From: Marek Olšák <[email protected]>
We always get per-sample input position.
---
src/gallium/drivers/radeonsi/si_shader.c | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/src/gallium/drivers/radeonsi/si_shader.c
b/src/gallium/drivers/radeonsi/si_shader.c
index 5c536f8..d788c41 100644
--- a/src/gallium/drivers/radeonsi/si_shader.c
+++ b/src/gallium/drivers/radeonsi/si_shader.c
@@ -1119,9 +1119,20 @@ static void declare_system_value(
value = get_sample_id(radeon_bld);
break;
- case TGSI_SEMANTIC_SAMPLEPOS:
- value = load_sample_position(radeon_bld,
get_sample_id(radeon_bld));
+ case TGSI_SEMANTIC_SAMPLEPOS: {
+ LLVMValueRef pos[4] = {
+ LLVMGetParam(radeon_bld->main_fn, SI_PARAM_POS_X_FLOAT),
+ LLVMGetParam(radeon_bld->main_fn, SI_PARAM_POS_Y_FLOAT),
+ lp_build_const_float(gallivm, 0),
+ lp_build_const_float(gallivm, 0)
+ };
+ pos[0] = lp_build_emit_llvm_unary(&radeon_bld->soa.bld_base,
+ TGSI_OPCODE_FRC, pos[0]);
+ pos[1] = lp_build_emit_llvm_unary(&radeon_bld->soa.bld_base,
+ TGSI_OPCODE_FRC, pos[1]);
+ value = lp_build_gather_values(gallivm, pos, 4);
break;
+ }
case TGSI_SEMANTIC_SAMPLEMASK:
/* Smoothing isn't MSAA in GL, but it's MSAA in hardware.
--
2.1.4
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