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680f63a48c
The cogl.h header is meant to be the public header for including the 1.x api used by Clutter so we should stop using that as a convenient way to include all likely prototypes and typedefs. Actually we already do a good job of listing the specific headers we depend on in each of the .c files we have so mostly this patch just strip out the redundant includes for cogl.h with a few fixups where that broke the build. Reviewed-by: Neil Roberts <neil@linux.intel.com>
591 lines
19 KiB
C
591 lines
19 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) 2007,2008,2009 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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* Matthew Allum <mallum@openedhand.com>
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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 "cogl-private.h"
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#include "cogl-util.h"
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#include "cogl-bitmap.h"
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#include "cogl-bitmap-private.h"
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#include "cogl-texture-private.h"
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#include "cogl-pipeline.h"
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#include "cogl-context-private.h"
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#include "cogl-handle.h"
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#include "cogl-primitives.h"
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#include "cogl-pipeline-opengl-private.h"
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#include <string.h>
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#include <stdlib.h>
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#include <math.h>
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static void
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_cogl_texture_driver_gen (GLenum gl_target,
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GLsizei n,
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GLuint *textures)
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{
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unsigned int i;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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GE (ctx, glGenTextures (n, textures));
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for (i = 0; i < n; i++)
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{
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_cogl_bind_gl_texture_transient (gl_target,
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textures[i],
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FALSE);
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switch (gl_target)
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{
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case GL_TEXTURE_2D:
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case GL_TEXTURE_3D:
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/* GL_TEXTURE_MAG_FILTER defaults to GL_LINEAR, no need to set it */
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GE( ctx, glTexParameteri (gl_target,
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GL_TEXTURE_MIN_FILTER,
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GL_LINEAR) );
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break;
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case GL_TEXTURE_RECTANGLE_ARB:
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/* Texture rectangles already default to GL_LINEAR so nothing
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needs to be done */
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break;
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default:
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g_assert_not_reached();
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}
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}
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}
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/* OpenGL - unlike GLES - can upload a sub region of pixel data from a larger
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* source buffer */
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static void
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prep_gl_for_pixels_upload_full (int pixels_rowstride,
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int image_height,
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int pixels_src_x,
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int pixels_src_y,
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int pixels_bpp)
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{
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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GE( ctx, glPixelStorei (GL_UNPACK_ROW_LENGTH,
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pixels_rowstride / pixels_bpp) );
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GE( ctx, glPixelStorei (GL_UNPACK_SKIP_PIXELS, pixels_src_x) );
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GE( ctx, glPixelStorei (GL_UNPACK_SKIP_ROWS, pixels_src_y) );
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if (cogl_has_feature (ctx, COGL_FEATURE_ID_TEXTURE_3D))
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GE( ctx, glPixelStorei (GL_UNPACK_IMAGE_HEIGHT, image_height) );
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_cogl_texture_prep_gl_alignment_for_pixels_upload (pixels_rowstride);
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}
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static void
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_cogl_texture_driver_prep_gl_for_pixels_upload (int pixels_rowstride,
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int pixels_bpp)
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{
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prep_gl_for_pixels_upload_full (pixels_rowstride, 0, 0, 0, pixels_bpp);
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}
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/* OpenGL - unlike GLES - can download pixel data into a sub region of
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* a larger destination buffer */
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static void
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prep_gl_for_pixels_download_full (int pixels_rowstride,
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int image_height,
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int pixels_src_x,
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int pixels_src_y,
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int pixels_bpp)
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{
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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GE( ctx, glPixelStorei (GL_PACK_ROW_LENGTH, pixels_rowstride / pixels_bpp) );
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GE( ctx, glPixelStorei (GL_PACK_SKIP_PIXELS, pixels_src_x) );
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GE( ctx, glPixelStorei (GL_PACK_SKIP_ROWS, pixels_src_y) );
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if (cogl_has_feature (ctx, COGL_FEATURE_ID_TEXTURE_3D))
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GE( ctx, glPixelStorei (GL_PACK_IMAGE_HEIGHT, image_height) );
