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mutter/cogl/driver/gles/cogl-texture-driver.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 19:37:11 -04:00
/*
* 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 07:56:10 -05:00
* 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 19:37:11 -04:00
*
* Authors:
* Matthew Allum <mallum@openedhand.com>
* Neil Roberts <neil@linux.intel.com>
* Robert Bragg <robert@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cogl.h"
#include "cogl-internal.h"
#include "cogl-util.h"
#include "cogl-bitmap.h"
#include "cogl-bitmap-private.h"
#include "cogl-texture-private.h"
#include "cogl-material.h"
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 05:01:43 -04:00
#include "cogl-material-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 19:37:11 -04:00
#include "cogl-context.h"
#include "cogl-handle.h"
#include "cogl-primitives.h"
#include <string.h>
#include <stdlib.h>
#include <math.h>
#include "cogl-gles2-wrapper.h"
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 06:21:05 -05:00
void
_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.
2010-02-09 20:57:32 -05:00
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 06:21:05 -05:00
GE (glGenTextures (n, textures));
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 05:01:43 -04:00
_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 06:21:05 -05:00
switch (gl_target)
{
case GL_TEXTURE_2D:
/* GL_TEXTURE_MAG_FILTER defaults to GL_LINEAR, no need to set it */
GE( glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR) );
break;
default:
g_assert_not_reached();
}
}
}
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 19:37:11 -04:00
void
_cogl_texture_driver_prep_gl_for_pixels_upload (int pixels_rowstride,
int pixels_bpp)
{
_cogl_texture_prep_gl_alignment_for_pixels_upload (pixels_rowstride);
}
void
_cogl_texture_driver_prep_gl_for_pixels_download (int pixels_rowstride,
int pixels_bpp)
{
_cogl_texture_prep_gl_alignment_for_pixels_download (pixels_rowstride);
}
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 12:32:52 -05:00
_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 05:01:43 -04:00
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
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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 12:32:52 -05:00
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 19:37:11 -04:00
{
int bpp = _cogl_get_format_bpp (source_bmp->format);
CoglBitmap slice_bmp;
/* NB: GLES doesn't support the GL_UNPACK_ROW_LENGTH, GL_UNPACK_SKIP_PIXELS
* or GL_UNPACK_SKIP_ROWS pixel store options so we can't directly source a
* sub-region from source_bmp, we need to use a transient bitmap instead. */
/* FIXME: optimize by not copying to intermediate slice bitmap when source
* rowstride = bpp * width and the texture image is not sliced */
/* Setup temp bitmap for slice subregion */
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 12:32:52 -05:00
slice_bmp.format = source_bmp->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 19:37:11 -04:00
slice_bmp.width = width;
slice_bmp.height = height;
slice_bmp.rowstride = bpp * slice_bmp.width;
cogl: improves header and coding style consistency We've had complaints that our Cogl code/headers are a bit "special" so this is a first pass at tidying things up by giving them some consistency. These changes are all consistent with how new code in Cogl is being written, but the style isn't consistently applied across all code yet. There are two parts to this patch; but since each one required a large amount of effort to maintain tidy indenting it made sense to combine the changes to reduce the time spent re indenting the same lines. The first change is to use a consistent style for declaring function prototypes in headers. Cogl headers now consistently use this style for prototypes: return_type cogl_function_name (CoglType arg0, CoglType arg1); Not everyone likes this style, but it seems that most of the currently active Cogl developers agree on it. The second change is to constrain the use of redundant glib data types in Cogl. Uses of gint, guint, gfloat, glong, gulong and gchar have all been replaced with int, unsigned int, float, long, unsigned long and char respectively. When talking about pixel data; use of guchar has been replaced with guint8, otherwise unsigned char can be used. The glib types that we continue to use for portability are gboolean, gint{8,16,32,64}, guint{8,16,32,64} and gsize. The general intention is that Cogl should look palatable to the widest range of C programmers including those outside the Gnome community so - especially for the public API - we want to minimize the number of foreign looking typedefs.
