src/mesa/swrast/s_alphabuf.h

   1 /* $Id: s_alphabuf.h,v 1.4 2002/03/16 00:53:15 brianp Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  4.0.2
   6  *
   7  * Copyright (C) 1999-2002  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 S_ALPHABUF_H
  29 #define S_ALPHABUF_H
  30
  31
  32 #include "mtypes.h"
  33 #include "swrast.h"
  34
  35
  36 extern void
  37 _mesa_alloc_alpha_buffers( GLframebuffer *buffer );
  38
  39
  40 extern void
  41 _mesa_clear_alpha_buffers( GLcontext *ctx );
  42
  43
  44 extern void
  45 _mesa_write_alpha_span( GLcontext *ctx, GLuint n, GLint x, GLint y,
  46                         CONST GLchan rgba[][4], const GLubyte mask[] );
  47
  48
  49 extern void
  50 _mesa_write_mono_alpha_span( GLcontext *ctx,
  51                              GLuint n, GLint x, GLint y,
  52                              GLchan alpha, const GLubyte mask[] );
  53
  54
  55
  56 extern void
  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[] );
  61
  62
  63 extern void
  64 _mesa_write_mono_alpha_pixels( GLcontext* ctx,
  65                                GLuint n, const GLint x[],
  66                                const GLint y[], GLchan alpha,
  67                                const GLubyte mask[] );
  68
  69
  70 extern void
  71 _mesa_read_alpha_span( GLcontext* ctx,
  72                        GLuint n, GLint x, GLint y, GLchan rgba[][4] );
  73
  74
  75 extern void
  76 _mesa_read_alpha_pixels( GLcontext* ctx,
  77                          GLuint n, const GLint x[], const GLint y[],
  78                          GLchan rgba[][4], const GLubyte mask[] );
  79
  80
  81 #endif