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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.
653 lines
22 KiB
C
653 lines
22 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) 2007,2008,2009 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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* 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-pipeline-opengl-private.h"
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#include "cogl-context-private.h"
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#include "cogl-object-private.h"
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#include "cogl-primitives.h"
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#include "cogl-util-gl-private.h"
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#include "cogl-error-private.h"
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#include "cogl-texture-gl-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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#ifndef GL_TEXTURE_3D
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#define GL_TEXTURE_3D 0x806F
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#endif
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#ifndef GL_MAX_3D_TEXTURE_SIZE_OES
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#define GL_MAX_3D_TEXTURE_SIZE_OES 0x8073
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#endif
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/* This extension isn't available for GLES 1.1 so these won't be
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defined */
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#ifndef GL_UNPACK_ROW_LENGTH
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#define GL_UNPACK_ROW_LENGTH 0x0CF2
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#endif
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#ifndef GL_UNPACK_SKIP_ROWS
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#define GL_UNPACK_SKIP_ROWS 0x0CF3
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#endif
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#ifndef GL_UNPACK_SKIP_PIXELS
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#define GL_UNPACK_SKIP_PIXELS 0x0CF4
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#endif
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static GLuint
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_cogl_texture_driver_gen (CoglContext *ctx,
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GLenum gl_target,
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CoglPixelFormat internal_format)
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{
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GLuint tex;
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GE (ctx, glGenTextures (1, &tex));
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_cogl_bind_gl_texture_transient (gl_target, tex, 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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default:
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g_assert_not_reached();
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}
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return tex;
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}
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static void
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prep_gl_for_pixels_upload_full (CoglContext *ctx,
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int pixels_rowstride,
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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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if (_cogl_has_private_feature (ctx, COGL_PRIVATE_FEATURE_UNPACK_SUBIMAGE))
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{
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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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}
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else
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{
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g_assert (pixels_src_x == 0);
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g_assert (pixels_src_y == 0);
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}
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_cogl_texture_gl_prep_alignment_for_pixels_upload (ctx, pixels_rowstride);
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}
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static void
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_cogl_texture_driver_prep_gl_for_pixels_upload (CoglContext *ctx,
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int pixels_rowstride,
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int pixels_bpp)
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{
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prep_gl_for_pixels_upload_full (ctx,
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pixels_rowstride,
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0, 0, /* src_x/y */
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pixels_bpp);
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}
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static void
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_cogl_texture_driver_prep_gl_for_pixels_download (CoglContext *ctx,
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int pixels_rowstride,
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int image_width,
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int pixels_bpp)
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{
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_cogl_texture_gl_prep_alignment_for_pixels_download (ctx,
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pixels_bpp,
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image_width,
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pixels_rowstride);
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}
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static CoglBitmap *
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prepare_bitmap_alignment_for_upload (CoglContext *ctx,
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CoglBitmap *src_bmp,
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CoglError **error)
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{
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CoglPixelFormat format = cogl_bitmap_get_format (src_bmp);
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int bpp = _cogl_pixel_format_get_bytes_per_pixel (format);
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int src_rowstride = cogl_bitmap_get_rowstride (src_bmp);
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int width = cogl_bitmap_get_width (src_bmp);
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int alignment = 1;
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if (_cogl_has_private_feature (ctx, COGL_PRIVATE_FEATURE_UNPACK_SUBIMAGE) ||
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src_rowstride == 0)
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return cogl_object_ref (src_bmp);
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/* Work out the alignment of the source rowstride */
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alignment = 1 << (_cogl_util_ffs (src_rowstride) - 1);
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alignment = MIN (alignment, 8);
