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i965: Add performance debug for fast clear fallbacks.

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Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Eric Anholt 2012-07-12 13:14:42 -07:00
parent 0e723b135b
commit b4da272a6e
1 changed files with 9 additions and 1 deletions
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10
src/mesa/drivers/dri/i965/brw_clear.c
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@ -107,14 +107,22 @@ brw_fast_clear_depth(struct gl_context *ctx)
* a previous clear had happened at a different clear value and resolve it
* first.
*/
if (ctx->Scissor.Enabled)
if (ctx->Scissor.Enabled) {
perf_debug("Failed to fast clear depth due to scissor being enabled. "
"Possible 5%% performance win if avoided.\n");
return false;
}
/* The rendered area has to be 8x4 samples, not resolved pixels, so we look
* at the miptree slice dimensions instead of renderbuffer size.
*/
if (mt->level[depth_irb->mt_level].width % 8 != 0 ||
mt->level[depth_irb->mt_level].height % 4 != 0) {
perf_debug("Failed to fast clear depth due to width/height %d,%d not "
"being aligned to 8,4. Possible 5%% performance win if "
"avoided\n",
mt->level[depth_irb->mt_level].width,
mt->level[depth_irb->mt_level].height);
return false;
}