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r600/sfn: Make sure all components are usable when lowering TF inputs

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Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18983>
This commit is contained in:
Gert Wollny 2022-10-05 16:48:27 +02:00
parent a34003d472
commit 5cd3e39503
1 changed files with 10 additions and 2 deletions
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12
src/gallium/drivers/r600/sfn/sfn_nir_lower_tess_io.cpp
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@ -412,8 +412,16 @@ r600_lower_tess_io_impl(nir_builder *b, nir_instr *instr, enum pipe_prim_type pr
nir_ssa_dest_init(&tf->instr, &tf->dest,
tf->num_components, 32, NULL);
nir_builder_instr_insert(b, &tf->instr);
nir_ssa_def_rewrite_uses(&op->dest.ssa, &tf->dest.ssa);
if (ncomps < 4) {
auto undef = nir_ssa_undef(b, 1, 32);
nir_ssa_def *srcs[4] = {undef, undef, undef, undef};
for (unsigned i = 0; i < ncomps; ++i)
srcs[i] = nir_channel(b, &tf->dest.ssa, i);
auto help = nir_vec(b, srcs, 4);
nir_ssa_def_rewrite_uses(&op->dest.ssa, help);
} else {
nir_ssa_def_rewrite_uses(&op->dest.ssa, &tf->dest.ssa);
}
nir_instr_remove(instr);
return true;
}