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/* If the aligned data equals the rowstride then we can upload from
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the bitmap directly using GL_UNPACK_ALIGNMENT */
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if (((width * bpp + alignment - 1) & ~(alignment - 1)) == src_rowstride)
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return cogl_object_ref (src_bmp);
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/* Otherwise we need to copy the bitmap to pack the alignment
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because GLES has no GL_ROW_LENGTH */
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else
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return _cogl_bitmap_copy (src_bmp, error);
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}
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static CoglBool
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_cogl_texture_driver_upload_subregion_to_gl (CoglContext *ctx,
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CoglTexture *texture,
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CoglBool 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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int level,
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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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CoglError **error)
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{
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GLenum gl_target;
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GLuint gl_handle;
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uint8_t *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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CoglBitmap *slice_bmp;
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int rowstride;
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GLenum gl_error;
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CoglBool status = TRUE;
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CoglError *internal_error = NULL;
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int level_width;
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int level_height;
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cogl_texture_get_gl_texture (texture, &gl_handle, &gl_target);
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/* If we have the GL_EXT_unpack_subimage extension then we can
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upload from subregions directly. Otherwise we may need to copy
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the bitmap */
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if (!_cogl_has_private_feature (ctx, COGL_PRIVATE_FEATURE_UNPACK_SUBIMAGE) &&
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(src_x != 0 || src_y != 0 ||
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width != cogl_bitmap_get_width (source_bmp) ||
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height != cogl_bitmap_get_height (source_bmp)))
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{
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slice_bmp =
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_cogl_bitmap_new_with_malloc_buffer (ctx,
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width, height,
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source_format,
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error);
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if (!slice_bmp)
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return FALSE;
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if (!_cogl_bitmap_copy_subregion (source_bmp,
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slice_bmp,
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src_x, src_y,
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0, 0, /* dst_x/y */
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width, height,
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error))
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{
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cogl_object_unref (slice_bmp);
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return FALSE;
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}
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src_x = src_y = 0;
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}
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else
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{
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slice_bmp = prepare_bitmap_alignment_for_upload (ctx, source_bmp, error);
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if (!slice_bmp)
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return FALSE;
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}
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rowstride = cogl_bitmap_get_rowstride (slice_bmp);
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/* Setup gl alignment to match rowstride and top-left corner */
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prep_gl_for_pixels_upload_full (ctx, rowstride, src_x, src_y, bpp);
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data = _cogl_bitmap_gl_bind (slice_bmp, COGL_BUFFER_ACCESS_READ, 0, &internal_error);
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/* NB: _cogl_bitmap_gl_bind() may return NULL when successfull so we
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* have to explicitly check the cogl error pointer to catch
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* problems... */
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if (internal_error)
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{
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_cogl_propagate_error (error, internal_error);
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cogl_object_unref (slice_bmp);
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return FALSE;
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}
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_cogl_bind_gl_texture_transient (gl_target, gl_handle, 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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_cogl_texture_get_level_size (texture,
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level,
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&level_width,
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&level_height,
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NULL);
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if (level_width == width && level_height == height)
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{
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/* GL gets upset if you use glTexSubImage2D to define the
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* contents of a mipmap level so we make sure to use
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* glTexImage2D if we are uploading a full mipmap level.
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*/
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ctx->glTexImage2D (gl_target,
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level,
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_cogl_texture_gl_get_format (texture),
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width,
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height,
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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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}
