5a814e386a
There was a lot of redundancy in how we tracked the width and height of different texture types which is greatly simplified by adding width and height members to CoglTexture directly and removing the get_width and get_height vfuncs from CoglTextureVtable Reviewed-by: Neil Roberts <neil@linux.intel.com> (cherry picked from commit 3236e47723e4287d5e0023f29083521aeffc75dd)
637 lines
22 KiB
C
637 lines
22 KiB
C
/*
|
|
* Cogl
|
|
*
|
|
* An object oriented GL/GLES Abstraction/Utility Layer
|
|
*
|
|
* Copyright (C) 2009,2010,2011,2012 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:
|
|
* Neil Roberts <neil@linux.intel.com>
|
|
* Robert Bragg <robert@linux.intel.com>
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <string.h>
|
|
|
|
#include "cogl-private.h"
|
|
#include "cogl-texture-2d-gl.h"
|
|
#include "cogl-texture-2d-gl-private.h"
|
|
#include "cogl-texture-2d-private.h"
|
|
#include "cogl-texture-gl-private.h"
|
|
#include "cogl-pipeline-opengl-private.h"
|
|
#include "cogl-error-private.h"
|
|
#include "cogl-util-gl-private.h"
|
|
|
|
void
|
|
_cogl_texture_2d_gl_free (CoglTexture2D *tex_2d)
|
|
{
|
|
if (!tex_2d->is_foreign)
|
|
_cogl_delete_gl_texture (tex_2d->gl_texture);
|
|
}
|
|
|
|
CoglBool
|
|
_cogl_texture_2d_gl_can_create (CoglContext *ctx,
|
|
int width,
|
|
int height,
|
|
CoglPixelFormat internal_format)
|
|
{
|
|
GLenum gl_intformat;
|
|
GLenum gl_format;
|
|
GLenum gl_type;
|
|
|
|
ctx->driver_vtable->pixel_format_to_gl (ctx,
|
|
internal_format,
|
|
&gl_intformat,
|
|
&gl_format,
|
|
&gl_type);
|
|
|
|
/* Check that the driver can create a texture with that size */
|
|
if (!ctx->texture_driver->size_supported (ctx,
|
|
GL_TEXTURE_2D,
|
|
gl_intformat,
|
|
gl_format,
|
|
gl_type,
|
|
width,
|
|
height))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
_cogl_texture_2d_gl_init (CoglTexture2D *tex_2d)
|
|
{
|
|
/* We default to GL_LINEAR for both filters */
|
|
tex_2d->gl_legacy_texobj_min_filter = GL_LINEAR;
|
|
tex_2d->gl_legacy_texobj_mag_filter = GL_LINEAR;
|
|
|
|
/* Wrap mode not yet set */
|
|
tex_2d->gl_legacy_texobj_wrap_mode_s = GL_FALSE;
|
|
tex_2d->gl_legacy_texobj_wrap_mode_t = GL_FALSE;
|
|
}
|
|
|
|
CoglTexture2D *
|
|
_cogl_texture_2d_gl_new_with_size (CoglContext *ctx,
|
|
int width,
|
|
int height,
|
|
CoglPixelFormat internal_format,
|
|
CoglError **error)
|
|
{
|
|
CoglTexture2D *tex_2d;
|
|
GLenum gl_intformat;
|
|
GLenum gl_format;
|
|
GLenum gl_type;
|
|
GLenum gl_error;
|
|
|
|
internal_format = ctx->driver_vtable->pixel_format_to_gl (ctx,
|
|
internal_format,
|
|
&gl_intformat,
|
|
&gl_format,
|
|
&gl_type);
|
|
|
|
tex_2d = _cogl_texture_2d_create_base (ctx,
|
|
width, height,
|
|
internal_format);
|
|
|
|
tex_2d->gl_texture =
|
|
ctx->texture_driver->gen (ctx, GL_TEXTURE_2D, internal_format);
|
|
|
|
