src/mesa/main/stencil.h

   1 /* $Id: stencil.h,v 1.4 1999/12/13 04:08:27 joukj Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.3
   6  *
   7  * Copyright (C) 1999  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 STENCIL_H
  29 #define STENCIL_H
  30
  31
  32 #include "types.h"
  33
  34
  35 extern void
  36 _mesa_ClearStencil( GLint s );
  37
  38
  39 extern void
  40 _mesa_StencilFunc( GLenum func, GLint ref, GLuint mask );
  41
  42
  43 extern void
  44 _mesa_StencilMask( GLuint mask );
  45
  46
  47 extern void
  48 _mesa_StencilOp( GLenum fail, GLenum zfail, GLenum zpass );
  49
  50
  51
  52 extern GLboolean
  53 gl_stencil_and_depth_test_span( GLcontext *ctx, GLuint n, GLint x, GLint y,
  54                                 const GLdepth z[], GLubyte mask[] );
  55
  56 #ifdef VMS /* VMS allows externals of 31 characters maximum */
  57 #define gl_stencil_and_depth_test_pixels gl_stencil_and_depth_test_pixel
  58 #endif
  59 extern GLboolean
  60 gl_stencil_and_depth_test_pixels( GLcontext *ctx, GLuint n,
  61                                   const GLint x[], const GLint y[],
  62                                   const GLdepth z[], GLubyte mask[] );
  63
  64
  65
  66 extern void
  67 gl_read_stencil_span( GLcontext *ctx, GLint n, GLint x, GLint y,
  68                       GLstencil stencil[] );
  69
  70
  71 extern void
  72 gl_write_stencil_span( GLcontext *ctx, GLint n, GLint x, GLint y,
  73                        const GLstencil stencil[] );
  74
  75
  76 extern void gl_alloc_stencil_buffer( GLcontext *ctx );
  77
  78
  79 extern void gl_clear_stencil_buffer( GLcontext *ctx );
  80
  81
  82 #endif