• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 /*
2  * Mesa 3-D graphics library
3  *
4  * Copyright (C) 1999-2008  Brian Paul   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 "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:
12  *
13  * The above copyright notice and this permission notice shall be included
14  * in all copies or substantial portions of the Software.
15  *
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.
23  */
24 
25 
26 #ifndef READPIXELS_H
27 #define READPIXELS_H
28 
29 
30 #include "glheader.h"
31 
32 struct gl_context;
33 struct gl_pixelstore_attrib;
34 
35 
36 extern GLboolean
37 _mesa_readpixels_needs_slow_path(const struct gl_context *ctx, GLenum format,
38                                  GLenum type, GLboolean uses_blit);
39 
40 extern GLboolean
41 _mesa_need_rgb_to_luminance_conversion(GLenum srcBaseFormat,
42                                        GLenum dstBaseFormat);
43 
44 extern GLboolean
45 _mesa_need_luminance_to_rgb_conversion(GLenum srcBaseFormat,
46                                        GLenum dstBaseFormat);
47 
48 extern GLbitfield
49 _mesa_get_readpixels_transfer_ops(const struct gl_context *ctx,
50                                   mesa_format texFormat,
51                                   GLenum format, GLenum type,
52                                   GLboolean uses_blit);
53 
54 extern void
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,
59                  GLvoid *pixels);
60 
61 extern void GLAPIENTRY
62 _mesa_ReadPixels( GLint x, GLint y, GLsizei width, GLsizei height,
63                   GLenum format, GLenum type, GLvoid *pixels );
64 
65 extern void GLAPIENTRY
66 _mesa_ReadnPixelsARB( GLint x, GLint y, GLsizei width, GLsizei height,
67 		      GLenum format, GLenum type, GLsizei bufSize,
68                       GLvoid *pixels );
69 
70 #endif
71