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189 lines
6.0 KiB
C++
189 lines
6.0 KiB
C++
// Copyright 2020 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 <algorithm>
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#include <queue>
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#include "common/common_types.h"
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#include "common/settings.h"
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#include "core/core.h"
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#include "video_core/delayed_destruction_ring.h"
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#include "video_core/gpu.h"
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#include "video_core/memory_manager.h"
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#include "video_core/rasterizer_interface.h"
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namespace VideoCommon {
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class FenceBase {
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public:
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explicit FenceBase(u32 payload_, bool is_stubbed_)
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: address{}, payload{payload_}, is_semaphore{false}, is_stubbed{is_stubbed_} {}
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explicit FenceBase(GPUVAddr address_, u32 payload_, bool is_stubbed_)
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: address{address_}, payload{payload_}, is_semaphore{true}, is_stubbed{is_stubbed_} {}
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GPUVAddr GetAddress() const {
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return address;
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}
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u32 GetPayload() const {
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return payload;
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}
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bool IsSemaphore() const {
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return is_semaphore;
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}
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private:
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GPUVAddr address;
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u32 payload;
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bool is_semaphore;
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protected:
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bool is_stubbed;
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};
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template <typename TFence, typename TTextureCache, typename TTBufferCache, typename TQueryCache>
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class FenceManager {
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public:
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/// Notify the fence manager about a new frame
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void TickFrame() {
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delayed_destruction_ring.Tick();
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}
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// Unlike other fences, this one doesn't
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void SignalOrdering() {
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std::scoped_lock lock{buffer_cache.mutex};
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buffer_cache.AccumulateFlushes();
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}
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void SignalSemaphore(GPUVAddr addr, u32 value) {
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TryReleasePendingFences();
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const bool should_flush = ShouldFlush();
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CommitAsyncFlushes();
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TFence new_fence = CreateFence(addr, value, !should_flush);
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fences.push(new_fence);
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QueueFence(new_fence);
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if (should_flush) {
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rasterizer.FlushCommands();
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}
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rasterizer.SyncGuestHost();
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}
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void SignalSyncPoint(u32 value) {
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TryReleasePendingFences();
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const bool should_flush = ShouldFlush();
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CommitAsyncFlushes();
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TFence new_fence = CreateFence(value, !should_flush);
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fences.push(new_fence);
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QueueFence(new_fence);
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if (should_flush) {
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rasterizer.FlushCommands();
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}
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rasterizer.SyncGuestHost();
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}
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void WaitPendingFences() {
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while (!fences.empty()) {
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TFence& current_fence = fences.front();
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if (ShouldWait()) {
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WaitFence(current_fence);
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}
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PopAsyncFlushes();
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if (current_fence->IsSemaphore()) {
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gpu_memory.template Write<u32>(current_fence->GetAddress(),
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current_fence->GetPayload());
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} else {
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gpu.IncrementSyncPoint(current_fence->GetPayload());
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}
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PopFence();
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}
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}
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protected:
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explicit FenceManager(VideoCore::RasterizerInterface& rasterizer_, Tegra::GPU& gpu_,
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TTextureCache& texture_cache_, TTBufferCache& buffer_cache_,
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TQueryCache& query_cache_)
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: rasterizer{rasterizer_}, gpu{gpu_}, gpu_memory{gpu.MemoryManager()},
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texture_cache{texture_cache_}, buffer_cache{buffer_cache_}, query_cache{query_cache_} {}
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virtual ~FenceManager() = default;
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/// Creates a Sync Point Fence Interface, does not create a backend fence if 'is_stubbed' is
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/// true
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virtual TFence CreateFence(u32 value, bool is_stubbed) = 0;
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/// Creates a Semaphore Fence Interface, does not create a backend fence if 'is_stubbed' is true
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virtual TFence CreateFence(GPUVAddr addr, u32 value, bool is_stubbed) = 0;
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/// Queues a fence into the backend if the fence isn't stubbed.
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virtual void QueueFence(TFence& fence) = 0;
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/// Notifies that the backend fence has been signaled/reached in host GPU.
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virtual bool IsFenceSignaled(TFence& fence) const = 0;
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/// Waits until a fence has been signalled by the host GPU.
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virtual void WaitFence(TFence& fence) = 0;
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VideoCore::RasterizerInterface& rasterizer;
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Tegra::GPU& gpu;
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Tegra::MemoryManager& gpu_memory;
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TTextureCache& texture_cache;
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TTBufferCache& buffer_cache;
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TQueryCache& query_cache;
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private:
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void TryReleasePendingFences() {
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while (!fences.empty()) {
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TFence& current_fence = fences.front();
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if (ShouldWait() && !IsFenceSignaled(current_fence)) {
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return;
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}
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PopAsyncFlushes();
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if (current_fence->IsSemaphore()) {
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gpu_memory.template Write<u32>(current_fence->GetAddress(),
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current_fence->GetPayload());
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} else {
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gpu.IncrementSyncPoint(current_fence->GetPayload());
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}
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PopFence();
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}
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}
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bool ShouldWait() const {
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std::scoped_lock lock{buffer_cache.mutex, texture_cache.mutex};
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return texture_cache.ShouldWaitAsyncFlushes() || buffer_cache.ShouldWaitAsyncFlushes() ||
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query_cache.ShouldWaitAsyncFlushes();
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}
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bool ShouldFlush() const {
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std::scoped_lock lock{buffer_cache.mutex, texture_cache.mutex};
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return texture_cache.HasUncommittedFlushes() || buffer_cache.HasUncommittedFlushes() ||
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query_cache.HasUncommittedFlushes();
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}
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void PopAsyncFlushes() {
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std::scoped_lock lock{buffer_cache.mutex, texture_cache.mutex};
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texture_cache.PopAsyncFlushes();
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buffer_cache.PopAsyncFlushes();
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query_cache.PopAsyncFlushes();
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}
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void CommitAsyncFlushes() {
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std::scoped_lock lock{buffer_cache.mutex, texture_cache.mutex};
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texture_cache.CommitAsyncFlushes();
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buffer_cache.CommitAsyncFlushes();
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query_cache.CommitAsyncFlushes();
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}
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void PopFence() {
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delayed_destruction_ring.Push(std::move(fences.front()));
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fences.pop();
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}
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std::queue<TFence> fences;
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DelayedDestructionRing<TFence, 6> delayed_destruction_ring;
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};
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} // namespace VideoCommon
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