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Make CoglTexture2D public as experimental API

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This exposes a CoglTexture2D typedef and adds the following experimental
API:
    cogl_is_texture_2d
    cogl_texture_2d_new_with_size
    cogl_texture_2d_new_from_data
    cogl_texture_2d_new_from_foreign

Since this is experimental API you need to define
COGL_ENABLE_EXPERIMENTAL_API before including cogl.h.

Note: With these new entrypoints we now expect a CoglContext pointer to
be passed in, instead of assuming there is a default context. The aim is
that for Cogl 2.0 we won't have a default context so this is a step in
that direction.
This commit is contained in:
Robert Bragg 2011-05-17 00:05:54 +01:00
parent 80e7e0ef49
commit ee7cc9e788
12 changed files with 348 additions and 56 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
cogl/Makefile.am
View File

@ -75,6 +75,7 @@ cogl_public_h = \
$(srcdir)/cogl-shader.h \
$(srcdir)/cogl-texture.h \
$(srcdir)/cogl-texture-3d.h \
$(srcdir)/cogl-texture-2d.h \
$(srcdir)/cogl-types.h \
$(srcdir)/cogl-vertex-buffer.h \
$(srcdir)/cogl-index-buffer.h \

12
cogl/cogl-atlas.c
View File

@ -285,12 +285,18 @@ _cogl_atlas_create_texture (CoglAtlas *atlas,
NULL);
tex = _cogl_texture_2d_new_from_bitmap (clear_bmp, COGL_TEXTURE_NONE,
atlas->texture_format);
atlas->texture_format,
NULL);
cogl_object_unref (clear_bmp);
}
else
tex = _cogl_texture_2d_new_with_size (width, height, COGL_TEXTURE_NONE,
atlas->texture_format);
{
_COGL_GET_CONTEXT (ctx, COGL_INVALID_HANDLE);
tex = cogl_texture_2d_new_with_size (ctx,
width, height,
atlas->texture_format,
NULL);
}
return tex;
}

2
cogl/cogl-blit.c
View File

@ -199,7 +199,7 @@ _cogl_blit_copy_tex_sub_image_begin (CoglBlitData *data)
_COGL_GET_CONTEXT (ctx, FALSE);
/* This will only work if the target texture is a CoglTexture2D */
if (!_cogl_is_texture_2d (data->dst_tex))
if (!cogl_is_texture_2d (data->dst_tex))
return FALSE;
fbo = _cogl_offscreen_new_to_texture_full

22
cogl/cogl-texture-2d-private.h
View File

@ -28,10 +28,6 @@
#include "cogl-pipeline-private.h"
#include "cogl-texture-private.h"
#define COGL_TEXTURE_2D(tex) ((CoglTexture2D *) tex)
typedef struct _CoglTexture2D CoglTexture2D;
struct _CoglTexture2D
{
CoglTexture _parent;
@ -59,25 +55,11 @@ struct _CoglTexture2D
GQuark
_cogl_handle_texture_2d_get_type (void);
gboolean
_cogl_is_texture_2d (CoglHandle object);
CoglHandle
_cogl_texture_2d_new_with_size (unsigned int width,
unsigned int height,
CoglTextureFlags flags,
CoglPixelFormat internal_format);
CoglHandle
_cogl_texture_2d_new_from_bitmap (CoglBitmap *bmp,
CoglTextureFlags flags,
CoglPixelFormat internal_format);
CoglHandle
_cogl_texture_2d_new_from_foreign (GLuint gl_handle,
GLuint width,
GLuint height,
CoglPixelFormat format);
CoglPixelFormat internal_format,
GError **error);
/*
* _cogl_texture_2d_externally_modified:

