f53fb5e2e0
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.
629 lines
22 KiB
C
629 lines
22 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2009,2010,2011,2012 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*
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*
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* Authors:
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* Neil Roberts <neil@linux.intel.com>
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* Robert Bragg <robert@linux.intel.com>
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include "cogl-private.h"
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#include "cogl-texture-2d-gl.h"
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#include "cogl-texture-2d-gl-private.h"
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#include "cogl-texture-2d-private.h"
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#include "cogl-pipeline-opengl-private.h"
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#include "cogl-error-private.h"
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#include "cogl-util-gl-private.h"
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void
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_cogl_texture_2d_gl_free (CoglTexture2D *tex_2d)
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{
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if (!tex_2d->is_foreign)
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_cogl_delete_gl_texture (tex_2d->gl_texture);
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}
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CoglBool
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_cogl_texture_2d_gl_can_create (CoglContext *ctx,
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int width,
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int height,
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CoglPixelFormat internal_format)
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{
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GLenum gl_intformat;
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GLenum gl_format;
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GLenum gl_type;
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ctx->driver_vtable->pixel_format_to_gl (ctx,
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internal_format,
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&gl_intformat,
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&gl_format,
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&gl_type);
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/* Check that the driver can create a texture with that size */
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if (!ctx->texture_driver->size_supported (ctx,
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GL_TEXTURE_2D,
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gl_intformat,
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gl_format,
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gl_type,
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width,
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height))
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return FALSE;
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return TRUE;
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}
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void
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_cogl_texture_2d_gl_init (CoglTexture2D *tex_2d)
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{
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/* We default to GL_LINEAR for both filters */
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tex_2d->gl_legacy_texobj_min_filter = GL_LINEAR;
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tex_2d->gl_legacy_texobj_mag_filter = GL_LINEAR;
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/* Wrap mode not yet set */
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tex_2d->gl_legacy_texobj_wrap_mode_s = GL_FALSE;
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tex_2d->gl_legacy_texobj_wrap_mode_t = GL_FALSE;
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}
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CoglTexture2D *
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_cogl_texture_2d_gl_new_with_size (CoglContext *ctx,
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int width,
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int height,
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CoglPixelFormat internal_format,
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CoglError **error)
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{
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CoglTexture2D *tex_2d;
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GLenum gl_intformat;
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GLenum gl_format;
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GLenum gl_type;
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GLenum gl_error;
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internal_format = ctx->driver_vtable->pixel_format_to_gl (ctx,
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internal_format,
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&gl_intformat,
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&gl_format,
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&gl_type);
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tex_2d = _cogl_texture_2d_create_base (ctx,
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width, height,
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internal_format);
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tex_2d->gl_texture =
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ctx->texture_driver->gen (ctx, GL_TEXTURE_2D, internal_format);
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_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
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tex_2d->gl_texture,
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tex_2d->is_foreign);
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/* Clear any GL errors */
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while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
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;
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ctx->glTexImage2D (GL_TEXTURE_2D, 0, gl_intformat,
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width, height, 0, gl_format, gl_type, NULL);
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if (_cogl_gl_util_catch_out_of_memory (ctx, error))
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{
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cogl_object_unref (tex_2d);
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return NULL;
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}
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return tex_2d;
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}
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CoglTexture2D *
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_cogl_texture_2d_gl_new_from_bitmap (CoglBitmap *bmp,
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CoglPixelFormat internal_format,
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CoglError **error)
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{
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CoglContext *ctx = _cogl_bitmap_get_context (bmp);
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CoglTexture2D *tex_2d;
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CoglBitmap *dst_bmp;
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GLenum gl_intformat;
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GLenum gl_format;
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GLenum gl_type;
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dst_bmp = _cogl_texture_prepare_for_upload (bmp,
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internal_format,
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&internal_format,
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&gl_intformat,
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&gl_format,
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&gl_type,
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error);
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if (!dst_bmp)
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return NULL;
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tex_2d = _cogl_texture_2d_create_base (ctx,
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cogl_bitmap_get_width (bmp),
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cogl_bitmap_get_height (bmp),
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internal_format);
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/* Keep a copy of the first pixel so that if glGenerateMipmap isn't
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supported we can fallback to using GL_GENERATE_MIPMAP */
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if (!cogl_has_feature (ctx, COGL_FEATURE_ID_OFFSCREEN))
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{
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CoglError *ignore = NULL;
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uint8_t *data = _cogl_bitmap_map (dst_bmp,
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COGL_BUFFER_ACCESS_READ, 0,
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&ignore);
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CoglPixelFormat format = cogl_bitmap_get_format (dst_bmp);
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tex_2d->first_pixel.gl_format = gl_format;
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tex_2d->first_pixel.gl_type = gl_type;
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if (data)
