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Code Issues 9 Packages Projects Releases Wiki Activity

pan/bi: Support fragment store_output() with a non-zero offset 

Fragment color outputs can be defined as a vec4 array. As long as the
indexing is not dynamic, we can add the constant offset passed to
the store_output() intrinsic to the RT index we extracted from the
location.

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Mary Guillemard <mary.guillemard@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28417>
This commit is contained in:
Boris Brezillon 2024-03-27 14:22:18 +01:00 committed by Marge Bot
parent df4e3e4777
commit 303f04d346
1 changed files with 10 additions and 0 deletions
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10
src/panfrost/compiler/bifrost_compile.c
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@ -954,6 +954,16 @@ bi_emit_fragment_out(bi_builder *b, nir_intrinsic_instr *instr)
bi_index color = bi_src_color_vec4(b, &instr->src[0], T);
bi_index color2 = dual ? bi_src_color_vec4(b, &instr->src[4], T2) : bi_null();
if (instr->intrinsic == nir_intrinsic_store_output &&
loc >= FRAG_RESULT_DATA0 && loc <= FRAG_RESULT_DATA7) {
assert(nir_src_is_const(instr->src[1]) && "no indirect outputs");
unsigned rt_offs = nir_src_as_uint(instr->src[1]);
assert(rt + rt_offs < 8 && "RT not in the [0-7] range");
rt += rt_offs;
}
/* Explicit copy since BLEND inputs are precoloured to R0-R3,
* TODO: maybe schedule around this or implement in RA as a
* spill */