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mutter/cogl/driver/gl/cogl-texture-2d-gl.c
Robert Bragg f53fb5e2e0 Allow propogation of OOM errors to apps 
This allows apps to catch out-of-memory errors when allocating textures.

Textures can be pretty huge at times and so it's quite possible for an
application to try and allocate more memory than is available. It's also
very possible that the application can take some action in response to
reduce memory pressure (such as freeing up texture caches perhaps) so
we shouldn't just automatically abort like we do for trivial heap
allocations.

These public functions now take a CoglError argument so applications can
catch out of memory errors:

cogl_buffer_map
cogl_buffer_map_range
cogl_buffer_set_data
cogl_framebuffer_read_pixels_into_bitmap
cogl_pixel_buffer_new
cogl_texture_new_from_data
cogl_texture_new_from_bitmap

Note: we've been quite conservative with how many apis we let throw OOM
CoglErrors since we don't really want to put a burdon on developers to
be checking for errors with every cogl api call. So long as there is
some lower level api for apps to use that let them catch OOM errors
for everything necessary that's enough and we don't have to make more
convenient apis more awkward to use.

The main focus is on bitmaps and texture allocations since they
can be particularly large and prone to failing.

A new cogl_attribute_buffer_new_with_size() function has been added in
case developers need to catch OOM errors when allocating attribute buffers
whereby they can first use _buffer_new_with_size() (which doesn't take a
CoglError) followed by cogl_buffer_set_data() which will lazily allocate
the buffer storage and report OOM errors.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit f7735e141ad537a253b02afa2a8238f96340b978)

Note: since we can't break the API for Cogl 1.x then actually the main
purpose of cherry picking this patch is to keep in-line with changes
on the master branch so that we can easily cherry-pick patches.

All the api changes relating stable apis released on the 1.12 branch
have been reverted as part of cherry-picking this patch so this most
just applies all the internal plumbing changes that enable us to
correctly propagate OOM errors.
2013-01-22 17:48:07 +00:00

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/*
* 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-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);
_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_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_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,
CoglFramebuffer *src_fb,
int dst_x,
int dst_y,
int src_x,
int src_y,
int width,
int height)
{
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 (cogl_get_draw_framebuffer (),
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;
_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
tex_2d->gl_texture,
tex_2d->is_foreign);
/* 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))
ctx->texture_driver->gl_generate_mipmaps (ctx, GL_TEXTURE_2D);
#if defined(HAVE_COGL_GLES) || defined(HAVE_COGL_GL)
else
{
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,
CoglBitmap *bmp,
int dst_x,
int dst_y,
int src_x,
int src_y,
int width,
int height,
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);
}
}
/* Send data to GL */
status = ctx->texture_driver->upload_subregion_to_gl (ctx,
GL_TEXTURE_2D,
tex_2d->gl_texture,
FALSE,
src_x, src_y,
dst_x, dst_y,
width, height,
bmp,
gl_format,
gl_type,
error);
cogl_object_unref (bmp);
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;
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,
tex_2d->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);
}
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