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{
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memcpy (tex_2d->first_pixel.data, data,
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_cogl_pixel_format_get_bytes_per_pixel (format));
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_cogl_bitmap_unmap (dst_bmp);
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}
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else
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{
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g_warning ("Failed to read first pixel of bitmap for "
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"glGenerateMipmap fallback");
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cogl_error_free (ignore);
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memset (tex_2d->first_pixel.data, 0,
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_cogl_pixel_format_get_bytes_per_pixel (format));
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}
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}
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tex_2d->gl_texture =
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ctx->texture_driver->gen (ctx, GL_TEXTURE_2D, internal_format);
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if (!ctx->texture_driver->upload_to_gl (ctx,
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GL_TEXTURE_2D,
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tex_2d->gl_texture,
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FALSE,
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dst_bmp,
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gl_intformat,
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gl_format,
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gl_type,
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error))
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{
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cogl_object_unref (dst_bmp);
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cogl_object_unref (tex_2d);
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return NULL;
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}
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tex_2d->gl_format = gl_intformat;
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cogl_object_unref (dst_bmp);
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return tex_2d;
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}
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#if defined (COGL_HAS_EGL_SUPPORT) && defined (EGL_KHR_image_base)
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CoglTexture2D *
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_cogl_egl_texture_2d_gl_new_from_image (CoglContext *ctx,
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int width,
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int height,
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CoglPixelFormat format,
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EGLImageKHR image,
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CoglError **error)
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{
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CoglTexture2D *tex_2d;
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GLenum gl_error;
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tex_2d = _cogl_texture_2d_create_base (ctx,
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width, height,
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format);
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tex_2d->gl_texture =
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ctx->texture_driver->gen (ctx, GL_TEXTURE_2D, format);
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_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
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tex_2d->gl_texture,
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FALSE);
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while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
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;
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ctx->glEGLImageTargetTexture2D (GL_TEXTURE_2D, image);
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if (ctx->glGetError () != GL_NO_ERROR)
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{
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_cogl_set_error (error,
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COGL_TEXTURE_ERROR,
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COGL_TEXTURE_ERROR_BAD_PARAMETER,
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"Could not create a CoglTexture2D from a given "
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"EGLImage");
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return NULL;
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}
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return tex_2d;
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}
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#endif
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void
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_cogl_texture_2d_gl_flush_legacy_texobj_filters (CoglTexture *tex,
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GLenum min_filter,
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GLenum mag_filter)
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{
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CoglTexture2D *tex_2d = COGL_TEXTURE_2D (tex);
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CoglContext *ctx = tex->context;
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if (min_filter == tex_2d->gl_legacy_texobj_min_filter
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&& mag_filter == tex_2d->gl_legacy_texobj_mag_filter)
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return;
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/* Store new values */
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tex_2d->gl_legacy_texobj_min_filter = min_filter;
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tex_2d->gl_legacy_texobj_mag_filter = mag_filter;
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/* Apply new filters to the texture */
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_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
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tex_2d->gl_texture,
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tex_2d->is_foreign);
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GE( ctx, glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, mag_filter) );
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GE( ctx, glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, min_filter) );
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}
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void
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_cogl_texture_2d_gl_flush_legacy_texobj_wrap_modes (CoglTexture *tex,
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GLenum wrap_mode_s,
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GLenum wrap_mode_t,
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GLenum wrap_mode_p)
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{
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CoglTexture2D *tex_2d = COGL_TEXTURE_2D (tex);
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CoglContext *ctx = tex->context;
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/* Only set the wrap mode if it's different from the current value
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to avoid too many GL calls. Texture 2D doesn't make use of the r
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coordinate so we can ignore its wrap mode */
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if (tex_2d->gl_legacy_texobj_wrap_mode_s != wrap_mode_s ||
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tex_2d->gl_legacy_texobj_wrap_mode_t != wrap_mode_t)
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{
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_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
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tex_2d->gl_texture,
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tex_2d->is_foreign);
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GE( ctx, glTexParameteri (GL_TEXTURE_2D,
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GL_TEXTURE_WRAP_S,
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wrap_mode_s) );
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GE( ctx, glTexParameteri (GL_TEXTURE_2D,
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GL_TEXTURE_WRAP_T,
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wrap_mode_t) );
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tex_2d->gl_legacy_texobj_wrap_mode_s = wrap_mode_s;
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tex_2d->gl_legacy_texobj_wrap_mode_t = wrap_mode_t;
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}
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}
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CoglTexture2D *
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cogl_texture_2d_new_from_foreign (CoglContext *ctx,
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unsigned int gl_handle,
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int width,
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int height,
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CoglPixelFormat format,
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CoglError **error)
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{
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/* NOTE: width, height and internal format are not queriable
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* in GLES, hence such a function prototype.
