also takes sets the GL_UNPACK_IMAGE_HEIGHT parameter so that 3D textures can have padding between the images. Whenever 3D texture is uploading, both the height of the images and the height of all of the data is specified (either explicitly or implicilty from the CoglBitmap) so that the image height can be deduced by dividing by the depth.
2010-07-01 21:04:59 +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
/* NB: GLES doesn't support glGetTexImage2D, so cogl-texture will instead
* fallback to a generic render + readpixels approach to downloading
* texture data. (See _cogl_texture_draw_and_read() ) */
Move the cogl texture driver functions to a vtable The texture driver functions are now accessed through a vtable pointed to by a struct in the CoglContext so that eventually it will be possible to compile both the GL and GLES texture drivers into a single binary and then select between them at runtime.
2011-07-07 11:48:24 +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_driver_gl_get_tex_image (GLenum gl_target,
GLenum dest_gl_format,
GLenum dest_gl_type,
guint8 *dest)
Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +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 FALSE;
Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +00:00
}
Move the cogl texture driver functions to a vtable The texture driver functions are now accessed through a vtable pointed to by a struct in the CoglContext so that eventually it will be possible to compile both the GL and GLES texture drivers into a single binary and then select between them at runtime.
2011-07-07 11:48:24 +00:00
static gboolean
Add a Cogl texture 3D backend This adds a publicly exposed experimental API for a 3D texture backend. There is a feature flag which can be checked for whether 3D textures are supported. Although we require OpenGL 1.2 which has 3D textures in core, GLES only provides them through an extension so the feature can be used to detect that. The textures can be created with one of two new API functions :- cogl_texture_3d_new_with_size and cogl_texture_3d_new_from_data There is also internally a new_from_bitmap function. new_from_data is implemented in terms of this function. The two constructors are effectively the only way to upload data to a 3D texture. It does not work to call glTexImage2D with the GL_TEXTURE_3D target so the virtual for cogl_texture_set_region does nothing. It would be possible to make cogl_texture_get_data do something sensible like returning all of the images as a single long image but this is not currently implemented and instead the virtual just always fails. We may want to add API specific to the 3D texture backend to get and set a sub region of the texture. All of those three functions can throw a GError. This will happen if the GPU does not support 3D textures or it does not support NPOTs and an NPOT size is requested. It will also fail if the FBO extension is not supported and the COGL_TEXTURE_NO_AUTO_MIPMAP flag is not given. This could be avoided by copying the code for the GL_GENERATE_MIPMAP TexParameter fallback, but in the interests of keeping the code simple this is not yet done. This adds a couple of functions to cogl-texture-driver for uploading 3D data and querying the 3D proxy texture. prep_gl_for_pixels_upload_full now also takes sets the GL_UNPACK_IMAGE_HEIGHT parameter so that 3D textures can have padding between the images. Whenever 3D texture is uploading, both the height of the images and the height of all of the data is specified (either explicitly or implicilty from the CoglBitmap) so that the image height can be deduced by dividing by the depth.
2010-07-01 21:04:59 +00:00
_cogl_texture_driver_size_supported_3d (GLenum gl_target,
GLenum gl_format,
GLenum gl_type,
int width,
int height,
int depth)
{
GLint max_size;
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
_COGL_GET_CONTEXT (ctx, FALSE);
Add a Cogl texture 3D backend This adds a publicly exposed experimental API for a 3D texture backend. There is a feature flag which can be checked for whether 3D textures are supported. Although we require OpenGL 1.2 which has 3D textures in core, GLES only provides them through an extension so the feature can be used to detect that. The textures can be created with one of two new API functions :- cogl_texture_3d_new_with_size and cogl_texture_3d_new_from_data There is also internally a new_from_bitmap function. new_from_data is implemented in terms of this function. The two constructors are effectively the only way to upload data to a 3D texture. It does not work to call glTexImage2D with the GL_TEXTURE_3D target so the virtual for cogl_texture_set_region does nothing. It would be possible to make cogl_texture_get_data do something sensible like returning all of the images as a single long image but this is not currently implemented and instead the virtual just always fails. We may want to add API specific to the 3D texture backend to get and set a sub region of the texture. All of those three functions can throw a GError. This will happen if the GPU does not support 3D textures or it does not support NPOTs and an NPOT size is requested. It will also fail if the FBO extension is not supported and the COGL_TEXTURE_NO_AUTO_MIPMAP flag is not given. This could be avoided by copying the code for the GL_GENERATE_MIPMAP TexParameter fallback, but in the interests of keeping the code simple this is not yet done. This adds a couple of functions to cogl-texture-driver for uploading 3D data and querying the 3D proxy texture. prep_gl_for_pixels_upload_full now also takes sets the GL_UNPACK_IMAGE_HEIGHT parameter so that 3D textures can have padding between the images. Whenever 3D texture is uploading, both the height of the images and the height of all of the data is specified (either explicitly or implicilty from the CoglBitmap) so that the image height can be deduced by dividing by the depth.
