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Merge pull request #2783 from FernandoS27/new-buffer-cache

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Implement a New LLE Buffer Cache
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bunnei 2019-08-29 13:07:01 -04:00 committed by GitHub
commit e424615839
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9 changed files with 684 additions and 330 deletions
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4
src/video_core/CMakeLists.txt
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add_library(video_core STATIC
buffer_cache.h
buffer_cache/buffer_block.h
buffer_cache/buffer_cache.h
buffer_cache/map_interval.h
dma_pusher.cpp
dma_pusher.h
debug_utils/debug_utils.cpp

299
src/video_core/buffer_cache.h
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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 <array>
#include <memory>
#include <mutex>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
#include "common/alignment.h"
#include "common/common_types.h"
#include "core/core.h"
#include "video_core/memory_manager.h"
#include "video_core/rasterizer_cache.h"
namespace VideoCore {
class RasterizerInterface;
}
namespace VideoCommon {
template <typename BufferStorageType>
class CachedBuffer final : public RasterizerCacheObject {
public:
explicit CachedBuffer(VAddr cpu_addr, u8* host_ptr)
: RasterizerCacheObject{host_ptr}, host_ptr{host_ptr}, cpu_addr{cpu_addr} {}
~CachedBuffer() override = default;
VAddr GetCpuAddr() const override {
return cpu_addr;
}
std::size_t GetSizeInBytes() const override {
return size;
}
u8* GetWritableHostPtr() const {
return host_ptr;
}
std::size_t GetSize() const {
return size;
}
std::size_t GetCapacity() const {
return capacity;
}
bool IsInternalized() const {
return is_internal;
}
const BufferStorageType& GetBuffer() const {
return buffer;
}
void SetSize(std::size_t new_size) {
size = new_size;
}
void SetInternalState(bool is_internal_) {
is_internal = is_internal_;
}
BufferStorageType ExchangeBuffer(BufferStorageType buffer_, std::size_t new_capacity) {
capacity = new_capacity;
std::swap(buffer, buffer_);
return buffer_;
}
private:
u8* host_ptr{};
VAddr cpu_addr{};
std::size_t size{};
std::size_t capacity{};
bool is_internal{};
BufferStorageType buffer;
};
template <typename BufferStorageType, typename BufferType, typename StreamBuffer>
class BufferCache : public RasterizerCache<std::shared_ptr<CachedBuffer<BufferStorageType>>> {
public:
using Buffer = std::shared_ptr<CachedBuffer<BufferStorageType>>;
using BufferInfo = std::pair<const BufferType*, u64>;
explicit BufferCache(VideoCore::RasterizerInterface& rasterizer, Core::System& system,
std::unique_ptr<StreamBuffer> stream_buffer)
: RasterizerCache<Buffer>{rasterizer}, system{system},
stream_buffer{std::move(stream_buffer)}, stream_buffer_handle{
this->stream_buffer->GetHandle()} {}
~BufferCache() = default;
void Unregister(const Buffer& entry) override {
std::lock_guard lock{RasterizerCache<Buffer>::mutex};
if (entry->IsInternalized()) {
internalized_entries.erase(entry->GetCacheAddr());
}
ReserveBuffer(entry);
RasterizerCache<Buffer>::Unregister(entry);
}
void TickFrame() {
marked_for_destruction_index =
(marked_for_destruction_index + 1) % marked_for_destruction_ring_buffer.size();
MarkedForDestruction().clear();
}
BufferInfo UploadMemory(GPUVAddr gpu_addr, std::size_t size, std::size_t alignment = 4,
bool internalize = false, bool is_written = false) {
std::lock_guard lock{RasterizerCache<Buffer>::mutex};
auto& memory_manager = system.GPU().MemoryManager();
const auto host_ptr = memory_manager.GetPointer(gpu_addr);
if (!host_ptr) {
return {GetEmptyBuffer(size), 0};
}
const auto cache_addr = ToCacheAddr(host_ptr);
// Cache management is a big overhead, so only cache entries with a given size.
// TODO: Figure out which size is the best for given games.
constexpr std::size_t max_stream_size = 0x800;
if (!internalize && size < max_stream_size &&
internalized_entries.find(cache_addr) == internalized_entries.end()) {
return StreamBufferUpload(host_ptr, size, alignment);
}
auto entry = RasterizerCache<Buffer>::TryGet(cache_addr);
if (!entry) {
return FixedBufferUpload(gpu_addr, host_ptr, size, internalize, is_written);
}
if (entry->GetSize() < size) {
IncreaseBufferSize(entry, size);
}
if (is_written) {
entry->MarkAsModified(true, *this);
}
return {ToHandle(entry->GetBuffer()), 0};
}
/// Uploads from a host memory. Returns the OpenGL buffer where it's located and its offset.