8
cogl/cogl-texture-2d-sliced.c
View File

@ -1041,6 +1041,8 @@ _cogl_texture_2d_sliced_new_from_foreign (GLuint gl_handle,
CoglSpan y_span;
CoglHandle tex_2d;
_COGL_GET_CONTEXT (ctx, COGL_INVALID_HANDLE);
/* This should only be called when the texture target is 2D. If a
rectangle texture is used then _cogl_texture_new_from_foreign
will create a cogl_texture_rectangle instead */
@ -1054,10 +1056,12 @@ _cogl_texture_2d_sliced_new_from_foreign (GLuint gl_handle,
y_pot_waste < 0 || y_pot_waste >= height)
return COGL_INVALID_HANDLE;
tex_2d = _cogl_texture_2d_new_from_foreign (gl_target,
tex_2d = cogl_texture_2d_new_from_foreign (ctx,
gl_target,
gl_width,
gl_height,
format);
format,
NULL);
if (!tex_2d)
return COGL_INVALID_HANDLE;

96
cogl/cogl-texture-2d.c
View File

@ -45,7 +45,7 @@
static void _cogl_texture_2d_free (CoglTexture2D *tex_2d);
COGL_TEXTURE_INTERNAL_DEFINE (Texture2D, texture_2d);
COGL_TEXTURE_DEFINE (Texture2D, texture_2d);
static const CoglTextureVtable cogl_texture_2d_vtable;
@ -220,11 +220,12 @@ _cogl_texture_2d_create_base (unsigned int width,
return tex_2d;
}
CoglHandle
_cogl_texture_2d_new_with_size (unsigned int width,
unsigned int height,
CoglTextureFlags flags,
CoglPixelFormat internal_format)
CoglTexture2D *
cogl_texture_2d_new_with_size (CoglContext *ctx,
int width,
int height,
CoglPixelFormat internal_format,
GError **error)
{
CoglTexture2D *tex_2d;
GLenum gl_intformat;
@ -236,14 +237,21 @@ _cogl_texture_2d_new_with_size (unsigned int width,
internal_format = COGL_PIXEL_FORMAT_RGBA_8888_PRE;
if (!_cogl_texture_2d_can_create (width, height, internal_format))
return COGL_INVALID_HANDLE;
{
g_set_error (error, COGL_TEXTURE_ERROR,
COGL_TEXTURE_ERROR_SIZE,
"Failed to create texture 2d due to size/format"
" constraints");
return NULL;
}
internal_format = _cogl_pixel_format_to_gl (internal_format,
&gl_intformat,
&gl_format,
&gl_type);
tex_2d = _cogl_texture_2d_create_base (width, height, flags, internal_format);
tex_2d = _cogl_texture_2d_create_base (width, height, COGL_TEXTURE_NONE,
internal_format);
_cogl_texture_driver_gen (GL_TEXTURE_2D, 1, &tex_2d->gl_texture);
_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
@ -258,7 +266,8 @@ _cogl_texture_2d_new_with_size (unsigned int width,
CoglHandle
_cogl_texture_2d_new_from_bitmap (CoglBitmap *bmp,
CoglTextureFlags flags,
CoglPixelFormat internal_format)
CoglPixelFormat internal_format,
GError **error)
{
CoglTexture2D *tex_2d;
CoglBitmap *dst_bmp;
