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a0441778ad
Since the Cogl 1.18 branch is actively maintained in parallel with the
master branch; this is a counter part to commit 1b83ef938fc16b which
re-licensed the master branch to use the MIT license.
This re-licensing is a follow up to the proposal that was sent to the
Cogl mailing list:
http://lists.freedesktop.org/archives/cogl/2013-December/001465.html
Note: there was a copyright assignment policy in place for Clutter (and
therefore Cogl which was part of Clutter at the time) until the 11th of
June 2010 and so we only checked the details after that point (commit
0bbf50f905)
For each file, authors were identified via this Git command:
$ git blame -p -C -C -C20 -M -M10 0bbf50f905..HEAD
We received blanket approvals for re-licensing all Red Hat and Collabora
contributions which reduced how many people needed to be contacted
individually:
- http://lists.freedesktop.org/archives/cogl/2013-December/001470.html
- http://lists.freedesktop.org/archives/cogl/2014-January/001536.html
Individual approval requests were sent to all the other identified authors
who all confirmed the re-license on the Cogl mailinglist:
http://lists.freedesktop.org/archives/cogl/2014-January
As well as updating the copyright header in all sources files, the
COPYING file has been updated to reflect the license change and also
document the other licenses used in Cogl such as the SGI Free Software
License B, version 2.0 and the 3-clause BSD license.
This patch was not simply cherry-picked from master; but the same
methodology was used to check the source files.
757 lines
26 KiB
C
757 lines
26 KiB
C
/*
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* Cogl
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*
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* A Low Level GPU Graphics and Utilities API
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*
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* Copyright (C) 2009,2010,2011,2012 Intel Corporation.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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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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#include <config.h>
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#include <string.h>
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#include "cogl-private.h"
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#include "cogl-texture-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-texture-gl-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 && tex_2d->gl_texture)
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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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/* If NPOT textures aren't supported then the size must be a power
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of two */
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if (!cogl_has_feature (ctx, COGL_FEATURE_ID_TEXTURE_NPOT_BASIC) &&
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(!_cogl_util_is_pot (width) ||
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!_cogl_util_is_pot (height)))
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return FALSE;
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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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tex_2d->gl_texture = 0;
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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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static CoglBool
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allocate_with_size (CoglTexture2D *tex_2d,
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CoglTextureLoader *loader,
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CoglError **error)
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{
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CoglTexture *tex = COGL_TEXTURE (tex_2d);
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CoglPixelFormat internal_format;
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int width = loader->src.sized.width;
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int height = loader->src.sized.height;
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CoglContext *ctx = tex->context;
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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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GLenum gl_texture;
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internal_format =
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_cogl_texture_determine_internal_format (tex, COGL_PIXEL_FORMAT_ANY);
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if (!_cogl_texture_2d_gl_can_create (ctx,
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width,
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height,
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internal_format))
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{
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_cogl_set_error (error, COGL_TEXTURE_ERROR,
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COGL_TEXTURE_ERROR_SIZE,
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"Failed to create texture 2d due to size/format"
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" constraints");
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return FALSE;
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}
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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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gl_texture = ctx->texture_driver->gen (ctx, GL_TEXTURE_2D, internal_format);
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tex_2d->gl_internal_format = gl_intformat;
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_cogl_bind_gl_texture_transient (GL_TEXTURE_2D,
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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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GE( ctx, glDeleteTextures (1, &gl_texture) );
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return FALSE;
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}
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tex_2d->gl_texture = gl_texture;
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tex_2d->gl_internal_format = gl_intformat;
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tex_2d->internal_format = internal_format;
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_cogl_texture_set_allocated (tex, internal_format, width, height);
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return TRUE;
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}
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static CoglBool