2010-07-01 21:04:59 +00:00
/* GLES doesn't support a proxy texture target so let's at least
check whether the size is greater than
GL_MAX_3D_TEXTURE_SIZE_OES */
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
GE( ctx, glGetIntegerv (GL_MAX_3D_TEXTURE_SIZE_OES, &max_size) );
Add a Cogl texture 3D backend This adds a publicly exposed experimental API for a 3D texture backend. There is a feature flag which can be checked for whether 3D textures are supported. Although we require OpenGL 1.2 which has 3D textures in core, GLES only provides them through an extension so the feature can be used to detect that. The textures can be created with one of two new API functions :- cogl_texture_3d_new_with_size and cogl_texture_3d_new_from_data There is also internally a new_from_bitmap function. new_from_data is implemented in terms of this function. The two constructors are effectively the only way to upload data to a 3D texture. It does not work to call glTexImage2D with the GL_TEXTURE_3D target so the virtual for cogl_texture_set_region does nothing. It would be possible to make cogl_texture_get_data do something sensible like returning all of the images as a single long image but this is not currently implemented and instead the virtual just always fails. We may want to add API specific to the 3D texture backend to get and set a sub region of the texture. All of those three functions can throw a GError. This will happen if the GPU does not support 3D textures or it does not support NPOTs and an NPOT size is requested. It will also fail if the FBO extension is not supported and the COGL_TEXTURE_NO_AUTO_MIPMAP flag is not given. This could be avoided by copying the code for the GL_GENERATE_MIPMAP TexParameter fallback, but in the interests of keeping the code simple this is not yet done. This adds a couple of functions to cogl-texture-driver for uploading 3D data and querying the 3D proxy texture. prep_gl_for_pixels_upload_full now also takes sets the GL_UNPACK_IMAGE_HEIGHT parameter so that 3D textures can have padding between the images. Whenever 3D texture is uploading, both the height of the images and the height of all of the data is specified (either explicitly or implicilty from the CoglBitmap) so that the image height can be deduced by dividing by the depth.
2010-07-01 21:04:59 +00:00
return width <= max_size && height <= max_size && depth <= max_size;
}
Move the cogl texture driver functions to a vtable The texture driver functions are now accessed through a vtable pointed to by a struct in the CoglContext so that eventually it will be possible to compile both the GL and GLES texture drivers into a single binary and then select between them at runtime.
2011-07-07 11:48:24 +00:00
static gboolean
Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +00:00
_cogl_texture_driver_size_supported (GLenum gl_target,
GLenum gl_format,
GLenum gl_type,
int width,
int height)
{
Use GL_MAX_TEXTURE_SIZE on GLES when checking supported tex size Under big GL, _cogl_texture_driver_size_supported uses the proxy texture to check whether the given texture size is supported. Proxy textures aren't available under GLES so previously this would just return TRUE to assume all texture sizes are supported. This patch makes it use glGetIntegerv with GL_MAX_TEXTURE_SIZE to give a second best guess. This fixes the sliced texture backend so that it will use slices when the texture is too big.
2010-07-08 17:37:01 +00:00
GLint max_size;
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
_COGL_GET_CONTEXT (ctx, FALSE);
Use GL_MAX_TEXTURE_SIZE on GLES when checking supported tex size Under big GL, _cogl_texture_driver_size_supported uses the proxy texture to check whether the given texture size is supported. Proxy textures aren't available under GLES so previously this would just return TRUE to assume all texture sizes are supported. This patch makes it use glGetIntegerv with GL_MAX_TEXTURE_SIZE to give a second best guess. This fixes the sliced texture backend so that it will use slices when the texture is too big.
2010-07-08 17:37:01 +00:00
/* GLES doesn't support a proxy texture target so let's at least
check whether the size is greater than GL_MAX_TEXTURE_SIZE */
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
GE( ctx, glGetIntegerv (GL_MAX_TEXTURE_SIZE, &max_size) );
Use GL_MAX_TEXTURE_SIZE on GLES when checking supported tex size Under big GL, _cogl_texture_driver_size_supported uses the proxy texture to check whether the given texture size is supported. Proxy textures aren't available under GLES so previously this would just return TRUE to assume all texture sizes are supported. This patch makes it use glGetIntegerv with GL_MAX_TEXTURE_SIZE to give a second best guess. This fixes the sliced texture backend so that it will use slices when the texture is too big.
