src/mesa/main/depth.h

   1 /* $Id: depth.h,v 1.8 2000/04/11 20:42:22 brianp Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.3
   6  *
   7  * Copyright (C) 1999-2000  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 DEPTH_H
  29 #define DEPTH_H
  30
  31
  32 #include "types.h"
  33
  34
  35 /*
  36  * Immediate-mode API entrpoints
  37  */
  38
  39 extern void
  40 _mesa_ClearDepth( GLclampd depth );
  41
  42
  43 extern void
  44 _mesa_DepthFunc( GLenum func );
  45
  46
  47 extern void
  48 _mesa_DepthMask( GLboolean flag );
  49
  50
  51
  52 /*
  53  * Internal functions
  54  */
  55
  56 extern GLvoid *
  57 _mesa_zbuffer_address(GLcontext *ctx, GLint x, GLint y);
  58
  59
  60 extern GLuint
  61 _mesa_depth_test_span( GLcontext *ctx, GLuint n, GLint x, GLint y,
  62                        const GLdepth z[], GLubyte mask[] );
  63
  64 extern void
  65 _mesa_depth_test_pixels( GLcontext *ctx,
  66                          GLuint n, const GLint x[], const GLint y[],
  67                          const GLdepth z[], GLubyte mask[] );
  68
  69
  70 extern void
  71 _mesa_read_depth_span( GLcontext *ctx,
  72                        GLint n, GLint x, GLint y, GLdepth depth[] );
  73
  74
  75 extern void
  76 _mesa_read_depth_span_float( GLcontext *ctx, GLint n, GLint x, GLint y,
  77                              GLfloat depth[] );
  78
  79
  80 extern void
  81 _mesa_alloc_depth_buffer( GLcontext* ctx );
  82
  83
  84 extern void
  85 _mesa_clear_depth_buffer( GLcontext* ctx );
  86
  87
  88
  89 #endif