src/gallium/drivers/softpipe/sp_quad_pipe.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
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  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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  26  **************************************************************************/
  27
  28 /* Authors:  Keith Whitwell <keith@tungstengraphics.com>
  29  */
  30
  31 #ifndef SP_QUAD_PIPE_H
  32 #define SP_QUAD_PIPE_H
  33
  34
  35 struct softpipe_context;
  36 struct quad_header;
  37
  38
  39 /**
  40  * Fragment processing is performed on 2x2 blocks of pixels called "quads".
  41  * Quad processing is performed with a pipeline of stages represented by
  42  * this type.
  43  */
  44 struct quad_stage {
  45    struct softpipe_context *softpipe;
  46
  47    struct quad_stage *next;
  48
  49    void (*begin)(struct quad_stage *qs);
  50
  51    /** the stage action */
  52    void (*run)(struct quad_stage *qs, struct quad_header *quad[], unsigned nr);
  53
  54    void (*destroy)(struct quad_stage *qs);
  55 };
  56
  57
  58 struct quad_stage *sp_quad_polygon_stipple_stage( struct softpipe_context *softpipe );
  59 struct quad_stage *sp_quad_earlyz_stage( struct softpipe_context *softpipe );
  60 struct quad_stage *sp_quad_shade_stage( struct softpipe_context *softpipe );
  61 struct quad_stage *sp_quad_alpha_test_stage( struct softpipe_context *softpipe );
  62 struct quad_stage *sp_quad_stencil_test_stage( struct softpipe_context *softpipe );
  63 struct quad_stage *sp_quad_depth_test_stage( struct softpipe_context *softpipe );
  64 struct quad_stage *sp_quad_occlusion_stage( struct softpipe_context *softpipe );
  65 struct quad_stage *sp_quad_coverage_stage( struct softpipe_context *softpipe );
  66 struct quad_stage *sp_quad_blend_stage( struct softpipe_context *softpipe );
  67 struct quad_stage *sp_quad_colormask_stage( struct softpipe_context *softpipe );
  68 struct quad_stage *sp_quad_output_stage( struct softpipe_context *softpipe );
  69
  70 void sp_build_quad_pipeline(struct softpipe_context *sp);
  71
  72 #endif /* SP_QUAD_PIPE_H */