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/**************************************************************************
*
* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/**
* \brief quad colormask stage
* \author Brian Paul
*/
#include "pipe/p_defines.h"
#include "util/u_math.h"
#include "util/u_memory.h"
#include "lp_context.h"
#include "lp_quad.h"
#include "lp_surface.h"
#include "lp_quad_pipe.h"
#include "lp_tile_cache.h"
/**
* XXX colormask could be rolled into blending...
*/
static void
colormask_quad(struct quad_stage *qs, struct quad_header *quad)
{
struct llvmpipe_context *llvmpipe = qs->llvmpipe;
uint cbuf;
/* loop over colorbuffer outputs */
for (cbuf = 0; cbuf < llvmpipe->framebuffer.nr_cbufs; cbuf++) {
float dest[4][QUAD_SIZE];
struct llvmpipe_cached_tile *tile
= lp_get_cached_tile(llvmpipe->cbuf_cache[cbuf],
quad->input.x0, quad->input.y0);
float (*quadColor)[4] = quad->output.color[cbuf];
uint i, j;
/* get/swizzle dest colors */
for (j = 0; j < QUAD_SIZE; j++) {
int x = (quad->input.x0 & (TILE_SIZE-1)) + (j & 1);
int y = (quad->input.y0 & (TILE_SIZE-1)) + (j >> 1);
for (i = 0; i < 4; i++) {
dest[i][j] = tile->data.color[y][x][i];
}
}
/* R */
if (!(llvmpipe->blend->colormask & PIPE_MASK_R))
COPY_4V(quadColor[0], dest[0]);
/* G */
if (!(llvmpipe->blend->colormask & PIPE_MASK_G))
COPY_4V(quadColor[1], dest[1]);
/* B */
if (!(llvmpipe->blend->colormask & PIPE_MASK_B))
COPY_4V(quadColor[2], dest[2]);
/* A */
if (!(llvmpipe->blend->colormask & PIPE_MASK_A))
COPY_4V(quadColor[3], dest[3]);
}
}
static void
colormask_quads(struct quad_stage *qs, struct quad_header *quads[],
unsigned nr)
{
unsigned i;
for (i = 0; i < nr; i++)
colormask_quad(qs, quads[i]);
/* pass quad to next stage */
qs->next->run(qs->next, quads, nr);
}
static void colormask_begin(struct quad_stage *qs)
{
qs->next->begin(qs->next);
}
static void colormask_destroy(struct quad_stage *qs)
{
FREE( qs );
}
struct quad_stage *lp_quad_colormask_stage( struct llvmpipe_context *llvmpipe )
{
struct quad_stage *stage = CALLOC_STRUCT(quad_stage);
stage->llvmpipe = llvmpipe;
stage->begin = colormask_begin;
stage->run = colormask_quads;
stage->destroy = colormask_destroy;
return stage;
}
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