Merge pull request #1065 from KhronosGroup/msvc-2013-workaround

MSVC 2013: Work around another compiler bug with array init.

spirv_msl.cpp

@@ -776,6 +776,10 @@ string CompilerMSL::compile()
 	capture_output_to_buffer = msl_options.capture_output_to_buffer;
 	is_rasterization_disabled = msl_options.disable_rasterization || capture_output_to_buffer;
 
+	// Initialize array here rather than constructor, MSVC 2013 workaround.
+	for (auto &id : next_metal_resource_ids)
+		id = 0;
+
 	fixup_type_alias();
 	replace_illegal_names();
 

spirv_msl.hpp

@@ -593,10 +593,12 @@ protected:
 	};
 
 	std::unordered_map<StageSetBinding, std::pair<MSLResourceBinding, bool>, InternalHasher> resource_bindings;
+
 	uint32_t next_metal_resource_index_buffer = 0;
 	uint32_t next_metal_resource_index_texture = 0;
 	uint32_t next_metal_resource_index_sampler = 0;
-	uint32_t next_metal_resource_ids[kMaxArgumentBuffers] = {};
+	// Intentionally uninitialized, works around MSVC 2013 bug.
+	uint32_t next_metal_resource_ids[kMaxArgumentBuffers];
 
 	uint32_t stage_in_var_id = 0;
 	uint32_t stage_out_var_id = 0;