src/mesa/swrast/s_depth.h

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  6.5.1
   4  *
   5  * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26 #ifndef S_DEPTH_H
  27 #define S_DEPTH_H
  28
  29
  30 #include "s_context.h"
  31
  32
  33 extern GLuint
  34 _swrast_depth_test_span( GLcontext *ctx, SWspan *span);
  35
  36 extern void
  37 _swrast_depth_clamp_span( GLcontext *ctx, SWspan *span );
  38
  39 extern GLboolean
  40 _swrast_depth_bounds_test( GLcontext *ctx, SWspan *span );
  41
  42
  43 extern void
  44 _swrast_read_depth_span_float( GLcontext *ctx, struct gl_renderbuffer *rb,
  45                                GLint n, GLint x, GLint y, GLfloat depth[] );
  46
  47
  48 extern void
  49 _swrast_read_depth_span_uint( GLcontext *ctx, struct gl_renderbuffer *rb,
  50                               GLint n, GLint x, GLint y, GLuint depth[] );
  51
  52
  53 extern void
  54 _swrast_clear_depth_buffer( GLcontext *ctx, struct gl_renderbuffer *rb );
  55
  56
  57 #endif