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ac/nir/tess: Load tess factors from variable when they are passed in registers.

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Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28487>
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Timur Kristóf 2024-03-30 23:05:26 +01:00 • committed by Marge Bot
parent 10acebf88f
commit 08baefe18c
1 changed files with 17 additions and 0 deletions
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17
src/amd/common/ac_nir_lower_tess_io_to_mem.c
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@ -481,6 +481,23 @@ lower_hs_output_load(nir_builder *b,
nir_intrinsic_instr *intrin,
lower_tess_io_state *st)
{
const nir_io_semantics io_sem = nir_intrinsic_io_semantics(intrin);
const bool is_tess_factor = io_sem.location == VARYING_SLOT_TESS_LEVEL_INNER ||
io_sem.location == VARYING_SLOT_TESS_LEVEL_OUTER;
if (is_tess_factor && st->tcs_pass_tessfactors_by_reg) {
const unsigned component = nir_intrinsic_component(intrin);
const unsigned num_components = intrin->def.num_components;
const unsigned bit_size = intrin->def.bit_size;
nir_def *var =
io_sem.location == VARYING_SLOT_TESS_LEVEL_OUTER
? nir_load_var(b, st->tcs_tess_level_outer)
: nir_load_var(b, st->tcs_tess_level_inner);
return nir_extract_bits(b, &var, 1, component * bit_size, num_components, bit_size);
}
nir_def *off = hs_output_lds_offset(b, st, intrin);
return nir_load_shared(b, intrin->def.num_components, intrin->def.bit_size, off);
}