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// Copyright 2019 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <unordered_map>
#include "common/common_types.h"
#include "common/hash.h"
#include "video_core/engines/const_buffer_engine_interface.h"
namespace VideoCommon::Shader {
using KeyMap = std::unordered_map<std::pair<u32, u32>, u32, Common::PairHash>;
using BoundSamplerMap = std::unordered_map<u32, Tegra::Engines::SamplerDescriptor>;
using BindlessSamplerMap =
std::unordered_map<std::pair<u32, u32>, Tegra::Engines::SamplerDescriptor, Common::PairHash>;
class ConstBufferLocker {
public:
explicit ConstBufferLocker(Tegra::Engines::ShaderType shader_stage);
explicit ConstBufferLocker(Tegra::Engines::ShaderType shader_stage,
Tegra::Engines::ConstBufferEngineInterface* engine);
// Checks if an engine is setup, it may be possible that during disk shader
// cache run, the engines have not been created yet.
bool IsEngineSet() const;
// Use this to set/change the engine used for this shader.
void SetEngine(Tegra::Engines::ConstBufferEngineInterface* engine);
// Retrieves a key from the locker, if it's registered, it will give the
// registered value, if not it will obtain it from maxwell3d and register it.
std::optional<u32> ObtainKey(u32 buffer, u32 offset);
std::optional<Tegra::Engines::SamplerDescriptor> ObtainBoundSampler(u32 offset);
std::optional<Tegra::Engines::SamplerDescriptor> ObtainBindlessSampler(u32 buffer, u32 offset);
// Manually inserts a key.
void InsertKey(u32 buffer, u32 offset, u32 value);
void InsertBoundSampler(u32 offset, Tegra::Engines::SamplerDescriptor sampler);
void InsertBindlessSampler(u32 buffer, u32 offset, Tegra::Engines::SamplerDescriptor sampler);
// Retrieves the number of keys registered.
std::size_t NumKeys() const {
if (!keys) {
return 0;
}
return keys->size();
}
std::size_t NumBoundSamplers() const {
if (!bound_samplers) {
return 0;
}
return bound_samplers->size();
}
std::size_t NumBindlessSamplers() const {
if (!bindless_samplers) {
return 0;
}
return bindless_samplers->size();
}
// Gives an accessor to the key's database.
// Pre: NumKeys > 0
const KeyMap& AccessKeys() const {
return *keys;
}
// Gives an accessor to the sampler's database.
// Pre: NumBindlessSamplers > 0
const BoundSamplerMap& AccessBoundSamplers() const {
return *bound_samplers;
}
// Gives an accessor to the sampler's database.
// Pre: NumBindlessSamplers > 0
const BindlessSamplerMap& AccessBindlessSamplers() const {
return *bindless_samplers;
}
// Checks keys & samplers against engine's current const buffers. Returns true if they
// are the same value, false otherwise;
bool IsConsistant() const;
private:
Tegra::Engines::ConstBufferEngineInterface* engine;
Tegra::Engines::ShaderType shader_stage;
// All containers are lazy initialized as most shaders don't use them.
std::shared_ptr<KeyMap> keys{};
std::shared_ptr<BoundSamplerMap> bound_samplers{};
std::shared_ptr<BindlessSamplerMap> bindless_samplers{};
};
} // namespace VideoCommon::Shader
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