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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 Primitive rasterization/rendering (points, lines)
*
* \author Keith Whitwell <keith@tungstengraphics.com>
* \author Brian Paul
*/
#include "lp_context.h"
#include "lp_quad.h"
#include "lp_setup.h"
#include "lp_state.h"
#include "draw/draw_context.h"
#include "draw/draw_private.h"
#include "draw/draw_vertex.h"
#include "pipe/p_shader_tokens.h"
#include "pipe/p_thread.h"
#include "util/u_math.h"
#include "util/u_memory.h"
#define DEBUG_VERTS 0
void
llvmpipe_setup_flush()
{
}
void
llvmpipe_setup_bind_framebuffer()
{
}
void
llvmpipe_setup_clear()
{
}
/* Stubs for lines & points for now:
*/
void
llvmpipe_setup_point(struct setup_context *setup,
const float (*v0)[4])
{
}
void
llvmpipe_setup_line(struct setup_context *setup,
const float (*v0)[4],
const float (*v1)[4])
{
}
/* Called after statechange, before emitting primitives. If binning
* is active, this function should store relevant state in the binning
* context.
*
* That includes:
* - current fragment shader function
* - bound constant buffer contents
* - bound textures
* - blend color
* - etc.
*
* Basically everything needed at some point in the future to
* rasterize triangles for the current state.
*
* Additionally this will set up the state needed for the rasterizer
* to process and bin incoming triangles. That would include such
* things as:
* - cull mode
* - ???
* - etc.
*
*/
void setup_prepare( struct setup_context *setup )
{
struct llvmpipe_context *lp = setup->llvmpipe;
if (lp->dirty) {
llvmpipe_update_derived(lp);
}
lp->quad.first->begin( lp->quad.first );
if (lp->reduced_api_prim == PIPE_PRIM_TRIANGLES &&
lp->rasterizer->fill_cw == PIPE_POLYGON_MODE_FILL &&
lp->rasterizer->fill_ccw == PIPE_POLYGON_MODE_FILL) {
/* we'll do culling */
setup->winding = lp->rasterizer->cull_mode;
}
else {
/* 'draw' will do culling */
setup->winding = PIPE_WINDING_NONE;
}
setup_prepare_tri( setup->llvmpipe );
}
void setup_destroy_context( struct setup_context *setup )
{
FREE( setup );
}
/**
* Create a new primitive setup/render stage.
*/
struct setup_context *setup_create_context( struct llvmpipe_context *llvmpipe )
{
struct setup_context *setup = CALLOC_STRUCT(setup_context);
unsigned i;
setup->llvmpipe = llvmpipe;
return setup;
}
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