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*/
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GLenum gl_error = 0;
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GLint gl_compressed = GL_FALSE;
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GLenum gl_int_format = 0;
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CoglTexture2D *tex_2d;
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/* Assert it is a valid GL texture object */
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g_return_val_if_fail (ctx->glIsTexture (gl_handle), NULL);
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if (!ctx->texture_driver->allows_foreign_gl_target (ctx, GL_TEXTURE_2D))
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{
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_cogl_set_error (error,
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COGL_SYSTEM_ERROR,
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COGL_SYSTEM_ERROR_UNSUPPORTED,
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"Foreign GL_TEXTURE_2D textures are not "
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"supported by your system");
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return NULL;
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}
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|
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/* Make sure binding succeeds */
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while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
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;
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_cogl_bind_gl_texture_transient (GL_TEXTURE_2D, gl_handle, TRUE);
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if (ctx->glGetError () != GL_NO_ERROR)
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{
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_cogl_set_error (error,
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COGL_SYSTEM_ERROR,
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COGL_SYSTEM_ERROR_UNSUPPORTED,
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"Failed to bind foreign GL_TEXTURE_2D texture");
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return NULL;
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}
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/* Obtain texture parameters
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(only level 0 we are interested in) */
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#if HAVE_COGL_GL
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if ((ctx->private_feature_flags &
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COGL_PRIVATE_FEATURE_QUERY_TEXTURE_PARAMETERS))
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{
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GE( ctx, glGetTexLevelParameteriv (GL_TEXTURE_2D, 0,
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GL_TEXTURE_COMPRESSED,
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&gl_compressed) );
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{
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GLint val;
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GE( ctx, glGetTexLevelParameteriv (GL_TEXTURE_2D, 0,
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GL_TEXTURE_INTERNAL_FORMAT,
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&val) );
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gl_int_format = val;
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}
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/* If we can query GL for the actual pixel format then we'll ignore
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the passed in format and use that. */
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if (!ctx->driver_vtable->pixel_format_from_gl_internal (ctx,
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gl_int_format,
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&format))
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{
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_cogl_set_error (error,
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COGL_SYSTEM_ERROR,
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COGL_SYSTEM_ERROR_UNSUPPORTED,
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"Unsupported internal format for foreign texture");
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return NULL;
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}
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}
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else
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#endif
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{
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/* Otherwise we'll assume we can derive the GL format from the
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passed in format */
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ctx->driver_vtable->pixel_format_to_gl (ctx,
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format,
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&gl_int_format,
|
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NULL,
|
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NULL);
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}
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|
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/* Note: We always trust the given width and height without querying
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* the texture object because the user may be creating a Cogl
|
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* texture for a texture_from_pixmap object where glTexImage2D may
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* not have been called and the texture_from_pixmap spec doesn't
|
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* clarify that it is reliable to query back the size from OpenGL.