tex_2d->gl_internal_format = gl_intformat;
|
|
|
|
_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
|
|
tex_2d->gl_texture,
|
|
tex_2d->is_foreign);
|
|
|
|
/* Clear any GL errors */
|
|
while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
|
|
;
|
|
|
|
ctx->glTexImage2D (GL_TEXTURE_2D, 0, gl_intformat,
|
|
width, height, 0, gl_format, gl_type, NULL);
|
|
|
|
if (_cogl_gl_util_catch_out_of_memory (ctx, error))
|
|
{
|
|
cogl_object_unref (tex_2d);
|
|
return NULL;
|
|
}
|
|
|
|
return tex_2d;
|
|
}
|
|
|
|
CoglTexture2D *
|
|
_cogl_texture_2d_gl_new_from_bitmap (CoglBitmap *bmp,
|
|
CoglPixelFormat internal_format,
|
|
CoglError **error)
|
|
{
|
|
CoglContext *ctx = _cogl_bitmap_get_context (bmp);
|
|
CoglTexture2D *tex_2d;
|
|
CoglBitmap *dst_bmp;
|
|
GLenum gl_intformat;
|
|
GLenum gl_format;
|
|
GLenum gl_type;
|
|
|
|
dst_bmp = _cogl_texture_prepare_for_upload (bmp,
|
|
internal_format,
|
|
&internal_format,
|
|
&gl_intformat,
|
|
&gl_format,
|
|
&gl_type,
|
|
error);
|
|
if (!dst_bmp)
|
|
return NULL;
|
|
|
|
tex_2d = _cogl_texture_2d_create_base (ctx,
|
|
cogl_bitmap_get_width (bmp),
|
|
cogl_bitmap_get_height (bmp),
|
|
internal_format);
|
|
|
|
/* Keep a copy of the first pixel so that if glGenerateMipmap isn't
|
|
supported we can fallback to using GL_GENERATE_MIPMAP */
|
|
if (!cogl_has_feature (ctx, COGL_FEATURE_ID_OFFSCREEN))
|
|
{
|
|
CoglError *ignore = NULL;
|
|
uint8_t *data = _cogl_bitmap_map (dst_bmp,
|
|
COGL_BUFFER_ACCESS_READ, 0,
|
|
&ignore);
|
|
CoglPixelFormat format = cogl_bitmap_get_format (dst_bmp);
|
|
|
|
tex_2d->first_pixel.gl_format = gl_format;
|
|
tex_2d->first_pixel.gl_type = gl_type;
|
|
|
|
if (data)
|
|
{
|
|
memcpy (tex_2d->first_pixel.data, data,
|
|
_cogl_pixel_format_get_bytes_per_pixel (format));
|
|
_cogl_bitmap_unmap (dst_bmp);
|
|
}
|
|
else
|
|
{
|
|
g_warning ("Failed to read first pixel of bitmap for "
|
|
"glGenerateMipmap fallback");
|
|
cogl_error_free (ignore);
|
|
memset (tex_2d->first_pixel.data, 0,
|
|
_cogl_pixel_format_get_bytes_per_pixel (format));
|
|
}
|
|
}
|
|
|
|
tex_2d->gl_texture =
|
|
ctx->texture_driver->gen (ctx, GL_TEXTURE_2D, internal_format);
|
|
if (!ctx->texture_driver->upload_to_gl (ctx,
|
|
GL_TEXTURE_2D,
|
|
tex_2d->gl_texture,
|
|
FALSE,
|
|
dst_bmp,
|
|
gl_intformat,
|
|
gl_format,
|
|
gl_type,
|
|
error))
|
|
{
|
|
cogl_object_unref (dst_bmp);
|
|
cogl_object_unref (tex_2d);
|
|
return NULL;
|
|
}
|
|
|
|
tex_2d->gl_internal_format = gl_intformat;
|
|
|
|
cogl_object_unref (dst_bmp);
|
|
|
|
return tex_2d;
|
|
|
|
}
|
|
|
|
#if defined (COGL_HAS_EGL_SUPPORT) && defined (EGL_KHR_image_base)
|
|
CoglTexture2D *
|
|
_cogl_egl_texture_2d_gl_new_from_image (CoglContext *ctx,
|
|
int width,
|
|
int height,
|
|
CoglPixelFormat format,
|
|
EGLImageKHR image,
|
|
CoglError **error)
|
|
{
|
|
