forked from suyu/suyu
133 lines
3.2 KiB
C++
133 lines
3.2 KiB
C++
// Copyright 2018 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <array>
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#include <string>
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#include <type_traits>
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#include <utility>
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#include <vector>
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#include "common/common_types.h"
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#include "common/hash.h"
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namespace GLShader {
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constexpr size_t MAX_PROGRAM_CODE_LENGTH{0x1000};
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using ProgramCode = std::array<u64, MAX_PROGRAM_CODE_LENGTH>;
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class ConstBufferEntry {
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using Maxwell = Tegra::Engines::Maxwell3D::Regs;
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public:
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void MarkAsUsed(unsigned index, unsigned offset, Maxwell::ShaderStage stage) {
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is_used = true;
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this->index = index;
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this->stage = stage;
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max_offset = std::max(max_offset, offset);
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}
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bool IsUsed() const {
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return is_used;
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}
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unsigned GetIndex() const {
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return index;
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}
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unsigned GetSize() const {
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return max_offset + 1;
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}
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std::string GetName() const {
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return BufferBaseNames[static_cast<size_t>(stage)] + std::to_string(index);
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}
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private:
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static constexpr std::array<const char*, Maxwell::MaxShaderStage> BufferBaseNames = {
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"buffer_vs_c", "buffer_tessc_c", "buffer_tesse_c", "buffer_gs_c", "buffer_fs_c",
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};
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bool is_used{};
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unsigned index{};
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unsigned max_offset{};
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Maxwell::ShaderStage stage;
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};
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struct ShaderEntries {
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std::vector<ConstBufferEntry> const_buffer_entries;
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};
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using ProgramResult = std::pair<std::string, ShaderEntries>;
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struct ShaderSetup {
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ShaderSetup(ProgramCode&& program_code) : program_code(std::move(program_code)) {}
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ProgramCode program_code;
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bool program_code_hash_dirty = true;
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u64 GetProgramCodeHash() {
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if (program_code_hash_dirty) {
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program_code_hash = Common::ComputeHash64(&program_code, sizeof(program_code));
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program_code_hash_dirty = false;
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}
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return program_code_hash;
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}
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private:
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u64 program_code_hash{};
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};
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struct MaxwellShaderConfigCommon {
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void Init(ShaderSetup& setup) {
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program_hash = setup.GetProgramCodeHash();
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}
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u64 program_hash;
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};
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struct MaxwellVSConfig : Common::HashableStruct<MaxwellShaderConfigCommon> {
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explicit MaxwellVSConfig(ShaderSetup& setup) {
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state.Init(setup);
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}
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};
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struct MaxwellFSConfig : Common::HashableStruct<MaxwellShaderConfigCommon> {
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explicit MaxwellFSConfig(ShaderSetup& setup) {
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state.Init(setup);
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}
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};
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/**
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* Generates the GLSL vertex shader program source code for the given VS program
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* @returns String of the shader source code
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*/
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ProgramResult GenerateVertexShader(const ShaderSetup& setup, const MaxwellVSConfig& config);
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/**
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* Generates the GLSL fragment shader program source code for the given FS program
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* @returns String of the shader source code
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*/
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ProgramResult GenerateFragmentShader(const ShaderSetup& setup, const MaxwellFSConfig& config);
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} // namespace GLShader
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namespace std {
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template <>
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struct hash<GLShader::MaxwellVSConfig> {
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size_t operator()(const GLShader::MaxwellVSConfig& k) const {
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return k.Hash();
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}
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};
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template <>
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struct hash<GLShader::MaxwellFSConfig> {
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size_t operator()(const GLShader::MaxwellFSConfig& k) const {
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return k.Hash();
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}
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};
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} // namespace std
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