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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.
759 lines
25 KiB
C
759 lines
25 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) 2010 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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* Authors:
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* Neil Roberts <neil@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-texture-private.h"
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#include "cogl-texture-3d-private.h"
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#include "cogl-texture-3d.h"
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#include "cogl-texture-gl-private.h"
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#include "cogl-texture-driver.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-journal-private.h"
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#include "cogl-pipeline-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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#include <string.h>
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#include <math.h>
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/* These might not be defined on GLES */
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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_TEXTURE_WRAP_R
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#define GL_TEXTURE_WRAP_R 0x8072
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#endif
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static void _cogl_texture_3d_free (CoglTexture3D *tex_3d);
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COGL_TEXTURE_DEFINE (Texture3D, texture_3d);
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static const CoglTextureVtable cogl_texture_3d_vtable;
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static void
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_cogl_texture_3d_gl_flush_legacy_texobj_wrap_modes (CoglTexture *tex,
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GLenum wrap_mode_s,
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GLenum wrap_mode_t,
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GLenum wrap_mode_p)
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{
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CoglTexture3D *tex_3d = COGL_TEXTURE_3D (tex);
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CoglContext *ctx = tex->context;
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/* Only set the wrap mode if it's different from the current value
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to avoid too many GL calls. */
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if (tex_3d->gl_legacy_texobj_wrap_mode_s != wrap_mode_s ||
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tex_3d->gl_legacy_texobj_wrap_mode_t != wrap_mode_t ||
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tex_3d->gl_legacy_texobj_wrap_mode_p != wrap_mode_p)
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{
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_cogl_bind_gl_texture_transient (GL_TEXTURE_3D,
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tex_3d->gl_texture,
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FALSE);
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GE( ctx, glTexParameteri (GL_TEXTURE_3D,
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GL_TEXTURE_WRAP_S,
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wrap_mode_s) );
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GE( ctx, glTexParameteri (GL_TEXTURE_3D,
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GL_TEXTURE_WRAP_T,
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wrap_mode_t) );
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GE( ctx, glTexParameteri (GL_TEXTURE_3D,
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GL_TEXTURE_WRAP_R,
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wrap_mode_p) );
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tex_3d->gl_legacy_texobj_wrap_mode_s = wrap_mode_s;
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tex_3d->gl_legacy_texobj_wrap_mode_t = wrap_mode_t;
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tex_3d->gl_legacy_texobj_wrap_mode_p = wrap_mode_p;
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}
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}
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static void
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_cogl_texture_3d_free (CoglTexture3D *tex_3d)
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{
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if (tex_3d->gl_texture)
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_cogl_delete_gl_texture (tex_3d->gl_texture);
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/* Chain up */
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_cogl_texture_free (COGL_TEXTURE (tex_3d));
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}
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static void
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_cogl_texture_3d_set_auto_mipmap (CoglTexture *tex,
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CoglBool value)
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{
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CoglTexture3D *tex_3d = COGL_TEXTURE_3D (tex);
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tex_3d->auto_mipmap = value;
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}
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static CoglTexture3D *
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_cogl_texture_3d_create_base (CoglContext *ctx,
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int width,
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int height,
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int depth,
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CoglPixelFormat internal_format,
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CoglTextureLoader *loader)
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{
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CoglTexture3D *tex_3d = g_new (CoglTexture3D, 1);