BufferInfo UploadHostMemory(const void* raw_pointer, std::size_t size,
std::size_t alignment = 4) {
std::lock_guard lock{RasterizerCache<Buffer>::mutex};
return StreamBufferUpload(raw_pointer, size, alignment);
}
void Map(std::size_t max_size) {
std::tie(buffer_ptr, buffer_offset_base, invalidated) = stream_buffer->Map(max_size, 4);
buffer_offset = buffer_offset_base;
}
/// Finishes the upload stream, returns true on bindings invalidation.
bool Unmap() {
stream_buffer->Unmap(buffer_offset - buffer_offset_base);
return std::exchange(invalidated, false);
}
virtual const BufferType* GetEmptyBuffer(std::size_t size) = 0;
protected:
void FlushObjectInner(const Buffer& entry) override {
DownloadBufferData(entry->GetBuffer(), 0, entry->GetSize(), entry->GetWritableHostPtr());
}
virtual BufferStorageType CreateBuffer(std::size_t size) = 0;
virtual const BufferType* ToHandle(const BufferStorageType& storage) = 0;
virtual void UploadBufferData(const BufferStorageType& buffer, std::size_t offset,
std::size_t size, const u8* data) = 0;
virtual void DownloadBufferData(const BufferStorageType& buffer, std::size_t offset,
std::size_t size, u8* data) = 0;
virtual void CopyBufferData(const BufferStorageType& src, const BufferStorageType& dst,
std::size_t src_offset, std::size_t dst_offset,
std::size_t size) = 0;
private:
BufferInfo StreamBufferUpload(const void* raw_pointer, std::size_t size,
std::size_t alignment) {
AlignBuffer(alignment);
const std::size_t uploaded_offset = buffer_offset;
std::memcpy(buffer_ptr, raw_pointer, size);
buffer_ptr += size;
buffer_offset += size;
return {&stream_buffer_handle, uploaded_offset};
}
BufferInfo FixedBufferUpload(GPUVAddr gpu_addr, u8* host_ptr, std::size_t size,
bool internalize, bool is_written) {
auto& memory_manager = Core::System::GetInstance().GPU().MemoryManager();
const auto cpu_addr = memory_manager.GpuToCpuAddress(gpu_addr);
ASSERT(cpu_addr);
auto entry = GetUncachedBuffer(*cpu_addr, host_ptr);
entry->SetSize(size);
entry->SetInternalState(internalize);
RasterizerCache<Buffer>::Register(entry);
if (internalize) {
internalized_entries.emplace(ToCacheAddr(host_ptr));
}
if (is_written) {
entry->MarkAsModified(true, *this);
}
if (entry->GetCapacity() < size) {
MarkedForDestruction().push_back(entry->ExchangeBuffer(CreateBuffer(size), size));
}
UploadBufferData(entry->GetBuffer(), 0, size, host_ptr);
return {ToHandle(entry->GetBuffer()), 0};
}
void IncreaseBufferSize(Buffer& entry, std::size_t new_size) {
const std::size_t old_size = entry->GetSize();
if (entry->GetCapacity() < new_size) {
const auto& old_buffer = entry->GetBuffer();
auto new_buffer = CreateBuffer(new_size);
// Copy bits from the old buffer to the new buffer.
CopyBufferData(old_buffer, new_buffer, 0, 0, old_size);
MarkedForDestruction().push_back(
entry->ExchangeBuffer(std::move(new_buffer), new_size));
// This buffer could have been used
invalidated = true;
}
// Upload the new bits.
const std::size_t size_diff = new_size - old_size;
UploadBufferData(entry->GetBuffer(), old_size, size_diff, entry->GetHostPtr() + old_size);
// Update entry's size in the object and in the cache.
