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  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:
  13.  *
  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
  22.  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23.  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24.  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25.  *
  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 */
  73.