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Diffstat (limited to 'src/3rdparty/SPIRV-Cross/spirv_hlsl.hpp')
| -rw-r--r-- | src/3rdparty/SPIRV-Cross/spirv_hlsl.hpp | 227 |
1 files changed, 227 insertions, 0 deletions
diff --git a/src/3rdparty/SPIRV-Cross/spirv_hlsl.hpp b/src/3rdparty/SPIRV-Cross/spirv_hlsl.hpp new file mode 100644 index 0000000..12b8ae1 --- /dev/null +++ b/src/3rdparty/SPIRV-Cross/spirv_hlsl.hpp @@ -0,0 +1,227 @@ +/* + * Copyright 2016-2019 Robert Konrad + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef SPIRV_HLSL_HPP +#define SPIRV_HLSL_HPP + +#include "spirv_glsl.hpp" +#include <utility> +#include <vector> + +namespace spirv_cross +{ +// Interface which remaps vertex inputs to a fixed semantic name to make linking easier. +struct HLSLVertexAttributeRemap +{ + uint32_t location; + std::string semantic; +}; +// Specifying a root constant (d3d12) or push constant range (vulkan). +// +// `start` and `end` denotes the range of the root constant in bytes. +// Both values need to be multiple of 4. +struct RootConstants +{ + uint32_t start; + uint32_t end; + + uint32_t binding; + uint32_t space; +}; + +class CompilerHLSL : public CompilerGLSL +{ +public: + struct Options + { + uint32_t shader_model = 30; // TODO: map ps_4_0_level_9_0,... somehow + + // Allows the PointSize builtin, and ignores it, as PointSize is not supported in HLSL. + bool point_size_compat = false; + + // Allows the PointCoord builtin, returns float2(0.5, 0.5), as PointCoord is not supported in HLSL. + bool point_coord_compat = false; + + // If true, the backend will assume that VertexIndex and InstanceIndex will need to apply + // a base offset, and you will need to fill in a cbuffer with offsets. + // Set to false if you know you will never use base instance or base vertex + // functionality as it might remove an internal cbuffer. + bool support_nonzero_base_vertex_base_instance = false; + }; + + explicit CompilerHLSL(std::vector<uint32_t> spirv_) + : CompilerGLSL(move(spirv_)) + { + } + + CompilerHLSL(const uint32_t *ir_, size_t size) + : CompilerGLSL(ir_, size) + { + } + + explicit CompilerHLSL(const ParsedIR &ir_) + : CompilerGLSL(ir_) + { + } + + explicit CompilerHLSL(ParsedIR &&ir_) + : CompilerGLSL(std::move(ir_)) + { + } + + const Options &get_hlsl_options() const + { + return hlsl_options; + } + + void set_hlsl_options(const Options &opts) + { + hlsl_options = opts; + } + + // Optionally specify a custom root constant layout. + // + // Push constants ranges will be split up according to the + // layout specified. + void set_root_constant_layouts(std::vector<RootConstants> layout); + + // Compiles and remaps vertex attributes at specific locations to a fixed semantic. + // The default is TEXCOORD# where # denotes location. + // Matrices are unrolled to vectors with notation ${SEMANTIC}_#, where # denotes row. + // $SEMANTIC is either TEXCOORD# or a semantic name specified here. + void add_vertex_attribute_remap(const HLSLVertexAttributeRemap &vertex_attributes); + std::string compile() override; + + // This is a special HLSL workaround for the NumWorkGroups builtin. + // This does not exist in HLSL, so the calling application must create a dummy cbuffer in + // which the application will store this builtin. + // The cbuffer layout will be: + // cbuffer SPIRV_Cross_NumWorkgroups : register(b#, space#) { uint3 SPIRV_Cross_NumWorkgroups_count; }; + // This must be called before compile(). + // The function returns 0 if NumWorkGroups builtin is not statically used in the shader from the current entry point. + // If non-zero, this returns the variable ID of a cbuffer which corresponds to + // the cbuffer declared above. By default, no binding or descriptor set decoration is set, + // so the calling application should declare explicit bindings on this ID before calling compile(). + uint32_t remap_num_workgroups_builtin(); + +private: + std::string type_to_glsl(const SPIRType &type, uint32_t id = 0) override; + std::string image_type_hlsl(const SPIRType &type, uint32_t id); + std::string image_type_hlsl_modern(const SPIRType &type, uint32_t id); + std::string image_type_hlsl_legacy(const