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else
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{
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/* GL gets upset if you use glTexSubImage2D to initialize the
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* contents of a mipmap level so if this is the first time
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* we've seen a request to upload to this level we call
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* glTexImage2D first to assert that the storage for this
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* level exists.
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*/
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if (texture->max_level < level)
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{
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ctx->glTexImage2D (gl_target,
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level,
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_cogl_texture_gl_get_format (texture),
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level_width,
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level_height,
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0,
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source_gl_format,
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source_gl_type,
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NULL);
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}
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ctx->glTexSubImage2D (gl_target,
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level,
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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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}
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if (_cogl_gl_util_catch_out_of_memory (ctx, error))
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status = FALSE;
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_cogl_bitmap_gl_unbind (slice_bmp);
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cogl_object_unref (slice_bmp);
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return status;
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}
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static CoglBool
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_cogl_texture_driver_upload_to_gl (CoglContext *ctx,
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GLenum gl_target,
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GLuint gl_handle,
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CoglBool 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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CoglError **error)
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{
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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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int rowstride;
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int bmp_width = cogl_bitmap_get_width (source_bmp);
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int bmp_height = cogl_bitmap_get_height (source_bmp);
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CoglBitmap *bmp;
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uint8_t *data;
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GLenum gl_error;
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CoglError *internal_error = NULL;
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CoglBool status = TRUE;
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bmp = prepare_bitmap_alignment_for_upload (ctx, source_bmp, error);
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if (!bmp)
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return FALSE;
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rowstride = cogl_bitmap_get_rowstride (bmp);
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/* Setup gl alignment to match rowstride and top-left corner */
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_cogl_texture_driver_prep_gl_for_pixels_upload (ctx, rowstride, bpp);
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_cogl_bind_gl_texture_transient (gl_target, gl_handle, is_foreign);
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data = _cogl_bitmap_gl_bind (bmp,
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COGL_BUFFER_ACCESS_READ,
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0, /* hints */
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&internal_error);
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/* NB: _cogl_bitmap_gl_bind() may return NULL when successful so we
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* have to explicitly check the cogl error pointer to catch
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* problems... */
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if (internal_error)
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{
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cogl_object_unref (bmp);
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_cogl_propagate_error (error, internal_error);
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return FALSE;
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}
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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_target, 0,
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internal_gl_format,
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bmp_width, bmp_height,
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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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if (_cogl_gl_util_catch_out_of_memory (ctx, error))
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status = FALSE;
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_cogl_bitmap_gl_unbind (bmp);
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cogl_object_unref (bmp);
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return status;
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}
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static CoglBool
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_cogl_texture_driver_upload_to_gl_3d (CoglContext *ctx,
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GLenum gl_target,
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GLuint gl_handle,
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CoglBool 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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CoglError **error)
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{
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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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int rowstride = cogl_bitmap_get_rowstride (source_bmp);
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int bmp_width = cogl_bitmap_get_width (source_bmp);
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int bmp_height = cogl_bitmap_get_height (source_bmp);
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uint8_t *data;
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GLenum gl_error;
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_cogl_bind_gl_texture_transient (gl_target, gl_handle, is_foreign);
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/* If the rowstride or image height can't be specified with just
