r600/llvm: Fix isampleBuffer on preEG

diff --git a/src/gallium/drivers/r600/r600_llvm.c b/src/gallium/drivers/r600/r600_llvm.c
index d7fa5f8..5afe3cb 100644 (file)
--- a/src/gallium/drivers/r600/r600_llvm.c
+++ b/src/gallium/drivers/r600/r600_llvm.c
@@ -415,9 +415,22 @@ static void llvm_emit_tex(
                case TGSI_OPCODE_TXQ: {
                        struct radeon_llvm_context * ctx = radeon_llvm_context(bld_base);
                        ctx->uses_tex_buffers = true;
-                       LLVMValueRef offset = lp_build_const_int32(bld_base->base.gallivm, 0);
+                       bool isEgPlus = (ctx->chip_class >= EVERGREEN);
+                       LLVMValueRef offset = lp_build_const_int32(bld_base->base.gallivm,
+                               isEgPlus ? 0 : 1);
                        LLVMValueRef cvecval = llvm_load_const_buffer(bld_base, offset,
                                LLVM_R600_BUFFER_INFO_CONST_BUFFER);
+                       if (!isEgPlus) {
+                               LLVMValueRef maskval[4] = {
+                                       lp_build_const_int32(gallivm, 1),
+                                       lp_build_const_int32(gallivm, 2),
+                                       lp_build_const_int32(gallivm, 3),
+                                       lp_build_const_int32(gallivm, 0),
+                               };
+                               LLVMValueRef mask = LLVMConstVector(maskval, 4);
+                               cvecval = LLVMBuildShuffleVector(gallivm->builder, cvecval, cvecval,
+                                       mask, "");
+                       }
                        emit_data->output[0] = cvecval;
                        return;
                }