diff options
Diffstat (limited to 'src/intel/blorp')
| -rw-r--r-- | src/intel/blorp/blorp_blit.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/src/intel/blorp/blorp_blit.c b/src/intel/blorp/blorp_blit.c index 19f6c363f1e..d119a99b31f 100644 --- a/src/intel/blorp/blorp_blit.c +++ b/src/intel/blorp/blorp_blit.c @@ -21,7 +21,7 @@ * IN THE SOFTWARE. */ -#include "compiler/nir/nir_builder.h" +#include "blorp_nir_builder.h" #include "blorp_priv.h" @@ -680,6 +680,11 @@ blorp_nir_manual_blend_average(nir_builder *b, struct brw_blorp_blit_vars *v, * ld2dms are equivalent (since all samples are on sample slice 0). * Since we have already sampled from sample 0, all we need to do is * skip the remaining fetches and averaging if MCS is zero. + * + * It's also trivial to detect when the MCS has the magic clear color + * value. In this case, the txf we did on sample 0 will return the + * clear color and we can skip the remaining fetches just like we do + * when MCS == 0. */ nir_ssa_def *mcs_zero = nir_ieq(b, nir_channel(b, mcs, 0), nir_imm_int(b, 0)); @@ -687,9 +692,11 @@ blorp_nir_manual_blend_average(nir_builder *b, struct brw_blorp_blit_vars *v, mcs_zero = nir_iand(b, mcs_zero, nir_ieq(b, nir_channel(b, mcs, 1), nir_imm_int(b, 0))); } + nir_ssa_def *mcs_clear = + blorp_nir_mcs_is_clear_color(b, mcs, tex_samples); nir_if *if_stmt = nir_if_create(b->shader); - if_stmt->condition = nir_src_for_ssa(mcs_zero); + if_stmt->condition = nir_src_for_ssa(nir_ior(b, mcs_zero, mcs_clear)); nir_cf_node_insert(b->cursor, &if_stmt->cf_node); b->cursor = nir_after_cf_list(&if_stmt->then_list); |