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*/
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/* Validate width and height */
|
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g_return_val_if_fail (width > 0 && height > 0, NULL);
|
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|
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/* Compressed texture images not supported */
|
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if (gl_compressed == GL_TRUE)
|
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{
|
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_cogl_set_error (error,
|
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COGL_SYSTEM_ERROR,
|
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COGL_SYSTEM_ERROR_UNSUPPORTED,
|
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"Compressed foreign textures aren't currently supported");
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return NULL;
|
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}
|
|
|
|
/* Note: previously this code would query the texture object for
|
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whether it has GL_GENERATE_MIPMAP enabled to determine whether to
|
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auto-generate the mipmap. This doesn't make much sense any more
|
|
since Cogl switch to using glGenerateMipmap. Ideally I think
|
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cogl_texture_2d_new_from_foreign should take a flags parameter so
|
|
that the application can decide whether it wants
|
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auto-mipmapping. To be compatible with existing code, Cogl now
|
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disables its own auto-mipmapping but leaves the value of
|
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GL_GENERATE_MIPMAP alone so that it would still work but without
|
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the dirtiness tracking that Cogl would do. */
|
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|
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/* Create new texture */
|
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tex_2d = _cogl_texture_2d_create_base (ctx,
|
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width, height,
|
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format);
|
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_cogl_texture_2d_set_auto_mipmap (COGL_TEXTURE (tex_2d), FALSE);
|
|
|
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/* 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;
|
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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);
|
|
}
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unsigned int
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_cogl_texture_2d_gl_get_gl_handle (CoglTexture2D *tex_2d)
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{
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return tex_2d->gl_texture;
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}
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void
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_cogl_texture_2d_gl_generate_mipmap (CoglTexture2D *tex_2d)
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{
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CoglContext *ctx = COGL_TEXTURE (tex_2d)->context;
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_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
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tex_2d->gl_texture,
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tex_2d->is_foreign);
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/* glGenerateMipmap is defined in the FBO extension. If it's not
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available we'll fallback to temporarily enabling
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GL_GENERATE_MIPMAP and reuploading the first pixel */
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if (cogl_has_feature (ctx, COGL_FEATURE_ID_OFFSCREEN))
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ctx->texture_driver->gl_generate_mipmaps (ctx, GL_TEXTURE_2D);
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#if defined(HAVE_COGL_GLES) || defined(HAVE_COGL_GL)
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else
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{
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GE( ctx, glTexParameteri (GL_TEXTURE_2D,
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GL_GENERATE_MIPMAP,
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GL_TRUE) );
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GE( ctx, glTexSubImage2D (GL_TEXTURE_2D, 0, 0, 0, 1, 1,
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tex_2d->first_pixel.gl_format,
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tex_2d->first_pixel.gl_type,
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tex_2d->first_pixel.data) );
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GE( ctx, glTexParameteri (GL_TEXTURE_2D,
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GL_GENERATE_MIPMAP,
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GL_FALSE) );
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}
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#endif
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}
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CoglBool
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_cogl_texture_2d_gl_copy_from_bitmap (CoglTexture2D *tex_2d,
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CoglBitmap *bmp,
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int dst_x,
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int dst_y,
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int src_x,
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int src_y,
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int width,
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int height,
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CoglError **error)
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{
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CoglTexture *tex = COGL_TEXTURE (tex_2d);
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CoglContext *ctx = tex->context;
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GLenum gl_format;
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GLenum gl_type;
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CoglBool status = TRUE;
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bmp = _cogl_texture_prepare_for_upload (bmp,
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cogl_texture_get_format (tex),
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NULL,
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NULL,
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&gl_format,
|
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&gl_type,
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error);
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if (!bmp)
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return FALSE;
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/* If this touches the first pixel then we'll update our copy */
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if (dst_x == 0 && dst_y == 0 &&
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!cogl_has_feature (ctx, COGL_FEATURE_ID_OFFSCREEN))
|
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{
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CoglError *ignore = NULL;
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uint8_t *data =
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_cogl_bitmap_map (bmp, COGL_BUFFER_ACCESS_READ, 0, &ignore);
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CoglPixelFormat bpp =
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_cogl_pixel_format_get_bytes_per_pixel (cogl_bitmap_get_format (bmp));
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tex_2d->first_pixel.gl_format = gl_format;
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tex_2d->first_pixel.gl_type = gl_type;
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if (data)
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{
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memcpy (tex_2d->first_pixel.data,
|
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data + cogl_bitmap_get_rowstride (bmp) * src_y + bpp * src_x,
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bpp);
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_cogl_bitmap_unmap (bmp);
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}
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else
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{
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g_warning ("Failed to read first bitmap pixel for "
|
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"glGenerateMipmap fallback");
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cogl_error_free (ignore);
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memset (tex_2d->first_pixel.data, 0, bpp);
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}
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}
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|
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/* Send data to GL */
|
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status = ctx->texture_driver->upload_subregion_to_gl (ctx,
|
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GL_TEXTURE_2D,
|
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tex_2d->gl_texture,
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FALSE,
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src_x, src_y,
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dst_x, dst_y,
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width, height,
|
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bmp,
|
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gl_format,
|
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gl_type,
|
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error);
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|
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cogl_object_unref (bmp);
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return status;
|
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}
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|
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void
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_cogl_texture_2d_gl_get_data (CoglTexture2D *tex_2d,
|
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CoglPixelFormat format,
|
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int rowstride,
|
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uint8_t *data)
|
|
{
|
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CoglContext *ctx = COGL_TEXTURE (tex_2d)->context;
|
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int bpp;
|
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GLenum gl_format;
|
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GLenum gl_type;
|
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|
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bpp = _cogl_pixel_format_get_bytes_per_pixel (format);
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|
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ctx->driver_vtable->pixel_format_to_gl (ctx,
|
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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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