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gallium/u_vbuf: optimize looping over the list of buffers to upload

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This commit is contained in:
Marek Olšák 2012-10-28 20:11:32 +01:00
parent a97b053fdd
commit 46b0893fb9
1 changed files with 12 additions and 9 deletions
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21
src/gallium/auxiliary/util/u_vbuf.c
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@ -831,18 +831,18 @@ u_vbuf_upload_buffers(struct u_vbuf *mgr,
{
unsigned i;
unsigned nr_velems = mgr->ve->count;
unsigned nr_vbufs = util_last_bit(mgr->enabled_vb_mask);
struct pipe_vertex_element *velems =
mgr->using_translate ? mgr->fallback_velems : mgr->ve->ve;
unsigned start_offset[PIPE_MAX_ATTRIBS];
unsigned end_offset[PIPE_MAX_ATTRIBS] = {0};
unsigned end_offset[PIPE_MAX_ATTRIBS];
uint32_t buffer_mask = 0;
/* Determine how much data needs to be uploaded. */
for (i = 0; i < nr_velems; i++) {
struct pipe_vertex_element *velem = &velems[i];
unsigned index = velem->vertex_buffer_index;
struct pipe_vertex_buffer *vb = &mgr->vertex_buffer[index];
unsigned instance_div, first, size;
unsigned instance_div, first, size, index_bit;
/* Skip the buffers generated by translate. */
if (index == mgr->fallback_vbs[VB_VERTEX] ||
@ -872,8 +872,10 @@ u_vbuf_upload_buffers(struct u_vbuf *mgr,
size = vb->stride * (num_vertices - 1) + mgr->ve->src_format_size[i];
}
index_bit = 1 << index;
/* Update offsets. */
if (!end_offset[index]) {
if (!(buffer_mask & index_bit)) {
start_offset[index] = first;
end_offset[index] = first + size;
} else {
@ -882,19 +884,20 @@ u_vbuf_upload_buffers(struct u_vbuf *mgr,
if (first + size > end_offset[index])
end_offset[index] = first + size;
}
buffer_mask |= index_bit;
}
/* Upload buffers. */
for (i = 0; i < nr_vbufs; i++) {
unsigned start, end = end_offset[i];
while (buffer_mask) {
unsigned start, end;
struct pipe_vertex_buffer *real_vb;
const uint8_t *ptr;
if (!end) {
continue;
}
i = u_bit_scan(&buffer_mask);
start = start_offset[i];
end = end_offset[i];
assert(start < end);
real_vb = &mgr->real_vertex_buffer[i];