@ -276,7 +285,14 @@ _cogl_texture_2d_new_from_bitmap (CoglBitmap *bmp,
if (!_cogl_texture_2d_can_create (_cogl_bitmap_get_width (bmp),
_cogl_bitmap_get_height (bmp),
internal_format))
return COGL_INVALID_HANDLE;
{
g_set_error (error, COGL_TEXTURE_ERROR,
COGL_TEXTURE_ERROR_SIZE,
"Failed to create texture 2d due to size/format"
" constraints");
return NULL;
}
if ((dst_bmp = _cogl_texture_prepare_for_upload (bmp,
internal_format,
@ -284,7 +300,12 @@ _cogl_texture_2d_new_from_bitmap (CoglBitmap *bmp,
&gl_intformat,
&gl_format,
&gl_type)) == NULL)
return COGL_INVALID_HANDLE;
{
g_set_error (error, COGL_TEXTURE_ERROR,
COGL_TEXTURE_ERROR_FORMAT,
"Failed to prepare texture upload due to format");
return NULL;
}
tex_2d = _cogl_texture_2d_create_base (_cogl_bitmap_get_width (bmp),
_cogl_bitmap_get_height (bmp),
@ -321,11 +342,50 @@ _cogl_texture_2d_new_from_bitmap (CoglBitmap *bmp,
return _cogl_texture_2d_handle_new (tex_2d);
}
CoglHandle
_cogl_texture_2d_new_from_foreign (GLuint gl_handle,
GLuint width,
GLuint height,
CoglPixelFormat format)
CoglTexture2D *
cogl_texture_2d_new_from_data (CoglContext *ctx,
int width,
int height,
CoglPixelFormat format,
CoglPixelFormat internal_format,
int rowstride,
const guint8 *data,
GError **error)
{
CoglBitmap *bmp;
CoglHandle tex;
g_return_val_if_fail (format != COGL_PIXEL_FORMAT_ANY, NULL);
g_return_val_if_fail (data != NULL, NULL);
/* Rowstride from width if not given */
if (rowstride == 0)
rowstride = width * _cogl_get_format_bpp (format);
/* Wrap the data into a bitmap */
bmp = _cogl_bitmap_new_from_data ((guint8 *)data,
format,
width,
height,
rowstride,
NULL, NULL);
tex =_cogl_texture_2d_new_from_bitmap (bmp, COGL_TEXTURE_NONE,
internal_format,
error);
cogl_object_unref (bmp);
return tex;
}
CoglTexture2D *
cogl_texture_2d_new_from_foreign (CoglContext *ctx,
GLuint gl_handle,
int width,
int height,
CoglPixelFormat format,
GError **error)
{
/* NOTE: width, height and internal format are not queriable
* in GLES, hence such a function prototype.
@ -436,7 +496,7 @@ _cogl_texture_2d_new_from_foreign (GLuint gl_handle,
void
_cogl_texture_2d_externally_modified (CoglHandle handle)
{
if (!_cogl_is_texture_2d (handle))
if (!cogl_is_texture_2d (handle))
return;
COGL_TEXTURE_2D (handle)->mipmaps_dirty = TRUE;
@ -453,7 +513,7 @@ _cogl_texture_2d_copy_from_framebuffer (CoglHandle handle,
{
CoglTexture2D *tex_2d;
g_return_if_fail (_cogl_is_texture_2d (handle));
g_return_if_fail (cogl_is_texture_2d (handle));
tex_2d = COGL_TEXTURE_2D (handle);

