Updated spirv-cross.

3rdparty/spirv-cross/main.cpp

@@ -744,6 +744,7 @@ struct CLIArguments
 	bool hlsl_enable_16bit_types = false;
 	bool hlsl_flatten_matrix_vertex_input_semantics = false;
 	bool hlsl_preserve_structured_buffers = false;
+	bool hlsl_user_semantic = false;
 	HLSLBindingFlags hlsl_binding_flags = 0;
 	bool vulkan_semantics = false;
 	bool flatten_multidimensional_arrays = false;
@@ -852,6 +853,7 @@ static void print_help_hlsl()
 	                "\t[--hlsl-enable-16bit-types]:\n\t\tEnables native use of half/int16_t/uint16_t and ByteAddressBuffer interaction with these types. Requires SM 6.2.\n"
 	                "\t[--hlsl-flatten-matrix-vertex-input-semantics]:\n\t\tEmits matrix vertex inputs with input semantics as if they were independent vectors, e.g. TEXCOORD{2,3,4} rather than matrix form TEXCOORD2_{0,1,2}.\n"
 	                "\t[--hlsl-preserve-structured-buffers]:\n\t\tEmit SturucturedBuffer<T> rather than ByteAddressBuffer. Requires UserTypeGOOGLE to be emitted. Intended for DXC roundtrips.\n"
+	                "\t[--hlsl-user-semantic]:\n\t\tUses UserSemantic decoration to generate vertex input and output semantics.\n"
 	);
 	// clang-format on
 }
@@ -1471,6 +1473,7 @@ static string compile_iteration(const CLIArguments &args, std::vector<uint32_t>
 		hlsl_opts.enable_16bit_types = args.hlsl_enable_16bit_types;
 		hlsl_opts.flatten_matrix_vertex_input_semantics = args.hlsl_flatten_matrix_vertex_input_semantics;
 		hlsl_opts.preserve_structured_buffers = args.hlsl_preserve_structured_buffers;
+		hlsl_opts.user_semantic = args.hlsl_user_semantic;
 		hlsl->set_hlsl_options(hlsl_opts);
 		hlsl->set_resource_binding_flags(args.hlsl_binding_flags);
 		if (args.hlsl_base_vertex_index_explicit_binding)
@@ -1673,6 +1676,7 @@ static int main_inner(int argc, char *argv[])
 	cbs.add("--hlsl-flatten-matrix-vertex-input-semantics",
 	        [&args](CLIParser &) { args.hlsl_flatten_matrix_vertex_input_semantics = true; });
 	cbs.add("--hlsl-preserve-structured-buffers", [&args](CLIParser &) { args.hlsl_preserve_structured_buffers = true; });
+	cbs.add("--hlsl-user-semantic", [&args](CLIParser &) { args.hlsl_user_semantic = true; });
 	cbs.add("--vulkan-semantics", [&args](CLIParser &) { args.vulkan_semantics = true; });
 	cbs.add("-V", [&args](CLIParser &) { args.vulkan_semantics = true; });
 	cbs.add("--flatten-multidimensional-arrays", [&args](CLIParser &) { args.flatten_multidimensional_arrays = true; });

3rdparty/spirv-cross/spirv_common.hpp

@@ -1355,7 +1355,7 @@ struct SPIRConstant : IVariant
 
 	inline float scalar_bf8(uint32_t col = 0, uint32_t row = 0) const
 	{
-		return f16_to_f32(scalar_u8(col, row) << 8);
+		return f16_to_f32(uint16_t(scalar_u8(col, row) << 8));
 	}
 
 	inline float scalar_f32(uint32_t col = 0, uint32_t row = 0) const
@@ -1790,7 +1790,7 @@ struct Meta
 	{
 		std::string alias;
 		std::string qualified_alias;
-		std::string hlsl_semantic;
+		std::string user_semantic;
 		std::string user_type;
 		Bitset decoration_flags;
 		spv::BuiltIn builtin_type = spv::BuiltInMax;

3rdparty/spirv-cross/spirv_cross_c.cpp

@@ -529,6 +529,10 @@ spvc_result spvc_compiler_options_set_uint(spvc_compiler_options options, spvc_c
 	case SPVC_COMPILER_OPTION_HLSL_PRESERVE_STRUCTURED_BUFFERS:
 		options->hlsl.preserve_structured_buffers = value != 0;
 		break;
+
+	case SPVC_COMPILER_OPTION_HLSL_USER_SEMANTIC:
+		options->hlsl.user_semantic = value != 0;
+		break;
 #endif
 
