This is a port of "r600g:mask unused source components for SAMPLE"
patch from Vadim Girlin.
---
src/gallium/drivers/r600/r600_llvm.c | 25 ++++++++++++++++++++++++-
1 file changed, 24 insertions(+), 1 deletion(-)
diff --git a/src/gallium/drivers/r600/r600_llvm.c
b/src/gallium/drivers/r600/r600_llvm.c
index 83d7340..a94faf2 100644
--- a/src/gallium/drivers/r600/r600_llvm.c
+++ b/src/gallium/drivers/r600/r600_llvm.c
@@ -429,9 +429,32 @@ static void llvm_emit_tex(
}
}
+ if (emit_data->inst->Instruction.Opcode == TGSI_OPCODE_TEX) {
+ LLVMValueRef Vector[4] = {
+ LLVMBuildExtractElement(gallivm->builder,
emit_data->args[0], lp_build_const_int32(gallivm, 0), ""),
+ LLVMBuildExtractElement(gallivm->builder,
emit_data->args[0], lp_build_const_int32(gallivm, 1), ""),
+ LLVMBuildExtractElement(gallivm->builder,
emit_data->args[0], lp_build_const_int32(gallivm, 2), ""),
+ LLVMBuildExtractElement(gallivm->builder,
emit_data->args[0], lp_build_const_int32(gallivm, 3), ""),
+ };
+ switch (emit_data->inst->Texture.Texture) {
+ case TGSI_TEXTURE_2D:
+ case TGSI_TEXTURE_RECT:
+ Vector[2] = Vector[3] =
LLVMGetUndef(bld_base->base.elem_type);
+ break;
+ case TGSI_TEXTURE_1D:
+ Vector[1] = Vector[2] = Vector[3] =
LLVMGetUndef(bld_base->base.elem_type);
+ break;
+ default:
+ break;
+ }
+ args[0] = lp_build_gather_values(gallivm, Vector, 4);
+ } else {
+ args[0] = emit_data->args[0];
+ }
+
assert(emit_data->arg_count + 2 <= Elements(args));
- for (c = 0; c < emit_data->arg_count; ++c)
+ for (c = 1; c < emit_data->arg_count; ++c)
args[c] = emit_data->args[c];
sampler_src = emit_data->inst->Instruction.NumSrcRegs-1;
--
1.8.1.4
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