129 строки
4.8 KiB
C++
129 строки
4.8 KiB
C++
/*
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* Copyright 2018 Arm Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef SPIRV_CROSS_PARSED_IR_HPP
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#define SPIRV_CROSS_PARSED_IR_HPP
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#include "spirv_common.hpp"
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#include <stdint.h>
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#include <unordered_map>
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#include <vector>
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namespace spirv_cross
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{
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// This data structure holds all information needed to perform cross-compilation and reflection.
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// It is the output of the Parser, but any implementation could create this structure.
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// It is intentionally very "open" and struct-like with some helper functions to deal with decorations.
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// Parser is the reference implementation of how this data structure should be filled in.
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class ParsedIR
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{
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public:
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// Resizes ids, meta and block_meta.
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void set_id_bounds(uint32_t bounds);
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// The raw SPIR-V, instructions and opcodes refer to this by offset + count.
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std::vector<uint32_t> spirv;
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// Holds various data structures which inherit from IVariant.
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std::vector<Variant> ids;
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// Various meta data for IDs, decorations, names, etc.
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std::vector<Meta> meta;
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// Declared capabilities and extensions in the SPIR-V module.
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// Not really used except for reflection at the moment.
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std::vector<spv::Capability> declared_capabilities;
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std::vector<std::string> declared_extensions;
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// Meta data about blocks. The cross-compiler needs to query if a block is either of these types.
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// It is a bitset as there can be more than one tag per block.
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enum BlockMetaFlagBits
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{
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BLOCK_META_LOOP_HEADER_BIT = 1 << 0,
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BLOCK_META_CONTINUE_BIT = 1 << 1,
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BLOCK_META_LOOP_MERGE_BIT = 1 << 2,
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BLOCK_META_SELECTION_MERGE_BIT = 1 << 3,
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BLOCK_META_MULTISELECT_MERGE_BIT = 1 << 4
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};
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using BlockMetaFlags = uint8_t;
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std::vector<BlockMetaFlags> block_meta;
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std::unordered_map<uint32_t, uint32_t> continue_block_to_loop_header;
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// Normally, we'd stick SPIREntryPoint in ids array, but it conflicts with SPIRFunction.
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// Entry points can therefore be seen as some sort of meta structure.
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std::unordered_map<uint32_t, SPIREntryPoint> entry_points;
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uint32_t default_entry_point = 0;
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struct Source
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{
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uint32_t version = 0;
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bool es = false;
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bool known = false;
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bool hlsl = false;
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Source() = default;
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};
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Source source;
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// Decoration handling methods.
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// Can be useful for simple "raw" reflection.
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// However, most members are here because the Parser needs most of these,
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// and might as well just have the whole suite of decoration/name handling in one place.
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void set_name(uint32_t id, const std::string &name);
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const std::string &get_name(uint32_t id) const;
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void set_decoration(uint32_t id, spv::Decoration decoration, uint32_t argument = 0);
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void set_decoration_string(uint32_t id, spv::Decoration decoration, const std::string &argument);
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bool has_decoration(uint32_t id, spv::Decoration decoration) const;
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uint32_t get_decoration(uint32_t id, spv::Decoration decoration) const;
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const std::string &get_decoration_string(uint32_t id, spv::Decoration decoration) const;
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const Bitset &get_decoration_bitset(uint32_t id) const;
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void unset_decoration(uint32_t id, spv::Decoration decoration);
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// Decoration handling methods (for members of a struct).
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void set_member_name(uint32_t id, uint32_t index, const std::string &name);
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const std::string &get_member_name(uint32_t id, uint32_t index) const;
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void set_member_decoration(uint32_t id, uint32_t index, spv::Decoration decoration, uint32_t argument = 0);
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void set_member_decoration_string(uint32_t id, uint32_t index, spv::Decoration decoration,
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const std::string &argument);
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uint32_t get_member_decoration(uint32_t id, uint32_t index, spv::Decoration decoration) const;
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const std::string &get_member_decoration_string(uint32_t id, uint32_t index, spv::Decoration decoration) const;
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bool has_member_decoration(uint32_t id, uint32_t index, spv::Decoration decoration) const;
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const Bitset &get_member_decoration_bitset(uint32_t id, uint32_t index) const;
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void unset_member_decoration(uint32_t id, uint32_t index, spv::Decoration decoration);
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void mark_used_as_array_length(uint32_t id);
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uint32_t increase_bound_by(uint32_t count);
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Bitset get_buffer_block_flags(const SPIRVariable &var) const;
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private:
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template <typename T>
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T &get(uint32_t id)
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{
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return variant_get<T>(ids[id]);
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}
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template <typename T>
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const T &get(uint32_t id) const
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{
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return variant_get<T>(ids[id]);
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}
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};
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} // namespace spirv_cross
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#endif |