suyu/src/video_core/rasterizer_accelerated.h
bunnei 4b95b0df97 video_core: rasterizer_cache: Use u16 for cached page count.
- Greatly reduces the risk of overflow, at the cost of doubling the size of this array.
2021-05-27 14:47:24 -07:00

49 lines
1.2 KiB
C++

// Copyright 2019 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <atomic>
#include "common/common_types.h"
#include "video_core/rasterizer_interface.h"
namespace Core::Memory {
class Memory;
}
namespace VideoCore {
/// Implements the shared part in GPU accelerated rasterizers in RasterizerInterface.
class RasterizerAccelerated : public RasterizerInterface {
public:
explicit RasterizerAccelerated(Core::Memory::Memory& cpu_memory_);
~RasterizerAccelerated() override;
void UpdatePagesCachedCount(VAddr addr, u64 size, int delta) override;
private:
class CacheEntry final {
public:
CacheEntry() = default;
std::atomic_uint16_t& Count(std::size_t page) {
return values[page & 3];
}
const std::atomic_uint16_t& Count(std::size_t page) const {
return values[page & 3];
}
private:
std::array<std::atomic_uint16_t, 4> values{};
};
static_assert(sizeof(CacheEntry) == 8, "CacheEntry should be 8 bytes!");
std::array<CacheEntry, 0x1000000> cached_pages;
Core::Memory::Memory& cpu_memory;
};
} // namespace VideoCore