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authorFernando Sahmkow <fsahmkow27@gmail.com>2019-07-19 16:50:40 +0200
committerFernandoS27 <fsahmkow27@gmail.com>2019-08-21 18:14:22 +0200
commit862bec001b7ada13ba0e97f95d6ad108ae8a8d0c (patch)
treed366f7768d0acd4cbe1514a57b9fddcfb4c79eaa /src/video_core/buffer_cache.h
parentMerge pull request #2748 from FernandoS27/align-memory (diff)
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Diffstat (limited to 'src/video_core/buffer_cache.h')
-rw-r--r--src/video_core/buffer_cache.h299
1 files changed, 0 insertions, 299 deletions
diff --git a/src/video_core/buffer_cache.h b/src/video_core/buffer_cache.h
deleted file mode 100644
index 6f868b8b4..000000000
--- a/src/video_core/buffer_cache.h
+++ /dev/null
@@ -1,299 +0,0 @@
-// 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