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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 <memory>
#include <tuple>
#include "common/common_types.h"
#include "video_core/gpu.h"
#include "video_core/rasterizer_cache.h"
#include "video_core/renderer_vulkan/declarations.h"
#include "video_core/renderer_vulkan/vk_scheduler.h"
namespace Tegra {
class MemoryManager;
}
namespace Vulkan {
class VKDevice;
class VKFence;
class VKMemoryManager;
class VKStreamBuffer;
class CachedBufferEntry final : public RasterizerCacheObject {
public:
explicit CachedBufferEntry(VAddr cpu_addr, std::size_t size, u64 offset, std::size_t alignment,
u8* host_ptr);
VAddr GetCpuAddr() const override {
return cpu_addr;
}
std::size_t GetSizeInBytes() const override {
return size;
}
std::size_t GetSize() const {
return size;
}
u64 GetOffset() const {
return offset;
}
std::size_t GetAlignment() const {
return alignment;
}
// We do not have to flush this cache as things in it are never modified by us.
void Flush() override {}
private:
VAddr cpu_addr{};
std::size_t size{};
u64 offset{};
std::size_t alignment{};
};
class VKBufferCache final : public RasterizerCache<std::shared_ptr<CachedBufferEntry>> {
public:
explicit VKBufferCache(Tegra::MemoryManager& tegra_memory_manager,
VideoCore::RasterizerInterface& rasterizer, const VKDevice& device,
VKMemoryManager& memory_manager, VKScheduler& scheduler, u64 size);
~VKBufferCache();
/// Uploads data from a guest GPU address. Returns host's buffer offset where it's been
/// allocated.
u64 UploadMemory(GPUVAddr gpu_addr, std::size_t size, u64 alignment = 4, bool cache = true);
/// Uploads from a host memory. Returns host's buffer offset where it's been allocated.
u64 UploadHostMemory(const u8* raw_pointer, std::size_t size, u64 alignment = 4);
/// Reserves memory to be used by host's CPU. Returns mapped address and offset.
std::tuple<u8*, u64> ReserveMemory(std::size_t size, u64 alignment = 4);
/// Reserves a region of memory to be used in subsequent upload/reserve operations.
void Reserve(std::size_t max_size);
/// Ensures that the set data is sent to the device.
[[nodiscard]] VKExecutionContext Send(VKExecutionContext exctx);
/// Returns the buffer cache handle.
vk::Buffer GetBuffer() const {
return buffer_handle;
}
private:
void AlignBuffer(std::size_t alignment);
Tegra::MemoryManager& tegra_memory_manager;
std::unique_ptr<VKStreamBuffer> stream_buffer;
vk::Buffer buffer_handle;
u8* buffer_ptr = nullptr;
u64 buffer_offset = 0;
u64 buffer_offset_base = 0;
};
} // namespace Vulkan
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