dll/opengl/mesa/depth.h

   1 /* $Id: depth.h,v 1.2 1996/09/15 14:19:16 brianp Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  2.0
   6  * Copyright (C) 1995-1996  Brian Paul
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Library General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Library General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Library General Public
  19  * License along with this library; if not, write to the Free
  20  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  */
  22
  23
  24 /*
  25  * $Log: depth.h,v $
  26  * Revision 1.2  1996/09/15 14:19:16  brianp
  27  * now use GLframebuffer and GLvisual
  28  *
  29  * Revision 1.1  1996/09/13 01:38:16  brianp
  30  * Initial revision
  31  *
  32  */
  33
  34
  35 #ifndef DEPTH_H
  36 #define DEPTH_H
  37
  38
  39 #include "types.h"
  40
  41
  42 /*
  43  * Return the address of the Z-buffer value for window coordinate (x,y):
  44  */
  45 #define Z_ADDRESS( CTX, X, Y )  \
  46             ((CTX)->Buffer->Depth + (CTX)->Buffer->Width * (Y) + (X))
  47
  48
  49
  50
  51 extern GLuint
  52 gl_depth_test_span_generic( GLcontext* ctx, GLuint n, GLint x, GLint y,
  53                             const GLdepth z[], GLubyte mask[] );
  54
  55 extern GLuint
  56 gl_depth_test_span_less( GLcontext* ctx, GLuint n, GLint x, GLint y,
  57                          const GLdepth z[], GLubyte mask[] );
  58
  59 extern GLuint
  60 gl_depth_test_span_greater( GLcontext* ctx, GLuint n, GLint x, GLint y,
  61                             const GLdepth z[], GLubyte mask[] );
  62
  63
  64
  65 extern void
  66 gl_depth_test_pixels_generic( GLcontext* ctx,
  67                               GLuint n, const GLint x[], const GLint y[],
  68                               const GLdepth z[], GLubyte mask[] );
  69
  70 extern void
  71 gl_depth_test_pixels_less( GLcontext* ctx,
  72                            GLuint n, const GLint x[], const GLint y[],
  73                            const GLdepth z[], GLubyte mask[] );
  74
  75 extern void
  76 gl_depth_test_pixels_greater( GLcontext* ctx,
  77                               GLuint n, const GLint x[], const GLint y[],
  78                               const GLdepth z[], GLubyte mask[] );
  79
  80
  81 extern void gl_read_depth_span_float( GLcontext* ctx,
  82                                       GLuint n, GLint x, GLint y,
  83                                       GLfloat depth[] );
  84
  85
  86 extern void gl_read_depth_span_int( GLcontext* ctx, GLuint n, GLint x, GLint y,
  87                                     GLdepth depth[] );
  88
  89
  90 extern void gl_alloc_depth_buffer( GLcontext* ctx );
  91
  92
  93 extern void gl_clear_depth_buffer( GLcontext* ctx );
  94
  95
  96 extern void gl_ClearDepth( GLcontext* ctx, GLclampd depth );
  97 extern void gl_DepthFunc( GLcontext* ctx, GLenum func );
  98 extern void gl_DepthMask( GLcontext* ctx, GLboolean flag );
  99 extern void gl_DepthRange( GLcontext* ctx, GLclampd nearval, GLclampd farval );
 100
 101 #endif