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st/mesa: use IO intrinsics in st_nir_lower_position_invariant

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Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32779>
This commit is contained in:
Marek Olšák
2024-12-24 10:48:32 -05:00
committed by Marge Bot
parent 02b7396568
commit 40848ba97e
1 changed files with 22 additions and 6 deletions
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28
src/mesa/state_tracker/st_nir_lower_position_invariant.c
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@@ -33,9 +33,18 @@ st_nir_lower_position_invariant(struct nir_shader *s, bool aos,
} }
nir_def *result; nir_def *result;
nir_def *in_pos = nir_load_var(&b, nir_get_variable_with_location(s, nir_var_shader_in, nir_def *in_pos;
VERT_ATTRIB_POS, glsl_vec4_type()));
s->info.inputs_read |= VERT_BIT_POS; if (s->info.io_lowered) {
in_pos = nir_load_input(&b, 4, 32, nir_imm_int(&b, 0),
.io_semantics.location = VERT_ATTRIB_POS);
} else {
in_pos = nir_load_var(&b, nir_get_variable_with_location(s, nir_var_shader_in,
VERT_ATTRIB_POS,
glsl_vec4_type()));
s->info.inputs_read |= VERT_BIT_POS;
}
if (aos) { if (aos) {
nir_def *chans[4]; nir_def *chans[4];
for (int i = 0; i < 4; i++) for (int i = 0; i < 4; i++)
@@ -46,9 +55,16 @@ st_nir_lower_position_invariant(struct nir_shader *s, bool aos,
for (int i = 1; i < 4; i++) for (int i = 1; i < 4; i++)
result = nir_fmad(&b, mvp[i], nir_channel(&b, in_pos, i), result); result = nir_fmad(&b, mvp[i], nir_channel(&b, in_pos, i), result);
} }
nir_store_var(&b, nir_get_variable_with_location(s, nir_var_shader_out,
VARYING_SLOT_POS, glsl_vec4_type()), result, 0xf); if (s->info.io_lowered) {
s->info.outputs_written |= VARYING_BIT_POS; nir_store_output(&b, result, nir_imm_int(&b, 0),
.io_semantics.location = VARYING_SLOT_POS);
} else {
nir_store_var(&b, nir_get_variable_with_location(s, nir_var_shader_out,
VARYING_SLOT_POS,
glsl_vec4_type()), result, 0xf);
s->info.outputs_written |= VARYING_BIT_POS;
}
nir_metadata_preserve(b.impl, nir_metadata_control_flow); nir_metadata_preserve(b.impl, nir_metadata_control_flow);