static INLINE void
check_space( struct vbuf_stage *vbuf, unsigned nr )
{
if (vbuf->nr_vertices + nr > vbuf->max_vertices ||
vbuf->nr_indices + nr > vbuf->max_indices)
{
vbuf_flush_vertices( vbuf );
vbuf_alloc_vertices( vbuf );
}
}
/**
* Set the prim type for subsequent vertices.
* This may result in a new vertex size. The existing vbuffer (if any)
* will be flushed if needed and a new one allocated.
*/
static void
vbuf_start_prim( struct vbuf_stage *vbuf, uint prim )
{
struct translate_key hw_key;
unsigned dst_offset;
unsigned i;
vbuf->render->set_primitive(vbuf->render, prim);
/* Must do this after set_primitive() above:
*
* XXX: need some state managment to track when this needs to be
* recalculated. The driver should tell us whether there was a
* state change.
*/
vbuf->vinfo = vbuf->render->get_vertex_info(vbuf->render);
vbuf->vertex_size = vbuf->vinfo->size * sizeof(float);
/* Translate from pipeline vertices to hw vertices.
*/
dst_offset = 0;
for (i = 0; i < vbuf->vinfo->num_attribs; i++) {
unsigned emit_sz = 0;
unsigned src_buffer = 0;
unsigned output_format;
unsigned src_offset = (vbuf->vinfo->attrib[i].src_index * 4 * sizeof(float) );
switch (vbuf->vinfo->attrib[i].emit) {
case EMIT_4F:
output_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
emit_sz = 4 * sizeof(float);
break;
case EMIT_3F:
output_format = PIPE_FORMAT_R32G32B32_FLOAT;
emit_sz = 3 * sizeof(float);
break;
case EMIT_2F:
output_format = PIPE_FORMAT_R32G32_FLOAT;
emit_sz = 2 * sizeof(float);
break;
case EMIT_1F:
output_format = PIPE_FORMAT_R32_FLOAT;
emit_sz = 1 * sizeof(float);
break;
case EMIT_1F_PSIZE:
output_format = PIPE_FORMAT_R32_FLOAT;
emit_sz = 1 * sizeof(float);
src_buffer = 1;
src_offset = 0;
break;
case EMIT_4UB:
output_format = PIPE_FORMAT_B8G8R8A8_UNORM;
emit_sz = 4 * sizeof(ubyte);
break;
default:
assert(0);
output_format = PIPE_FORMAT_NONE;
emit_sz = 0;
break;
}
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].output_format = output_format;
hw_key.element[i].output_offset = dst_offset;
dst_offset += emit_sz;
}
hw_key.nr_elements = vbuf->vinfo->num_attribs;
hw_key.output_stride = vbuf->vinfo->size * 4;
/* Don't bother with caching at this stage:
*/
if (!vbuf->translate ||
translate_key_compare(&vbuf->translate->key, &hw_key) != 0)
{
translate_key_sanitize(&hw_key);
vbuf->translate = translate_cache_find(vbuf->cache, &hw_key);
vbuf->translate->set_buffer(vbuf->translate, 1, &vbuf->point_size, 0);
}
vbuf->point_size = vbuf->stage.draw->rasterizer->point_size;
/* Allocate new buffer?
*/
assert(vbuf->vertices == NULL);
vbuf_alloc_vertices(vbuf);
}
/**
* Set the prim type for subsequent vertices.
* This may result in a new vertex size. The existing vbuffer (if any)
* will be flushed if needed and a new one allocated.
*/
static void
vbuf_start_prim( struct vbuf_stage *vbuf, uint prim )
{
struct translate_key hw_key;
unsigned dst_offset;
unsigned i;
const struct vertex_info *vinfo;
vbuf->render->set_primitive(vbuf->render, prim);
/* Must do this after set_primitive() above:
*
* XXX: need some state managment to track when this needs to be
* recalculated. The driver should tell us whether there was a
* state change.
*/
vbuf->vinfo = vbuf->render->get_vertex_info(vbuf->render);
vinfo = vbuf->vinfo;
vbuf->vertex_size = vinfo->size * sizeof(float);
/* 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;
enum pipe_format 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 */
assert(emit_sz != 0);
if (vinfo->attrib[i].emit == EMIT_1F_PSIZE) {
src_buffer = 1;
src_offset = 0;
}
else if (vinfo->attrib[i].src_index == DRAW_ATTR_NONEXIST) {
/* elements which don't exist will get assigned zeros */
src_buffer = 2;
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 = vbuf->vertex_size;
/* Don't bother with caching at this stage:
*/
if (!vbuf->translate ||
translate_key_compare(&vbuf->translate->key, &hw_key) != 0)
{
translate_key_sanitize(&hw_key);
vbuf->translate = translate_cache_find(vbuf->cache, &hw_key);
vbuf->translate->set_buffer(vbuf->translate, 1, &vbuf->point_size, 0, ~0);
vbuf->translate->set_buffer(vbuf->translate, 2, &vbuf->zero4[0], 0, ~0);
}
vbuf->point_size = vbuf->stage.draw->rasterizer->point_size;
/* Allocate new buffer?
*/
assert(vbuf->vertices == NULL);
vbuf_alloc_vertices(vbuf);
}