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_cogl_texture_prep_gl_alignment_for_pixels_download (pixels_rowstride);
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}
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static void
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_cogl_texture_driver_prep_gl_for_pixels_download (int pixels_rowstride,
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int pixels_bpp)
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{
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prep_gl_for_pixels_download_full (pixels_rowstride, 0, 0, 0, pixels_bpp);
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}
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static void
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_cogl_texture_driver_upload_subregion_to_gl (GLenum gl_target,
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GLuint gl_handle,
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gboolean is_foreign,
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int src_x,
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int src_y,
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int dst_x,
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int dst_y,
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int width,
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int height,
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CoglBitmap *source_bmp,
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GLuint source_gl_format,
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GLuint source_gl_type)
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{
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guint8 *data;
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CoglPixelFormat source_format = _cogl_bitmap_get_format (source_bmp);
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int bpp = _cogl_pixel_format_get_bytes_per_pixel (source_format);
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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data = _cogl_bitmap_bind (source_bmp, COGL_BUFFER_ACCESS_READ, 0);
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/* Setup gl alignment to match rowstride and top-left corner */
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prep_gl_for_pixels_upload_full (_cogl_bitmap_get_rowstride (source_bmp),
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0,
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src_x,
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src_y,
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bpp);
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_cogl_bind_gl_texture_transient (gl_target, gl_handle, is_foreign);
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GE( ctx, glTexSubImage2D (gl_target, 0,
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dst_x, dst_y,
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width, height,
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source_gl_format,
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source_gl_type,
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data) );
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_cogl_bitmap_unbind (source_bmp);
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}
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static void
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_cogl_texture_driver_upload_to_gl (GLenum gl_target,
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GLuint gl_handle,
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gboolean is_foreign,
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CoglBitmap *source_bmp,
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GLint internal_gl_format,
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GLuint source_gl_format,
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GLuint source_gl_type)
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{
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guint8 *data;
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CoglPixelFormat source_format = _cogl_bitmap_get_format (source_bmp);
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int bpp = _cogl_pixel_format_get_bytes_per_pixel (source_format);
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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data = _cogl_bitmap_bind (source_bmp, COGL_BUFFER_ACCESS_READ, 0);
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/* Setup gl alignment to match rowstride and top-left corner */
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prep_gl_for_pixels_upload_full (_cogl_bitmap_get_rowstride (source_bmp),
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0, 0, 0, bpp);
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_cogl_bind_gl_texture_transient (gl_target, gl_handle, is_foreign);
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GE( ctx, glTexImage2D (gl_target, 0,
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internal_gl_format,
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_cogl_bitmap_get_width (source_bmp),
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_cogl_bitmap_get_height (source_bmp),
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0,
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source_gl_format,
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source_gl_type,
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data) );
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_cogl_bitmap_unbind (source_bmp);
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}
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static void
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_cogl_texture_driver_upload_to_gl_3d (GLenum gl_target,
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GLuint gl_handle,
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gboolean is_foreign,
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GLint height,
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GLint depth,
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CoglBitmap *source_bmp,
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GLint internal_gl_format,
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GLuint source_gl_format,
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GLuint source_gl_type)
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{
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guint8 *data;
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CoglPixelFormat source_format = _cogl_bitmap_get_format (source_bmp);
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int bpp = _cogl_pixel_format_get_bytes_per_pixel (source_format);
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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data = _cogl_bitmap_bind (source_bmp, COGL_BUFFER_ACCESS_READ, 0);
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/* Setup gl alignment to match rowstride and top-left corner */
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prep_gl_for_pixels_upload_full (_cogl_bitmap_get_rowstride (source_bmp),
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(_cogl_bitmap_get_height (source_bmp) /
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depth),
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0, 0, bpp);
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_cogl_bind_gl_texture_transient (gl_target, gl_handle, is_foreign);
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GE( ctx, glTexImage3D (gl_target,
