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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.
*
**************************************************************************/
#include "lp_context.h"
#include "lp_state.h"
#include "pipe/p_shader_tokens.h"
static void
lp_push_quad_first( struct llvmpipe_context *lp,
struct quad_stage *quad )
{
quad->next = lp->quad.first;
lp->quad.first = quad;
}
static void
lp_build_depth_stencil( struct llvmpipe_context *lp )
{
if (lp->depth_stencil->stencil[0].enabled ||
lp->depth_stencil->stencil[1].enabled) {
lp_push_quad_first( lp, lp->quad.stencil_test );
}
else if (lp->depth_stencil->depth.enabled &&
lp->framebuffer.zsbuf) {
lp_push_quad_first( lp, lp->quad.depth_test );
}
}
void
lp_build_quad_pipeline(struct llvmpipe_context *lp)
{
boolean early_depth_test =
lp->depth_stencil->depth.enabled &&
lp->framebuffer.zsbuf &&
!lp->depth_stencil->alpha.enabled &&
!lp->fs->info.uses_kill &&
!lp->fs->info.writes_z;
/* build up the pipeline in reverse order... */
/* Color combine
*/
lp->quad.first = lp->quad.blend;
/* Shade/Depth/Stencil/Alpha
*/
if ((lp->rasterizer->poly_smooth && lp->reduced_prim == PIPE_PRIM_TRIANGLES) ||
(lp->rasterizer->line_smooth && lp->reduced_prim == PIPE_PRIM_LINES) ||
(lp->rasterizer->point_smooth && lp->reduced_prim == PIPE_PRIM_POINTS)) {
lp_push_quad_first( lp, lp->quad.coverage );
}
if (lp->active_query_count) {
lp_push_quad_first( lp, lp->quad.occlusion );
}
if (!early_depth_test) {
lp_build_depth_stencil( lp );
}
if (lp->depth_stencil->alpha.enabled) {
lp_push_quad_first( lp, lp->quad.alpha_test );
}
lp_push_quad_first( lp, lp->quad.shade );
if (early_depth_test) {
lp_build_depth_stencil( lp );
lp_push_quad_first( lp, lp->quad.earlyz );
}
}
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