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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 "pipe/p_util.h"
#include "draw/draw_context.h"
#include "draw/draw_vbuf.h"
#include "draw/draw_vertex.h"
#include "draw/draw_pt.h"
#include "draw/draw_vs.h"
#include "translate/translate.h"
struct fetch_pipeline_middle_end {
struct draw_pt_middle_end base;
struct draw_context *draw;
struct pt_emit *emit;
struct pt_fetch *fetch;
struct pt_post_vs *post_vs;
unsigned vertex_data_offset;
unsigned vertex_size;
unsigned prim;
unsigned opt;
};
static void fetch_pipeline_prepare( struct draw_pt_middle_end *middle,
unsigned prim,
unsigned opt )
{
struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
struct draw_context *draw = fpme->draw;
struct draw_vertex_shader *vs = draw->vertex_shader;
/* Add one to num_outputs because the pipeline occasionally tags on
* an additional texcoord, eg for AA lines.
*/
unsigned nr = MAX2( vs->info.num_inputs,
vs->info.num_outputs + 1 );
fpme->prim = prim;
fpme->opt = opt;
/* Always leave room for the vertex header whether we need it or
* not. It's hard to get rid of it in particular because of the
* viewport code in draw_pt_post_vs.c.
*/
fpme->vertex_size = sizeof(struct vertex_header) + nr * 4 * sizeof(float);
draw_pt_fetch_prepare( fpme->fetch,
fpme->vertex_size );
/* XXX: it's not really gl rasterization rules we care about here,
* but gl vs dx9 clip spaces.
*/
draw_pt_post_vs_prepare( fpme->post_vs,
draw->rasterizer->bypass_clipping,
draw->identity_viewport,
draw->rasterizer->gl_rasterization_rules );
if (!(opt & PT_PIPELINE))
draw_pt_emit_prepare( fpme->emit,
prim );
/* No need to prepare the shader.
*/
vs->prepare(vs, draw);
}
static void fetch_pipeline_run( struct draw_pt_middle_end *middle,
const unsigned *fetch_elts,
unsigned fetch_count,
const ushort *draw_elts,
unsigned draw_count )
{
struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
struct draw_context *draw = fpme->draw;
struct draw_vertex_shader *shader = draw->vertex_shader;
unsigned opt = fpme->opt;
struct vertex_header *pipeline_verts =
(struct vertex_header *)MALLOC(fpme->vertex_size * fetch_count);
if (!pipeline_verts) {
/* Not much we can do here - just skip the rendering.
*/
assert(0);
return;
}
/* Fetch into our vertex buffer
*/
draw_pt_fetch_run( fpme->fetch,
fetch_elts,
fetch_count,
(char *)pipeline_verts );
/* Run the shader, note that this overwrites the data[] parts of
* the pipeline verts. If there is no shader, ie a bypass shader,
* then the inputs == outputs, and are already in the correct
* place.
*/
if (opt & PT_SHADE)
{
shader->run_linear(shader,
(const float (*)[4])pipeline_verts->data,
( float (*)[4])pipeline_verts->data,
(const float (*)[4])draw->pt.user.constants,
fetch_count,
fpme->vertex_size,
fpme->vertex_size);
}
if (draw_pt_post_vs_run( fpme->post_vs,
pipeline_verts,
fetch_count,
fpme->vertex_size ))
{
opt |= PT_PIPELINE;
}
/* Do we need to run the pipeline?
*/
if (opt & PT_PIPELINE) {
draw_pipeline_run( fpme->draw,
fpme->prim,
pipeline_verts,
fetch_count,
fpme->vertex_size,
draw_elts,
draw_count );
}
else {
draw_pt_emit( fpme->emit,
(const float (*)[4])pipeline_verts->data,
fetch_count,
fpme->vertex_size,
draw_elts,
draw_count );
}
FREE(pipeline_verts);
}
static void fetch_pipeline_finish( struct draw_pt_middle_end *middle )
{
/* nothing to do */
}
static void fetch_pipeline_destroy( struct draw_pt_middle_end *middle )
{
struct fetch_pipeline_middle_end *fpme = (struct fetch_pipeline_middle_end *)middle;
if (fpme->fetch)
draw_pt_fetch_destroy( fpme->fetch );
if (fpme->emit)
draw_pt_emit_destroy( fpme->emit );
if (fpme->post_vs)
draw_pt_post_vs_destroy( fpme->post_vs );
FREE(middle);
}
struct draw_pt_middle_end *draw_pt_fetch_pipeline_or_emit( struct draw_context *draw )
{
struct fetch_pipeline_middle_end *fpme = CALLOC_STRUCT( fetch_pipeline_middle_end );
if (!fpme)
goto fail;
fpme->base.prepare = fetch_pipeline_prepare;
fpme->base.run = fetch_pipeline_run;
fpme->base.finish = fetch_pipeline_finish;
fpme->base.destroy = fetch_pipeline_destroy;
fpme->draw = draw;
fpme->fetch = draw_pt_fetch_create( draw );
if (!fpme->fetch)
goto fail;
fpme->post_vs = draw_pt_post_vs_create( draw );
if (!fpme->post_vs)
goto fail;
fpme->emit = draw_pt_emit_create( draw );
if (!fpme->emit)
goto fail;
return &fpme->base;
fail:
if (fpme)
fetch_pipeline_destroy( &fpme->base );
return NULL;
}
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