#ifndef LOVE_GRAPHICS_VULKAN_BUFFER_H
#define LOVE_GRAPHICS_VULKAN_BUFFER_H

#include "graphics/Buffer.h"
#include "graphics/Volatile.h"

#include <vulkan/vulkan.h>
#include "vk_mem_alloc.h"


namespace love {
namespace graphics {
namespace vulkan {
class Buffer : public love::graphics::Buffer, public Volatile {
public:
	Buffer(love::graphics::Graphics* gfx, const Settings& settings, const std::vector<DataDeclaration>& format, const void* data, size_t size, size_t arraylength);
	virtual ~Buffer();

	virtual bool loadVolatile() override;
	virtual void unloadVolatile() override;

	void* map(MapType map, size_t offset, size_t size) override;
	void unmap(size_t usedoffset, size_t usedsize) override;
	bool fill(size_t offset, size_t size, const void* data) override;
	void copyTo(love::graphics::Buffer* dest, size_t sourceoffset, size_t destoffset, size_t size) override;
	ptrdiff_t getHandle() const override {
		return (ptrdiff_t) buffer;	// todo ?
	}
	ptrdiff_t getTexelBufferHandle() const override {
		throw love::Exception("unimplemented Buffer::getTexelBufferHandle");
		return (ptrdiff_t) nullptr;	// todo ?
	}

private:
	// todo use a staging buffer for improved performance
	VkBuffer buffer = VK_NULL_HANDLE;
	love::graphics::Graphics* gfx;
	VmaAllocator allocator;
	VmaAllocation allocation;
	VmaAllocationInfo allocInfo;
	BufferUsageFlags usageFlags;
};
} // vulkan
} // graphics
} // love

#endif