1 /**************************************************************************
2 *
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
16 * of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25 *
26 **************************************************************************/
27
28
29 #include "main/imports.h"
30 #include "main/readpix.h"
31
32 #include "st_atom.h"
33 #include "st_context.h"
34 #include "st_cb_bitmap.h"
35 #include "st_cb_readpixels.h"
36
37
38 /**
39 * The only special thing we need to do for the state tracker's
40 * glReadPixels is to validate state (to be sure we have up-to-date
41 * framebuffer surfaces) and flush the bitmap cache prior to reading.
42 */
43 static void
st_readpixels(struct gl_context * ctx,GLint x,GLint y,GLsizei width,GLsizei height,GLenum format,GLenum type,const struct gl_pixelstore_attrib * pack,GLvoid * dest)44 st_readpixels(struct gl_context *ctx, GLint x, GLint y,
45 GLsizei width, GLsizei height,
46 GLenum format, GLenum type,
47 const struct gl_pixelstore_attrib *pack,
48 GLvoid *dest)
49 {
50 struct st_context *st = st_context(ctx);
51
52 st_validate_state(st);
53 st_flush_bitmap_cache(st);
54 _mesa_readpixels(ctx, x, y, width, height, format, type, pack, dest);
55 }
56
57
st_init_readpixels_functions(struct dd_function_table * functions)58 void st_init_readpixels_functions(struct dd_function_table *functions)
59 {
60 functions->ReadPixels = st_readpixels;
61 }
62