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// Copyright 2018 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <cstddef>
#include <memory>
#include <tuple>
#include "common/common_types.h"
#include "video_core/rasterizer_cache.h"
#include "video_core/renderer_opengl/gl_resource_manager.h"
#include "video_core/renderer_opengl/gl_stream_buffer.h"
namespace OpenGL {
class RasterizerOpenGL;
class CachedBufferEntry final : public RasterizerCacheObject {
public:
explicit CachedBufferEntry(VAddr cpu_addr, std::size_t size, GLintptr 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;
}
GLintptr 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{};
GLintptr offset{};
std::size_t alignment{};
};
class OGLBufferCache final : public RasterizerCache<std::shared_ptr<CachedBufferEntry>> {
public:
explicit OGLBufferCache(RasterizerOpenGL& rasterizer, std::size_t size);
/// Uploads data from a guest GPU address. Returns host's buffer offset where it's been
/// allocated.
GLintptr UploadMemory(GPUVAddr gpu_addr, std::size_t size, std::size_t alignment = 4,
bool cache = true);
/// Uploads from a host memory. Returns host's buffer offset where it's been allocated.
GLintptr UploadHostMemory(const void* raw_pointer, std::size_t size, std::size_t alignment = 4);
/// Reserves memory to be used by host's CPU. Returns mapped address and offset.
std::tuple<u8*, GLintptr> ReserveMemory(std::size_t size, std::size_t alignment = 4);
bool Map(std::size_t max_size);
void Unmap();
GLuint GetHandle() const;
protected:
void AlignBuffer(std::size_t alignment);
private:
OGLStreamBuffer stream_buffer;
u8* buffer_ptr = nullptr;
GLintptr buffer_offset = 0;
GLintptr buffer_offset_base = 0;
};
} // namespace OpenGL
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