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CoglTexture *tex = COGL_TEXTURE (tex_3d);
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_cogl_texture_init (tex, ctx, width, height,
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internal_format, loader, &cogl_texture_3d_vtable);
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tex_3d->gl_texture = 0;
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tex_3d->depth = depth;
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tex_3d->mipmaps_dirty = TRUE;
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tex_3d->auto_mipmap = TRUE;
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/* We default to GL_LINEAR for both filters */
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tex_3d->gl_legacy_texobj_min_filter = GL_LINEAR;
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tex_3d->gl_legacy_texobj_mag_filter = GL_LINEAR;
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/* Wrap mode not yet set */
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tex_3d->gl_legacy_texobj_wrap_mode_s = GL_FALSE;
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tex_3d->gl_legacy_texobj_wrap_mode_t = GL_FALSE;
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tex_3d->gl_legacy_texobj_wrap_mode_p = GL_FALSE;
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return _cogl_texture_3d_object_new (tex_3d);
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}
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CoglTexture3D *
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cogl_texture_3d_new_with_size (CoglContext *ctx,
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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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CoglTextureLoader *loader = _cogl_texture_create_loader ();
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loader->src_type = COGL_TEXTURE_SOURCE_TYPE_SIZED;
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loader->src.sized.width = width;
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loader->src.sized.height = height;
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loader->src.sized.depth = depth;
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return _cogl_texture_3d_create_base (ctx, width, height, depth,
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COGL_PIXEL_FORMAT_RGBA_8888_PRE,
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loader);
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}
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CoglTexture3D *
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cogl_texture_3d_new_from_bitmap (CoglBitmap *bmp,
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int height,
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int depth)
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{
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CoglTextureLoader *loader;
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_COGL_RETURN_VAL_IF_FAIL (bmp, NULL);
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loader = _cogl_texture_create_loader ();
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loader->src_type = COGL_TEXTURE_SOURCE_TYPE_BITMAP;
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loader->src.bitmap.bitmap = cogl_object_ref (bmp);
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loader->src.bitmap.height = height;
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loader->src.bitmap.depth = depth;
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loader->src.bitmap.can_convert_in_place = FALSE; /* TODO add api for this */
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return _cogl_texture_3d_create_base (_cogl_bitmap_get_context (bmp),
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cogl_bitmap_get_width (bmp),
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height,
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depth,
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cogl_bitmap_get_format (bmp),
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loader);
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}
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CoglTexture3D *
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cogl_texture_3d_new_from_data (CoglContext *context,
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int width,
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int height,
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int depth,
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CoglPixelFormat format,
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int rowstride,
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int image_stride,
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const uint8_t *data,
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CoglError **error)
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{
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CoglBitmap *bitmap;
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CoglTexture3D *ret;
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_COGL_RETURN_VAL_IF_FAIL (data, NULL);
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_COGL_RETURN_VAL_IF_FAIL (format != COGL_PIXEL_FORMAT_ANY, NULL);
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/* Rowstride from width if not given */
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if (rowstride == 0)
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rowstride = width * _cogl_pixel_format_get_bytes_per_pixel (format);
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/* Image stride from height and rowstride if not given */
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if (image_stride == 0)
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image_stride = height * rowstride;
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if (image_stride < rowstride * height)
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return NULL;
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/* GL doesn't support uploading when the image_stride isn't a
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multiple of the rowstride. If this happens we'll just pack the
