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      1 /**************************************************************************
      2  *
      3  * Copyright 2007 VMware, Inc.
      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 VMWARE 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 <keithw (at) vmware.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