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Diffstat (limited to '')
-rw-r--r-- | src/video_core/buffer_cache.h | 299 |
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 |