Unregister(entry);
entry->SetSize(new_size);
RasterizerCache<Buffer>::Register(entry);
}
Buffer GetUncachedBuffer(VAddr cpu_addr, u8* host_ptr) {
if (auto entry = TryGetReservedBuffer(host_ptr)) {
return entry;
}
return std::make_shared<CachedBuffer<BufferStorageType>>(cpu_addr, host_ptr);
}
Buffer TryGetReservedBuffer(u8* host_ptr) {
const auto it = buffer_reserve.find(ToCacheAddr(host_ptr));
if (it == buffer_reserve.end()) {
return {};
}
auto& reserve = it->second;
auto entry = reserve.back();
reserve.pop_back();
return entry;
}
void ReserveBuffer(Buffer entry) {
buffer_reserve[entry->GetCacheAddr()].push_back(std::move(entry));
}
void AlignBuffer(std::size_t alignment) {
// Align the offset, not the mapped pointer
const std::size_t offset_aligned = Common::AlignUp(buffer_offset, alignment);
buffer_ptr += offset_aligned - buffer_offset;
buffer_offset = offset_aligned;
}
std::vector<BufferStorageType>& MarkedForDestruction() {
return marked_for_destruction_ring_buffer[marked_for_destruction_index];
}
Core::System& system;
std::unique_ptr<StreamBuffer> stream_buffer;
BufferType stream_buffer_handle{};
bool invalidated = false;
u8* buffer_ptr = nullptr;
u64 buffer_offset = 0;
u64 buffer_offset_base = 0;
std::size_t marked_for_destruction_index = 0;
std::array<std::vector<BufferStorageType>, 4> marked_for_destruction_ring_buffer;
std::unordered_set<CacheAddr> internalized_entries;
std::unordered_map<CacheAddr, std::vector<Buffer>> buffer_reserve;
};
} // namespace VideoCommon

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src/video_core/buffer_cache/buffer_block.h Normal file
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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_set>
#include <utility>
#include "common/alignment.h"
#include "common/common_types.h"
#include "video_core/gpu.h"
namespace VideoCommon {
class BufferBlock {
public:
bool Overlaps(const CacheAddr start, const CacheAddr end) const {
return (cache_addr < end) && (cache_addr_end > start);
}
bool IsInside(const CacheAddr other_start, const CacheAddr other_end) const {
return cache_addr <= other_start && other_end <= cache_addr_end;
}
u8* GetWritableHostPtr() const {
return FromCacheAddr(cache_addr);
}
u8* GetWritableHostPtr(std::size_t offset) const {
return FromCacheAddr(cache_addr + offset);
}
std::size_t GetOffset(const CacheAddr in_addr) {
return static_cast<std::size_t>(in_addr - cache_addr);
}
CacheAddr GetCacheAddr() const {
return cache_addr;
}
CacheAddr GetCacheAddrEnd() const {
return cache_addr_end;
}
void SetCacheAddr(const CacheAddr new_addr) {
cache_addr = new_addr;
cache_addr_end = new_addr + size;
}
std::size_t GetSize() const {
return size;
}
void SetEpoch(u64 new_epoch) {
epoch = new_epoch;
}
u64 GetEpoch() {
return epoch;
}
protected:
explicit BufferBlock(CacheAddr cache_addr, const std::size_t size) : size{size} {
SetCacheAddr(cache_addr);
}
~BufferBlock() = default;
private:
CacheAddr cache_addr{};
CacheAddr cache_addr_end{};
u64 pages{};
std::size_t size{};
u64 epoch{};
};
} // namespace VideoCommon

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src/video_core/buffer_cache/buffer_cache.h Normal file
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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 <array>
#include <memory>
#include <mutex>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
#include "common/alignment.h"
#include "common/common_types.h"
#include "core/core.h"
#include "video_core/buffer_cache/buffer_block.h"
#include "video_core/buffer_cache/map_interval.h"
#include "video_core/memory_manager.h"
namespace VideoCore {
class RasterizerInterface;
}
namespace VideoCommon {
using MapInterval = std::shared_ptr<MapIntervalBase>;
template <typename TBuffer, typename TBufferType, typename StreamBuffer>
class BufferCache {
public:
using BufferInfo = std::pair<const TBufferType*, u64>;
BufferInfo UploadMemory(GPUVAddr gpu_addr, std::size_t size, std::size_t alignment = 4,
bool is_written = false) {
std::lock_guard lock{mutex};
auto& memory_manager = system.GPU().MemoryManager();
const auto host_ptr = memory_manager.GetPointer(gpu_addr);
if (!host_ptr) {
return {GetEmptyBuffer(size), 0};
}
const auto cache_addr = ToCacheAddr(host_ptr);
// Cache management is a big overhead, so only cache entries with a given size.
// TODO: Figure out which size is the best for given games.
constexpr std::size_t max_stream_size = 0x800;
if (size < max_stream_size) {
if (!is_written && !IsRegionWritten(cache_addr, cache_addr + size - 1)) {
return StreamBufferUpload(host_ptr, size, alignment);
}
}
auto block = GetBlock(cache_addr, size);
auto map = MapAddress(block, gpu_addr, cache_addr, size);
if (is_written) {
map->MarkAsModified(true, GetModifiedTicks());
if (!map->IsWritten()) {
map->MarkAsWritten(true);
MarkRegionAsWritten(map->GetStart(), map->GetEnd() - 1);
}
} else {
if (map->IsWritten()) {
WriteBarrier();
}
}
const u64 offset = static_cast<u64>(block->GetOffset(cache_addr));
return {ToHandle(block), offset};
}
/// Uploads from a host memory. Returns the OpenGL buffer where it's located and its offset.
