136 lines
5 KiB
C++
136 lines
5 KiB
C++
// SPDX-FileCopyrightText: Copyright 2019 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "common/assert.h"
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#include "common/microprofile.h"
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#include "common/scope_exit.h"
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#include "common/settings.h"
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#include "common/thread.h"
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#include "core/core.h"
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#include "core/frontend/emu_window.h"
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#include "video_core/control/scheduler.h"
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#include "video_core/dma_pusher.h"
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#include "video_core/gpu.h"
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#include "video_core/gpu_thread.h"
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#include "video_core/renderer_base.h"
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namespace VideoCommon::GPUThread {
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/// Runs the GPU thread
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static void RunThread(std::stop_token stop_token, Core::System& system,
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VideoCore::RendererBase& renderer, Core::Frontend::GraphicsContext& context,
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Tegra::Control::Scheduler& scheduler, SynchState& state) {
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std::string name = "GPU";
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MicroProfileOnThreadCreate(name.c_str());
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SCOPE_EXIT({ MicroProfileOnThreadExit(); });
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Common::SetCurrentThreadName(name.c_str());
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Common::SetCurrentThreadPriority(Common::ThreadPriority::High);
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system.RegisterHostThread();
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auto current_context = context.Acquire();
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VideoCore::RasterizerInterface* const rasterizer = renderer.ReadRasterizer();
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while (!stop_token.stop_requested()) {
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CommandDataContainer next = state.queue.PopWait(stop_token);
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if (stop_token.stop_requested()) {
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break;
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}
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if (auto* submit_list = std::get_if<SubmitListCommand>(&next.data)) {
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scheduler.Push(submit_list->channel, std::move(submit_list->entries));
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} else if (const auto* data = std::get_if<SwapBuffersCommand>(&next.data)) {
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renderer.SwapBuffers(data->framebuffer ? &*data->framebuffer : nullptr);
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} else if (std::holds_alternative<OnCommandListEndCommand>(next.data)) {
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rasterizer->ReleaseFences();
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} else if (std::holds_alternative<GPUTickCommand>(next.data)) {
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system.GPU().TickWork();
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} else if (const auto* flush = std::get_if<FlushRegionCommand>(&next.data)) {
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rasterizer->FlushRegion(flush->addr, flush->size);
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} else if (const auto* invalidate = std::get_if<InvalidateRegionCommand>(&next.data)) {
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rasterizer->OnCPUWrite(invalidate->addr, invalidate->size);
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} else {
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ASSERT(false);
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}
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state.signaled_fence.store(next.fence);
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if (next.block) {
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// We have to lock the write_lock to ensure that the condition_variable wait not get a
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// race between the check and the lock itself.
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std::scoped_lock lk{state.write_lock};
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state.cv.notify_all();
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}
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}
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}
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ThreadManager::ThreadManager(Core::System& system_, bool is_async_)
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: system{system_}, is_async{is_async_} {}
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ThreadManager::~ThreadManager() = default;
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void ThreadManager::StartThread(VideoCore::RendererBase& renderer,
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Core::Frontend::GraphicsContext& context,
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Tegra::Control::Scheduler& scheduler) {
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rasterizer = renderer.ReadRasterizer();
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thread = std::jthread(RunThread, std::ref(system), std::ref(renderer), std::ref(context),
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std::ref(scheduler), std::ref(state));
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}
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void ThreadManager::SubmitList(s32 channel, Tegra::CommandList&& entries) {
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PushCommand(SubmitListCommand(channel, std::move(entries)));
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}
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void ThreadManager::SwapBuffers(const Tegra::FramebufferConfig* framebuffer) {
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PushCommand(SwapBuffersCommand(framebuffer ? std::make_optional(*framebuffer) : std::nullopt));
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}
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void ThreadManager::FlushRegion(VAddr addr, u64 size) {
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if (!is_async) {
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// Always flush with synchronous GPU mode
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PushCommand(FlushRegionCommand(addr, size));
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return;
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}
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if (!Settings::IsGPULevelExtreme()) {
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return;
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}
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auto& gpu = system.GPU();
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u64 fence = gpu.RequestFlush(addr, size);
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TickGPU();
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gpu.WaitForSyncOperation(fence);
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}
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void ThreadManager::TickGPU() {
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PushCommand(GPUTickCommand());
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}
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void ThreadManager::InvalidateRegion(VAddr addr, u64 size) {
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rasterizer->OnCPUWrite(addr, size);
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}
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void ThreadManager::FlushAndInvalidateRegion(VAddr addr, u64 size) {
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// Skip flush on asynch mode, as FlushAndInvalidateRegion is not used for anything too important
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rasterizer->OnCPUWrite(addr, size);
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}
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void ThreadManager::OnCommandListEnd() {
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PushCommand(OnCommandListEndCommand());
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}
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u64 ThreadManager::PushCommand(CommandData&& command_data, bool block) {
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if (!is_async) {
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// In synchronous GPU mode, block the caller until the command has executed
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block = true;
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}
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std::unique_lock lk(state.write_lock);
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const u64 fence{++state.last_fence};
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state.queue.Push(CommandDataContainer(std::move(command_data), fence, block));
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if (block) {
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Common::CondvarWait(state.cv, lk, thread.get_stop_token(), [this, fence] {
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return fence <= state.signaled_fence.load(std::memory_order_relaxed);
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});
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}
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return fence;
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}
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} // namespace VideoCommon::GPUThread
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