2010-07-08 17:37:01 +00:00
return width <= max_size && height <= max_size;
Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +00:00
}
Move the cogl texture driver functions to a vtable The texture driver functions are now accessed through a vtable pointed to by a struct in the CoglContext so that eventually it will be possible to compile both the GL and GLES texture drivers into a single binary and then select between them at runtime.
2011-07-07 11:48:24 +00:00
static void
Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +00:00
_cogl_texture_driver_try_setting_gl_border_color (
GLuint gl_target,
const GLfloat *transparent_color)
{
/* FAIL! */
}
Move the cogl texture driver functions to a vtable The texture driver functions are now accessed through a vtable pointed to by a struct in the CoglContext so that eventually it will be possible to compile both the GL and GLES texture drivers into a single binary and then select between them at runtime.
2011-07-07 11:48:24 +00:00
static gboolean
_cogl_texture_driver_pixel_format_from_gl_internal (GLenum gl_int_format,
CoglPixelFormat *out_format)
Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +00:00
{
return TRUE;
}
Move the cogl texture driver functions to a vtable The texture driver functions are now accessed through a vtable pointed to by a struct in the CoglContext so that eventually it will be possible to compile both the GL and GLES texture drivers into a single binary and then select between them at runtime.
2011-07-07 11:48:24 +00:00
static CoglPixelFormat
_cogl_texture_driver_pixel_format_to_gl (CoglPixelFormat format,
GLenum *out_glintformat,
GLenum *out_glformat,
GLenum *out_gltype)
Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +00:00
{
CoglPixelFormat required_format;
GLenum glintformat = 0;
GLenum glformat = 0;
GLenum gltype = 0;
/* FIXME: check YUV support */
required_format = format;
/* Find GL equivalents */
switch (format & COGL_UNPREMULT_MASK)
{
case COGL_PIXEL_FORMAT_A_8:
glintformat = GL_ALPHA;
glformat = GL_ALPHA;
gltype = GL_UNSIGNED_BYTE;
break;
case COGL_PIXEL_FORMAT_G_8:
glintformat = GL_LUMINANCE;
glformat = GL_LUMINANCE;
gltype = GL_UNSIGNED_BYTE;
break;
/* Just one 24-bit ordering supported */
case COGL_PIXEL_FORMAT_RGB_888:
case COGL_PIXEL_FORMAT_BGR_888:
glintformat = GL_RGB;
glformat = GL_RGB;
gltype = GL_UNSIGNED_BYTE;
required_format = COGL_PIXEL_FORMAT_RGB_888;
break;
/* Just one 32-bit ordering supported */
case COGL_PIXEL_FORMAT_RGBA_8888:
case COGL_PIXEL_FORMAT_BGRA_8888:
case COGL_PIXEL_FORMAT_ARGB_8888:
case COGL_PIXEL_FORMAT_ABGR_8888:
glintformat = GL_RGBA;
glformat = GL_RGBA;
gltype = GL_UNSIGNED_BYTE;
required_format = COGL_PIXEL_FORMAT_RGBA_8888;
required_format |= (format & COGL_PREMULT_BIT);
break;
/* The following three types of channel ordering
* are always defined using system word byte
* ordering (even according to GLES spec) */
case COGL_PIXEL_FORMAT_RGB_565:
glintformat = GL_RGB;
glformat = GL_RGB;
gltype = GL_UNSIGNED_SHORT_5_6_5;
break;
case COGL_PIXEL_FORMAT_RGBA_4444:
glintformat = GL_RGBA;
glformat = GL_RGBA;
gltype = GL_UNSIGNED_SHORT_4_4_4_4;
break;
case COGL_PIXEL_FORMAT_RGBA_5551:
glintformat = GL_RGBA;
glformat = GL_RGBA;
gltype = GL_UNSIGNED_SHORT_5_5_5_1;
break;
/* FIXME: check extensions for YUV support */
default:
break;
}
if (out_glintformat != NULL)
*out_glintformat = glintformat;
if (out_glformat != NULL)
*out_glformat = glformat;
if (out_gltype != NULL)
*out_gltype = gltype;
return required_format;
}
Move the cogl texture driver functions to a vtable The texture driver functions are now accessed through a vtable pointed to by a struct in the CoglContext so that eventually it will be possible to compile both the GL and GLES texture drivers into a single binary and then select between them at runtime.
