src/mesa/swrast/s_span.h

   1 /* $Id: s_span.h,v 1.17 2002/06/15 02:38:17 brianp Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  4.1
   6  *
   7  * Copyright (C) 1999-2002  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_SPAN_H
  29 #define S_SPAN_H
  30
  31
  32 #include "mtypes.h"
  33 #include "swrast.h"
  34
  35
  36 extern void
  37 _mesa_span_default_z( GLcontext *ctx, struct sw_span *span );
  38
  39 extern void
  40 _mesa_span_interpolate_z( const GLcontext *ctx, struct sw_span *span );
  41
  42 extern void
  43 _mesa_span_default_fog( GLcontext *ctx, struct sw_span *span );
  44
  45 extern void
  46 _mesa_span_default_color( GLcontext *ctx, struct sw_span *span );
  47
  48 extern void
  49 _mesa_span_default_texcoords( GLcontext *ctx, struct sw_span *span );
  50
  51 extern void
  52 _mesa_write_index_span( GLcontext *ctx, struct sw_span *span);
  53
  54
  55 extern void
  56 _mesa_write_rgba_span( GLcontext *ctx, struct sw_span *span);
  57
  58
  59 extern void
  60 _mesa_write_texture_span( GLcontext *ctx, struct sw_span *span);
  61
  62
  63 extern void
  64 _mesa_read_rgba_span( GLcontext *ctx, GLframebuffer *buffer,
  65                       GLuint n, GLint x, GLint y, GLchan rgba[][4] );
  66
  67 extern void
  68 _mesa_read_index_span( GLcontext *ctx, GLframebuffer *buffer,
  69                        GLuint n, GLint x, GLint y, GLuint indx[] );
  70
  71 #endif