BufferInfo UploadHostMemory(const void* raw_pointer, std::size_t size,
std::size_t alignment = 4) {
std::lock_guard lock{mutex};
return StreamBufferUpload(raw_pointer, size, alignment);
}
void Map(std::size_t max_size) {
std::lock_guard lock{mutex};
std::tie(buffer_ptr, buffer_offset_base, invalidated) = stream_buffer->Map(max_size, 4);
buffer_offset = buffer_offset_base;
}
/// Finishes the upload stream, returns true on bindings invalidation.
bool Unmap() {
std::lock_guard lock{mutex};
stream_buffer->Unmap(buffer_offset - buffer_offset_base);
return std::exchange(invalidated, false);
}
void TickFrame() {
++epoch;
while (!pending_destruction.empty()) {
if (pending_destruction.front()->GetEpoch() + 1 > epoch) {
break;
}
pending_destruction.pop_front();
}
}
/// Write any cached resources overlapping the specified region back to memory
void FlushRegion(CacheAddr addr, std::size_t size) {
std::lock_guard lock{mutex};
std::vector<MapInterval> objects = GetMapsInRange(addr, size);
std::sort(objects.begin(), objects.end(), [](const MapInterval& a, const MapInterval& b) {
return a->GetModificationTick() < b->GetModificationTick();
});
for (auto& object : objects) {
if (object->IsModified() && object->IsRegistered()) {
FlushMap(object);
}
}
}
/// Mark the specified region as being invalidated
void InvalidateRegion(CacheAddr addr, u64 size) {
std::lock_guard lock{mutex};
std::vector<MapInterval> objects = GetMapsInRange(addr, size);
for (auto& object : objects) {
if (object->IsRegistered()) {
Unregister(object);
}
}
}
virtual const TBufferType* GetEmptyBuffer(std::size_t size) = 0;
protected:
explicit BufferCache(VideoCore::RasterizerInterface& rasterizer, Core::System& system,
std::unique_ptr<StreamBuffer> stream_buffer)
: rasterizer{rasterizer}, system{system}, stream_buffer{std::move(stream_buffer)},
stream_buffer_handle{this->stream_buffer->GetHandle()} {}
~BufferCache() = default;
virtual const TBufferType* ToHandle(const TBuffer& storage) = 0;
virtual void WriteBarrier() = 0;
virtual TBuffer CreateBlock(CacheAddr cache_addr, std::size_t size) = 0;
virtual void UploadBlockData(const TBuffer& buffer, std::size_t offset, std::size_t size,
const u8* data) = 0;
virtual void DownloadBlockData(const TBuffer& buffer, std::size_t offset, std::size_t size,
u8* data) = 0;
virtual void CopyBlock(const TBuffer& src, const TBuffer& dst, std::size_t src_offset,
std::size_t dst_offset, std::size_t size) = 0;
/// Register an object into the cache
void Register(const MapInterval& new_map, bool inherit_written = false) {
const CacheAddr cache_ptr = new_map->GetStart();
const std::optional<VAddr> cpu_addr =
system.GPU().MemoryManager().GpuToCpuAddress(new_map->GetGpuAddress());
if (!cache_ptr || !cpu_addr) {
LOG_CRITICAL(HW_GPU, "Failed to register buffer with unmapped gpu_address 0x{:016x}",
new_map->GetGpuAddress());
return;
}
const std::size_t size = new_map->GetEnd() - new_map->GetStart();
new_map->SetCpuAddress(*cpu_addr);
new_map->MarkAsRegistered(true);
const IntervalType interval{new_map->GetStart(), new_map->GetEnd()};
mapped_addresses.insert({interval, new_map});
rasterizer.UpdatePagesCachedCount(*cpu_addr, size, 1);
if (inherit_written) {
MarkRegionAsWritten(new_map->GetStart(), new_map->GetEnd() - 1);
new_map->MarkAsWritten(true);
}
}
/// Unregisters an object from the cache
void Unregister(MapInterval& map) {
const std::size_t size = map->GetEnd() - map->GetStart();
rasterizer.UpdatePagesCachedCount(map->GetCpuAddress(), size, -1);
map->MarkAsRegistered(false);
if (map->IsWritten()) {
UnmarkRegionAsWritten(map->GetStart(), map->GetEnd() - 1);
}
const IntervalType delete_interval{map->GetStart(), map->GetEnd()};
mapped_addresses.erase(delete_interval);
}
private:
MapInterval CreateMap(const CacheAddr start, const CacheAddr end, const GPUVAddr gpu_addr) {
return std::make_shared<MapIntervalBase>(start, end, gpu_addr);
}
