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gallivm: don't use AoS path if min/mag filter are different with multiple lods 

Instead of enhancing the AoS path so it can deal with it, just use SoA. Fixing
AoS path wouldn't be all that difficult (use all the same logic as SoA) but
considered not worth it for now.

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
This commit is contained in:
Roland Scheidegger 2013-08-29 20:52:18 +02:00
parent bdf3f50e9a
commit 61add3cc3c
1 changed files with 6 additions and 1 deletions
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7
src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c
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@ -2264,6 +2264,10 @@ lp_build_sample_soa(struct gallivm_state *gallivm,
/* not sure this is strictly needed or simply impossible */
static_sampler_state->compare_mode == PIPE_TEX_COMPARE_NONE &&
lp_is_simple_wrap_mode(static_sampler_state->wrap_s);
use_aos &= bld.num_lods <= num_quads ||
static_sampler_state->min_img_filter ==
static_sampler_state->mag_img_filter;
if (dims > 1) {
use_aos &= lp_is_simple_wrap_mode(static_sampler_state->wrap_t);
if (dims > 2) {
@ -2292,7 +2296,8 @@ lp_build_sample_soa(struct gallivm_state *gallivm,
/*
* we only try 8-wide sampling with soa as it appears to
* be a loss with aos with AVX (but it should work).
* be a loss with aos with AVX (but it should work, except
* for conformance if min_filter != mag_filter if num_lods > 1).
* (It should be faster if we'd support avx2)
*/
if (num_quads == 1 || !use_aos) {