1 /* $Id: s_fog.h,v 1.5 2001/06/18 23:55:18 brianp Exp $ */
4 * Mesa 3-D graphics library
7 * Copyright (C) 1999-2001 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
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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
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37 _mesa_z_to_fogfactor(GLcontext
*ctx
, GLfloat z
);
41 _mesa_fog_rgba_pixels( const GLcontext
*ctx
,
42 GLuint n
, const GLfloat fog
[],
46 _mesa_fog_ci_pixels( const GLcontext
*ctx
,
47 GLuint n
, const GLfloat fog
[], GLuint indx
[] );
50 _mesa_win_fog_coords_from_z( const GLcontext
*ctx
,
56 _mesa_depth_fog_rgba_pixels( const GLcontext
*ctx
,
57 GLuint n
, const GLdepth z
[], GLchan rgba
[][4] );
60 _mesa_depth_fog_ci_pixels( const GLcontext
*ctx
,
61 GLuint n
, const GLdepth z
[], GLuint index
[] );