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ac/nir/ngg: Implement packed 16-bit GS outputs in non-dedicated slots.

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Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28765>
This commit is contained in:
Timur Kristóf
2024-04-14 23:40:33 +02:00
parent 0f85f9060b
commit 4a11323513
1 changed files with 23 additions and 5 deletions
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src/amd/common/ac_nir_lower_ngg.c
+23 -5
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@@ -2835,14 +2835,32 @@ lower_ngg_gs_store_output(nir_builder *b, nir_intrinsic_instr *intrin, lower_ngg
info->stream |= stream << (component * 2);
info->components_mask |= BITFIELD_BIT(component);
/* If type is set multiple times, the value must be same. */
assert(type[component] == nir_type_invalid || type[component] == src_type);
type[component] = src_type;
/* Assume we have called nir_lower_io_to_temporaries which store output in the
* same block as EmitVertex, so we don't need to use nir_variable for outputs.
*/
output[component] = nir_channel(b, store_val, comp);
nir_def *store_component = nir_channel(b, store_val, comp);
/* 16-bit output stored in a normal varying slot that isn't a dedicated 16-bit slot. */
const bool non_dedicated_16bit = location < VARYING_SLOT_VAR0_16BIT && store_val->bit_size == 16;
if (non_dedicated_16bit) {
if (io_sem.high_16bits) {
nir_def *lo = output[component] ? nir_unpack_32_2x16_split_x(b, output[component]) : nir_imm_intN_t(b, 0, 16);
output[component] = nir_pack_32_2x16_split(b, lo, store_component);
} else {
nir_def *hi = output[component] ? nir_unpack_32_2x16_split_y(b, output[component]) : nir_imm_intN_t(b, 0, 16);
output[component] = nir_pack_32_2x16_split(b, store_component, hi);
}
/* Don't care about what type was set first, we mark this as a 32-bit unsigned. */
type[component] = nir_type_uint32;
} else {
output[component] = store_component;
/* If type is set multiple times, the value must be same. */
assert(type[component] == nir_type_invalid || type[component] == src_type);
type[component] = src_type;
}
}
nir_instr_remove(&intrin->instr);