2011-07-07 11:48:24 +00:00
static gboolean
Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +00:00
_cogl_texture_driver_allows_foreign_gl_target (GLenum gl_target)
{
/* Allow 2-dimensional textures only */
if (gl_target != GL_TEXTURE_2D)
return FALSE;
return TRUE;
}
Move the cogl texture driver functions to a vtable The texture driver functions are now accessed through a vtable pointed to by a struct in the CoglContext so that eventually it will be possible to compile both the GL and GLES texture drivers into a single binary and then select between them at runtime.
2011-07-07 11:48:24 +00:00
static void
Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +00:00
_cogl_texture_driver_gl_generate_mipmaps (GLenum gl_target)
{
Use all core GL functions through indirect pointers cogl-ext-functions.h now contains definitions for all of the core GL and GLES functions that we would normally link to directly. All of the code has changed to access them through the cogl context pointer. The GE macro now takes an extra parameter to specify the context because the macro itself needs to make GL calls but various points in the Cogl source use different names for the context variable.
2011-07-06 20:51:00 +00:00
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
Dynamically load the GL or GLES library The GL or GLES library is now dynamically loaded by the CoglRenderer so that it can choose between GL, GLES1 and GLES2 at runtime. The library is loaded by the renderer because it needs to be done before calling eglInitialize. There is a new environment variable called COGL_DRIVER to choose between gl, gles1 or gles2. The #ifdefs for HAVE_COGL_GL, HAVE_COGL_GLES and HAVE_COGL_GLES2 have been changed so that they don't assume the ifdefs are mutually exclusive. They haven't been removed entirely so that it's possible to compile the GLES backends without the the enums from the GL headers. When using GLX the winsys additionally dynamically loads libGL because that also contains the GLX API. It can't be linked in directly because that would probably conflict with the GLES API if the EGL is selected. When compiling with EGL support the library links directly to libEGL because it doesn't contain any GL API so it shouldn't have any conflicts. When building for WGL or OSX Cogl still directly links against the GL API so there is a #define in config.h so that Cogl won't try to dlopen the library. Cogl-pango previously had a #ifdef to detect when the GL backend is used so that it can sneakily pass GL_QUADS to cogl_vertex_buffer_draw. This is now changed so that it queries the CoglContext for the backend. However to get this to work Cogl now needs to export the _cogl_context_get_default symbol and cogl-pango needs some extra -I flags to so that it can include cogl-context-private.h
2011-07-07 19:44:56 +00:00
if (ctx->driver == COGL_DRIVER_GLES2)
GE( ctx, glGenerateMipmap (gl_target) );
Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +00:00
}
Move the cogl texture driver functions to a vtable The texture driver functions are now accessed through a vtable pointed to by a struct in the CoglContext so that eventually it will be possible to compile both the GL and GLES texture drivers into a single binary and then select between them at runtime.
2011-07-07 11:48:24 +00:00
static CoglPixelFormat
Improve cogl-texture maintainability by moving 90% into cogl/common This splits the limited components that differed between cogl/{gl,gles}/cogl-texture.c into new {gl,gles}/cogl-texture-driver.c files and the rest that can now be shared into cogl/common/cogl-texture.c
2009-07-27 23:37:11 +00:00
_cogl_texture_driver_find_best_gl_get_data_format (
CoglPixelFormat format,
GLenum *closest_gl_format,
GLenum *closest_gl_type)
{
/* Find closest format that's supported by GL
(Can't use _cogl_pixel_format_to_gl since available formats
when reading pixels on GLES are severely limited) */
*closest_gl_format = GL_RGBA;
*closest_gl_type = GL_UNSIGNED_BYTE;
return COGL_PIXEL_FORMAT_RGBA_8888;
}
Move the cogl texture driver functions to a vtable The texture driver functions are now accessed through a vtable pointed to by a struct in the CoglContext so that eventually it will be possible to compile both the GL and GLES texture drivers into a single binary and then select between them at runtime.
2011-07-07 11:48:24 +00:00
const CoglTextureDriver
_cogl_texture_driver_gles =
{
_cogl_texture_driver_gen,
_cogl_texture_driver_prep_gl_for_pixels_upload,
_cogl_texture_driver_upload_subregion_to_gl,
_cogl_texture_driver_upload_to_gl,
_cogl_texture_driver_upload_to_gl_3d,
_cogl_texture_driver_prep_gl_for_pixels_download,
_cogl_texture_driver_gl_get_tex_image,
_cogl_texture_driver_size_supported,
_cogl_texture_driver_size_supported_3d,
_cogl_texture_driver_try_setting_gl_border_color,
_cogl_texture_driver_pixel_format_from_gl_internal,
_cogl_texture_driver_pixel_format_to_gl,
_cogl_texture_driver_allows_foreign_gl_target,
_cogl_texture_driver_gl_generate_mipmaps,
_cogl_texture_driver_find_best_gl_get_data_format
};
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