CoglTexture2D *tex_2d;
|
|
GLenum gl_error;
|
|
|
|
tex_2d = _cogl_texture_2d_create_base (ctx,
|
|
width, height,
|
|
format);
|
|
|
|
tex_2d->gl_texture =
|
|
ctx->texture_driver->gen (ctx, GL_TEXTURE_2D, format);
|
|
_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
|
|
tex_2d->gl_texture,
|
|
FALSE);
|
|
|
|
while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
|
|
;
|
|
ctx->glEGLImageTargetTexture2D (GL_TEXTURE_2D, image);
|
|
if (ctx->glGetError () != GL_NO_ERROR)
|
|
{
|
|
_cogl_set_error (error,
|
|
COGL_TEXTURE_ERROR,
|
|
COGL_TEXTURE_ERROR_BAD_PARAMETER,
|
|
"Could not create a CoglTexture2D from a given "
|
|
"EGLImage");
|
|
return NULL;
|
|
}
|
|
|
|
return tex_2d;
|
|
}
|
|
#endif
|
|
|
|
void
|
|
_cogl_texture_2d_gl_flush_legacy_texobj_filters (CoglTexture *tex,
|
|
GLenum min_filter,
|
|
GLenum mag_filter)
|
|
{
|
|
CoglTexture2D *tex_2d = COGL_TEXTURE_2D (tex);
|
|
CoglContext *ctx = tex->context;
|
|
|
|
if (min_filter == tex_2d->gl_legacy_texobj_min_filter
|
|
&& mag_filter == tex_2d->gl_legacy_texobj_mag_filter)
|
|
return;
|
|
|
|
/* Store new values */
|
|
tex_2d->gl_legacy_texobj_min_filter = min_filter;
|
|
tex_2d->gl_legacy_texobj_mag_filter = mag_filter;
|
|
|
|
/* Apply new filters to the texture */
|
|
_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
|
|
tex_2d->gl_texture,
|
|
tex_2d->is_foreign);
|
|
GE( ctx, glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, mag_filter) );
|
|
GE( ctx, glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, min_filter) );
|
|
}
|
|
|
|
void
|
|
_cogl_texture_2d_gl_flush_legacy_texobj_wrap_modes (CoglTexture *tex,
|
|
GLenum wrap_mode_s,
|
|
GLenum wrap_mode_t,
|
|
GLenum wrap_mode_p)
|
|
{
|
|
CoglTexture2D *tex_2d = COGL_TEXTURE_2D (tex);
|
|
CoglContext *ctx = tex->context;
|
|
|
|
/* Only set the wrap mode if it's different from the current value
|
|
to avoid too many GL calls. Texture 2D doesn't make use of the r
|
|
coordinate so we can ignore its wrap mode */
|
|
if (tex_2d->gl_legacy_texobj_wrap_mode_s != wrap_mode_s ||
|
|
tex_2d->gl_legacy_texobj_wrap_mode_t != wrap_mode_t)
|
|
{
|
|
_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
|
|
tex_2d->gl_texture,
|
|
tex_2d->is_foreign);
|
|
GE( ctx, glTexParameteri (GL_TEXTURE_2D,
|
|
GL_TEXTURE_WRAP_S,
|
|
wrap_mode_s) );
|
|
GE( ctx, glTexParameteri (GL_TEXTURE_2D,
|
|
GL_TEXTURE_WRAP_T,
|
|
wrap_mode_t) );
|
|
|
|
tex_2d->gl_legacy_texobj_wrap_mode_s = wrap_mode_s;
|
|
tex_2d->gl_legacy_texobj_wrap_mode_t = wrap_mode_t;
|
|
}
|
|
}
|
|
|
|
CoglTexture2D *
|
|
cogl_texture_2d_new_from_foreign (CoglContext *ctx,
|
|
unsigned int gl_handle,
|
|
int width,
|
|
int height,
|
|
CoglPixelFormat format,
|
|
CoglError **error)
|
|
{
|
|
/* NOTE: width, height and internal format are not queriable
|
|
* in GLES, hence such a function prototype.
