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freedreno/ir3: Skip tess epilogue if the program is missing stores.

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Some of the negative API tests make shaders for tess stages that don't do
all the stores they need to.  Once we start precompiling (or doing
shader-db of tess), we need to at least not segfault when generating them.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4562>
This commit is contained in:
Eric Anholt 2020-04-21 15:30:49 -07:00 • committed by Marge Bot
parent fd8f3b62a4
commit f91e49ee29
1 changed files with 3 additions and 0 deletions
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src/freedreno/ir3/ir3_nir_lower_tess.c
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@ -524,6 +524,9 @@ emit_tess_epilouge(nir_builder *b, struct state *state)
nir_ssa_def *tessfactor_address = nir_load_tess_factor_base_ir3(b);
nir_ssa_def *levels[2];
if (!state->outer_levels[0])
return;
/* Then emit the epilogue that actually writes out the tessellation levels
* to the BOs.
*/