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0, /* level */
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internal_gl_format,
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_cogl_bitmap_get_width (source_bmp),
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height,
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depth,
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0,
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source_gl_format,
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source_gl_type,
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data) );
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_cogl_bitmap_unbind (source_bmp);
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}
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static gboolean
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_cogl_texture_driver_gl_get_tex_image (GLenum gl_target,
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GLenum dest_gl_format,
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GLenum dest_gl_type,
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guint8 *dest)
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{
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_COGL_GET_CONTEXT (ctx, FALSE);
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GE (ctx, glGetTexImage (gl_target,
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0, /* level */
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dest_gl_format,
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dest_gl_type,
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(GLvoid *)dest));
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return TRUE;
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}
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static gboolean
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_cogl_texture_driver_size_supported_3d (GLenum gl_target,
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GLenum gl_format,
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GLenum gl_type,
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int width,
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int height,
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int depth)
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{
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GLenum proxy_target;
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GLint new_width = 0;
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_COGL_GET_CONTEXT (ctx, FALSE);
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if (gl_target == GL_TEXTURE_3D)
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proxy_target = GL_PROXY_TEXTURE_3D;
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else
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/* Unknown target, assume it's not supported */
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return FALSE;
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/* Proxy texture allows for a quick check for supported size */
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GE( ctx, glTexImage3D (proxy_target, 0, GL_RGBA,
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width, height, depth, 0 /* border */,
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gl_format, gl_type, NULL) );
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GE( ctx, glGetTexLevelParameteriv (proxy_target, 0,
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GL_TEXTURE_WIDTH, &new_width) );
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return new_width != 0;
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}
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static gboolean
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_cogl_texture_driver_size_supported (GLenum gl_target,
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GLenum gl_format,
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GLenum gl_type,
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int width,
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int height)
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{
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GLenum proxy_target;
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GLint new_width = 0;
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_COGL_GET_CONTEXT (ctx, FALSE);
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if (gl_target == GL_TEXTURE_2D)
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proxy_target = GL_PROXY_TEXTURE_2D;
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#if HAVE_COGL_GL
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else if (gl_target == GL_TEXTURE_RECTANGLE_ARB)
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proxy_target = GL_PROXY_TEXTURE_RECTANGLE_ARB;
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#endif
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else
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/* Unknown target, assume it's not supported */
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return FALSE;
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/* Proxy texture allows for a quick check for supported size */
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GE( ctx, glTexImage2D (proxy_target, 0, GL_RGBA,
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width, height, 0 /* border */,
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gl_format, gl_type, NULL) );
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GE( ctx, glGetTexLevelParameteriv (proxy_target, 0,
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GL_TEXTURE_WIDTH, &new_width) );
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return new_width != 0;
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}
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static void
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_cogl_texture_driver_try_setting_gl_border_color (
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GLuint gl_target,
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const GLfloat *transparent_color)
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{
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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/* Use a transparent border color so that we can leave the
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color buffer alone when using texture co-ordinates
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outside of the texture */
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GE( ctx, glTexParameterfv (gl_target, GL_TEXTURE_BORDER_COLOR,
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transparent_color) );
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}
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static gboolean
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_cogl_texture_driver_pixel_format_from_gl_internal (GLenum gl_int_format,
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CoglPixelFormat *out_format)
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{
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/* It doesn't really matter we convert to exact same
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format (some have no cogl match anyway) since format
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is re-matched against cogl when getting or setting
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texture image data.
