2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
33 struct gl_pixelstore_attrib
;
37 _mesa_readpixels_needs_slow_path(const struct gl_context
*ctx
, GLenum format
,
38 GLenum type
, GLboolean uses_blit
);
41 _mesa_need_rgb_to_luminance_conversion(GLenum srcBaseFormat
,
42 GLenum dstBaseFormat
);
45 _mesa_need_luminance_to_rgb_conversion(GLenum srcBaseFormat
,
46 GLenum dstBaseFormat
);
49 _mesa_get_readpixels_transfer_ops(const struct gl_context
*ctx
,
50 mesa_format texFormat
,
51 GLenum format
, GLenum type
,
55 _mesa_readpixels(struct gl_context
*ctx
,
56 GLint x
, GLint y
, GLsizei width
, GLsizei height
,
57 GLenum format
, GLenum type
,
58 const struct gl_pixelstore_attrib
*packing
,
61 extern void GLAPIENTRY
62 _mesa_ReadPixels( GLint x
, GLint y
, GLsizei width
, GLsizei height
,
63 GLenum format
, GLenum type
, GLvoid
*pixels
);
65 extern void GLAPIENTRY
66 _mesa_ReadnPixelsARB( GLint x
, GLint y
, GLsizei width
, GLsizei height
,
67 GLenum format
, GLenum type
, GLsizei bufSize
,