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allocate_from_bitmap (CoglTexture2D *tex_2d,
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CoglTextureLoader *loader,
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CoglError **error)
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{
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CoglTexture *tex = COGL_TEXTURE (tex_2d);
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CoglBitmap *bmp = loader->src.bitmap.bitmap;
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CoglContext *ctx = _cogl_bitmap_get_context (bmp);
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CoglPixelFormat internal_format;
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int width = cogl_bitmap_get_width (bmp);
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int height = cogl_bitmap_get_height (bmp);
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CoglBool can_convert_in_place = loader->src.bitmap.can_convert_in_place;
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CoglBitmap *upload_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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internal_format =
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_cogl_texture_determine_internal_format (tex, cogl_bitmap_get_format (bmp));
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if (!_cogl_texture_2d_gl_can_create (ctx,
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width,
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height,
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internal_format))
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{
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_cogl_set_error (error, COGL_TEXTURE_ERROR,
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COGL_TEXTURE_ERROR_SIZE,
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"Failed to create texture 2d due to size/format"
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" constraints");
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return FALSE;
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}
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upload_bmp = _cogl_bitmap_convert_for_upload (bmp,
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internal_format,
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can_convert_in_place,
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error);
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if (upload_bmp == NULL)
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return FALSE;
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ctx->driver_vtable->pixel_format_to_gl (ctx,
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cogl_bitmap_get_format (upload_bmp),
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NULL, /* internal format */
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&gl_format,
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&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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NULL,
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NULL);
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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 (upload_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 (upload_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 (upload_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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upload_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 (upload_bmp);
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return FALSE;
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}
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tex_2d->gl_internal_format = gl_intformat;
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cogl_object_unref (upload_bmp);
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tex_2d->internal_format = internal_format;
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_cogl_texture_set_allocated (tex, internal_format, width, height);
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return TRUE;
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}
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#if defined (COGL_HAS_EGL_SUPPORT) && defined (EGL_KHR_image_base)
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static CoglBool
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allocate_from_egl_image (CoglTexture2D *tex_2d,
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CoglTextureLoader *loader,
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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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CoglPixelFormat internal_format = loader->src.egl_image.format;
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GLenum gl_error;
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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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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, loader->src.egl_image.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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GE( ctx, glDeleteTextures (1, &tex_2d->gl_texture) );
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return FALSE;
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}
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tex_2d->internal_format = internal_format;
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_cogl_texture_set_allocated (tex,
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internal_format,
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loader->src.egl_image.width,
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loader->src.egl_image.height);
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return TRUE;
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}
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#endif
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static CoglBool
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allocate_from_gl_foreign (CoglTexture2D *tex_2d,
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CoglTextureLoader *loader,
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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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CoglPixelFormat format = loader->src.gl_foreign.format;
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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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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 FALSE;
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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,
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loader->src.gl_foreign.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 FALSE;