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*/
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switch (gl_int_format)
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{
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case GL_ALPHA: case GL_ALPHA4: case GL_ALPHA8:
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case GL_ALPHA12: case GL_ALPHA16:
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*out_format = COGL_PIXEL_FORMAT_A_8;
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return TRUE;
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case GL_LUMINANCE: case GL_LUMINANCE4: case GL_LUMINANCE8:
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case GL_LUMINANCE12: case GL_LUMINANCE16:
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*out_format = COGL_PIXEL_FORMAT_G_8;
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return TRUE;
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case GL_RGB: case GL_RGB4: case GL_RGB5: case GL_RGB8:
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case GL_RGB10: case GL_RGB12: case GL_RGB16: case GL_R3_G3_B2:
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*out_format = COGL_PIXEL_FORMAT_RGB_888;
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return TRUE;
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case GL_RGBA: case GL_RGBA2: case GL_RGBA4: case GL_RGB5_A1:
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case GL_RGBA8: case GL_RGB10_A2: case GL_RGBA12: case GL_RGBA16:
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*out_format = COGL_PIXEL_FORMAT_RGBA_8888;
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return TRUE;
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}
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return FALSE;
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}
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static CoglPixelFormat
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_cogl_texture_driver_pixel_format_to_gl (CoglPixelFormat format,
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GLenum *out_glintformat,
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GLenum *out_glformat,
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GLenum *out_gltype)
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{
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CoglPixelFormat required_format;
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GLenum glintformat;
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GLenum glformat;
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GLenum gltype;
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required_format = format;
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/* Find GL equivalents */
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switch (format)
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{
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case COGL_PIXEL_FORMAT_A_8:
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glintformat = GL_ALPHA;
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glformat = GL_ALPHA;
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gltype = GL_UNSIGNED_BYTE;
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break;
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case COGL_PIXEL_FORMAT_G_8:
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glintformat = GL_LUMINANCE;
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glformat = GL_LUMINANCE;
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gltype = GL_UNSIGNED_BYTE;
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break;
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case COGL_PIXEL_FORMAT_RGB_888:
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glintformat = GL_RGB;
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glformat = GL_RGB;
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gltype = GL_UNSIGNED_BYTE;
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break;
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case COGL_PIXEL_FORMAT_BGR_888:
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glintformat = GL_RGB;
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glformat = GL_BGR;
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gltype = GL_UNSIGNED_BYTE;
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break;
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case COGL_PIXEL_FORMAT_RGBA_8888:
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case COGL_PIXEL_FORMAT_RGBA_8888_PRE:
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glintformat = GL_RGBA;
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glformat = GL_RGBA;
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gltype = GL_UNSIGNED_BYTE;
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break;
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case COGL_PIXEL_FORMAT_BGRA_8888:
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case COGL_PIXEL_FORMAT_BGRA_8888_PRE:
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glintformat = GL_RGBA;
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glformat = GL_BGRA;
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gltype = GL_UNSIGNED_BYTE;
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break;
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/* The following two types of channel ordering
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* have no GL equivalent unless defined using
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* system word byte ordering */
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case COGL_PIXEL_FORMAT_ARGB_8888:
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case COGL_PIXEL_FORMAT_ARGB_8888_PRE:
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glintformat = GL_RGBA;
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glformat = GL_BGRA;
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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gltype = GL_UNSIGNED_INT_8_8_8_8;
