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94da1e8a7e
- Uses a fixed 64MB for the cache instead of an ever growing map. - Slightly faster by using atomics instead of a single mutex for access. - Thanks for Rodrigo for the idea.
49 lines
1.2 KiB
C++
49 lines
1.2 KiB
C++
// Copyright 2019 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 <array>
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#include <atomic>
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#include "common/common_types.h"
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#include "video_core/rasterizer_interface.h"
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namespace Core::Memory {
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class Memory;
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}
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namespace VideoCore {
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/// Implements the shared part in GPU accelerated rasterizers in RasterizerInterface.
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class RasterizerAccelerated : public RasterizerInterface {
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public:
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explicit RasterizerAccelerated(Core::Memory::Memory& cpu_memory_);
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~RasterizerAccelerated() override;
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void UpdatePagesCachedCount(VAddr addr, u64 size, int delta) override;
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private:
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class CacheEntry final {
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public:
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CacheEntry() = default;
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std::atomic_uint8_t& Count(std::size_t page) {
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return values[page & 7];
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}
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const std::atomic_uint8_t& Count(std::size_t page) const {
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return values[page & 7];
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}
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private:
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std::array<std::atomic_uint8_t, 8> values{};
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};
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static_assert(sizeof(CacheEntry) == 8, "CacheEntry should be 8 bytes!");
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std::array<CacheEntry, 0x800000> cached_pages;
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Core::Memory::Memory& cpu_memory;
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};
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} // namespace VideoCore
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