recompiler: switch instance data to storage buffers

src/shader_recompiler/frontend/translate/translate.cpp

@@ -247,6 +247,7 @@ void Translator::EmitFetch(const GcnInst& inst) {
                 .stride = buffer.GetStride(),
                 .num_records = buffer.num_records,
                 .used_types = IR::Type::F32,
+                .is_storage = true, // we may not fit into UBO with large meshes
                 .is_instance_data = true,
             });
             instance_buf_handle = s32(info.buffers.size() - 1);