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image into a new bitmap. The documentation for this function
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recommends avoiding this situation. */
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if (image_stride % rowstride != 0)
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{
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uint8_t *bmp_data;
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int bmp_rowstride;
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int z, y;
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bitmap = _cogl_bitmap_new_with_malloc_buffer (context,
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width,
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depth * height,
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format,
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error);
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if (!bitmap)
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return NULL;
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bmp_data = _cogl_bitmap_map (bitmap,
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COGL_BUFFER_ACCESS_WRITE,
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COGL_BUFFER_MAP_HINT_DISCARD,
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error);
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if (bmp_data == NULL)
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{
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cogl_object_unref (bitmap);
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return NULL;
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}
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bmp_rowstride = cogl_bitmap_get_rowstride (bitmap);
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/* Copy all of the images in */
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for (z = 0; z < depth; z++)
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for (y = 0; y < height; y++)
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memcpy (bmp_data + (z * bmp_rowstride * height +
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bmp_rowstride * y),
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data + z * image_stride + rowstride * y,
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bmp_rowstride);
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_cogl_bitmap_unmap (bitmap);
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}
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else
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bitmap = cogl_bitmap_new_for_data (context,
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width,
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image_stride / rowstride * depth,
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format,
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rowstride,
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(uint8_t *) data);
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ret = cogl_texture_3d_new_from_bitmap (bitmap,
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height,
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depth);
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cogl_object_unref (bitmap);
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if (ret &&
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!cogl_texture_allocate (COGL_TEXTURE (ret), error))
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{
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cogl_object_unref (ret);
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return NULL;
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}
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return ret;
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}
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static CoglBool
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_cogl_texture_3d_can_create (CoglContext *ctx,
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int width,
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int height,
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int depth,
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CoglPixelFormat internal_format,
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CoglError **error)
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{
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GLenum gl_intformat;
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GLenum gl_type;
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/* This should only happen on GLES */
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if (!cogl_has_feature (ctx, COGL_FEATURE_ID_TEXTURE_3D))
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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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"3D textures are not supported by the GPU");
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return FALSE;
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}
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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) &&
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(!_cogl_util_is_pot (width) ||
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!_cogl_util_is_pot (height) ||
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!_cogl_util_is_pot (depth)))
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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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"A non-power-of-two size was requested but this is not "
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"supported by the GPU");
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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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NULL,
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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_3d (ctx,
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GL_TEXTURE_3D,
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gl_intformat,
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gl_type,
