src/mesa/swrast/s_stencil.h

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  6.3
   4  *
   5  * Copyright (C) 1999-2005  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  21  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  22  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  23  * OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26
  27 #ifndef S_STENCIL_H
  28 #define S_STENCIL_H
  29
  30
  31 #include "main/mtypes.h"
  32 #include "s_span.h"
  33
  34
  35
  36 extern GLboolean
  37 _swrast_stencil_and_ztest_span(struct gl_context *ctx, SWspan *span);
  38
  39
  40 extern void
  41 _swrast_read_stencil_span(struct gl_context *ctx, struct gl_renderbuffer *rb,
  42                           GLint n, GLint x, GLint y, GLubyte stencil[]);
  43
  44
  45 extern void
  46 _swrast_write_stencil_span( struct gl_context *ctx, GLint n, GLint x, GLint y,
  47                           const GLubyte stencil[] );
  48
  49
  50 extern void
  51 _swrast_clear_stencil_buffer(struct gl_context *ctx);
  52
  53
  54 #endif