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/**************************************************************************
*
* 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 "util/u_math.h"
#include "draw/draw_context.h"
#include "draw/draw_private.h"
#include "draw/draw_vbuf.h"
#include "draw/draw_pt.h"
#include "translate/translate.h"
#include "translate/translate_cache.h"
struct pt_fetch {
struct draw_context *draw;
struct translate *translate;
unsigned vertex_size;
struct translate_cache *cache;
};
/* Perform the fetch from API vertex elements & vertex buffers, to a
* contiguous set of float[4] attributes as required for the
* vertex_shader->run_linear() method.
*
* This is used in all cases except pure passthrough
* (draw_pt_fetch_emit.c) which has its own version to translate
* directly to hw vertices.
*
*/
void draw_pt_fetch_prepare( struct pt_fetch *fetch,
unsigned vs_input_count,
unsigned vertex_size,
unsigned instance_id_index )
{
struct draw_context *draw = fetch->draw;
unsigned nr_inputs;
unsigned i, nr = 0, ei = 0;
unsigned dst_offset = 0;
unsigned num_extra_inputs = 0;
struct translate_key key;
fetch->vertex_size = vertex_size;
/* Always emit/leave space for a vertex header.
*
* It's worth considering whether the vertex headers should contain
* a pointer to the 'data', rather than having it inline.
* Something to look at after we've fully switched over to the pt
* paths.
*/
{
/* Need to set header->vertex_id = 0xffff somehow.
*/
key.element[nr].type = TRANSLATE_ELEMENT_NORMAL;
key.element[nr].input_format = PIPE_FORMAT_R32_FLOAT;
key.element[nr].input_buffer = draw->pt.nr_vertex_buffers;
key.element[nr].input_offset = 0;
key.element[nr].instance_divisor = 0;
key.element[nr].output_format = PIPE_FORMAT_R32_FLOAT;
key.element[nr].output_offset = dst_offset;
dst_offset += 1 * sizeof(float);
nr++;
/* Just leave the clip[] array untouched.
*/
dst_offset += 4 * sizeof(float);
}
if (instance_id_index != ~0) {
num_extra_inputs++;
}
assert(draw->pt.nr_vertex_elements + num_extra_inputs >= vs_input_count);
nr_inputs = MIN2(vs_input_count, draw->pt.nr_vertex_elements + num_extra_inputs);
for (i = 0; i < nr_inputs; i++) {
if (i == instance_id_index) {
key.element[nr].type = TRANSLATE_ELEMENT_INSTANCE_ID;
key.element[nr].input_format = PIPE_FORMAT_R32_USCALED;
key.element[nr].output_format = PIPE_FORMAT_R32_USCALED;
key.element[nr].output_offset = dst_offset;
dst_offset += sizeof(uint);
} else {
key.element[nr].type = TRANSLATE_ELEMENT_NORMAL;
key.element[nr].input_format = draw->pt.vertex_element[ei].src_format;
key.element[nr].input_buffer = draw->pt.vertex_element[ei].vertex_buffer_index;
key.element[nr].input_offset = draw->pt.vertex_element[ei].src_offset;
key.element[nr].instance_divisor = draw->pt.vertex_element[ei].instance_divisor;
key.element[nr].output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
key.element[nr].output_offset = dst_offset;
ei++;
dst_offset += 4 * sizeof(float);
}
nr++;
}
assert(dst_offset <= vertex_size);
key.nr_elements = nr;
key.output_stride = vertex_size;
if (!fetch->translate ||
translate_key_compare(&fetch->translate->key, &key) != 0)
{
translate_key_sanitize(&key);
fetch->translate = translate_cache_find(fetch->cache, &key);
{
static struct vertex_header vh = { 0,
1,
0,
UNDEFINED_VERTEX_ID,
{ .0f, .0f, .0f, .0f } };
fetch->translate->set_buffer(fetch->translate,
draw->pt.nr_vertex_buffers,
&vh,
0);
}
}
}
void draw_pt_fetch_run( struct pt_fetch *fetch,
const unsigned *elts,
unsigned count,
char *verts )
{
struct draw_context *draw = fetch->draw;
struct translate *translate = fetch->translate;
unsigned i;
for (i = 0; i < draw->pt.nr_vertex_buffers; i++) {
translate->set_buffer(translate,
i,
((char *)draw->pt.user.vbuffer[i] +
draw->pt.vertex_buffer[i].buffer_offset),
draw->pt.vertex_buffer[i].stride );
}
translate->run_elts( translate,
elts,
count,
draw->instance_id,
verts );
}
void draw_pt_fetch_run_linear( struct pt_fetch *fetch,
unsigned start,
unsigned count,
char *verts )
{
struct draw_context *draw = fetch->draw;
struct translate *translate = fetch->translate;
unsigned i;
for (i = 0; i < draw->pt.nr_vertex_buffers; i++) {
translate->set_buffer(translate,
i,
((char *)draw->pt.user.vbuffer[i] +
draw->pt.vertex_buffer[i].buffer_offset),
draw->pt.vertex_buffer[i].stride );
}
translate->run( translate,
start,
count,
draw->instance_id,
verts );
}
struct pt_fetch *draw_pt_fetch_create( struct draw_context *draw )
{
struct pt_fetch *fetch = CALLOC_STRUCT(pt_fetch);
if (!fetch)
return NULL;
fetch->draw = draw;
fetch->cache = translate_cache_create();
if (!fetch->cache) {
FREE(fetch);
return NULL;
}
return fetch;
}
void draw_pt_fetch_destroy( struct pt_fetch *fetch )
{
if (fetch->cache)
translate_cache_destroy(fetch->cache);
FREE(fetch);
}
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