pineapple-src/src/video_core/gpu_thread.h

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// SPDX-FileCopyrightText: Copyright 2019 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
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#pragma once
#include <atomic>
#include <condition_variable>
#include <mutex>
#include <optional>
#include <thread>
#include <variant>
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#include "common/threadsafe_queue.h"
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#include "video_core/framebuffer_config.h"
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namespace Tegra {
struct FramebufferConfig;
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namespace Control {
class Scheduler;
}
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} // namespace Tegra
namespace Core {
namespace Frontend {
class GraphicsContext;
}
class System;
} // namespace Core
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namespace VideoCore {
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class RasterizerInterface;
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class RendererBase;
} // namespace VideoCore
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namespace VideoCommon::GPUThread {
/// Command to signal to the GPU thread that a command list is ready for processing
struct SubmitListCommand final {
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explicit SubmitListCommand(s32 channel_, Tegra::CommandList&& entries_)
: channel{channel_}, entries{std::move(entries_)} {}
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s32 channel;
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Tegra::CommandList entries;
};
/// Command to signal to the GPU thread that a swap buffers is pending
struct SwapBuffersCommand final {
explicit SwapBuffersCommand(std::optional<const Tegra::FramebufferConfig> framebuffer_)
: framebuffer{std::move(framebuffer_)} {}
std::optional<Tegra::FramebufferConfig> framebuffer;
};
/// Command to signal to the GPU thread to flush a region
struct FlushRegionCommand final {
explicit constexpr FlushRegionCommand(VAddr addr_, u64 size_) : addr{addr_}, size{size_} {}
VAddr addr;
u64 size;
};
/// Command to signal to the GPU thread to invalidate a region
struct InvalidateRegionCommand final {
explicit constexpr InvalidateRegionCommand(VAddr addr_, u64 size_) : addr{addr_}, size{size_} {}
VAddr addr;
u64 size;
};
/// Command to signal to the GPU thread to flush and invalidate a region
struct FlushAndInvalidateRegionCommand final {
explicit constexpr FlushAndInvalidateRegionCommand(VAddr addr_, u64 size_)
: addr{addr_}, size{size_} {}
VAddr addr;
u64 size;
};
/// Command called within the gpu, to schedule actions after a command list end
struct OnCommandListEndCommand final {};
/// Command to make the gpu look into pending requests
struct GPUTickCommand final {};
using CommandData =
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std::variant<std::monostate, SubmitListCommand, SwapBuffersCommand, FlushRegionCommand,
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InvalidateRegionCommand, FlushAndInvalidateRegionCommand, OnCommandListEndCommand,
GPUTickCommand>;
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struct CommandDataContainer {
CommandDataContainer() = default;
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explicit CommandDataContainer(CommandData&& data_, u64 next_fence_, bool block_)
: data{std::move(data_)}, fence{next_fence_}, block(block_) {}
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CommandData data;
u64 fence{};
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bool block{};
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};
/// Struct used to synchronize the GPU thread
struct SynchState final {
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using CommandQueue = Common::MPSCQueue<CommandDataContainer, true>;
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std::mutex write_lock;
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CommandQueue queue;
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u64 last_fence{};
std::atomic<u64> signaled_fence{};
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std::condition_variable_any cv;
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};
/// Class used to manage the GPU thread
class ThreadManager final {
public:
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explicit ThreadManager(Core::System& system_, bool is_async_);
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~ThreadManager();
/// Creates and starts the GPU thread.
void StartThread(VideoCore::RendererBase& renderer, Core::Frontend::GraphicsContext& context,
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Tegra::Control::Scheduler& scheduler);
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/// Push GPU command entries to be processed
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void SubmitList(s32 channel, Tegra::CommandList&& entries);
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/// Swap buffers (render frame)
void SwapBuffers(const Tegra::FramebufferConfig* framebuffer);
/// Notify rasterizer that any caches of the specified region should be flushed to Switch memory
void FlushRegion(VAddr addr, u64 size);
/// Notify rasterizer that any caches of the specified region should be invalidated
void InvalidateRegion(VAddr addr, u64 size);
/// Notify rasterizer that any caches of the specified region should be flushed and invalidated
void FlushAndInvalidateRegion(VAddr addr, u64 size);
void OnCommandListEnd();
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void TickGPU();
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private:
/// Pushes a command to be executed by the GPU thread
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u64 PushCommand(CommandData&& command_data, bool block = false);
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Core::System& system;
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const bool is_async;
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VideoCore::RasterizerInterface* rasterizer = nullptr;
SynchState state;
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std::jthread thread;
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};
} // namespace VideoCommon::GPUThread