71 lines
2.0 KiB
C
71 lines
2.0 KiB
C
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/*
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* Mesa 3-D graphics library
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* Version: 6.5
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*
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* Copyright (C) 1999-2005 Brian Paul 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 "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions 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 MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* quad blending
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*/
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#include "glheader.h"
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#include "imports.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_tile.h"
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static void
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blend_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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GLfloat dest[4][QUAD_SIZE], result[4][QUAD_SIZE];
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GLuint i;
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/* XXX we're also looping in output_quad() !?! */
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for (i = 0; i < softpipe->framebuffer.num_cbufs; i++) {
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struct softpipe_surface *sps
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= softpipe_surface(softpipe->framebuffer.cbufs[i]);
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sps->read_quad_f_swz(sps, quad->x0, quad->y0, dest);
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/* XXX do blend here */
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qs->next->run(qs->next, quad);
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}
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}
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struct quad_stage *sp_quad_blend_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->run = blend_quad;
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return stage;
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}
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