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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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#ifdef HAVE_COGL_GL
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if (_cogl_has_private_feature
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(ctx, 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 FALSE;
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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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/* 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 FALSE;
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}
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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
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since Cogl switch to using glGenerateMipmap. Ideally I think
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cogl_texture_2d_gl_new_from_foreign should take a flags parameter so
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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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_cogl_texture_2d_set_auto_mipmap (COGL_TEXTURE (tex_2d), FALSE);
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/* Setup bitmap info */
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tex_2d->is_foreign = TRUE;
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tex_2d->mipmaps_dirty = TRUE;
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tex_2d->gl_texture = loader->src.gl_foreign.gl_handle;
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tex_2d->gl_internal_format = gl_int_format;
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/* Unknown filter */
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tex_2d->gl_legacy_texobj_min_filter = GL_FALSE;
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tex_2d->gl_legacy_texobj_mag_filter = GL_FALSE;
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tex_2d->internal_format = format;
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_cogl_texture_set_allocated (tex,
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format,
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loader->src.gl_foreign.width,
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loader->src.gl_foreign.height);
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return TRUE;
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}
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CoglBool
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_cogl_texture_2d_gl_allocate (CoglTexture *tex,
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CoglError **error)
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{
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CoglTexture2D *tex_2d = COGL_TEXTURE_2D (tex);
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CoglTextureLoader *loader = tex->loader;
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_COGL_RETURN_VAL_IF_FAIL (loader, FALSE);
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switch (loader->src_type)
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{
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case COGL_TEXTURE_SOURCE_TYPE_SIZED:
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return allocate_with_size (tex_2d, loader, error);
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case COGL_TEXTURE_SOURCE_TYPE_BITMAP:
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return allocate_from_bitmap (tex_2d, loader, error);
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case COGL_TEXTURE_SOURCE_TYPE_EGL_IMAGE:
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#if defined (COGL_HAS_EGL_SUPPORT) && defined (EGL_KHR_image_base)
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return allocate_from_egl_image (tex_2d, loader, error);
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#else
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g_return_val_if_reached (FALSE);
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#endif
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case COGL_TEXTURE_SOURCE_TYPE_GL_FOREIGN:
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return allocate_from_gl_foreign (tex_2d, loader, error);
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}
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g_return_val_if_reached (FALSE);
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}
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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;
|
|
|
|
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_gl_new_from_foreign (CoglContext *ctx,
|
|
unsigned int gl_handle,
|
|
int width,
|
|
int height,
|
|
CoglPixelFormat format)
|
|
{
|
|
CoglTextureLoader *loader;
|
|
|
|
/* NOTE: width, height and internal format are not queriable
|
|
* in GLES, hence such a function prototype.
|
|
*/
|
|
|
|
/* 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.
|
|
*/
|
|
|
|
/* Assert it is a valid GL texture object */
|
|
_COGL_RETURN_VAL_IF_FAIL (ctx->glIsTexture (gl_handle), FALSE);
|
|
|
|
/* Validate width and height */
|
|
_COGL_RETURN_VAL_IF_FAIL (width > 0 && height > 0, NULL);
|
|
|
|
loader = _cogl_texture_create_loader ();
|
|
loader->src_type = COGL_TEXTURE_SOURCE_TYPE_GL_FOREIGN;
|
|
loader->src.gl_foreign.gl_handle = gl_handle;
|
|
loader->src.gl_foreign.width = width;
|
|
loader->src.gl_foreign.height = height;
|
|
loader->src.gl_foreign.format = format;
|
|
|
|
return _cogl_texture_2d_create_base (ctx, width, height, format, loader);
|
|
}
|
|
|
|
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)
|
|
{
|
|
CoglTexture *tex = COGL_TEXTURE (tex_2d);
|
|
CoglContext *ctx = tex->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;
|
|
CoglBitmap *upload_bmp;
|
|
CoglPixelFormat upload_format;
|
|
GLenum gl_format;
|
|
GLenum gl_type;
|
|
CoglBool status = TRUE;
|
|
|
|
upload_bmp =
|
|
_cogl_bitmap_convert_for_upload (bmp,
|
|
_cogl_texture_get_format (tex),
|
|
FALSE, /* can't convert in place */
|
|
error);
|
|
if (upload_bmp == NULL)
|
|
return FALSE;
|
|
|
|
upload_format = cogl_bitmap_get_format (upload_bmp);
|
|
|
|
ctx->driver_vtable->pixel_format_to_gl (ctx,
|
|
upload_format,
|
|
NULL, /* internal format */
|
|
&gl_format,
|
|
&gl_type);
|
|
|
|
/* 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 (upload_bmp, COGL_BUFFER_ACCESS_READ, 0, &ignore);
|
|
CoglPixelFormat bpp =
|
|
_cogl_pixel_format_get_bytes_per_pixel (upload_format);
|
|
|
|
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 (upload_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,
|
|
upload_bmp,
|
|
gl_format,
|
|
gl_type,
|
|
error);
|
|
|
|
cogl_object_unref (upload_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);
|
|
}
|