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radv: do not use an user SGPR for the sample position offset

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We know the number of samples at compile time.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
This commit is contained in:
Samuel Pitoiset
2018-06-19 14:25:48 +02:00
parent 20170865db
commit 70c1bee187
3 changed files with 30 additions and 40 deletions
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29
src/amd/vulkan/radv_pipeline.c
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@@ -2710,35 +2710,6 @@ radv_pipeline_generate_multisample_state(struct radeon_cmdbuf *cs,
radeon_set_context_reg(cs, R_028804_DB_EQAA, ms->db_eqaa);
radeon_set_context_reg(cs, R_028A4C_PA_SC_MODE_CNTL_1, ms->pa_sc_mode_cntl_1);
if (pipeline->shaders[MESA_SHADER_FRAGMENT]->info.info.ps.needs_sample_positions) {
uint32_t offset;
struct radv_userdata_info *loc = radv_lookup_user_sgpr(pipeline, MESA_SHADER_FRAGMENT, AC_UD_PS_SAMPLE_POS_OFFSET);
uint32_t base_reg = pipeline->user_data_0[MESA_SHADER_FRAGMENT];
if (loc->sgpr_idx == -1)
return;
assert(loc->num_sgprs == 1);
assert(!loc->indirect);
switch (pipeline->graphics.ms.num_samples) {
default:
offset = 0;
break;
case 2:
offset = 1;
break;
case 4:
offset = 3;
break;
case 8:
offset = 7;
break;
case 16:
offset = 15;
break;
}
radeon_set_sh_reg(cs, base_reg + loc->sgpr_idx * 4, offset);
}
}
static void