MapInterval MapAddress(const TBuffer& block, const GPUVAddr gpu_addr,
const CacheAddr cache_addr, const std::size_t size) {
std::vector<MapInterval> overlaps = GetMapsInRange(cache_addr, size);
if (overlaps.empty()) {
const CacheAddr cache_addr_end = cache_addr + size;
MapInterval new_map = CreateMap(cache_addr, cache_addr_end, gpu_addr);
u8* host_ptr = FromCacheAddr(cache_addr);
UploadBlockData(block, block->GetOffset(cache_addr), size, host_ptr);
Register(new_map);
return new_map;
}
const CacheAddr cache_addr_end = cache_addr + size;
if (overlaps.size() == 1) {
MapInterval& current_map = overlaps[0];
if (current_map->IsInside(cache_addr, cache_addr_end)) {
return current_map;
}
}
CacheAddr new_start = cache_addr;
CacheAddr new_end = cache_addr_end;
bool write_inheritance = false;
bool modified_inheritance = false;
// Calculate new buffer parameters
for (auto& overlap : overlaps) {
new_start = std::min(overlap->GetStart(), new_start);
new_end = std::max(overlap->GetEnd(), new_end);
write_inheritance |= overlap->IsWritten();
modified_inheritance |= overlap->IsModified();
}
GPUVAddr new_gpu_addr = gpu_addr + new_start - cache_addr;
for (auto& overlap : overlaps) {
Unregister(overlap);
}
UpdateBlock(block, new_start, new_end, overlaps);
MapInterval new_map = CreateMap(new_start, new_end, new_gpu_addr);
if (modified_inheritance) {
new_map->MarkAsModified(true, GetModifiedTicks());
}
Register(new_map, write_inheritance);
return new_map;
}
void UpdateBlock(const TBuffer& block, CacheAddr start, CacheAddr end,
std::vector<MapInterval>& overlaps) {
const IntervalType base_interval{start, end};
IntervalSet interval_set{};
interval_set.add(base_interval);
for (auto& overlap : overlaps) {
const IntervalType subtract{overlap->GetStart(), overlap->GetEnd()};
interval_set.subtract(subtract);
}
for (auto& interval : interval_set) {
std::size_t size = interval.upper() - interval.lower();
if (size > 0) {
u8* host_ptr = FromCacheAddr(interval.lower());
UploadBlockData(block, block->GetOffset(interval.lower()), size, host_ptr);
}
}
}
std::vector<MapInterval> GetMapsInRange(CacheAddr addr, std::size_t size) {
if (size == 0) {
return {};
}
std::vector<MapInterval> objects{};
const IntervalType interval{addr, addr + size};
for (auto& pair : boost::make_iterator_range(mapped_addresses.equal_range(interval))) {
objects.push_back(pair.second);
}
return objects;
}
/// Returns a ticks counter used for tracking when cached objects were last modified
u64 GetModifiedTicks() {
return ++modified_ticks;
}
void FlushMap(MapInterval map) {
std::size_t size = map->GetEnd() - map->GetStart();
TBuffer block = blocks[map->GetStart() >> block_page_bits];
u8* host_ptr = FromCacheAddr(map->GetStart());
DownloadBlockData(block, block->GetOffset(map->GetStart()), size, host_ptr);
map->MarkAsModified(false, 0);
}
BufferInfo StreamBufferUpload(const void* raw_pointer, std::size_t size,
std::size_t alignment) {
AlignBuffer(alignment);
const std::size_t uploaded_offset = buffer_offset;
std::memcpy(buffer_ptr, raw_pointer, size);
buffer_ptr += size;
buffer_offset += size;
return {&stream_buffer_handle, uploaded_offset};
}
void AlignBuffer(std::size_t alignment) {
// Align the offset, not the mapped pointer
const std::size_t offset_aligned = Common::AlignUp(buffer_offset, alignment);
buffer_ptr += offset_aligned - buffer_offset;
buffer_offset = offset_aligned;
}
TBuffer EnlargeBlock(TBuffer buffer) {
const std::size_t old_size = buffer->GetSize();
const std::size_t new_size = old_size + block_page_size;
const CacheAddr cache_addr = buffer->GetCacheAddr();
TBuffer new_buffer = CreateBlock(cache_addr, new_size);
CopyBlock(buffer, new_buffer, 0, 0, old_size);
buffer->SetEpoch(epoch);
pending_destruction.push_back(buffer);
const CacheAddr cache_addr_end = cache_addr + new_size - 1;
u64 page_start = cache_addr >> block_page_bits;
const u64 page_end = cache_addr_end >> block_page_bits;
