R600/R700 implementation of tex buffer fetch requires the result of the VFETCH
instruction to be ANDed with R600_BUFFER_INFO_CONST_BUFFER, and the last channel
to be ORed with the same const buffer.
---
src/gallium/drivers/r600/r600_llvm.c | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
diff --git a/src/gallium/drivers/r600/r600_llvm.c
b/src/gallium/drivers/r600/r600_llvm.c
index 34dd3ad..d7fa5f8 100644
--- a/src/gallium/drivers/r600/r600_llvm.c
+++ b/src/gallium/drivers/r600/r600_llvm.c
@@ -427,6 +427,35 @@ static void llvm_emit_tex(
emit_data->output[0] = build_intrinsic(gallivm->builder,
"llvm.R600.load.texbuf",
emit_data->dst_type,
args, 2, LLVMReadNoneAttribute);
+ if (ctx->chip_class >= EVERGREEN)
+ return;
+ ctx->uses_tex_buffers = true;
+ LLVMDumpValue(emit_data->output[0]);
+ emit_data->output[0] =
LLVMBuildBitCast(gallivm->builder,
+ emit_data->output[0],
LLVMVectorType(bld_base->base.int_elem_type, 4),
+ "");
+ LLVMValueRef Mask = llvm_load_const_buffer(bld_base,
+ lp_build_const_int32(gallivm, 0),
+ LLVM_R600_BUFFER_INFO_CONST_BUFFER);
+ Mask = LLVMBuildBitCast(gallivm->builder, Mask,
+ LLVMVectorType(bld_base->base.int_elem_type,
4), "");
+ emit_data->output[0] =
lp_build_emit_llvm_binary(bld_base, TGSI_OPCODE_AND,
+ emit_data->output[0],
+ Mask);
+ LLVMValueRef WComponent =
LLVMBuildExtractElement(gallivm->builder,
+ emit_data->output[0],
lp_build_const_int32(gallivm, 3), "");
+ Mask = llvm_load_const_buffer(bld_base,
lp_build_const_int32(gallivm, 1),
+ LLVM_R600_BUFFER_INFO_CONST_BUFFER);
+ Mask = LLVMBuildExtractElement(gallivm->builder, Mask,
+ lp_build_const_int32(gallivm, 0), "");
+ Mask = LLVMBuildBitCast(gallivm->builder, Mask,
+ bld_base->base.int_elem_type, "");
+ WComponent = lp_build_emit_llvm_binary(bld_base,
TGSI_OPCODE_OR,
+ WComponent, Mask);
+ emit_data->output[0] =
LLVMBuildInsertElement(gallivm->builder,
+ emit_data->output[0], WComponent,
lp_build_const_int32(gallivm, 3), "");
+ emit_data->output[0] =
LLVMBuildBitCast(gallivm->builder,
+ emit_data->output[0],
LLVMVectorType(bld_base->base.elem_type, 4), "");
}
return;
default:
--
1.8.3.1
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