 #if SPIRV_CROSS_C_API_MSL

3rdparty/spirv-cross/spirv_cross_c.h

@@ -40,7 +40,7 @@ extern "C" {
 /* Bumped if ABI or API breaks backwards compatibility. */
 #define SPVC_C_API_VERSION_MAJOR 0
 /* Bumped if APIs or enumerations are added in a backwards compatible way. */
-#define SPVC_C_API_VERSION_MINOR 67
+#define SPVC_C_API_VERSION_MINOR 68
 /* Bumped if internal implementation details change. */
 #define SPVC_C_API_VERSION_PATCH 0
 
@@ -753,6 +753,8 @@ typedef enum spvc_compiler_option
 
 	SPVC_COMPILER_OPTION_MSL_ENABLE_POINT_SIZE_DEFAULT = 93 | SPVC_COMPILER_OPTION_MSL_BIT,
 
+	SPVC_COMPILER_OPTION_HLSL_USER_SEMANTIC = 94 | SPVC_COMPILER_OPTION_HLSL_BIT,
+
 	SPVC_COMPILER_OPTION_INT_MAX = 0x7fffffff
 } spvc_compiler_option;
 

3rdparty/spirv-cross/spirv_cross_parsed_ir.cpp

@@ -366,8 +366,8 @@ void ParsedIR::set_decoration_string(ID id, Decoration decoration, const string
 
 	switch (decoration)
 	{
-	case DecorationHlslSemanticGOOGLE:
-		dec.hlsl_semantic = argument;
+	case DecorationUserSemantic:
+		dec.user_semantic = argument;
 		break;
 
 	case DecorationUserTypeGOOGLE:
@@ -686,8 +686,8 @@ const string &ParsedIR::get_decoration_string(ID id, Decoration decoration) cons
 
 	switch (decoration)
 	{
-	case DecorationHlslSemanticGOOGLE:
-		return dec.hlsl_semantic;
+	case DecorationUserSemantic:
+		return dec.user_semantic;
 
 	case DecorationUserTypeGOOGLE:
 		return dec.user_type;
@@ -747,8 +747,8 @@ void ParsedIR::unset_decoration(ID id, Decoration decoration)
 		dec.spec_id = 0;
 		break;
 
-	case DecorationHlslSemanticGOOGLE:
-		dec.hlsl_semantic.clear();
+	case DecorationUserSemantic:
+		dec.user_semantic.clear();
 		break;
 
 	case DecorationFPRoundingMode:
@@ -843,8 +843,8 @@ void ParsedIR::set_member_decoration_string(TypeID id, uint32_t index, Decoratio
 
 	switch (decoration)
 	{
-	case DecorationHlslSemanticGOOGLE:
-		dec.hlsl_semantic = argument;
+	case DecorationUserSemantic:
+		dec.user_semantic = argument;
 		break;
 
 	default:
@@ -864,8 +864,8 @@ const string &ParsedIR::get_member_decoration_string(TypeID id, uint32_t index,
 
 		switch (decoration)
 		{
-		case DecorationHlslSemanticGOOGLE:
-			return dec.hlsl_semantic;
+		case DecorationUserSemantic:
+			return dec.user_semantic;
 
 		default:
 			return empty_string;
@@ -918,8 +918,8 @@ void ParsedIR::unset_member_decoration(TypeID id, uint32_t index, Decoration dec
 		dec.spec_id = 0;
 		break;
 
-	case DecorationHlslSemanticGOOGLE:
-		dec.hlsl_semantic.clear();
+	case DecorationUserSemantic:
+		dec.user_semantic.clear();
 		break;
 
 	default:

3rdparty/spirv-cross/spirv_hlsl.cpp

@@ -1021,7 +1021,13 @@ void CompilerHLSL::emit_interface_block_member_in_struct(const SPIRVariable &var
 {
 	auto &execution = get_entry_point();
 	auto type = get<SPIRType>(var.basetype);
-	auto semantic = to_semantic(location, execution.model, var.storage);
+
+	std::string semantic;
+	if (hlsl_options.user_semantic && has_member_decoration(var.self, member_index, DecorationUserSemantic))
+		semantic = get_member_decoration_string(var.self, member_index, DecorationUserSemantic);
+	else
+		semantic = to_semantic(location, execution.model, var.storage);
+
 	auto mbr_name = join(to_name(type.self), "_", to_member_name(type, member_index));
 	auto &mbr_type = get<SPIRType>(type.member_types[member_index]);
 
