fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-05-06 09:28:07 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

i915g: Improve constant handling

Browse source
This commit is contained in:
Jakob Bornecrantz 2011-01-24 00:35:53 +01:00
parent c40ec20c27
commit 9a9630dcf0
1 changed files with 15 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
src/gallium/drivers/i915/i915_state.c
View file

@ -535,21 +535,31 @@ static void i915_set_constant_buffer(struct pipe_context *pipe,
/* if we have a new buffer compare it with the old one */
if (buf) {
struct i915_buffer *ir = i915_buffer(buf);
struct i915_buffer *ibuf = i915_buffer(buf);
struct pipe_resource *old_buf = i915->constants[shader];
struct i915_buffer *old = old_buf ? i915_buffer(old_buf) : NULL;
unsigned old_num = i915->current.num_user_constants[shader];
new_num = ir->b.b.width0 / 4 * sizeof(float);
new_num = ibuf->b.b.width0 / 4 * sizeof(float);
if (old && new_num != i915->current.num_user_constants[shader])
diff = memcmp(old->data, ir->data, ir->b.b.width0);
if (old_num == new_num) {
if (old_num == 0)
diff = FALSE;
#if 0
/* XXX no point in running this code since st/mesa only uses user buffers */
/* Can't compare the buffer data since they are userbuffers */
else if (old && old->free_on_destroy)
diff = memcmp(old->data, ibuf->data, ibuf->b.b.width0);
#else
(void)old;
#endif
}
} else {
diff = i915->current.num_user_constants[shader] != 0;
}
/*
* flush before updateing the state.
* XXX: looks like its okay to skip the flush for vertex cbufs
*/
if (diff && shader == PIPE_SHADER_FRAGMENT)
draw_flush(i915->draw);