while (page_start <= page_end) {
blocks[page_start] = new_buffer;
++page_start;
}
return new_buffer;
}
TBuffer MergeBlocks(TBuffer first, TBuffer second) {
const std::size_t size_1 = first->GetSize();
const std::size_t size_2 = second->GetSize();
const CacheAddr first_addr = first->GetCacheAddr();
const CacheAddr second_addr = second->GetCacheAddr();
const CacheAddr new_addr = std::min(first_addr, second_addr);
const std::size_t new_size = size_1 + size_2;
TBuffer new_buffer = CreateBlock(new_addr, new_size);
CopyBlock(first, new_buffer, 0, new_buffer->GetOffset(first_addr), size_1);
CopyBlock(second, new_buffer, 0, new_buffer->GetOffset(second_addr), size_2);
first->SetEpoch(epoch);
second->SetEpoch(epoch);
pending_destruction.push_back(first);
pending_destruction.push_back(second);
const CacheAddr cache_addr_end = new_addr + new_size - 1;
u64 page_start = new_addr >> block_page_bits;
const u64 page_end = cache_addr_end >> block_page_bits;
while (page_start <= page_end) {
blocks[page_start] = new_buffer;
++page_start;
}
return new_buffer;
}
TBuffer GetBlock(const CacheAddr cache_addr, const std::size_t size) {
TBuffer found{};
const CacheAddr cache_addr_end = cache_addr + size - 1;
u64 page_start = cache_addr >> block_page_bits;
const u64 page_end = cache_addr_end >> block_page_bits;
const u64 num_pages = page_end - page_start + 1;
while (page_start <= page_end) {
auto it = blocks.find(page_start);
if (it == blocks.end()) {
if (found) {
found = EnlargeBlock(found);
} else {
const CacheAddr start_addr = (page_start << block_page_bits);
found = CreateBlock(start_addr, block_page_size);
blocks[page_start] = found;
}
} else {
if (found) {
if (found == it->second) {
++page_start;
continue;
}
found = MergeBlocks(found, it->second);
} else {
found = it->second;
}
}
++page_start;
}
return found;
}
void MarkRegionAsWritten(const CacheAddr start, const CacheAddr end) {
u64 page_start = start >> write_page_bit;
const u64 page_end = end >> write_page_bit;
while (page_start <= page_end) {
auto it = written_pages.find(page_start);
if (it != written_pages.end()) {
it->second = it->second + 1;
} else {
written_pages[page_start] = 1;
}
page_start++;
}
}
void UnmarkRegionAsWritten(const CacheAddr start, const CacheAddr end) {
u64 page_start = start >> write_page_bit;
const u64 page_end = end >> write_page_bit;
while (page_start <= page_end) {
auto it = written_pages.find(page_start);
if (it != written_pages.end()) {
if (it->second > 1) {
it->second = it->second - 1;
} else {
written_pages.erase(it);
}
}
page_start++;
}
}
bool IsRegionWritten(const CacheAddr start, const CacheAddr end) const {
u64 page_start = start >> write_page_bit;
const u64 page_end = end >> write_page_bit;
while (page_start <= page_end) {
if (written_pages.count(page_start) > 0) {
return true;
}
page_start++;
}
return false;
}
std::unique_ptr<StreamBuffer> stream_buffer;
TBufferType stream_buffer_handle{};
bool invalidated = false;
u8* buffer_ptr = nullptr;
u64 buffer_offset = 0;
u64 buffer_offset_base = 0;
using IntervalSet = boost::icl::interval_set<CacheAddr>;
using IntervalCache = boost::icl::interval_map<CacheAddr, MapInterval>;
using IntervalType = typename IntervalCache::interval_type;
IntervalCache mapped_addresses{};
static constexpr u64 write_page_bit{11};
std::unordered_map<u64, u32> written_pages{};
static constexpr u64 block_page_bits{21};
static constexpr u64 block_page_size{1 << block_page_bits};
std::unordered_map<u64, TBuffer> blocks{};
std::list<TBuffer> pending_destruction{};
u64 epoch{};
u64 modified_ticks{};
VideoCore::RasterizerInterface& rasterizer;
Core::System& system;
std::recursive_mutex mutex;
};
} // namespace VideoCommon

89
src/video_core/buffer_cache/map_interval.h Normal file
View file

@ -0,0 +1,89 @@
// Copyright 2019 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include "common/common_types.h"