184
cogl/cogl-texture-2d.h Normal file
View File

@ -0,0 +1,184 @@
/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2011 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
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
*/
#ifndef __COGL_TEXURE_2D_H
#define __COGL_TEXURE_2D_H
#include <glib.h>
G_BEGIN_DECLS
/**
* SECTION:cogl-texture-2d
* @short_description: Functions for creating and manipulating 2D textures
*
* These functions allow low-level 2D textures to be allocated. These
* differ from sliced textures for example which may internally be
* made up of multiple 2D textures, or atlas textures where Cogl must
* internally modify user texture coordinates before they can be used
* by the GPU.
*
* You should be aware that many GPUs only support power of two sizes
* for #CoglTexture2D textures. You can check support for non power of
* two textures by checking for the %COGL_FEATURE_TEXTURE_NPOT feature
* via cogl_features_available ().
*/
typedef struct _CoglTexture2D CoglTexture2D;
#define COGL_TEXTURE_2D(X) ((CoglTexture2D *)X)
/**
* cogl_is_texture_2d:
* @object: A #CoglObject
*
* Gets whether the given object references an existing #CoglTexture2D
* object.
*
* Return value: %TRUE if the object references a #CoglTexture2D,
* %FALSE otherwise
*/
#define cogl_is_texture_2d cogl_is_texture_2d_EXP
gboolean
cogl_is_texture_2d (void *object);
/**
* cogl_texture_2d_new_with_size:
* @ctx: A #CoglContext
* @width: Width of the texture to allocate
* @height: Height of the texture to allocate
* @internal_format: The format of the texture
* @error: A #GError for exceptions
*
* Allocates a low-level #CoglTexture2D texture that your GPU can
* texture from directly. This is unlike sliced textures for example
* which may be comprised of multiple internal textures, or atlas
* textures where Cogl has to modify texture coordinates before they
* may be used by the GPU.
*
* <note>Many GPUs only support power of two sizes for #CoglTexture2D
* textures. You can check support for non power of two textures by
* checking for the %COGL_FEATURE_TEXTURE_NPOT feature via
* cogl_features_available ().</note>
*
* Returns: A newly allocated #CoglTexture2D, or if the size is not
* supported (because it is too large or a non-power-of-two
* size that the hardware doesn't support) it will return
* %NULL and set @error.
*
* Since: 2.0
*/
#define cogl_texture_2d_new_with_size cogl_texture_2d_new_with_size_EXP
CoglTexture2D *
cogl_texture_2d_new_with_size (CoglContext *ctx,
int width,
int height,
CoglPixelFormat internal_format,
GError **error);
/**
* cogl_texture_2d_new_from_data:
* @ctx: A #CoglContext
* @width: width of texture in pixels
* @height: height of texture in pixels
* @format: the #CoglPixelFormat the buffer is stored in in RAM
* @internal_format: the #CoglPixelFormat that will be used for storing
* the buffer on the GPU. If COGL_PIXEL_FORMAT_ANY is given then a
* premultiplied format similar to the format of the source data will
* be used. The default blending equations of Cogl expect premultiplied
* color data; the main use of passing a non-premultiplied format here
* is if you have non-premultiplied source data and are going to adjust
* the blend mode (see cogl_material_set_blend()) or use the data for
* something other than straight blending.
* @rowstride: the memory offset in bytes between the starts of
* scanlines in @data. A value of 0 will make Cogl automatically
* calculate @rowstride from @width and @format.
* @data: pointer the memory region where the source buffer resides
* @error: A #GError for exceptions
*
* Creates a new #CoglTexture2D texture based on data residing in memory.
* These are unlike sliced textures for example which may be comprised
* of multiple internal textures, or atlas textures where Cogl has to
* modify texture coordinates before they may be used by the GPU.
*
* <note>Many GPUs only support power of two sizes for #CoglTexture2D
* textures. You can check support for non power of two textures by
* checking for the %COGL_FEATURE_TEXTURE_NPOT feature via
* cogl_features_available ().</note>
*
* Returns: A newly allocated #CoglTexture2D, or if the size is not
* supported (because it is too large or a non-power-of-two
* size that the hardware doesn't support) it will return
* %NULL and set @error.
*
* Since: 2.0
*/
#define cogl_texture_2d_new_from_data cogl_texture_2d_new_from_data_EXP
CoglTexture2D *
cogl_texture_2d_new_from_data (CoglContext *ctx,
int width,
int height,
CoglPixelFormat format,
CoglPixelFormat internal_format,
int rowstride,
const guint8 *data,
GError **error);
/**
* cogl_texture_2d_new_from_foreign:
* @ctx: A #CoglContext
* @gl_handle: A GL handle for a GL_TEXTURE_2D texture object
* @width: Width of the foreign GL texture
* @height: Height of the foreign GL texture
* @internal_format: The format of the texture
* @error: A #GError for exceptions
*
* Wraps an existing GL_TEXTURE_2D texture object as a #CoglTexture2D.
* This can be used for integrating Cogl with software using OpenGL
* directly.
*
* <note>The results are undefined for passing an invalid @gl_handle
* or if @width or @height don't have the correct texture
* geometry.</note>
*
* Returns: A newly allocated #CoglTexture2D, or if Cogl could not
* validate the @gl_handle in some way (perhaps because of
* an unsupported format) it will return %NULL and set
* @error.
*
* Since: 2.0
*/
#define cogl_texture_2d_new_from_foreign cogl_texture_2d_new_from_foreign_EXP
CoglTexture2D *
cogl_texture_2d_new_from_foreign (CoglContext *ctx,
unsigned int gl_handle,
int width,
int height,
CoglPixelFormat format,
GError **error);
G_END_DECLS
#endif /* __COGL_TEXURE_2D_H */