2010-02-09 20:57:32 -05:00
slice_bmp.data = g_malloc (slice_bmp.rowstride * slice_bmp.height);
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 19:37:11 -04:00
/* Setup gl alignment to match rowstride and top-left corner */
_cogl_texture_driver_prep_gl_for_pixels_upload (slice_bmp.rowstride,
bpp);
/* Copy subregion data */
_cogl_bitmap_copy_subregion (source_bmp,
&slice_bmp,
src_x,
src_y,
0, 0,
slice_bmp.width,
slice_bmp.height);
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 05:01:43 -04:00
_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 19:37:11 -04:00
cogl: Move data only used for upload out of CoglTexture The CoglTexture struct previously contained some fields which are only used to upload data such as the CoglBitmap and the source GL format. These are now moved to a separate CoglTextureUploadData struct which only exists for the duration of one of the cogl_texture_*_new functions. In cogl-texture there are utility functions which operate on this new struct rather than on CoglTexture directly. Some of the fields that were previously stored in the CoglBitmap struct are now copied to the CoglTexture such as the width, height, format and internal GL format. The rowstride was previously stored in CoglTexture and this was publicly accessible with the cogl_texture_get_rowstride function. However this doesn't seem to be a useful function because there is no need to use the same rowstride again when uploading or downloading new data. Instead cogl_texture_get_rowstride now just calculates a suitable rowstride from the format and width of the texture.
2009-11-26 12:32:52 -05:00
GE( glTexSubImage2D (gl_target, 0,
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
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dst_x, dst_y,
width, height,
source_gl_format,
source_gl_type,
slice_bmp.data) );
/* Free temp bitmap */
g_free (slice_bmp.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 07:15:05 -05:00
void
_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 05:01:43 -04:00
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 07:15:05 -05:00
CoglBitmap *source_bmp,
GLint internal_gl_format,
GLuint source_gl_format,
GLuint source_gl_type)
{
int bpp = _cogl_get_format_bpp (source_bmp->format);
CoglBitmap bmp = *source_bmp;
gboolean bmp_owner = FALSE;
/* If the rowstride can't be specified with just GL_ALIGNMENT alone
then we need to copy the bitmap because there is no GL_ROW_LENGTH */
if (source_bmp->rowstride / bpp != source_bmp->width)
{
bmp.rowstride = bpp * bmp.width;
bmp.data = g_malloc (bmp.rowstride * bmp.height);
bmp_owner = TRUE;
_cogl_bitmap_copy_subregion (source_bmp,
&bmp,
0, 0, 0, 0,
bmp.width,
bmp.height);
}
/* Setup gl alignment to match rowstride and top-left corner */
_cogl_texture_driver_prep_gl_for_pixels_upload (bmp.rowstride,
bpp);
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 05:01:43 -04:00
_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 07:15:05 -05:00
GE( glTexImage2D (gl_target, 0,
internal_gl_format,
bmp.width, bmp.height,
0,
source_gl_format,
source_gl_type,
bmp.data) );
if (bmp_owner)
g_free (bmp.data);
}
[cogl-texture] Split CoglTexture into an abstract class + CoglTexture2dSliced cogl-texture-2d-sliced provides an implementation of CoglTexture and this seperation lays the foundation for potentially supporting atlas textures, pixmap textures (as in GLX_EXT_texture_from_pixmap) and fast-path GL_TEXTURE_{1D,2D,3D,RECTANGLE} textures in a maintainable fashion.
2009-08-30 06:36:11 -04:00
/* 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() ) */
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 19:37:11 -04:00
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 06:36:11 -04:00
_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 19:37:11 -04:00
{
[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 06:36:11 -04:00
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 19:37:11 -04:00
}
gboolean
_cogl_texture_driver_size_supported (GLenum gl_target,
GLenum gl_format,
GLenum gl_type,
int width,
int height)
{
return TRUE;
}
void
_cogl_texture_driver_try_setting_gl_border_color (
GLuint gl_target,
const GLfloat *transparent_color)
{
/* FAIL! */
}
gboolean
_cogl_pixel_format_from_gl_internal (GLenum gl_int_format,
CoglPixelFormat *out_format)
{
return TRUE;
}
CoglPixelFormat
_cogl_pixel_format_to_gl (CoglPixelFormat format,
GLenum *out_glintformat,
GLenum *out_glformat,
GLenum *out_gltype)
{
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;
}
gboolean
_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;
}
void
_cogl_texture_driver_gl_generate_mipmaps (GLenum gl_target)
{
GE( cogl_wrap_glGenerateMipmap (gl_target) );
}
CoglPixelFormat
_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;
}
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