|
|
*/
|
|
|
|
GLenum gl_error = 0;
|
|
GLint gl_compressed = GL_FALSE;
|
|
GLenum gl_int_format = 0;
|
|
CoglTexture2D *tex_2d;
|
|
|
|
/* Assert it is a valid GL texture object */
|
|
g_return_val_if_fail (ctx->glIsTexture (gl_handle), NULL);
|
|
|
|
if (!ctx->texture_driver->allows_foreign_gl_target (ctx, GL_TEXTURE_2D))
|
|
{
|
|
_cogl_set_error (error,
|
|
COGL_SYSTEM_ERROR,
|
|
COGL_SYSTEM_ERROR_UNSUPPORTED,
|
|
"Foreign GL_TEXTURE_2D textures are not "
|
|
"supported by your system");
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/* Make sure binding succeeds */
|
|
while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
|
|
;
|
|
|
|
_cogl_bind_gl_texture_transient (GL_TEXTURE_2D, gl_handle, TRUE);
|
|
if (ctx->glGetError () != GL_NO_ERROR)
|
|
{
|
|
_cogl_set_error (error,
|
|
COGL_SYSTEM_ERROR,
|
|
COGL_SYSTEM_ERROR_UNSUPPORTED,
|
|
"Failed to bind foreign GL_TEXTURE_2D texture");
|
|
return NULL;
|
|
}
|
|
|
|
/* Obtain texture parameters
|
|
(only level 0 we are interested in) */
|
|
|
|
#if HAVE_COGL_GL
|
|
if ((ctx->private_feature_flags &
|
|
COGL_PRIVATE_FEATURE_QUERY_TEXTURE_PARAMETERS))
|
|
{
|
|
GE( ctx, glGetTexLevelParameteriv (GL_TEXTURE_2D, 0,
|
|
GL_TEXTURE_COMPRESSED,
|
|
&gl_compressed) );
|
|
|
|
{
|
|
GLint val;
|
|
|
|
GE( ctx, glGetTexLevelParameteriv (GL_TEXTURE_2D, 0,
|
|
GL_TEXTURE_INTERNAL_FORMAT,
|
|
&val) );
|
|
|
|
gl_int_format = val;
|
|
}
|
|
|
|
/* If we can query GL for the actual pixel format then we'll ignore
|
|
the passed in format and use that. */
|
|
if (!ctx->driver_vtable->pixel_format_from_gl_internal (ctx,
|
|
gl_int_format,
|
|
&format))
|
|
{
|
|
_cogl_set_error (error,
|
|
COGL_SYSTEM_ERROR,
|
|
COGL_SYSTEM_ERROR_UNSUPPORTED,
|
|
"Unsupported internal format for foreign texture");
|
|
return NULL;
|
|
}
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
/* Otherwise we'll assume we can derive the GL format from the
|
|
passed in format */
|
|
ctx->driver_vtable->pixel_format_to_gl (ctx,
|
|
format,
|
|
&gl_int_format,
|
|
NULL,
|
|
NULL);
|
|
}
|
|
|
|
/* Note: We always trust the given width and height without querying
|
|
* the texture object because the user may be creating a Cogl
|
|
* texture for a texture_from_pixmap object where glTexImage2D may
|
|
* not have been called and the texture_from_pixmap spec doesn't
|
|
* clarify that it is reliable to query back the size from OpenGL.
