#ifndef EMULATOR_INCLUDE_EMULATOR_GRAPHICS_UTILS_H_
#define EMULATOR_INCLUDE_EMULATOR_GRAPHICS_UTILS_H_

#include "Kyty/Core/Common.h"

#include "Emulator/Common.h"

#include <utility>

#ifdef KYTY_EMU_ENABLED

namespace Kyty {
template <typename T>
class Vector;
} // namespace Kyty

namespace Kyty::Libs::Graphics {

class CommandBuffer;
struct GraphicContext;
struct VulkanBuffer;
struct VulkanImage;
struct DepthStencilVulkanImage;
struct VulkanSwapchain;

struct BufferImageCopy
{
	uint32_t offset;
	uint32_t pitch;
	uint32_t dst_level;
	uint32_t width;
	uint32_t height;
	int      dst_x;
	int      dst_y;
};

struct ImageImageCopy
{
	VulkanImage* src_image;
	uint32_t     src_level;
	uint32_t     dst_level;
	uint32_t     width;
	uint32_t     height;
	int          src_x;
	int          src_y;
	int          dst_x;
	int          dst_y;
};

void UtilBufferToImage(CommandBuffer* buffer, VulkanBuffer* src_buffer, uint32_t src_pitch, VulkanImage* dst_image);
void UtilBufferToImage(CommandBuffer* buffer, VulkanBuffer* src_buffer, VulkanImage* dst_image, const Vector<BufferImageCopy>& regions,
                       uint64_t dst_layout);
void UtilImageToImage(CommandBuffer* buffer, const Vector<ImageImageCopy>& regions, VulkanImage* dst_image, uint64_t dst_layout);
void UtilBlitImage(CommandBuffer* buffer, VulkanImage* src_image, VulkanSwapchain* dst_swapchain);
void UtilFillImage(GraphicContext* ctx, VulkanImage* dst_image, const void* src_data, uint64_t size, uint32_t src_pitch);
void UtilFillImage(GraphicContext* ctx, VulkanImage* dst_image, const void* src_data, uint64_t size, const Vector<BufferImageCopy>& regions,
                   uint64_t dst_layout);
void UtilFillImage(GraphicContext* ctx, const Vector<ImageImageCopy>& regions, VulkanImage* dst_image, uint64_t dst_layout);
void UtilCopyBuffer(VulkanBuffer* src_buffer, VulkanBuffer* dst_buffer, uint64_t size);
void UtilSetDepthLayoutOptimal(DepthStencilVulkanImage* image);
void UtilSetImageLayoutOptimal(VulkanImage* image);

void VulkanCreateBuffer(GraphicContext* gctx, uint64_t size, VulkanBuffer* buffer);
void VulkanDeleteBuffer(GraphicContext* gctx, VulkanBuffer* buffer);

inline std::pair<int, int> UtilCalcMipmapOffset(uint32_t lod, uint32_t width, uint32_t height)
{
	uint32_t mip_width  = width;
	uint32_t mip_height = height;
	int      mip_x      = 0;
	int      mip_y      = 0;

	for (uint32_t i = 0; i < 16; i++)
	{
		if (i == lod)
		{
			return {mip_x, mip_y};
		}

		bool odd = ((i & 1u) != 0);
		mip_x += static_cast<int>(odd ? mip_width : 0);
		mip_y += static_cast<int>(odd ? 0 : mip_height);

		mip_width >>= (mip_width > 1 ? 1u : 0u);
		mip_height >>= (mip_height > 1 ? 1u : 0u);
	}

	return {mip_x, mip_y};
}

} // namespace Kyty::Libs::Graphics

#endif // KYTY_EMU_ENABLED

#endif /* EMULATOR_INCLUDE_EMULATOR_GRAPHICS_UTILS_H_ */