#include "video_core/gpu.h"
namespace VideoCommon {
class MapIntervalBase {
public:
MapIntervalBase(const CacheAddr start, const CacheAddr end, const GPUVAddr gpu_addr)
: start{start}, end{end}, gpu_addr{gpu_addr} {}
void SetCpuAddress(VAddr new_cpu_addr) {
cpu_addr = new_cpu_addr;
}
VAddr GetCpuAddress() const {
return cpu_addr;
}
GPUVAddr GetGpuAddress() const {
return gpu_addr;
}
bool IsInside(const CacheAddr other_start, const CacheAddr other_end) const {
return (start <= other_start && other_end <= end);
}
bool operator==(const MapIntervalBase& rhs) const {
return std::tie(start, end) == std::tie(rhs.start, rhs.end);
}
bool operator!=(const MapIntervalBase& rhs) const {
return !operator==(rhs);
}
void MarkAsRegistered(const bool registered) {
is_registered = registered;
}
bool IsRegistered() const {
return is_registered;
}
CacheAddr GetStart() const {
return start;
}
CacheAddr GetEnd() const {
return end;
}
void MarkAsModified(const bool is_modified_, const u64 tick) {
is_modified = is_modified_;
ticks = tick;
}
bool IsModified() const {
return is_modified;
}
u64 GetModificationTick() const {
return ticks;
}
void MarkAsWritten(const bool is_written_) {
is_written = is_written_;
}
bool IsWritten() const {
return is_written;
}
private:
CacheAddr start;
CacheAddr end;
GPUVAddr gpu_addr;
VAddr cpu_addr{};
bool is_written{};
bool is_modified{};
bool is_registered{};
u64 ticks{};
};
} // namespace VideoCommon

4
src/video_core/gpu.h
View file

@ -19,6 +19,10 @@ inline CacheAddr ToCacheAddr(const void* host_ptr) {
return reinterpret_cast<CacheAddr>(host_ptr);
}
inline u8* FromCacheAddr(CacheAddr cache_addr) {
return reinterpret_cast<u8*>(cache_addr);
}
namespace Core {
class System;
}

51
src/video_core/renderer_opengl/gl_buffer_cache.cpp
View file

@ -7,28 +7,40 @@
#include <glad/glad.h>
#include "common/assert.h"
#include "common/microprofile.h"
#include "video_core/renderer_opengl/gl_buffer_cache.h"
#include "video_core/renderer_opengl/gl_rasterizer.h"
#include "video_core/renderer_opengl/gl_resource_manager.h"
namespace OpenGL {
MICROPROFILE_DEFINE(OpenGL_Buffer_Download, "OpenGL", "Buffer Download", MP_RGB(192, 192, 128));
CachedBufferBlock::CachedBufferBlock(CacheAddr cache_addr, const std::size_t size)
: VideoCommon::BufferBlock{cache_addr, size} {
gl_buffer.Create();
glNamedBufferData(gl_buffer.handle, static_cast<GLsizeiptr>(size), nullptr, GL_DYNAMIC_DRAW);
}
CachedBufferBlock::~CachedBufferBlock() = default;
OGLBufferCache::OGLBufferCache(RasterizerOpenGL& rasterizer, Core::System& system,
std::size_t stream_size)
: VideoCommon::BufferCache<OGLBuffer, GLuint, OGLStreamBuffer>{
: VideoCommon::BufferCache<Buffer, GLuint, OGLStreamBuffer>{
rasterizer, system, std::make_unique<OGLStreamBuffer>(stream_size, true)} {}
OGLBufferCache::~OGLBufferCache() = default;
OGLBuffer OGLBufferCache::CreateBuffer(std::size_t size) {
OGLBuffer buffer;
buffer.Create();
glNamedBufferData(buffer.handle, static_cast<GLsizeiptr>(size), nullptr, GL_DYNAMIC_DRAW);
return buffer;
Buffer OGLBufferCache::CreateBlock(CacheAddr cache_addr, std::size_t size) {
return std::make_shared<CachedBufferBlock>(cache_addr, size);
}
const GLuint* OGLBufferCache::ToHandle(const OGLBuffer& buffer) {
return &buffer.handle;
void OGLBufferCache::WriteBarrier() {
glMemoryBarrier(GL_ALL_BARRIER_BITS);
}
const GLuint* OGLBufferCache::ToHandle(const Buffer& buffer) {
return buffer->GetHandle();
}
const GLuint* OGLBufferCache::GetEmptyBuffer(std::size_t) {
@ -36,23 +48,24 @@ const GLuint* OGLBufferCache::GetEmptyBuffer(std::size_t) {
return &null_buffer;
}
void OGLBufferCache::UploadBufferData(const OGLBuffer& buffer, std::size_t offset, std::size_t size,
const u8* data) {
glNamedBufferSubData(buffer.handle, static_cast<GLintptr>(offset),
void OGLBufferCache::UploadBlockData(const Buffer& buffer, std::size_t offset, std::size_t size,
const u8* data) {