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width,
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height,
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depth))
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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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"The requested dimensions are not supported by the GPU");
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return FALSE;
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}
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return TRUE;
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}
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static CoglBool
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allocate_with_size (CoglTexture3D *tex_3d,
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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_3d);
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CoglContext *ctx = tex->context;
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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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int depth = loader->src.sized.depth;
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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_3d_can_create (ctx,
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width,
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height,
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depth,
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internal_format,
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error))
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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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gl_texture =
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ctx->texture_driver->gen (ctx, GL_TEXTURE_3D, internal_format);
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_cogl_bind_gl_texture_transient (GL_TEXTURE_3D,
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gl_texture,
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FALSE);
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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_TEXTURE_3D, 0, gl_intformat,
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width, height, depth,
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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_3d->gl_texture = gl_texture;
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tex_3d->gl_format = gl_intformat;
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tex_3d->depth = depth;
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tex_3d->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 (CoglTexture3D *tex_3d,
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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_3d);
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CoglContext *ctx = tex->context;
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CoglPixelFormat internal_format;
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CoglBitmap *bmp = loader->src.bitmap.bitmap;
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int bmp_width = cogl_bitmap_get_width (bmp);
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int height = loader->src.bitmap.height;
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int depth = loader->src.bitmap.depth;
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CoglPixelFormat bmp_format = cogl_bitmap_get_format (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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CoglPixelFormat upload_format;
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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 = _cogl_texture_determine_internal_format (tex, bmp_format);
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if (!_cogl_texture_3d_can_create (ctx,
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bmp_width, height, depth,
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internal_format,
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error))
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return FALSE;
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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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upload_format = cogl_bitmap_get_format (upload_bmp);
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ctx->driver_vtable->pixel_format_to_gl (ctx,
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upload_format,
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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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tex_3d->first_pixel.gl_format = gl_format;
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tex_3d->first_pixel.gl_type = gl_type;
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if (data)
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{
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memcpy (tex_3d->first_pixel.data, data,
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_cogl_pixel_format_get_bytes_per_pixel (upload_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_3d->first_pixel.data, 0,
|
|
_cogl_pixel_format_get_bytes_per_pixel (upload_format));
|
|
}
|
|
}
|
|
|
|
tex_3d->gl_texture =
|
|
ctx->texture_driver->gen (ctx, GL_TEXTURE_3D, internal_format);
|
|
|
|
if (!ctx->texture_driver->upload_to_gl_3d (ctx,
|
|
GL_TEXTURE_3D,
|
|
tex_3d->gl_texture,
|
|
FALSE, /* is_foreign */
|
|
height,
|
|
depth,
|
|
upload_bmp,
|
|
gl_intformat,
|
|
gl_format,
|
|
gl_type,
|
|
error))
|
|
{
|
|
cogl_object_unref (upload_bmp);
|
|
return FALSE;
|
|
}
|
|
|
|
tex_3d->gl_format = gl_intformat;
|
|
|
|
cogl_object_unref (upload_bmp);
|
|
|
|
tex_3d->depth = loader->src.bitmap.depth;
|
|
|
|
tex_3d->internal_format = internal_format;
|
|
|
|
_cogl_texture_set_allocated (tex, internal_format,
|
|
bmp_width, loader->src.bitmap.height);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static CoglBool
|
|
_cogl_texture_3d_allocate (CoglTexture *tex,
|
|
CoglError **error)
|
|
{
|
|
CoglTexture3D *tex_3d = COGL_TEXTURE_3D (tex);
