src/mesa/swrast/s_depth.h

   1 /* $Id: s_depth.h,v 1.3 2001/03/12 00:48:41 gareth 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_DEPTH_H
  29 #define S_DEPTH_H
  30
  31
  32 #include "mtypes.h"
  33 #include "swrast.h"
  34
  35
  36 extern GLvoid *
  37 _mesa_zbuffer_address(GLcontext *ctx, GLint x, GLint y);
  38
  39
  40 extern GLuint
  41 _mesa_depth_test_span( GLcontext *ctx, GLuint n, GLint x, GLint y,
  42                        const GLdepth z[], GLubyte mask[] );
  43
  44 extern void
  45 _mesa_depth_test_pixels( GLcontext *ctx,
  46                          GLuint n, const GLint x[], const GLint y[],
  47                          const GLdepth z[], GLubyte mask[] );
  48
  49
  50 extern void
  51 _mesa_read_depth_span( GLcontext *ctx,
  52                        GLint n, GLint x, GLint y, GLdepth depth[] );
  53
  54
  55 extern void
  56 _mesa_read_depth_span_float( GLcontext *ctx, GLint n, GLint x, GLint y,
  57                              GLfloat depth[] );
  58
  59
  60 extern void
  61 _mesa_alloc_depth_buffer( GLcontext* ctx );
  62
  63
  64 extern void
  65 _mesa_clear_depth_buffer( GLcontext* ctx );
  66
  67
  68
  69 #endif