src/mesa/swrast/s_stencil.h

   1 /* $Id: s_stencil.h,v 1.4 2001/12/17 04:54:35 brianp Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.5
   6  *
   7  * Copyright (C) 1999-2001  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_STENCIL_H
  29 #define S_STENCIL_H
  30
  31
  32 #include "mtypes.h"
  33 #include "swrast.h"
  34
  35
  36 extern GLboolean
  37 _old_stencil_and_ztest_span( GLcontext *ctx, GLuint n, GLint x, GLint y,
  38                               const GLdepth z[], GLubyte mask[] );
  39 extern GLboolean
  40 _mesa_stencil_and_ztest_span(GLcontext *ctx, struct sw_span *span);
  41
  42
  43 extern GLboolean
  44 _mesa_stencil_and_ztest_pixels( GLcontext *ctx, GLuint n,
  45                                 const GLint x[], const GLint y[],
  46                                 const GLdepth z[], GLubyte mask[] );
  47
  48
  49 extern void
  50 _mesa_read_stencil_span( GLcontext *ctx, GLint n, GLint x, GLint y,
  51                          GLstencil stencil[] );
  52
  53
  54 extern void
  55 _mesa_write_stencil_span( GLcontext *ctx, GLint n, GLint x, GLint y,
  56                           const GLstencil stencil[] );
  57
  58
  59 extern void
  60 _mesa_alloc_stencil_buffer( GLcontext *ctx );
  61
  62
  63 extern void
  64 _mesa_clear_stencil_buffer( GLcontext *ctx );
  65
  66
  67 #endif