glNamedBufferSubData(*buffer->GetHandle(), static_cast<GLintptr>(offset),
static_cast<GLsizeiptr>(size), data);
}
void OGLBufferCache::DownloadBufferData(const OGLBuffer& buffer, std::size_t offset,
std::size_t size, u8* data) {
glGetNamedBufferSubData(buffer.handle, static_cast<GLintptr>(offset),
void OGLBufferCache::DownloadBlockData(const Buffer& buffer, std::size_t offset, std::size_t size,
u8* data) {
MICROPROFILE_SCOPE(OpenGL_Buffer_Download);
glGetNamedBufferSubData(*buffer->GetHandle(), static_cast<GLintptr>(offset),
static_cast<GLsizeiptr>(size), data);
}
void OGLBufferCache::CopyBufferData(const OGLBuffer& src, const OGLBuffer& dst,
std::size_t src_offset, std::size_t dst_offset,
std::size_t size) {
glCopyNamedBufferSubData(src.handle, dst.handle, static_cast<GLintptr>(src_offset),
static_cast<GLintptr>(dst_offset), static_cast<GLsizeiptr>(size));
void OGLBufferCache::CopyBlock(const Buffer& src, const Buffer& dst, std::size_t src_offset,
std::size_t dst_offset, std::size_t size) {
glCopyNamedBufferSubData(*src->GetHandle(), *dst->GetHandle(),
static_cast<GLintptr>(src_offset), static_cast<GLintptr>(dst_offset),
static_cast<GLsizeiptr>(size));
}
} // namespace OpenGL

39
src/video_core/renderer_opengl/gl_buffer_cache.h
View file

@ -7,7 +7,7 @@
#include <memory>
#include "common/common_types.h"
#include "video_core/buffer_cache.h"
#include "video_core/buffer_cache/buffer_cache.h"
#include "video_core/rasterizer_cache.h"
#include "video_core/renderer_opengl/gl_resource_manager.h"
#include "video_core/renderer_opengl/gl_stream_buffer.h"
@ -21,7 +21,24 @@ namespace OpenGL {
class OGLStreamBuffer;
class RasterizerOpenGL;
class OGLBufferCache final : public VideoCommon::BufferCache<OGLBuffer, GLuint, OGLStreamBuffer> {
class CachedBufferBlock;
using Buffer = std::shared_ptr<CachedBufferBlock>;
class CachedBufferBlock : public VideoCommon::BufferBlock {
public:
explicit CachedBufferBlock(CacheAddr cache_addr, const std::size_t size);
~CachedBufferBlock();
const GLuint* GetHandle() const {
return &gl_buffer.handle;
}
private:
OGLBuffer gl_buffer{};
};
class OGLBufferCache final : public VideoCommon::BufferCache<Buffer, GLuint, OGLStreamBuffer> {
public:
explicit OGLBufferCache(RasterizerOpenGL& rasterizer, Core::System& system,
std::size_t stream_size);
@ -30,18 +47,20 @@ public:
const GLuint* GetEmptyBuffer(std::size_t) override;
protected:
OGLBuffer CreateBuffer(std::size_t size) override;
Buffer CreateBlock(CacheAddr cache_addr, std::size_t size) override;
const GLuint* ToHandle(const OGLBuffer& buffer) override;
void WriteBarrier() override;
void UploadBufferData(const OGLBuffer& buffer, std::size_t offset, std::size_t size,
const u8* data) override;
const GLuint* ToHandle(const Buffer& buffer) override;
void DownloadBufferData(const OGLBuffer& buffer, std::size_t offset, std::size_t size,
u8* data) override;
void UploadBlockData(const Buffer& buffer, std::size_t offset, std::size_t size,
const u8* data) override;
void CopyBufferData(const OGLBuffer& src, const OGLBuffer& dst, std::size_t src_offset,
std::size_t dst_offset, std::size_t size) override;
void DownloadBlockData(const Buffer& buffer, std::size_t offset, std::size_t size,
u8* data) override;
void CopyBlock(const Buffer& src, const Buffer& dst, std::size_t src_offset,
std::size_t dst_offset, std::size_t size) override;
};
} // namespace OpenGL

2
src/video_core/renderer_opengl/gl_rasterizer.cpp
View file

@ -980,7 +980,7 @@ void RasterizerOpenGL::SetupGlobalMemory(const GLShader::GlobalMemoryEntry& entr
GPUVAddr gpu_addr, std::size_t size) {
const auto alignment{device.GetShaderStorageBufferAlignment()};
const auto [ssbo, buffer_offset] =
buffer_cache.UploadMemory(gpu_addr, size, alignment, true, entry.IsWritten());
buffer_cache.UploadMemory(gpu_addr, size, alignment, entry.IsWritten());
bind_ssbo_pushbuffer.Push(ssbo, buffer_offset, static_cast<GLsizeiptr>(size));
}