82 lines
2.4 KiB
C
82 lines
2.4 KiB
C
/**************************************************************************
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*
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* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/**
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* \brief Quad occlusion counter stage
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* \author Brian Paul
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*/
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#include "pipe/p_defines.h"
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#include "pipe/p_util.h"
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#include "sp_context.h"
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#include "sp_headers.h"
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#include "sp_surface.h"
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#include "sp_quad.h"
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static void
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occlusion_count_quad(struct quad_stage *qs, struct quad_header *quad)
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{
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struct softpipe_context *softpipe = qs->softpipe;
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struct pipe_query_object *occ
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= softpipe->queries[PIPE_QUERY_OCCLUSION_COUNTER];
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occ->count += (quad->mask ) & 1;
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occ->count += (quad->mask >> 1) & 1;
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occ->count += (quad->mask >> 2) & 1;
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occ->count += (quad->mask >> 3) & 1;
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qs->next->run(qs->next, quad);
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}
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static void occlusion_begin(struct quad_stage *qs)
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{
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qs->next->begin(qs->next);
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}
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static void occlusion_destroy(struct quad_stage *qs)
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{
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FREE( qs );
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}
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struct quad_stage *sp_quad_occlusion_stage( struct softpipe_context *softpipe )
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{
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struct quad_stage *stage = CALLOC_STRUCT(quad_stage);
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stage->softpipe = softpipe;
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stage->begin = occlusion_begin;
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stage->run = occlusion_count_quad;
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stage->destroy = occlusion_destroy;
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return stage;
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}
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