|
|
CoglTextureLoader *loader = tex->loader;
|
|
|
|
_COGL_RETURN_VAL_IF_FAIL (loader, FALSE);
|
|
|
|
switch (loader->src_type)
|
|
{
|
|
case COGL_TEXTURE_SOURCE_TYPE_SIZED:
|
|
return allocate_with_size (tex_3d, loader, error);
|
|
case COGL_TEXTURE_SOURCE_TYPE_BITMAP:
|
|
return allocate_from_bitmap (tex_3d, loader, error);
|
|
default:
|
|
break;
|
|
}
|
|
|
|
g_return_val_if_reached (FALSE);
|
|
}
|
|
|
|
static int
|
|
_cogl_texture_3d_get_max_waste (CoglTexture *tex)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
static CoglBool
|
|
_cogl_texture_3d_is_sliced (CoglTexture *tex)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
static CoglBool
|
|
_cogl_texture_3d_can_hardware_repeat (CoglTexture *tex)
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
_cogl_texture_3d_transform_coords_to_gl (CoglTexture *tex,
|
|
float *s,
|
|
float *t)
|
|
{
|
|
/* The texture coordinates map directly so we don't need to do
|
|
anything */
|
|
}
|
|
|
|
static CoglTransformResult
|
|
_cogl_texture_3d_transform_quad_coords_to_gl (CoglTexture *tex,
|
|
float *coords)
|
|
{
|
|
/* The texture coordinates map directly so we don't need to do
|
|
anything other than check for repeats */
|
|
|
|
CoglBool need_repeat = FALSE;
|
|
int i;
|
|
|
|
for (i = 0; i < 4; i++)
|
|
if (coords[i] < 0.0f || coords[i] > 1.0f)
|
|
need_repeat = TRUE;
|
|
|
|
return (need_repeat ? COGL_TRANSFORM_HARDWARE_REPEAT
|
|
: COGL_TRANSFORM_NO_REPEAT);
|
|
}
|
|
|
|
static CoglBool
|
|
_cogl_texture_3d_get_gl_texture (CoglTexture *tex,
|
|
GLuint *out_gl_handle,
|
|
GLenum *out_gl_target)
|
|
{
|
|
CoglTexture3D *tex_3d = COGL_TEXTURE_3D (tex);
|
|
|
|
if (out_gl_handle)
|
|
*out_gl_handle = tex_3d->gl_texture;
|
|
|
|
if (out_gl_target)
|
|
*out_gl_target = GL_TEXTURE_3D;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
_cogl_texture_3d_gl_flush_legacy_texobj_filters (CoglTexture *tex,
|
|
GLenum min_filter,
|
|
GLenum mag_filter)
|
|
{
|
|
CoglTexture3D *tex_3d = COGL_TEXTURE_3D (tex);
|
|
CoglContext *ctx = tex->context;
|
|
|
|
if (min_filter == tex_3d->gl_legacy_texobj_min_filter
|
|
&& mag_filter == tex_3d->gl_legacy_texobj_mag_filter)
|
|
return;
|
|
|
|
/* Store new values */
|
|
tex_3d->gl_legacy_texobj_min_filter = min_filter;
|
|
tex_3d->gl_legacy_texobj_mag_filter = mag_filter;
|
|
|
|
/* Apply new filters to the texture */
|
|
_cogl_bind_gl_texture_transient (GL_TEXTURE_3D,
|
|
tex_3d->gl_texture,
|
|
FALSE);
|
|
GE( ctx, glTexParameteri (GL_TEXTURE_3D, GL_TEXTURE_MAG_FILTER, mag_filter) );
|
|
GE( ctx, glTexParameteri (GL_TEXTURE_3D, GL_TEXTURE_MIN_FILTER, min_filter) );
|
|
}
|
|
|
|
static void
|
|
_cogl_texture_3d_pre_paint (CoglTexture *tex, CoglTexturePrePaintFlags flags)
|
|
{
|
|
CoglTexture3D *tex_3d = COGL_TEXTURE_3D (tex);
|
|
CoglContext *ctx = tex->context;
|
|
|
|
/* Only update if the mipmaps are dirty */
|
|
if ((flags & COGL_TEXTURE_NEEDS_MIPMAP) &&
|
|
tex_3d->auto_mipmap && tex_3d->mipmaps_dirty)
|
|
{
|
|
/* 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 (tex);
|
|
#if defined (HAVE_COGL_GL) || defined (HAVE_COGL_GLES)
|
|
else if (_cogl_has_private_feature (ctx, COGL_PRIVATE_FEATURE_GL_FIXED))
|
|
{
|
|
_cogl_bind_gl_texture_transient (GL_TEXTURE_3D,
|
|
tex_3d->gl_texture,
|
|
FALSE);
|
|
|
|
GE( ctx, glTexParameteri (GL_TEXTURE_3D,
|
|
GL_GENERATE_MIPMAP,
|
|
GL_TRUE) );
|
|
GE( ctx, glTexSubImage3D (GL_TEXTURE_3D,
|
|
0, /* level */
|
|
0, /* xoffset */
|
|
0, /* yoffset */
|
|
0, /* zoffset */
|
|
1, /* width */
|
|
1, /* height */
|
|
1, /* depth */
|
|
tex_3d->first_pixel.gl_format,
|
|
tex_3d->first_pixel.gl_type,
|
|
tex_3d->first_pixel.data) );
|
|
GE( ctx, glTexParameteri (GL_TEXTURE_3D,
|
|
GL_GENERATE_MIPMAP,
|
|
GL_FALSE) );
|
|
}
|
|
#endif
|
|
|
|
tex_3d->mipmaps_dirty = FALSE;
|
|
}
|
|
}
|
|
|
|
static void
|
|
_cogl_texture_3d_ensure_non_quad_rendering (CoglTexture *tex)
|
|
{
|
|
/* Nothing needs to be done */
|
|
}
|
|
|
|
static CoglBool
|
|
_cogl_texture_3d_set_region (CoglTexture *tex,
|
|
int src_x,
|
|
int src_y,
|
|
int dst_x,
|
|
int dst_y,
|
|
int dst_width,
|
|
int dst_height,
|
|
int level,
|
|
CoglBitmap *bmp,
|
|
CoglError **error)
|
|
{
|
|
/* This function doesn't really make sense for 3D textures because
|
|
it can't specify which image to upload to */
|
|
_cogl_set_error (error,
|
|
COGL_SYSTEM_ERROR,
|
|
COGL_SYSTEM_ERROR_UNSUPPORTED,
|
|
"Setting a 2D region on a 3D texture isn't "
|
|
"currently supported");
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static int
|
|
_cogl_texture_3d_get_data (CoglTexture *tex,
|
|
CoglPixelFormat format,
|
|
int rowstride,
|
|
uint8_t *data)
|
|
{
|
|
/* FIXME: we could probably implement this by assuming the data is
|
|
big enough to hold all of the images and that there is no stride
|
|
between the images. However it would be better to have an API
|
|
that can provide an image stride and this function probably isn't
|
|
particularly useful anyway so for now it just reports failure */
|
|
return 0;
|
|
}
|
|
|
|
static CoglPixelFormat
|
|
_cogl_texture_3d_get_format (CoglTexture *tex)
|
|
{
|
|
return COGL_TEXTURE_3D (tex)->internal_format;
|
|
}
|
|
|
|
static GLenum
|
|
_cogl_texture_3d_get_gl_format (CoglTexture *tex)
|
|
{
|
|
return COGL_TEXTURE_3D (tex)->gl_format;
|
|
}
|
|
|
|
static CoglTextureType
|
|
_cogl_texture_3d_get_type (CoglTexture *tex)
|
|
{
|
|
return COGL_TEXTURE_TYPE_3D;
|
|
}
|
|
|
|
static const CoglTextureVtable
|
|
cogl_texture_3d_vtable =
|
|
{
|
|
TRUE, /* primitive */
|
|
_cogl_texture_3d_allocate,
|
|
_cogl_texture_3d_set_region,
|
|
_cogl_texture_3d_get_data,
|
|
NULL, /* foreach_sub_texture_in_region */
|
|
_cogl_texture_3d_get_max_waste,
|
|
_cogl_texture_3d_is_sliced,
|
|
_cogl_texture_3d_can_hardware_repeat,
|
|
_cogl_texture_3d_transform_coords_to_gl,
|
|
_cogl_texture_3d_transform_quad_coords_to_gl,
|
|
_cogl_texture_3d_get_gl_texture,
|
|
_cogl_texture_3d_gl_flush_legacy_texobj_filters,
|
|
_cogl_texture_3d_pre_paint,
|
|
_cogl_texture_3d_ensure_non_quad_rendering,
|
|
_cogl_texture_3d_gl_flush_legacy_texobj_wrap_modes,
|
|
_cogl_texture_3d_get_format,
|
|
_cogl_texture_3d_get_gl_format,
|
|
_cogl_texture_3d_get_type,
|
|
NULL, /* is_foreign */
|
|
_cogl_texture_3d_set_auto_mipmap
|
|
};
|