src/mesa/main/fog.h

   1 /* $Id: fog.h,v 1.7 2000/10/28 18:34:48 brianp Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.5
   6  *
   7  * Copyright (C) 1999-2000  Brian Paul   All Rights Reserved.
   8  *
   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:
  15  *
  16  * The above copyright notice and this permission notice shall be included
  17  * in all copies or substantial portions of the Software.
  18  *
  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.
  25  */
  26
  27
  28 #ifndef FOG_H
  29 #define FOG_H
  30
  31
  32 #include "types.h"
  33
  34
  35
  36 extern void
  37 _mesa_Fogf(GLenum pname, GLfloat param);
  38
  39
  40 extern void
  41 _mesa_Fogi(GLenum pname, GLint param );
  42
  43
  44 extern void
  45 _mesa_Fogfv(GLenum pname, const GLfloat *params );
  46
  47
  48 extern void
  49 _mesa_Fogiv(GLenum pname, const GLint *params );
  50
  51
  52
  53 extern void
  54 _mesa_fog_rgba_pixels( const GLcontext *ctx,
  55                        GLuint n, const GLfixed fog[],
  56                        GLchan rgba[][4] );
  57
  58 extern void
  59 _mesa_fog_ci_pixels( const GLcontext *ctx,
  60                      GLuint n, const GLfixed fog[], GLuint indx[] );
  61
  62
  63 extern void
  64 _mesa_make_win_fog_coords( struct vertex_buffer *VB );
  65
  66
  67 extern void
  68 _mesa_win_fog_coords_from_z( const GLcontext *ctx,
  69                              GLuint n,
  70                              const GLdepth z[],
  71                              GLfixed fogcoord[] );
  72
  73 extern void
  74 _mesa_depth_fog_rgba_pixels( const GLcontext *ctx,
  75                              GLuint n, const GLdepth z[], GLubyte rgba[][4] );
  76
  77 extern void
  78 _mesa_depth_fog_ci_pixels( const GLcontext *ctx,
  79                            GLuint n, const GLdepth z[], GLuint index[] );
  80
  81
  82
  83 extern void
  84 _mesa_init_fog( void );
  85
  86
  87 #endif