mirror of https://github.com/PCSX2/pcsx2.git
113 lines
3.9 KiB
C++
113 lines
3.9 KiB
C++
/* PCSX2 - PS2 Emulator for PCs
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* Copyright (C) 2002-2021 PCSX2 Dev Team
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*
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* PCSX2 is free software: you can redistribute it and/or modify it under the terms
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* of the GNU Lesser General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with PCSX2.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "common/Pcsx2Defs.h"
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#include "common/HashCombine.h"
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#include "common/GL/Program.h"
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#include <cstdio>
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#include <functional>
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#include <optional>
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#include <string>
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#include <string_view>
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#include <unordered_map>
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#include <vector>
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namespace GL
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{
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class ShaderCache
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{
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public:
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using PreLinkCallback = std::function<void(Program&)>;
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ShaderCache();
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~ShaderCache();
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bool Open(bool is_gles, std::string_view base_path, u32 version);
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void Close();
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std::optional<Program> GetProgram(const std::string_view vertex_shader, const std::string_view fragment_shader, const PreLinkCallback& callback = {});
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bool GetProgram(Program* out_program, const std::string_view vertex_shader, const std::string_view fragment_shader, const PreLinkCallback& callback = {});
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std::optional<Program> GetComputeProgram(const std::string_view glsl, const PreLinkCallback& callback = {});
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bool GetComputeProgram(Program* out_program, const std::string_view glsl, const PreLinkCallback& callback = {});
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private:
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static constexpr u32 FILE_VERSION = 1;
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struct CacheIndexKey
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{
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u64 vertex_source_hash_low;
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u64 vertex_source_hash_high;
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u32 vertex_source_length;
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u64 fragment_source_hash_low;
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u64 fragment_source_hash_high;
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u32 fragment_source_length;
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bool operator==(const CacheIndexKey& key) const;
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bool operator!=(const CacheIndexKey& key) const;
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};
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struct CacheIndexEntryHasher
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{
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std::size_t operator()(const CacheIndexKey& e) const noexcept
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{
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std::size_t h = 0;
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HashCombine(h,
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e.vertex_source_hash_low, e.vertex_source_hash_high, e.vertex_source_length,
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e.fragment_source_hash_low, e.fragment_source_hash_high, e.fragment_source_length);
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return h;
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}
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};
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struct CacheIndexData
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{
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u32 file_offset;
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u32 blob_size;
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u32 blob_format;
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};
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using CacheIndex = std::unordered_map<CacheIndexKey, CacheIndexData, CacheIndexEntryHasher>;
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static CacheIndexKey GetCacheKey(const std::string_view& vertex_shader, const std::string_view& fragment_shader);
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std::string GetIndexFileName() const;
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std::string GetBlobFileName() const;
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bool CreateNew(const std::string& index_filename, const std::string& blob_filename);
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bool ReadExisting(const std::string& index_filename, const std::string& blob_filename);
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bool Recreate();
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bool WriteToBlobFile(const CacheIndexKey& key, const std::vector<u8>& prog_data, u32 prog_format);
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std::optional<Program> CompileProgram(const std::string_view& vertex_shader,
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const std::string_view& fragment_shader, const PreLinkCallback& callback,
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bool set_retrievable);
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std::optional<Program> CompileAndAddProgram(const CacheIndexKey& key, const std::string_view& vertex_shader,
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const std::string_view& fragment_shader, const PreLinkCallback& callback);
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std::optional<Program> CompileComputeProgram(const std::string_view& glsl, const PreLinkCallback& callback, bool set_retrievable);
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std::optional<Program> CompileAndAddComputeProgram(const CacheIndexKey& key, const std::string_view& glsl, const PreLinkCallback& callback);
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std::string m_base_path;
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std::FILE* m_index_file = nullptr;
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std::FILE* m_blob_file = nullptr;
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CacheIndex m_index;
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u32 m_version = 0;
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bool m_program_binary_supported = false;
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};
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} // namespace GL
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