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nir: scalarize transform feedback info in nir_lower_io_to_scalar

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Reviewed-by: Emma Anholt <emma@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14388>
This commit is contained in:
Marek Olšák
2021-12-19 16:23:42 -05:00
committed by Marge Bot
parent cc5505088b
commit 548b2d47b2
1 changed files with 23 additions and 0 deletions
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src/compiler/nir/nir_lower_io_to_scalar.c
+23
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@@ -141,6 +141,29 @@ lower_store_output_to_scalar(nir_builder *b, nir_intrinsic_instr *intr)
nir_intrinsic_set_src_type(chan_intr, nir_intrinsic_src_type(intr));
set_io_semantics(chan_intr, intr, i);
/* Scalarize transform feedback info. */
unsigned component = nir_intrinsic_component(chan_intr);
for (unsigned c = 0; c <= component; c++) {
nir_io_xfb xfb = c < 2 ? nir_intrinsic_io_xfb(intr) :
nir_intrinsic_io_xfb2(intr);
if (component < c + xfb.out[c % 2].num_components) {
nir_io_xfb scalar_xfb;
memset(&scalar_xfb, 0, sizeof(scalar_xfb));
scalar_xfb.out[component % 2].num_components = 1;
scalar_xfb.out[component % 2].buffer = xfb.out[c % 2].buffer;
scalar_xfb.out[component % 2].offset = xfb.out[c % 2].offset +
component - c;
if (component < 2)
nir_intrinsic_set_io_xfb(chan_intr, scalar_xfb);
else
nir_intrinsic_set_io_xfb2(chan_intr, scalar_xfb);
break;
}
}
/* value */
chan_intr->src[0] = nir_src_for_ssa(nir_channel(b, value, i));
/* offset */