|
|
*/
|
|
|
|
/* Validate width and height */
|
|
g_return_val_if_fail (width > 0 && height > 0, NULL);
|
|
|
|
/* Compressed texture images not supported */
|
|
if (gl_compressed == GL_TRUE)
|
|
{
|
|
_cogl_set_error (error,
|
|
COGL_SYSTEM_ERROR,
|
|
COGL_SYSTEM_ERROR_UNSUPPORTED,
|
|
"Compressed foreign textures aren't currently supported");
|
|
return NULL;
|
|
}
|
|
|
|
/* Note: previously this code would query the texture object for
|
|
whether it has GL_GENERATE_MIPMAP enabled to determine whether to
|
|
auto-generate the mipmap. This doesn't make much sense any more
|
|
since Cogl switch to using glGenerateMipmap. Ideally I think
|
|
cogl_texture_2d_new_from_foreign should take a flags parameter so
|
|
that the application can decide whether it wants
|
|
auto-mipmapping. To be compatible with existing code, Cogl now
|
|
disables its own auto-mipmapping but leaves the value of
|
|
GL_GENERATE_MIPMAP alone so that it would still work but without
|
|
the dirtiness tracking that Cogl would do. */
|
|
|
|
/* Create new texture */
|
|
tex_2d = _cogl_texture_2d_create_base (ctx,
|
|
width, height,
|
|
format);
|
|
_cogl_texture_2d_set_auto_mipmap (COGL_TEXTURE (tex_2d), FALSE);
|
|
|
|
/* Setup bitmap info */
|
|
tex_2d->is_foreign = TRUE;
|
|
tex_2d->mipmaps_dirty = TRUE;
|
|
|
|
tex_2d->format = format;
|
|
|
|
tex_2d->gl_texture = gl_handle;
|
|
tex_2d->gl_internal_format = gl_int_format;
|
|
|
|
/* Unknown filter */
|
|
tex_2d->gl_legacy_texobj_min_filter = GL_FALSE;
|
|
tex_2d->gl_legacy_texobj_mag_filter = GL_FALSE;
|
|
|
|
return tex_2d;
|
|
}
|
|
|
|
void
|
|
_cogl_texture_2d_gl_copy_from_framebuffer (CoglTexture2D *tex_2d,
|
|
int src_x,
|
|
int src_y,
|
|
int width,
|
|
int height,
|
|
CoglFramebuffer *src_fb,
|
|
int dst_x,
|
|
int dst_y,
|
|
int level)
|
|
{
|
|
CoglContext *ctx = COGL_TEXTURE (tex_2d)->context;
|
|
|
|
/* Make sure the current framebuffers are bound, though we don't need to
|
|
* flush the clip state here since we aren't going to draw to the
|
|
* framebuffer. */
|
|
_cogl_framebuffer_flush_state (ctx->current_draw_buffer,
|
|
src_fb,
|
|
COGL_FRAMEBUFFER_STATE_ALL &
|
|
~COGL_FRAMEBUFFER_STATE_CLIP);
|
|
|
|
_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
|
|
tex_2d->gl_texture,
|
|
tex_2d->is_foreign);
|
|
|
|
ctx->glCopyTexSubImage2D (GL_TEXTURE_2D,
|
|
0, /* level */
|
|
dst_x, dst_y,
|
|
src_x, src_y,
|
|
width, height);
|
|
}
|
|
|
|
unsigned int
|
|
_cogl_texture_2d_gl_get_gl_handle (CoglTexture2D *tex_2d)
|
|
{
|
|
return tex_2d->gl_texture;
|
|
}
|
|
|
|
void
|
|
_cogl_texture_2d_gl_generate_mipmap (CoglTexture2D *tex_2d)
|
|
{
|
|
CoglContext *ctx = COGL_TEXTURE (tex_2d)->context;
|
|
|
|
/* glGenerateMipmap is defined in the FBO extension. If it's not
|
|
available we'll fallback to temporarily enabling
|
|
GL_GENERATE_MIPMAP and reuploading the first pixel */
|
|
if (cogl_has_feature (ctx, COGL_FEATURE_ID_OFFSCREEN))
|
|
_cogl_texture_gl_generate_mipmaps (COGL_TEXTURE (tex_2d));
|
|
#if defined(HAVE_COGL_GLES) || defined(HAVE_COGL_GL)
|
|
