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radeonsi: fix ARB_transform_feedback_overflow_query on <= VI

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The result written by the shader workaround needs to be written back, or
the CP may read stale data.

Fixes: 78476cfe07 ("radeonsi: enable ARB_transform_feedback_overflow_query")
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Nicolai Hähnle
2017-08-25 16:19:56 +02:00
parent 55df3d2286
commit 097cfe9fde
3 changed files with 12 additions and 1 deletions
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4
src/gallium/drivers/radeonsi/si_pipe.c
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@@ -1078,8 +1078,10 @@ struct pipe_screen *radeonsi_screen_create(struct radeon_winsys *ws,
sscreen->b.barrier_flags.cp_to_L2 = SI_CONTEXT_INV_SMEM_L1 |
SI_CONTEXT_INV_VMEM_L1;
if (sscreen->b.chip_class <= VI)
if (sscreen->b.chip_class <= VI) {
sscreen->b.barrier_flags.cp_to_L2 |= SI_CONTEXT_INV_GLOBAL_L2;
sscreen->b.barrier_flags.L2_to_cp |= SI_CONTEXT_WRITEBACK_GLOBAL_L2;
}
sscreen->b.barrier_flags.compute_to_L2 = SI_CONTEXT_CS_PARTIAL_FLUSH;