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suyu/src/video_core/fence_manager.h
ReinUsesLisp 9764c13d6d video_core: Rewrite the texture cache
The current texture cache has several points that hurt maintainability
and performance. It's easy to break unrelated parts of the cache
when doing minor changes. The cache can easily forget valuable
information about the cached textures by CPU writes or simply by its
normal usage.The current texture cache has several points that hurt
maintainability and performance. It's easy to break unrelated parts
of the cache when doing minor changes. The cache can easily forget
valuable information about the cached textures by CPU writes or simply
by its normal usage.

This commit aims to address those issues.
2020-12-30 03:38:50 -03:00

177 lines
5.5 KiB
C++

// Copyright 2020 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <algorithm>
#include <queue>
#include "common/common_types.h"
#include "core/core.h"
#include "video_core/delayed_destruction_ring.h"
#include "video_core/gpu.h"
#include "video_core/memory_manager.h"
#include "video_core/rasterizer_interface.h"
namespace VideoCommon {
class FenceBase {
public:
explicit FenceBase(u32 payload_, bool is_stubbed_)
: address{}, payload{payload_}, is_semaphore{false}, is_stubbed{is_stubbed_} {}
explicit FenceBase(GPUVAddr address_, u32 payload_, bool is_stubbed_)
: address{address_}, payload{payload_}, is_semaphore{true}, is_stubbed{is_stubbed_} {}
GPUVAddr GetAddress() const {
return address;
}
u32 GetPayload() const {
return payload;
}
bool IsSemaphore() const {
return is_semaphore;
}
private:
GPUVAddr address;
u32 payload;
bool is_semaphore;
protected:
bool is_stubbed;
};
template <typename TFence, typename TTextureCache, typename TTBufferCache, typename TQueryCache>
class FenceManager {
public:
/// Notify the fence manager about a new frame
void TickFrame() {
delayed_destruction_ring.Tick();
}
void SignalSemaphore(GPUVAddr addr, u32 value) {
TryReleasePendingFences();
const bool should_flush = ShouldFlush();
CommitAsyncFlushes();
TFence new_fence = CreateFence(addr, value, !should_flush);
fences.push(new_fence);
QueueFence(new_fence);
if (should_flush) {
rasterizer.FlushCommands();
}
rasterizer.SyncGuestHost();
}
void SignalSyncPoint(u32 value) {
TryReleasePendingFences();
const bool should_flush = ShouldFlush();
CommitAsyncFlushes();
TFence new_fence = CreateFence(value, !should_flush);
fences.push(new_fence);
QueueFence(new_fence);
if (should_flush) {
rasterizer.FlushCommands();
}
rasterizer.SyncGuestHost();
}
void WaitPendingFences() {
while (!fences.empty()) {
TFence& current_fence = fences.front();
if (ShouldWait()) {
WaitFence(current_fence);
}
PopAsyncFlushes();
if (current_fence->IsSemaphore()) {
gpu_memory.template Write<u32>(current_fence->GetAddress(),
current_fence->GetPayload());
} else {
gpu.IncrementSyncPoint(current_fence->GetPayload());
}
PopFence();
}
}
protected:
explicit FenceManager(VideoCore::RasterizerInterface& rasterizer_, Tegra::GPU& gpu_,
TTextureCache& texture_cache_, TTBufferCache& buffer_cache_,
TQueryCache& query_cache_)
: rasterizer{rasterizer_}, gpu{gpu_}, gpu_memory{gpu.MemoryManager()},
texture_cache{texture_cache_}, buffer_cache{buffer_cache_}, query_cache{query_cache_} {}
virtual ~FenceManager() = default;
/// Creates a Sync Point Fence Interface, does not create a backend fence if 'is_stubbed' is
/// true
virtual TFence CreateFence(u32 value, bool is_stubbed) = 0;
/// Creates a Semaphore Fence Interface, does not create a backend fence if 'is_stubbed' is true
virtual TFence CreateFence(GPUVAddr addr, u32 value, bool is_stubbed) = 0;
/// Queues a fence into the backend if the fence isn't stubbed.
virtual void QueueFence(TFence& fence) = 0;
/// Notifies that the backend fence has been signaled/reached in host GPU.
virtual bool IsFenceSignaled(TFence& fence) const = 0;
/// Waits until a fence has been signalled by the host GPU.
virtual void WaitFence(TFence& fence) = 0;
VideoCore::RasterizerInterface& rasterizer;
Tegra::GPU& gpu;
Tegra::MemoryManager& gpu_memory;
TTextureCache& texture_cache;
TTBufferCache& buffer_cache;
TQueryCache& query_cache;
private:
void TryReleasePendingFences() {
while (!fences.empty()) {
TFence& current_fence = fences.front();
if (ShouldWait() && !IsFenceSignaled(current_fence)) {
return;
}
PopAsyncFlushes();
if (current_fence->IsSemaphore()) {
gpu_memory.template Write<u32>(current_fence->GetAddress(),
current_fence->GetPayload());
} else {
gpu.IncrementSyncPoint(current_fence->GetPayload());
}
PopFence();
}
}
bool ShouldWait() const {
return texture_cache.ShouldWaitAsyncFlushes() || buffer_cache.ShouldWaitAsyncFlushes() ||
query_cache.ShouldWaitAsyncFlushes();
}
bool ShouldFlush() const {
return texture_cache.HasUncommittedFlushes() || buffer_cache.HasUncommittedFlushes() ||
query_cache.HasUncommittedFlushes();
}
void PopAsyncFlushes() {
texture_cache.PopAsyncFlushes();
buffer_cache.PopAsyncFlushes();
query_cache.PopAsyncFlushes();
}
void CommitAsyncFlushes() {
texture_cache.CommitAsyncFlushes();
buffer_cache.CommitAsyncFlushes();
query_cache.CommitAsyncFlushes();
}
void PopFence() {
delayed_destruction_ring.Push(std::move(fences.front()));
fences.pop();
}
std::queue<TFence> fences;
DelayedDestructionRing<TFence, 6> delayed_destruction_ring;
};
} // namespace VideoCommon