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#else
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gltype = GL_UNSIGNED_INT_8_8_8_8_REV;
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#endif
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break;
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case COGL_PIXEL_FORMAT_ABGR_8888:
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case COGL_PIXEL_FORMAT_ABGR_8888_PRE:
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glintformat = GL_RGBA;
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glformat = GL_RGBA;
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#if G_BYTE_ORDER == G_LITTLE_ENDIAN
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gltype = GL_UNSIGNED_INT_8_8_8_8;
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#else
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gltype = GL_UNSIGNED_INT_8_8_8_8_REV;
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#endif
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break;
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case COGL_PIXEL_FORMAT_RGBA_1010102:
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case COGL_PIXEL_FORMAT_RGBA_1010102_PRE:
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glintformat = GL_RGBA;
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glformat = GL_RGBA;
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gltype = GL_UNSIGNED_INT_10_10_10_2;
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break;
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case COGL_PIXEL_FORMAT_BGRA_1010102:
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case COGL_PIXEL_FORMAT_BGRA_1010102_PRE:
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glintformat = GL_RGBA;
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glformat = GL_BGRA;
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gltype = GL_UNSIGNED_INT_10_10_10_2;
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break;
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case COGL_PIXEL_FORMAT_ABGR_2101010:
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case COGL_PIXEL_FORMAT_ABGR_2101010_PRE:
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glintformat = GL_RGBA;
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glformat = GL_RGBA;
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gltype = GL_UNSIGNED_INT_2_10_10_10_REV;
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break;
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case COGL_PIXEL_FORMAT_ARGB_2101010:
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case COGL_PIXEL_FORMAT_ARGB_2101010_PRE:
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glintformat = GL_RGBA;
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glformat = GL_BGRA;
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gltype = GL_UNSIGNED_INT_2_10_10_10_REV;
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break;
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|
|
|
/* The following three types of channel ordering
|
|
* are always defined using system word byte
|
|
* ordering (even according to GLES spec) */
|
|
case COGL_PIXEL_FORMAT_RGB_565:
|
|
glintformat = GL_RGB;
|
|
glformat = GL_RGB;
|
|
gltype = GL_UNSIGNED_SHORT_5_6_5;
|
|
break;
|
|
case COGL_PIXEL_FORMAT_RGBA_4444:
|
|
case COGL_PIXEL_FORMAT_RGBA_4444_PRE:
|
|
glintformat = GL_RGBA;
|
|
glformat = GL_RGBA;
|
|
gltype = GL_UNSIGNED_SHORT_4_4_4_4;
|
|
break;
|
|
case COGL_PIXEL_FORMAT_RGBA_5551:
|
|
case COGL_PIXEL_FORMAT_RGBA_5551_PRE:
|
|
glintformat = GL_RGBA;
|
|
glformat = GL_RGBA;
|
|
gltype = GL_UNSIGNED_SHORT_5_5_5_1;
|
|
break;
|
|
|
|
case COGL_PIXEL_FORMAT_ANY:
|
|
case COGL_PIXEL_FORMAT_YUV:
|
|
g_assert_not_reached ();
|
|
break;
|
|
}
|
|
|
|
if (out_glintformat != NULL)
|
|
*out_glintformat = glintformat;
|
|
if (out_glformat != NULL)
|
|
*out_glformat = glformat;
|
|
if (out_gltype != NULL)
|
|
*out_gltype = gltype;
|
|
|
|
return required_format;
|
|
}
|
|
|
|
static gboolean
|
|
_cogl_texture_driver_allows_foreign_gl_target (GLenum gl_target)
|
|
{
|
|
/* GL_ARB_texture_rectangle textures are supported if they are
|
|
created from foreign because some chipsets have trouble with
|
|
GL_ARB_texture_non_power_of_two. There is no Cogl call to create
|
|
them directly to emphasize the fact that they don't work fully
|
|
(for example, no mipmapping and complicated shader support) */
|
|
|
|
/* Allow 2-dimensional or rectangle textures only */
|
|
if (gl_target != GL_TEXTURE_2D && gl_target != GL_TEXTURE_RECTANGLE_ARB)
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
_cogl_texture_driver_gl_generate_mipmaps (GLenum gl_target)
|
|
{
|
|
_COGL_GET_CONTEXT (ctx, NO_RETVAL);
|
|
|
|
GE( ctx, glGenerateMipmap (gl_target) );
|
|
}
|
|
|
|
static CoglPixelFormat
|
|
_cogl_texture_driver_find_best_gl_get_data_format (
|
|
CoglPixelFormat format,
|
|
GLenum *closest_gl_format,
|
|
GLenum *closest_gl_type)
|
|
{
|
|
/* Find closest format that's supported by GL */
|
|
return _cogl_texture_driver_pixel_format_to_gl (format,
|
|
NULL, /* don't need */
|
|
closest_gl_format,
|
|
closest_gl_type);
|
|
}
|
|
|
|
const CoglTextureDriver
|
|
_cogl_texture_driver_gl =
|
|
{
|
|
_cogl_texture_driver_gen,
|
|
_cogl_texture_driver_prep_gl_for_pixels_upload,
|
|
_cogl_texture_driver_upload_subregion_to_gl,
|
|
_cogl_texture_driver_upload_to_gl,
|
|
_cogl_texture_driver_upload_to_gl_3d,
|
|
_cogl_texture_driver_prep_gl_for_pixels_download,
|
|
_cogl_texture_driver_gl_get_tex_image,
|
|
_cogl_texture_driver_size_supported,
|
|
_cogl_texture_driver_size_supported_3d,
|
|
_cogl_texture_driver_try_setting_gl_border_color,
|
|
_cogl_texture_driver_pixel_format_from_gl_internal,
|
|
_cogl_texture_driver_pixel_format_to_gl,
|
|
_cogl_texture_driver_allows_foreign_gl_target,
|
|
_cogl_texture_driver_gl_generate_mipmaps,
|
|
_cogl_texture_driver_find_best_gl_get_data_format
|
|
};
|