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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.
*
**************************************************************************/
/* Authors: Keith Whitwell <keith@tungstengraphics.com>
*/
#include "pipe/p_util.h"
#include "pipe/p_defines.h"
#include "draw_private.h"
/**
* Rebuild the rendering pipeline.
*/
static void validate_begin( struct draw_stage *stage )
{
struct draw_context *draw = stage->draw;
struct draw_stage *next = draw->pipeline.rasterize;
/*
* NOTE: we build up the pipeline in end-to-start order.
*
* TODO: make the current primitive part of the state and build
* shorter pipelines for lines & points.
*/
if (draw->rasterizer->line_width != 1.0 ||
draw->rasterizer->point_size != 1.0 ||
draw->rasterizer->point_sprite) {
draw->pipeline.wide->next = next;
next = draw->pipeline.wide;
}
if (draw->rasterizer->fill_cw != PIPE_POLYGON_MODE_FILL ||
draw->rasterizer->fill_ccw != PIPE_POLYGON_MODE_FILL) {
draw->pipeline.unfilled->next = next;
next = draw->pipeline.unfilled;
}
if (draw->rasterizer->offset_cw ||
draw->rasterizer->offset_ccw) {
draw->pipeline.offset->next = next;
next = draw->pipeline.offset;
}
if (draw->rasterizer->light_twoside) {
draw->pipeline.twoside->next = next;
next = draw->pipeline.twoside;
}
/* Always run the cull stage as we calculate determinant there
* also. Fix this..
*/
{
draw->pipeline.cull->next = next;
next = draw->pipeline.cull;
}
/* Clip stage
*/
if (!draw->rasterizer->bypass_clipping)
{
draw->pipeline.clip->next = next;
next = draw->pipeline.clip;
}
/* Do software flatshading prior to clipping. XXX: should only do
* this for clipped primitives, ie it is a part of the clip
* routine.
*/
if (draw->rasterizer->flatshade) {
draw->pipeline.flatshade->next = next;
next = draw->pipeline.flatshade;
}
if (draw->feedback.enabled || draw->feedback.discard) {
draw->pipeline.feedback->next = next;
next = draw->pipeline.feedback;
}
draw->pipeline.first = next;
draw->pipeline.first->begin( draw->pipeline.first );
}
/**
* Create validate pipeline stage.
*/
struct draw_stage *draw_validate_stage( struct draw_context *draw )
{
struct draw_stage *stage = CALLOC_STRUCT(draw_stage);
stage->draw = draw;
stage->next = NULL;
stage->begin = validate_begin;
stage->point = NULL;
stage->line = NULL;
stage->tri = NULL;
stage->end = NULL;
stage->reset_stipple_counter = NULL;
return stage;
}
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