SPIRType &type, uint32_t id); + void emit_function_prototype(SPIRFunction &func, const Bitset &return_flags) override; + void emit_hlsl_entry_point(); + void emit_header() override; + void emit_resources(); + void emit_interface_block_globally(const SPIRVariable &type); + void emit_interface_block_in_struct(const SPIRVariable &type, std::unordered_set<uint32_t> &active_locations); + void emit_builtin_inputs_in_struct(); + void emit_builtin_outputs_in_struct(); + void emit_texture_op(const Instruction &i) override; + void emit_instruction(const Instruction &instruction) override; + void emit_glsl_op(uint32_t result_type, uint32_t result_id, uint32_t op, const uint32_t *args, + uint32_t count) override; + void emit_buffer_block(const SPIRVariable &type) override; + void emit_push_constant_block(const SPIRVariable &var) override; + void emit_uniform(const SPIRVariable &var) override; + void emit_modern_uniform(const SPIRVariable &var); + void emit_legacy_uniform(const SPIRVariable &var); + void emit_specialization_constants_and_structs(); + void emit_composite_constants(); + void emit_fixup() override; + std::string builtin_to_glsl(spv::BuiltIn builtin, spv::StorageClass storage) override; + std::string layout_for_member(const SPIRType &type, uint32_t index) override; + std::string to_interpolation_qualifiers(const Bitset &flags) override; + std::string bitcast_glsl_op(const SPIRType &result_type, const SPIRType &argument_type) override; + std::string to_func_call_arg(uint32_t id) override; + std::string to_sampler_expression(uint32_t id); + std::string to_resource_binding(const SPIRVariable &var); + std::string to_resource_binding_sampler(const SPIRVariable &var); + std::string to_resource_register(char space, uint32_t binding, uint32_t set); + void emit_sampled_image_op(uint32_t result_type, uint32_t result_id, uint32_t image_id, uint32_t samp_id) override; + void emit_access_chain(const Instruction &instruction); + void emit_load(const Instruction &instruction); + std::string read_access_chain(const SPIRAccessChain &chain); + void write_access_chain(const SPIRAccessChain &chain, uint32_t value); + void emit_store(const Instruction &instruction); + void emit_atomic(const uint32_t *ops, uint32_t length, spv::Op op); + void emit_subgroup_op(const Instruction &i) override; + void emit_block_hints(const SPIRBlock &block) override; + + void emit_struct_member(const SPIRType &type, uint32_t member_type_id, uint32_t index, const std::string &qualifier, + uint32_t base_offset = 0) override; + + const char *to_storage_qualifiers_glsl(const SPIRVariable &var) override; + void replace_illegal_names() override; + + Options hlsl_options; + bool requires_op_fmod = false; + bool requires_fp16_packing = false; + bool requires_explicit_fp16_packing = false; + bool requires_unorm8_packing = false; + bool requires_snorm8_packing = false; + bool requires_unorm16_packing = false; + bool requires_snorm16_packing = false; + bool requires_bitfield_insert = false; + bool requires_bitfield_extract = false; + bool requires_inverse_2x2 = false; + bool requires_inverse_3x3 = false; + bool requires_inverse_4x4 = false; + uint64_t required_textureSizeVariants = 0; + void require_texture_query_variant(const SPIRType &type); + + enum TextureQueryVariantDim + { + Query1D = 0, + Query1DArray, + Query2D, + Query2DArray, + Query3D, + QueryBuffer, + QueryCube, + QueryCubeArray, + Query2DMS, + Query2DMSArray, + QueryDimCount + }; + + enum TextureQueryVariantType + { + QueryTypeFloat = 0, + QueryTypeInt = 16, + QueryTypeUInt = 32, + QueryTypeCount = 3 + }; + + void emit_builtin_variables(); + bool require_output = false; + bool require_input = false; + std::vector<HLSLVertexAttributeRemap> remap_vertex_attributes; + + uint32_t type_to_consumed_locations(const SPIRType &type) const; + + void emit_io_block(const SPIRVariable &var); + std::string to_semantic(uint32_t vertex_location); + + uint32_t num_workgroups_builtin = 0; + + // Custom root constant layout, which should be emitted + // when translating push constant ranges. + std::vector<RootConstants> root_constants_layout; +}; +} // namespace spirv_cross + +#endif |