src/mesa/swrast/s_alphabuf.h

   1
   2 /*
   3  * Mesa 3-D graphics library
   4  * Version:  4.0.2
   5  *
   6  * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included
  16  * in all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  22  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  23  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26
  27 #ifndef S_ALPHABUF_H
  28 #define S_ALPHABUF_H
  29
  30
  31 #include "mtypes.h"
  32 #include "swrast.h"
  33
  34
  35 extern void
  36 _swrast_alloc_alpha_buffers( GLframebuffer *buffer );
  37
  38
  39 extern void
  40 _swrast_clear_alpha_buffers( GLcontext *ctx );
  41
  42
  43 extern void
  44 _swrast_write_alpha_span( GLcontext *ctx, GLuint n, GLint x, GLint y,
  45                         CONST GLchan rgba[][4], const GLubyte mask[] );
  46
  47
  48 extern void
  49 _swrast_write_mono_alpha_span( GLcontext *ctx,
  50                              GLuint n, GLint x, GLint y,
  51                              GLchan alpha, const GLubyte mask[] );
  52
  53
  54
  55 extern void
  56 _swrast_write_alpha_pixels( GLcontext* ctx,
  57                           GLuint n, const GLint x[], const GLint y[],
  58                           CONST GLchan rgba[][4],
  59                           const GLubyte mask[] );
  60
  61
  62 extern void
  63 _swrast_write_mono_alpha_pixels( GLcontext* ctx,
  64                                GLuint n, const GLint x[],
  65                                const GLint y[], GLchan alpha,
  66                                const GLubyte mask[] );
  67
  68
  69 extern void
  70 _swrast_read_alpha_span( GLcontext* ctx,
  71                        GLuint n, GLint x, GLint y, GLchan rgba[][4] );
  72
  73
  74 extern void
  75 _swrast_read_alpha_pixels( GLcontext* ctx,
  76                          GLuint n, const GLint x[], const GLint y[],
  77                          GLchan rgba[][4], const GLubyte mask[] );
  78
  79
  80 #endif