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/**************************************************************************
*
* Copyright 2010 VMware, Inc.
* 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 VMWARE 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 "util/u_memory.h"
#include "draw/draw_context.h"
#include "draw/draw_private.h"
#include "draw/draw_vbuf.h"
#include "draw/draw_vertex.h"
#include "draw/draw_pt.h"
#include "translate/translate.h"
#include "translate/translate_cache.h"
#include "util/u_format.h"
struct pt_so_emit {
struct draw_context *draw;
struct translate *translate;
struct translate_cache *cache;
unsigned prim;
const struct vertex_info *vinfo;
boolean has_so;
};
static void
prepare_so_emit( struct pt_so_emit *emit,
const struct vertex_info *vinfo )
{
struct draw_context *draw = emit->draw;
unsigned i;
struct translate_key hw_key;
unsigned dst_offset = 0;
unsigned output_stride = 0;
if (emit->has_so) {
for (i = 0; i < draw->so.state.num_outputs; ++i) {
unsigned src_offset = (draw->so.state.register_index[i] * 4 *
sizeof(float) );
unsigned output_format;
unsigned emit_sz = 0;
/*unsigned output_bytes = util_format_get_blocksize(output_format);
unsigned nr_compo = util_format_get_nr_components(output_format);*/
output_format = draw_translate_vinfo_format(vinfo->attrib[i].emit);
emit_sz = draw_translate_vinfo_size(vinfo->attrib[i].emit);
/* doesn't handle EMIT_OMIT */
assert(emit_sz != 0);
hw_key.element[i].type = TRANSLATE_ELEMENT_NORMAL;
hw_key.element[i].input_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
hw_key.element[i].input_buffer = 0;
hw_key.element[i].input_offset = src_offset;
hw_key.element[i].instance_divisor = 0;
hw_key.element[i].output_format = output_format;
hw_key.element[i].output_offset = dst_offset;
dst_offset += emit_sz;
output_stride += emit_sz;
}
hw_key.nr_elements = draw->so.state.num_outputs;
hw_key.output_stride = output_stride;
if (!emit->translate ||
translate_key_compare(&emit->translate->key, &hw_key) != 0)
{
translate_key_sanitize(&hw_key);
emit->translate = translate_cache_find(emit->cache, &hw_key);
}
} else {
/* no stream output */
emit->translate = NULL;
}
}
void draw_pt_so_emit_prepare( struct pt_so_emit *emit,
unsigned prim )
{
struct draw_context *draw = emit->draw;
boolean ok;
emit->has_so = (draw->so.state.num_outputs > 0);
if (!emit->has_so)
return;
/* XXX: need to flush to get prim_vbuf.c to release its allocation??
*/
draw_do_flush( draw, DRAW_FLUSH_BACKEND );
emit->prim = prim;
ok = draw->render->set_primitive(draw->render, emit->prim);
if (!ok) {
assert(0);
return;
}
/* Must do this after set_primitive() above: */
emit->vinfo = draw->render->get_vertex_info(draw->render);
prepare_so_emit( emit, emit->vinfo );
}
void draw_pt_so_emit( struct pt_so_emit *emit,
const float (*vertex_data)[4],
unsigned vertex_count,
unsigned stride )
{
struct draw_context *draw = emit->draw;
struct translate *translate = emit->translate;
struct vbuf_render *render = draw->render;
void *so_buffer;
if (!emit->has_so)
return;
so_buffer = draw->so.buffers[0];
/* XXX: need to flush to get prim_vbuf.c to release its allocation??*/
draw_do_flush( draw, DRAW_FLUSH_BACKEND );
if (vertex_count == 0)
return;
if (vertex_count >= UNDEFINED_VERTEX_ID) {
assert(0);
return;
}
/* XXX we only support single output buffer right now */
debug_assert(draw->so.num_buffers >= 0);
translate->set_buffer(translate, 0, vertex_data,
stride, ~0);
translate->run(translate, 0, vertex_count,
draw->instance_id, so_buffer);
}
struct pt_so_emit *draw_pt_so_emit_create( struct draw_context *draw )
{
struct pt_so_emit *emit = CALLOC_STRUCT(pt_so_emit);
if (!emit)
return NULL;
emit->draw = draw;
emit->cache = translate_cache_create();
if (!emit->cache) {
FREE(emit);
return NULL;
}
return emit;
}
void draw_pt_so_emit_destroy( struct pt_so_emit *emit )
{
if (emit->cache)
translate_cache_destroy(emit->cache);
FREE(emit);
}
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