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aco: ensure MRT0 is written with dual source blending

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Fixes crucible test func.shader.dualsrc_mrt0_undef on polaris10.

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Cc: 22.3 mesa-stable
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19806>
This commit is contained in:
Rhys Perry
2022-11-16 15:08:34 +00:00
committed by Marge Bot
parent ea0ae17fc4
commit 3061bc792d
1 changed files with 13 additions and 0 deletions
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13
src/amd/compiler/aco_instruction_selection.cpp
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@@ -11495,6 +11495,19 @@ create_fs_exports(isel_context* ctx)
struct aco_export_mrt mrts[8];
unsigned compacted_mrt_index = 0;
/* MRT compaction doesn't work with dual-source blending. Dual-source blending seems to
* require MRT0 to be written. Just copy MRT1 into MRT0. Skipping MRT1 exports seems to be
* fine.
*/
if (ctx->options->key.ps.mrt0_is_dual_src && !ctx->outputs.mask[FRAG_RESULT_DATA0] &&
ctx->outputs.mask[FRAG_RESULT_DATA1]) {
u_foreach_bit (j, ctx->outputs.mask[FRAG_RESULT_DATA1]) {
ctx->outputs.temps[FRAG_RESULT_DATA0 * 4u + j] =
ctx->outputs.temps[FRAG_RESULT_DATA1 * 4u + j];
}
ctx->outputs.mask[FRAG_RESULT_DATA0] = ctx->outputs.mask[FRAG_RESULT_DATA1];
}
/* Export all color render targets. */
for (unsigned i = FRAG_RESULT_DATA0; i < FRAG_RESULT_DATA7 + 1; ++i) {
unsigned idx = i - FRAG_RESULT_DATA0;