/**************************************************************************
*
* Copyright 2008 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 "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_prim.h"
struct pt_emit {
struct draw_context *draw;
struct translate *translate;
struct translate_cache *cache;
unsigned prim;
const struct vertex_info *vinfo;
};
void
draw_pt_emit_prepare(struct pt_emit *emit,
unsigned prim,
unsigned *max_vertices)
{
struct draw_context *draw = emit->draw;
const struct vertex_info *vinfo;
unsigned dst_offset;
struct translate_key hw_key;
unsigned i;
/* XXX: need to flush to get prim_vbuf.c to release its allocation??
*/
draw_do_flush( draw, DRAW_FLUSH_BACKEND );
/* XXX: may need to defensively reset this later on as clipping can
* clobber this state in the render backend.
*/
emit->prim = prim;
draw->render->set_primitive(draw->render, emit->prim);
/* Must do this after set_primitive() above:
*/
emit->vinfo = vinfo = draw->render->get_vertex_info(draw->render);
/* Translate from pipeline vertices to hw vertices.
*/
dst_offset = 0;
for (i = 0; i < vinfo->num_attribs; i++) {
unsigned emit_sz = 0;
unsigned src_buffer = 0;
unsigned output_format;
unsigned src_offset = (vinfo->attrib[i].src_index * 4 * sizeof(float) );
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 */
if (vinfo->attrib[i].emit == EMIT_1F_PSIZE) {
src_buffer = 1;
src_offset = 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 = src_buffer;
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;
}
hw_key.nr_elements = vinfo->num_attribs;
hw_key.output_stride = vinfo->size * 4;
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);
}
*max_vertices = (draw->render->max_vertex_buffer_bytes /
(vinfo->size * 4));
}
void
draw_pt_emit(struct pt_emit *emit,
const struct draw_vertex_info *vert_info,
const struct draw_prim_info *prim_info)
{
const float (*vertex_data)[4] = (const float (*)[4])vert_info->verts->data;
unsigned vertex_count = vert_info->count;
unsigned stride = vert_info->stride;
const ushort *elts = prim_info->elts;
struct draw_context *draw = emit->draw;
struct translate *translate = emit->translate;
struct vbuf_render *render = draw->render;
unsigned start, i;
void *hw_verts;
/* 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;
/* XXX: and work out some way to coordinate the render primitive
* between vbuf.c and here...
*/
draw->render->set_primitive(draw->render, emit->prim);
render->allocate_vertices(render,
(ushort)translate->key.output_stride,
(ushort)vertex_count);
hw_verts = render->map_vertices( render );
if (!hw_verts) {
debug_warn_once("map of vertex buffer failed (out of memory?)");
return;
}
translate->set_buffer(translate,
0,
vertex_data,
stride,
~0);
translate->set_buffer(translate,
1,
&draw->rasterizer->point_size,
0,
~0);
/* fetch/translate vertex attribs to fill hw_verts[] */
translate->run(translate,
0,
vertex_count,
draw->start_instance,
draw->instance_id,
hw_verts );
render->unmap_vertices(render, 0, vertex_count - 1);
for (start = i = 0;
i < prim_info->primitive_count;
start += prim_info->primitive_lengths[i], i++)
{
render->draw_elements(render,
elts + start,
prim_info->primitive_lengths[i]);
}
render->release_vertices(render);
}
void
draw_pt_emit_linear(struct pt_emit *emit,
const struct draw_vertex_info *vert_info,
const struct draw_prim_info *prim_info)
{
const float (*vertex_data)[4] = (const float (*)[4])vert_info->verts->data;
unsigned stride = vert_info->stride;
unsigned count = vert_info->count;
struct draw_context *draw = emit->draw;
struct translate *translate = emit->translate;
struct vbuf_render *render = draw->render;
void *hw_verts;
unsigned start, i;
#if 0
debug_printf("Linear emit\n");
#endif
/* XXX: need to flush to get prim_vbuf.c to release its allocation??
*/
draw_do_flush( draw, DRAW_FLUSH_BACKEND );
/* XXX: and work out some way to coordinate the render primitive
* between vbuf.c and here...
*/
draw->render->set_primitive(draw->render, emit->prim);
if (!render->allocate_vertices(render,
(ushort)translate->key.output_stride,
(ushort)count))
goto fail;
hw_verts = render->map_vertices( render );
if (!hw_verts)
goto fail;
translate->set_buffer(translate, 0,
vertex_data, stride, count - 1);
translate->set_buffer(translate, 1,
&draw->rasterizer->point_size,
0, ~0);
translate->run(translate,
0,
count,
draw->start_instance,
draw->instance_id,
hw_verts);
if (0) {
unsigned i;
for (i = 0; i < count; i++) {
debug_printf("\n\n%s vertex %d:\n", __FUNCTION__, i);
draw_dump_emitted_vertex( emit->vinfo,
(const uint8_t *)hw_verts +
translate->key.output_stride * i );
}
}
render->unmap_vertices( render, 0, count - 1 );
for (start = i = 0;
i < prim_info->primitive_count;
start += prim_info->primitive_lengths[i], i++)
{
render->draw_arrays(render,
start,
prim_info->primitive_lengths[i]);
}
render->release_vertices(render);
return;
fail:
debug_warn_once("allocate or map of vertex buffer failed (out of memory?)");
return;
}
struct pt_emit *
draw_pt_emit_create(struct draw_context *draw)
{
struct pt_emit *emit = CALLOC_STRUCT(pt_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_emit_destroy(struct pt_emit *emit)
{
if (emit->cache)
translate_cache_destroy(emit->cache);
FREE(emit);
}