24
cogl/cogl-texture.c
View File

@ -57,6 +57,12 @@
#include <stdlib.h>
#include <math.h>
GQuark
cogl_texture_error_quark (void)
{
return g_quark_from_static_string ("cogl-texture-error-quark");
}
/* XXX:
* The CoglHandle macros don't support any form of inheritance, so for
* now we implement the CoglHandle support for the CoglTexture
@ -385,8 +391,12 @@ cogl_texture_new_with_size (unsigned int width,
{
CoglHandle tex;
_COGL_GET_CONTEXT (ctx, COGL_INVALID_HANDLE);
/* First try creating a fast-path non-sliced texture */
tex = _cogl_texture_2d_new_with_size (width, height, flags, internal_format);
tex = cogl_texture_2d_new_with_size (ctx,
width, height, internal_format,
NULL);
/* If it fails resort to sliced textures */
if (tex == COGL_INVALID_HANDLE)
@ -451,7 +461,8 @@ cogl_texture_new_from_bitmap (CoglHandle bmp_handle,
/* If that doesn't work try a fast path 2D texture */
if ((tex = _cogl_texture_2d_new_from_bitmap (bmp_handle,
flags,
internal_format)))
internal_format,
NULL)))
return tex;
/* Otherwise create a sliced texture */
@ -530,10 +541,15 @@ cogl_texture_new_from_foreign (GLuint gl_handle,
y_pot_waste,
format);
else
return _cogl_texture_2d_new_from_foreign (gl_handle,
{
_COGL_GET_CONTEXT (ctx, COGL_INVALID_HANDLE);
return cogl_texture_2d_new_from_foreign (ctx,
gl_handle,
width,
height,
format);
format,
NULL);
}
}
gboolean

27
cogl/cogl-texture.h
View File

@ -44,6 +44,33 @@ G_BEGIN_DECLS
#define COGL_TEXTURE_MAX_WASTE 127
/**
* COGL_TEXTURE_ERROR:
*
* #GError domain for texture errors.
*
* Since: 2.0
* Stability: Unstable
*/
#define COGL_TEXTURE_ERROR (cogl_texture_error_quark ())
/**
* CoglTextureError:
* @COGL_TEXTURE_ERROR_SIZE: Unsupported size
*
* Error codes that can be thrown when allocating textures.
*
* Since: 2.0
* Stability: Unstable
*/
typedef enum {
COGL_TEXTURE_ERROR_SIZE,
COGL_TEXTURE_ERROR_FORMAT
} CoglTextureError;
GQuark cogl_texture_error_quark (void);
/**
* cogl_texture_new_with_size:
* @width: width of texture in pixels.

1
cogl/cogl.h
View File

@ -79,6 +79,7 @@ typedef struct _CoglFramebuffer CoglFramebuffer;
#include <cogl/cogl-vector.h>
#include <cogl/cogl-euler.h>
#include <cogl/cogl-quaternion.h>
#include <cogl/cogl-texture-2d.h>
#include <cogl/cogl-texture-3d.h>
#include <cogl/cogl-index-buffer.h>
#include <cogl/cogl-attribute-buffer.h>

7
cogl/winsys/cogl-winsys-glx.c
View File

@ -1799,10 +1799,11 @@ _cogl_winsys_texture_pixmap_x11_update (CoglTexturePixmapX11 *tex_pixmap,
else
{
glx_tex_pixmap->glx_tex =
_cogl_texture_2d_new_with_size (tex_pixmap->width,
cogl_texture_2d_new_with_size (ctx,
tex_pixmap->width,
tex_pixmap->height,
COGL_TEXTURE_NO_ATLAS,
texture_format);
texture_format,
NULL);
if (glx_tex_pixmap->glx_tex)
COGL_NOTE (TEXTURE_PIXMAP, "Created a texture 2d for %p",

10
doc/reference/cogl/cogl-sections.txt
View File

@ -225,6 +225,16 @@ cogl_texture_set_region
COGL_TEXTURE_MAX_WASTE
</SECTION>
<SECTION>
<FILE>cogl-texture-2d</FILE>
<TITLE>2D textures</TITLE>
CoglTexture2D
cogl_is_texture_2d
cogl_texture_2d_new_with_size
cogl_texture_2d_new_from_data
cogl_texture_2d_new_from_foreign
</SECTION>
<SECTION>
<FILE>cogl-texture-3d</FILE>
<TITLE>3D textures</TITLE>