else
|
|
{
|
|
_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
|
|
tex_2d->gl_texture,
|
|
tex_2d->is_foreign);
|
|
|
|
GE( ctx, glTexParameteri (GL_TEXTURE_2D,
|
|
GL_GENERATE_MIPMAP,
|
|
GL_TRUE) );
|
|
GE( ctx, glTexSubImage2D (GL_TEXTURE_2D, 0, 0, 0, 1, 1,
|
|
tex_2d->first_pixel.gl_format,
|
|
tex_2d->first_pixel.gl_type,
|
|
tex_2d->first_pixel.data) );
|
|
GE( ctx, glTexParameteri (GL_TEXTURE_2D,
|
|
GL_GENERATE_MIPMAP,
|
|
GL_FALSE) );
|
|
}
|
|
#endif
|
|
}
|
|
|
|
CoglBool
|
|
_cogl_texture_2d_gl_copy_from_bitmap (CoglTexture2D *tex_2d,
|
|
int src_x,
|
|
int src_y,
|
|
int width,
|
|
int height,
|
|
CoglBitmap *bmp,
|
|
int dst_x,
|
|
int dst_y,
|
|
int level,
|
|
CoglError **error)
|
|
{
|
|
CoglTexture *tex = COGL_TEXTURE (tex_2d);
|
|
CoglContext *ctx = tex->context;
|
|
GLenum gl_format;
|
|
GLenum gl_type;
|
|
CoglBool status = TRUE;
|
|
|
|
bmp = _cogl_texture_prepare_for_upload (bmp,
|
|
cogl_texture_get_format (tex),
|
|
NULL,
|
|
NULL,
|
|
&gl_format,
|
|
&gl_type,
|
|
error);
|
|
if (!bmp)
|
|
return FALSE;
|
|
|
|
/* If this touches the first pixel then we'll update our copy */
|
|
if (dst_x == 0 && dst_y == 0 &&
|
|
!cogl_has_feature (ctx, COGL_FEATURE_ID_OFFSCREEN))
|
|
{
|
|
CoglError *ignore = NULL;
|
|
uint8_t *data =
|
|
_cogl_bitmap_map (bmp, COGL_BUFFER_ACCESS_READ, 0, &ignore);
|
|
CoglPixelFormat bpp =
|
|
_cogl_pixel_format_get_bytes_per_pixel (cogl_bitmap_get_format (bmp));
|
|
|
|
tex_2d->first_pixel.gl_format = gl_format;
|
|
tex_2d->first_pixel.gl_type = gl_type;
|
|
|
|
if (data)
|
|
{
|
|
memcpy (tex_2d->first_pixel.data,
|
|
data + cogl_bitmap_get_rowstride (bmp) * src_y + bpp * src_x,
|
|
bpp);
|
|
_cogl_bitmap_unmap (bmp);
|
|
}
|
|
else
|
|
{
|
|
g_warning ("Failed to read first bitmap pixel for "
|
|
"glGenerateMipmap fallback");
|
|
cogl_error_free (ignore);
|
|
memset (tex_2d->first_pixel.data, 0, bpp);
|
|
}
|
|
}
|
|
|
|
status = ctx->texture_driver->upload_subregion_to_gl (ctx,
|
|
tex,
|
|
FALSE,
|
|
src_x, src_y,
|
|
dst_x, dst_y,
|
|
width, height,
|
|
level,
|
|
bmp,
|
|
gl_format,
|
|
gl_type,
|
|
error);
|
|
|
|
cogl_object_unref (bmp);
|
|
|
|
_cogl_texture_gl_maybe_update_max_level (tex, level);
|
|
|
|
return status;
|
|
}
|
|
|
|
void
|
|
_cogl_texture_2d_gl_get_data (CoglTexture2D *tex_2d,
|
|
CoglPixelFormat format,
|
|
int rowstride,
|
|
uint8_t *data)
|
|
{
|
|
CoglContext *ctx = COGL_TEXTURE (tex_2d)->context;
|
|
int bpp;
|
|
int width = COGL_TEXTURE (tex_2d)->width;
|
|
GLenum gl_format;
|
|
GLenum gl_type;
|
|
|
|
bpp = _cogl_pixel_format_get_bytes_per_pixel (format);
|
|
|
|
ctx->driver_vtable->pixel_format_to_gl (ctx,
|
|
format,
|
|
NULL, /* internal format */
|
|
&gl_format,
|
|
&gl_type);
|
|
|
|
ctx->texture_driver->prep_gl_for_pixels_download (ctx,
|
|
rowstride,
|
|
width,
|
|
bpp);
|
|
|
|
_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
|
|
tex_2d->gl_texture,
|
|
tex_2d->is_foreign);
|
|
|
|
ctx->texture_driver->gl_get_tex_image (ctx,
|
|
GL_TEXTURE_2D,
|
|
gl_format,
|
|
gl_type,
|
|
data);
|
|
}
|