fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-01-08 17:10:11 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

radv: add nir_intrinsic_load_sample_positions_amd in the ABI

Browse source 
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18615>
This commit is contained in:
Samuel Pitoiset 2022-09-15 14:55:59 +02:00 • committed by Marge Bot
parent 7f444fc72c
commit 7e433e25c8
1 changed files with 21 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

21
src/amd/vulkan/radv_nir_lower_abi.c
View file

@ -254,6 +254,27 @@ lower_abi_instr(nir_builder *b, nir_instr *instr, void *state)
}
break;
}
case nir_intrinsic_load_sample_positions_amd: {
uint32_t sample_pos_offset = RING_PS_SAMPLE_POSITIONS * 16;
nir_ssa_def *ring_offsets = ac_nir_load_arg(b, &s->args->ac, s->args->ring_offsets);
nir_ssa_def *addr = nir_pack_64_2x32(b, ring_offsets);
nir_ssa_def *sample_id = nir_umin(b, intrin->src[0].ssa, nir_imm_int(b, 7));
nir_ssa_def *offset = nir_ishl_imm(b, sample_id, 3); /* 2 floats containing samplepos.xy */
if (s->pl_key->ps.num_samples == 2) {
sample_pos_offset += 1 << 3;
} else if (s->pl_key->ps.num_samples == 4) {
sample_pos_offset += 3 << 3;
} else {
assert(s->pl_key->ps.num_samples == 8);
sample_pos_offset += 7 << 3;
}
replacement = nir_load_global_amd(b, 2, 32, addr, offset,
.base = sample_pos_offset, .access = ACCESS_NON_WRITEABLE);
break;
}
default:
break;
}