@@ -1080,17 +1086,28 @@ void CompilerHLSL::emit_interface_block_in_struct(const SPIRVariable &var, unord
 	auto name = to_name(var.self);
 	if (use_location_number)
 	{
-		uint32_t location_number;
+		uint32_t location_number = UINT32_MAX;
 
-		// If an explicit location exists, use it with TEXCOORD[N] semantic.
-		// Otherwise, pick a vacant location.
-		if (has_decoration(var.self, DecorationLocation))
-			location_number = get_decoration(var.self, DecorationLocation);
+		std::string semantic;
+		bool has_user_semantic = false;
+
+		if (hlsl_options.user_semantic && has_decoration(var.self, DecorationUserSemantic))
+		{
+			semantic = get_decoration_string(var.self, DecorationUserSemantic);
+			has_user_semantic = true;
+		}
 		else
-			location_number = get_vacant_location();
+		{
+			// If an explicit location exists, use it with TEXCOORD[N] semantic.
+			// Otherwise, pick a vacant location.
+			if (has_decoration(var.self, DecorationLocation))
+				location_number = get_decoration(var.self, DecorationLocation);
+			else
+				location_number = get_vacant_location();
 
-		// Allow semantic remap if specified.
-		auto semantic = to_semantic(location_number, execution.model, var.storage);
+			// Allow semantic remap if specified.
+			semantic = to_semantic(location_number, execution.model, var.storage);
+		}
 
 		if (need_matrix_unroll && type.columns > 1)
 		{
@@ -1104,14 +1121,15 @@ void CompilerHLSL::emit_interface_block_in_struct(const SPIRVariable &var, unord
 				newtype.columns = 1;
 
 				string effective_semantic;
-				if (hlsl_options.flatten_matrix_vertex_input_semantics)
+				if (hlsl_options.flatten_matrix_vertex_input_semantics && !has_user_semantic)
 					effective_semantic = to_semantic(location_number, execution.model, var.storage);
 				else
 					effective_semantic = join(semantic, "_", i);
 
 				statement(to_interpolation_qualifiers(get_decoration_bitset(var.self)),
 				          variable_decl(newtype, join(name, "_", i)), " : ", effective_semantic, ";");
-				active_locations.insert(location_number++);
+				if (location_number != UINT32_MAX)
+					active_locations.insert(location_number++);
 			}
 		}
 		else
@@ -1127,10 +1145,13 @@ void CompilerHLSL::emit_interface_block_in_struct(const SPIRVariable &var, unord
 			statement(to_interpolation_qualifiers(get_decoration_bitset(var.self)), variable_decl(decl_type, name), " : ",
 			          semantic, ";");
 
-			// Structs and arrays should consume more locations.
-			uint32_t consumed_locations = type_to_consumed_locations(decl_type);
-			for (uint32_t i = 0; i < consumed_locations; i++)
-				active_locations.insert(location_number + i);
+			if (location_number != UINT32_MAX)
+			{
+				// Structs and arrays should consume more locations.
+				uint32_t consumed_locations = type_to_consumed_locations(decl_type);
+				for (uint32_t i = 0; i < consumed_locations; i++)
+					active_locations.insert(location_number + i);
+			}
 		}
 	}
 	else

3rdparty/spirv-cross/spirv_hlsl.hpp

@@ -151,6 +151,9 @@ public:
 		// This relies on UserTypeGOOGLE to encode the buffer type either as "structuredbuffer" or "rwstructuredbuffer"
 		// whereas the type can be extended with an optional subtype, e.g. "structuredbuffer:int".
 		bool preserve_structured_buffers = false;
+
+		// Use UserSemantic decoration info (if specified), otherwise use default mechanism (such as add_vertex_attribute_remap or TEXCOORD#).
+		bool user_semantic = false;
 	};
 
 	explicit CompilerHLSL(std::vector<uint32_t> spirv_)

3rdparty/spirv-cross/spirv_parser.cpp

@@ -43,7 +43,7 @@ static bool decoration_is_string(Decoration decoration)
 {
 	switch (decoration)
 	{
-	case DecorationHlslSemanticGOOGLE:
+	case DecorationUserSemantic:
 		return true;
 
 	default: