| /* Copyright (c) 2021 The Khronos Group Inc. |
| * |
| * 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. |
| * |
| * Author: Spencer Fricke <s.fricke@samsung.com> |
| * |
| * The Shader Module file is in charge of all things around creating and parsing an internal representation of a shader module |
| */ |
| #ifndef VULKAN_SHADER_MODULE_H |
| #define VULKAN_SHADER_MODULE_H |
| |
| #include <cassert> |
| #include <cstdlib> |
| #include <cstring> |
| #include <unordered_map> |
| #include <vector> |
| |
| #include "base_node.h" |
| #include "pipeline_state.h" |
| #include <spirv/unified1/spirv.hpp> |
| #include "spirv-tools/optimizer.hpp" |
| |
| // A forward iterator over spirv instructions. Provides easy access to len, opcode, and content words |
| // without the caller needing to care too much about the physical SPIRV module layout. |
| struct spirv_inst_iter { |
| std::vector<uint32_t>::const_iterator zero; |
| std::vector<uint32_t>::const_iterator it; |
| |
| uint32_t len() const { |
| auto result = *it >> 16; |
| assert(result > 0); |
| return result; |
| } |
| |
| uint32_t opcode() const { return *it & 0x0ffffu; } |
| |
| uint32_t const &word(unsigned n) const { |
| assert(n < len()); |
| return it[n]; |
| } |
| |
| uint32_t offset() const { return (uint32_t)(it - zero); } |
| |
| spirv_inst_iter() {} |
| |
| spirv_inst_iter(std::vector<uint32_t>::const_iterator zero, std::vector<uint32_t>::const_iterator it) : zero(zero), it(it) {} |
| |
| bool operator==(spirv_inst_iter const &other) const { return it == other.it; } |
| |
| bool operator!=(spirv_inst_iter const &other) const { return it != other.it; } |
| |
| spirv_inst_iter operator++(int) { // x++ |
| spirv_inst_iter ii = *this; |
| it += len(); |
| return ii; |
| } |
| |
| spirv_inst_iter operator++() { // ++x; |
| it += len(); |
| return *this; |
| } |
| |
| // The iterator and the value are the same thing. |
| spirv_inst_iter &operator*() { return *this; } |
| spirv_inst_iter const &operator*() const { return *this; } |
| }; |
| |
| // Utils taking a spirv_inst_iter |
| uint32_t GetConstantValue(const spirv_inst_iter &itr); |
| std::vector<uint32_t> FindEntrypointInterfaces(const spirv_inst_iter &entrypoint); |
| |
| enum FORMAT_TYPE { |
| FORMAT_TYPE_FLOAT = 1, // UNORM, SNORM, FLOAT, USCALED, SSCALED, SRGB -- anything we consider float in the shader |
| FORMAT_TYPE_SINT = 2, |
| FORMAT_TYPE_UINT = 4, |
| }; |
| |
| typedef std::pair<unsigned, unsigned> location_t; |
| |
| struct decoration_set { |
| enum { |
| location_bit = 1 << 0, |
| patch_bit = 1 << 1, |
| relaxed_precision_bit = 1 << 2, |
| block_bit = 1 << 3, |
| buffer_block_bit = 1 << 4, |
| component_bit = 1 << 5, |
| input_attachment_index_bit = 1 << 6, |
| descriptor_set_bit = 1 << 7, |
| binding_bit = 1 << 8, |
| nonwritable_bit = 1 << 9, |
| builtin_bit = 1 << 10, |
| }; |
| static constexpr uint32_t kInvalidValue = std::numeric_limits<uint32_t>::max(); |
| |
| uint32_t flags = 0; |
| uint32_t location = kInvalidValue; |
| uint32_t component = 0; |
| uint32_t input_attachment_index = 0; |
| uint32_t descriptor_set = 0; |
| uint32_t binding = 0; |
| uint32_t builtin = kInvalidValue; |
| uint32_t spec_const_id = kInvalidValue; |
| |
| void merge(decoration_set const &other); |
| |
| void add(uint32_t decoration, uint32_t value); |
| }; |
| |
| struct function_set { |
| unsigned id; |
| unsigned offset; |
| unsigned length; |
| std::unordered_multimap<uint32_t, uint32_t> op_lists; // key: spv::Op, value: offset |
| |
| function_set() : id(0), offset(0), length(0) {} |
| }; |
| |
| struct builtin_set { |
| uint32_t offset; // offset to instruction (OpDecorate or OpMemberDecorate) |
| spv::BuiltIn builtin; |
| |
| builtin_set(uint32_t offset, spv::BuiltIn builtin) : offset(offset), builtin(builtin) {} |
| }; |
| |
| struct shader_struct_member { |
| uint32_t offset; |
| uint32_t size; // A scalar size or a struct size. Not consider array |
| std::vector<uint32_t> array_length_hierarchy; // multi-dimensional array, mat, vec. mat is combined with 2 array. |
| // e.g :array[2] -> {2}, array[2][3][4] -> {2,3,4}, mat4[2] ->{2,4,4}, |
| std::vector<uint32_t> array_block_size; // When index increases, how many data increases. |
| // e.g : array[2][3][4] -> {12,4,1}, it means if the first index increases one, the |
| // array gets 12 data. If the second index increases one, the array gets 4 data. |
| std::vector<shader_struct_member> struct_members; // If the data is not a struct, it's empty. |
| shader_struct_member *root; |
| |
| shader_struct_member() : offset(0), size(0), root(nullptr) {} |
| |
| bool IsUsed() const { |
| if (!root) return false; |
| return root->used_bytes.size() ? true : false; |
| } |
| |
| std::vector<uint8_t> *GetUsedbytes() const { |
| if (!root) return nullptr; |
| return &root->used_bytes; |
| } |
| |
| std::string GetLocationDesc(uint32_t index_used_bytes) const; |
| |
| private: |
| std::vector<uint8_t> used_bytes; // This only works for root. 0: not used. 1: used. The totally array * size. |
| }; |
| |
| struct shader_module_used_operators; |
| |
| struct SHADER_MODULE_STATE : public BASE_NODE { |
| // The spirv image itself |
| std::vector<uint32_t> words; |
| // A mapping of <id> to the first word of its def. this is useful because walking type |
| // trees, constant expressions, etc requires jumping all over the instruction stream. |
| layer_data::unordered_map<unsigned, unsigned> def_index; |
| layer_data::unordered_map<unsigned, decoration_set> decorations; |
| // <Specialization constant ID -> target ID> mapping |
| layer_data::unordered_map<uint32_t, uint32_t> spec_const_map; |
| // Find all decoration instructions to prevent relooping module later - many checks need this info |
| std::vector<spirv_inst_iter> decoration_inst; |
| std::vector<spirv_inst_iter> member_decoration_inst; |
| // Execution are not tied to an entry point and are their own mapping tied to entry point function |
| // [OpEntryPoint function <id> operand] : [Execution Mode Instruction list] |
| layer_data::unordered_map<uint32_t, std::vector<spirv_inst_iter>> execution_mode_inst; |
| // both OpDecorate and OpMemberDecorate builtin instructions |
| std::vector<builtin_set> builtin_decoration_list; |
| struct EntryPoint { |
| uint32_t offset; // into module to get OpEntryPoint instruction |
| VkShaderStageFlagBits stage; |
| std::unordered_multimap<unsigned, unsigned> decorate_list; // key: spv::Op, value: offset |
| std::vector<function_set> function_set_list; |
| shader_struct_member push_constant_used_in_shader; |
| }; |
| // entry point is not unqiue to single value so need multimap |
| std::unordered_multimap<std::string, EntryPoint> entry_points; |
| bool multiple_entry_points{false}; |
| bool has_valid_spirv; |
| bool has_specialization_constants{false}; |
| uint32_t gpu_validation_shader_id; |
| |
| SHADER_MODULE_STATE(VkShaderModuleCreateInfo const *pCreateInfo, VkShaderModule shaderModule, spv_target_env env, |
| uint32_t unique_shader_id) |
| : BASE_NODE(shaderModule, kVulkanObjectTypeShaderModule), |
| words(), |
| def_index(), |
| has_valid_spirv(true), |
| gpu_validation_shader_id(unique_shader_id) { |
| words = PreprocessShaderBinary((uint32_t *)pCreateInfo->pCode, pCreateInfo->codeSize, env); |
| BuildDefIndex(); |
| } |
| |
| SHADER_MODULE_STATE() |
| : BASE_NODE(static_cast<VkShaderModule>(VK_NULL_HANDLE), kVulkanObjectTypeShaderModule), |
| has_valid_spirv(false), |
| gpu_validation_shader_id(UINT32_MAX) {} |
| |
| VkShaderModule vk_shader_module() const { return handle_.Cast<VkShaderModule>(); } |
| |
| decoration_set get_decorations(unsigned id) const { |
| // return the actual decorations for this id, or a default set. |
| auto it = decorations.find(id); |
| if (it != decorations.end()) return it->second; |
| return decoration_set(); |
| } |
| |
| // Expose begin() / end() to enable range-based for |
| spirv_inst_iter begin() const { return spirv_inst_iter(words.begin(), words.begin() + 5); } // First insn |
| spirv_inst_iter end() const { return spirv_inst_iter(words.begin(), words.end()); } // Just past last insn |
| // Given an offset into the module, produce an iterator there. |
| spirv_inst_iter at(unsigned offset) const { return spirv_inst_iter(words.begin(), words.begin() + offset); } |
| |
| // Gets an iterator to the definition of an id |
| spirv_inst_iter get_def(unsigned id) const { |
| auto it = def_index.find(id); |
| if (it == def_index.end()) { |
| return end(); |
| } |
| return at(it->second); |
| } |
| |
| // Used to populate the shader module object |
| void BuildDefIndex(); |
| std::vector<uint32_t> PreprocessShaderBinary(uint32_t *src_binary, size_t binary_size, spv_target_env env); |
| |
| // Used to get human readable strings for error messages |
| void DescribeTypeInner(std::ostringstream &ss, unsigned type) const; |
| std::string DescribeType(unsigned type) const; |
| |
| layer_data::unordered_set<uint32_t> MarkAccessibleIds(spirv_inst_iter entrypoint) const; |
| void ProcessExecutionModes(const spirv_inst_iter &entrypoint, PIPELINE_STATE *pipeline) const; |
| |
| const EntryPoint *FindEntrypointStruct(char const *name, VkShaderStageFlagBits stageBits) const; |
| spirv_inst_iter FindEntrypoint(char const *name, VkShaderStageFlagBits stageBits) const; |
| bool FindLocalSize(const spirv_inst_iter &entrypoint, uint32_t &local_size_x, uint32_t &local_size_y, |
| uint32_t &local_size_z) const; |
| |
| spirv_inst_iter GetConstantDef(unsigned id) const; |
| uint32_t GetConstantValueById(unsigned id) const; |
| int32_t GetShaderResourceDimensionality(const interface_var &resource) const; |
| unsigned GetLocationsConsumedByType(unsigned type, bool strip_array_level) const; |
| unsigned GetComponentsConsumedByType(unsigned type, bool strip_array_level) const; |
| unsigned GetFundamentalType(unsigned type) const; |
| spirv_inst_iter GetStructType(spirv_inst_iter def, bool is_array_of_verts) const; |
| |
| void DefineStructMember(const spirv_inst_iter &it, const std::vector<uint32_t> &memberDecorate_offsets, |
| shader_struct_member &data) const; |
| void RunUsedArray(uint32_t offset, std::vector<uint32_t> array_indices, uint32_t access_chain_word_index, |
| spirv_inst_iter &access_chain_it, const shader_struct_member &data) const; |
| void RunUsedStruct(uint32_t offset, uint32_t access_chain_word_index, spirv_inst_iter &access_chain_it, |
| const shader_struct_member &data) const; |
| void SetUsedStructMember(const uint32_t variable_id, const std::vector<function_set> &function_set_list, |
| const shader_struct_member &data) const; |
| |
| // Push consants |
| void SetPushConstantUsedInShader(); |
| |
| uint32_t DescriptorTypeToReqs(uint32_t type_id) const; |
| |
| bool IsBuiltInWritten(spirv_inst_iter builtin_instr, spirv_inst_iter entrypoint) const; |
| |
| // State tracking helpers for collecting interface information |
| void IsSpecificDescriptorType(const spirv_inst_iter &id_it, bool is_storage_buffer, bool is_check_writable, |
| interface_var &out_interface_var, shader_module_used_operators &used_operators) const; |
| std::vector<std::pair<descriptor_slot_t, interface_var>> CollectInterfaceByDescriptorSlot( |
| layer_data::unordered_set<uint32_t> const &accessible_ids, bool *has_writable_descriptor, |
| bool *has_atomic_descriptor) const; |
| layer_data::unordered_set<uint32_t> CollectWritableOutputLocationinFS(const VkPipelineShaderStageCreateInfo &stage_info) const; |
| bool CollectInterfaceBlockMembers(std::map<location_t, interface_var> *out, bool is_array_of_verts, uint32_t id, |
| uint32_t type_id, bool is_patch, int first_location) const; |
| std::map<location_t, interface_var> CollectInterfaceByLocation(spirv_inst_iter entrypoint, spv::StorageClass sinterface, |
| bool is_array_of_verts) const; |
| std::vector<uint32_t> CollectBuiltinBlockMembers(spirv_inst_iter entrypoint, uint32_t storageClass) const; |
| std::vector<std::pair<uint32_t, interface_var>> CollectInterfaceByInputAttachmentIndex( |
| layer_data::unordered_set<uint32_t> const &accessible_ids) const; |
| |
| uint32_t GetSpecConstantByteSize(uint32_t const_id) const; |
| }; |
| |
| // TODO - Most things below are agnostic of even the shader module and more of pure SPIR-V utils |
| // Stuff like this could be part of a future auto-generated file from the spirv grammar json |
| bool AtomicOperation(uint32_t opcode); |
| bool GroupOperation(uint32_t opcode); |
| |
| #endif // VULKAN_SHADER_MODULE_H |