#pragma once

struct DrawWallArgs
{
	uint32_t *dest;
	const uint32_t *source[4];
	const uint32_t *source2[4];
	int32_t pitch;
	int32_t count;
	int32_t dest_y;
	uint32_t texturefrac[4];
	uint32_t texturefracx[4];
	uint32_t iscale[4];
	uint32_t textureheight[4];
	uint32_t light[4];
	uint32_t srcalpha;
	uint32_t destalpha;

	uint16_t light_alpha;
	uint16_t light_red;
	uint16_t light_green;
	uint16_t light_blue;
	uint16_t fade_alpha;
	uint16_t fade_red;
	uint16_t fade_green;
	uint16_t fade_blue;
	uint16_t desaturate;
	uint32_t flags;
	enum Flags
	{
		simple_shade = 1,
		nearest_filter = 2
	};
};

struct DrawSpanArgs
{
	uint32_t *destorg;
	const uint32_t *source;
	int32_t destpitch;
	int32_t xfrac;
	int32_t yfrac;
	int32_t xstep;
	int32_t ystep;
	int32_t x1;
	int32_t x2;
	int32_t y;
	int32_t xbits;
	int32_t ybits;
	uint32_t light;
	uint32_t srcalpha;
	uint32_t destalpha;

	uint16_t light_alpha;
	uint16_t light_red;
	uint16_t light_green;
	uint16_t light_blue;
	uint16_t fade_alpha;
	uint16_t fade_red;
	uint16_t fade_green;
	uint16_t fade_blue;
	uint16_t desaturate;
	uint32_t flags;
	enum Flags
	{
		simple_shade = 1,
		nearest_filter = 2
	};
};

class LLVMDrawers
{
public:
	virtual ~LLVMDrawers() { }

	static void Create();
	static void Destroy();
	static LLVMDrawers *Instance();

	void(*DrawSpan)(const DrawSpanArgs *) = nullptr;
	void(*DrawSpanMasked)(const DrawSpanArgs *) = nullptr;
	void(*DrawSpanTranslucent)(const DrawSpanArgs *) = nullptr;
	void(*DrawSpanMaskedTranslucent)(const DrawSpanArgs *) = nullptr;
	void(*DrawSpanAddClamp)(const DrawSpanArgs *) = nullptr;
	void(*DrawSpanMaskedAddClamp)(const DrawSpanArgs *) = nullptr;

	void(*vlinec1)(const DrawWallArgs *) = nullptr;
	void(*vlinec4)(const DrawWallArgs *) = nullptr;
	void(*mvlinec1)(const DrawWallArgs *) = nullptr;
	void(*mvlinec4)(const DrawWallArgs *) = nullptr;
	void(*tmvline1_add)(const DrawWallArgs *) = nullptr;
	void(*tmvline4_add)(const DrawWallArgs *) = nullptr;
	void(*tmvline1_addclamp)(const DrawWallArgs *) = nullptr;
	void(*tmvline4_addclamp)(const DrawWallArgs *) = nullptr;
	void(*tmvline1_subclamp)(const DrawWallArgs *) = nullptr;
	void(*tmvline4_subclamp)(const DrawWallArgs *) = nullptr;
	void(*tmvline1_revsubclamp)(const DrawWallArgs *) = nullptr;
	void(*tmvline4_revsubclamp)(const DrawWallArgs *) = nullptr;

private:
	static LLVMDrawers *Singleton;
};