text: /*
   * Mesa 3-D graphics library
   * Version:  6.5.1
   *
   * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included
   * in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
   * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
   * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
   * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   */
  
  
  #ifndef S_DEPTH_H
  #define S_DEPTH_H
  
  
  #include "mtypes.h"
  #include "s_context.h"
  
  
  extern GLuint
  _swrast_depth_test_span( GLcontext *ctx, SWspan *span);
  
  
  extern GLboolean
  _swrast_depth_bounds_test( GLcontext *ctx, SWspan *span );
  
  
  extern void
  _swrast_read_depth_span_float( GLcontext *ctx, struct gl_renderbuffer *rb,
                                 GLint n, GLint x, GLint y, GLfloat depth[] );
  
  
  extern void
  _swrast_read_depth_span_uint( GLcontext *ctx, struct gl_renderbuffer *rb,
                                GLint n, GLint x, GLint y, GLuint depth[] );
  
  
  extern void
  _swrast_clear_depth_buffer( GLcontext *ctx, struct gl_renderbuffer *rb );
  
  
  #endif
  