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radv/gfx10: fix a possible hang with exp pos0 with done=0 and exec=0 

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
This commit is contained in:
Samuel Pitoiset 2019-06-25 12:05:35 +02:00 committed by Bas Nieuwenhuizen
parent b3a53de5fa
commit 34b185cc43
1 changed files with 8 additions and 0 deletions
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8
src/amd/vulkan/radv_nir_to_llvm.c
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@ -2989,6 +2989,14 @@ handle_vs_outputs_post(struct radv_shader_context *ctx,
num_pos_exports++;
}
/* Navi10-14 skip POS0 exports if EXEC=0 and DONE=0, causing a hang.
* Setting valid_mask=1 prevents it and has no other effect.
*/
if (ctx->ac.family == CHIP_NAVI10 ||
ctx->ac.family == CHIP_NAVI12 ||
ctx->ac.family == CHIP_NAVI14)
pos_args[0].valid_mask = 1;
pos_idx = 0;
for (i = 0; i < 4; i++) {
if (!pos_args[i].out[0])