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GL_ALIGNMENT alone then we need to copy the bitmap because there
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is no GL_ROW_LENGTH */
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if (rowstride / bpp != bmp_width ||
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height != bmp_height / depth)
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{
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CoglBitmap *bmp;
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int image_height = bmp_height / depth;
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CoglPixelFormat source_bmp_format = cogl_bitmap_get_format (source_bmp);
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int i;
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_cogl_texture_driver_prep_gl_for_pixels_upload (ctx, bmp_width * bpp, bpp);
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/* Initialize the texture with empty data and then upload each
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image with a sub-region update */
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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->glTexImage3D (gl_target,
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0, /* level */
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internal_gl_format,
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bmp_width,
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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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NULL);
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if (_cogl_gl_util_catch_out_of_memory (ctx, error))
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return FALSE;
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bmp = _cogl_bitmap_new_with_malloc_buffer (ctx,
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bmp_width,
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height,
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source_bmp_format,
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error);
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if (!bmp)
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return FALSE;
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for (i = 0; i < depth; i++)
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{
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if (!_cogl_bitmap_copy_subregion (source_bmp,
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bmp,
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0, image_height * i,
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0, 0,
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bmp_width,
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height,
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error))
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{
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cogl_object_unref (bmp);
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return FALSE;
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}
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data = _cogl_bitmap_gl_bind (bmp,
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COGL_BUFFER_ACCESS_READ, 0, error);
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if (!data)
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{
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cogl_object_unref (bmp);
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return FALSE;
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}
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/* Clear any GL errors */
|
|
while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
|
|
;
|
|
|
|
ctx->glTexSubImage3D (gl_target,
|
|
0, /* level */
|
|
0, /* xoffset */
|
|
0, /* yoffset */
|
|
i, /* zoffset */
|
|
bmp_width, /* width */
|
|
height, /* height */
|
|
1, /* depth */
|
|
source_gl_format,
|
|
source_gl_type,
|
|
data);
|
|
|
|
if (_cogl_gl_util_catch_out_of_memory (ctx, error))
|
|
{
|
|
cogl_object_unref (bmp);
|
|
_cogl_bitmap_gl_unbind (bmp);
|
|
return FALSE;
|
|
}
|
|
|
|
_cogl_bitmap_gl_unbind (bmp);
|
|
}
|
|
|
|
cogl_object_unref (bmp);
|
|
}
|
|
else
|
|
{
|
|
data = _cogl_bitmap_gl_bind (source_bmp, COGL_BUFFER_ACCESS_READ, 0, error);
|
|
if (!data)
|
|
return FALSE;
|
|
|
|
_cogl_texture_driver_prep_gl_for_pixels_upload (ctx, rowstride, bpp);
|
|
|
|
/* Clear any GL errors */
|
|
while ((gl_error = ctx->glGetError ()) != GL_NO_ERROR)
|
|
;
|
|
|
|
ctx->glTexImage3D (gl_target,
|
|
0, /* level */
|
|
internal_gl_format,
|
|
bmp_width,
|
|
height,
|
|
depth,
|
|
0,
|
|
source_gl_format,
|
|
source_gl_type,
|
|
data);
|
|
|
|
if (_cogl_gl_util_catch_out_of_memory (ctx, error))
|
|
{
|
|
_cogl_bitmap_gl_unbind (source_bmp);
|
|
return FALSE;
|
|
}
|
|
|
|
_cogl_bitmap_gl_unbind (source_bmp);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* NB: GLES doesn't support glGetTexImage2D, so cogl-texture will instead
|
|
* fallback to a generic render + readpixels approach to downloading
|
|
* texture data. (See _cogl_texture_draw_and_read() ) */
|
|
static CoglBool
|
|
_cogl_texture_driver_gl_get_tex_image (CoglContext *ctx,
|
|
GLenum gl_target,
|
|
GLenum dest_gl_format,
|
|
GLenum dest_gl_type,
|
|
uint8_t *dest)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
static CoglBool
|
|
_cogl_texture_driver_size_supported_3d (CoglContext *ctx,
|
|
GLenum gl_target,
|
|
GLenum gl_format,
|
|
GLenum gl_type,
|
|
int width,
|
|
int height,
|
|
int depth)
|
|
{
|
|
GLint max_size;
|
|
|
|
/* GLES doesn't support a proxy texture target so let's at least
|
|
check whether the size is greater than
|
|
GL_MAX_3D_TEXTURE_SIZE_OES */
|
|
GE( ctx, glGetIntegerv (GL_MAX_3D_TEXTURE_SIZE_OES, &max_size) );
|
|
|
|
return width <= max_size && height <= max_size && depth <= max_size;
|
|
}
|
|
|
|
static CoglBool
|
|
_cogl_texture_driver_size_supported (CoglContext *ctx,
|
|
GLenum gl_target,
|
|
GLenum gl_intformat,
|
|
GLenum gl_format,
|
|
GLenum gl_type,
|
|
int width,
|
|
int height)
|
|
{
|
|
GLint max_size;
|
|
|
|
/* GLES doesn't support a proxy texture target so let's at least
|
|
check whether the size is greater than GL_MAX_TEXTURE_SIZE */
|
|
GE( ctx, glGetIntegerv (GL_MAX_TEXTURE_SIZE, &max_size) );
|
|
|
|
return width <= max_size && height <= max_size;
|
|
}
|
|
|
|
static void
|
|
_cogl_texture_driver_try_setting_gl_border_color
|
|
(CoglContext *ctx,
|
|
GLuint gl_target,
|
|
const GLfloat *transparent_color)
|
|
{
|
|
/* FAIL! */
|
|
}
|
|
|
|
static CoglBool
|
|
_cogl_texture_driver_allows_foreign_gl_target (CoglContext *ctx,
|
|
GLenum gl_target)
|
|
{
|
|
/* Allow 2-dimensional textures only */
|
|
if (gl_target != GL_TEXTURE_2D)
|
|
return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
static CoglPixelFormat
|
|
_cogl_texture_driver_find_best_gl_get_data_format
|
|
(CoglContext *context,
|
|
CoglPixelFormat format,
|
|
GLenum *closest_gl_format,
|
|
GLenum *closest_gl_type)
|
|
{
|
|
/* Find closest format that's supported by GL
|
|
(Can't use _cogl_pixel_format_to_gl since available formats
|
|
when reading pixels on GLES are severely limited) */
|
|
*closest_gl_format = GL_RGBA;
|
|
*closest_gl_type = GL_UNSIGNED_BYTE;
|
|
return COGL_PIXEL_FORMAT_RGBA_8888;
|
|
}
|
|
|
|
const CoglTextureDriver
|
|
_cogl_texture_driver_gles =
|
|
{
|
|
_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_allows_foreign_gl_target,
|
|
_cogl_texture_driver_find_best_gl_get_data_format
|
|
};
|