1 /* $Id: s_alphabuf.h,v 1.4 2002/03/16 00:53:15 brianp Exp $ */
4 * Mesa 3-D graphics library
7 * Copyright (C) 1999-2002 Brian Paul All Rights Reserved.
9 * Permission is hereby granted, free of charge, to any person obtaining a
10 * copy of this software and associated documentation files (the "Software"),
11 * to deal in the Software without restriction, including without limitation
12 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
13 * and/or sell copies of the Software, and to permit persons to whom the
14 * Software is furnished to do so, subject to the following conditions:
16 * The above copyright notice and this permission notice shall be included
17 * in all copies or substantial portions of the Software.
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
23 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
24 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
37 _mesa_alloc_alpha_buffers( GLframebuffer
*buffer
);
41 _mesa_clear_alpha_buffers( GLcontext
*ctx
);
45 _mesa_write_alpha_span( GLcontext
*ctx
, GLuint n
, GLint x
, GLint y
,
46 CONST GLchan rgba
[][4], const GLubyte mask
[] );
50 _mesa_write_mono_alpha_span( GLcontext
*ctx
,
51 GLuint n
, GLint x
, GLint y
,
52 GLchan alpha
, const GLubyte mask
[] );
57 _mesa_write_alpha_pixels( GLcontext
* ctx
,
58 GLuint n
, const GLint x
[], const GLint y
[],
59 CONST GLchan rgba
[][4],
60 const GLubyte mask
[] );
64 _mesa_write_mono_alpha_pixels( GLcontext
* ctx
,
65 GLuint n
, const GLint x
[],
66 const GLint y
[], GLchan alpha
,
67 const GLubyte mask
[] );
71 _mesa_read_alpha_span( GLcontext
* ctx
,
72 GLuint n
, GLint x
, GLint y
, GLchan rgba
[][4] );
76 _mesa_read_alpha_pixels( GLcontext
* ctx
,
77 GLuint n
, const GLint x
[], const GLint y
[],
78 GLchan rgba
[][4], const GLubyte mask
[] );