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#ifndef __ROPS_H__
#define __ROPS_H__

/*
	Raster Operations macros 
*/

// -------------
// RGB_565
// a.red = a.red - b.red
// a.blue = a.blue - b.blue
// a.green = a.green - b.green
/*
#define ROP_SUB(a, b) \
			"	bics	" #b ", " #b ", #0b00000100000100000	\n"\
			"	orr	" #a ", " #a ", #0b00000100000100000	\n"\
			"	orr	" #a ", " #a ", #0b10000000000000000	\n"\
			"	sub	" #a ", " #a ", " #b " 			\n"\
			"	tst	" #a ", #0b00000000000100000	\n"\
			"	biceq	" #a ", " #a ", #0b00000000000011111	\n"\
			"	tst	" #a ", #0b00000100000000000	\n"\
			"	biceq	" #a ", " #a ", #0b00000011111100000	\n"\
			"	tst	" #a ", #0b10000000000000000	\n"\
			"	biceq	" #a ", " #a ", #0b01111100000000000	\n"
*/
#define ROP_SUB(a, b) \
			"	bics	" #b ", " #b ", #0b00000100000100000	\n"\
			"	beq	999f	\n"\
			"	orr	" #a ", " #a ", #0b00000100000100000	\n"\
			"	orr	" #a ", " #a ", #(1 << 31)	\n"\
			"	subs	" #a ", " #a ", " #b " 			\n"\
			"	bicpl	" #a ", " #a ", #0b01111100000000000	\n"\
			"	tst	" #a ", #0b00000000000100000	\n"\
			"	biceq	" #a ", " #a ", #0b00000000000011111	\n"\
			"	tst	" #a ", #0b00000100000000000	\n"\
			"	biceq	" #a ", " #a ", #0b00000011111100000	\n"\
			"999:\n"


// -------------
// RGB_565
// if ZF set do ROP_SUB, else:
// a.red = (a.red - b.red) / 2
// a.blue = (a.blue - b.blue) / 2
// a.green = (a.green - b.green) / 2
/*
#define ROP_SUB1_2(a, b) \
			"	movne	" #a ", " #a ", lsr #1			\n"\
			"	bicne	" #a ", " #a ", #0b00000010000010000	\n"\
			"	movne	" #b ", " #b ", lsr #1			\n"\
			"	bicne	" #b ", " #b ", #0b00000010000010000	\n"\
										\
			"	bic	" #b ", " #b ", #0b00000100000100000	\n"\
			"	orr	" #a ", " #a ", #0b00000100000100000	\n"\
			"	orr	" #a ", " #a ", #0b10000000000000000	\n"\
			"	sub	" #a ", " #a ", " #b " 			\n"\
			"	tst	" #a ", #0b00000000000100000	\n"\
			"	biceq	" #a ", " #a ", #0b00000000000011111	\n"\
			"	tst	" #a ", #0b00000100000000000	\n"\
			"	biceq	" #a ", " #a ", #0b00000011111100000	\n"\
			"	tst	" #a ", #0b10000000000000000	\n"\
			"	biceq	" #a ", " #a ", #0b01111100000000000	\n"
*/

#define ROP_SUB1_2(a, b) \
			"	movne	" #a ", " #a ", lsr #1			\n"\
			"	bicne	" #a ", " #a ", #0b00000010000010000	\n"\
			"	movne	" #b ", " #b ", lsr #1			\n"\
			"	bicne	" #b ", " #b ", #0b00000010000010000	\n"\
										\
			"	bics	" #b ", " #b ", #0b00000100000100000	\n"\
			"	beq	999f \n"\
			"	orr	" #a ", " #a ", #0b00000100000100000	\n"\
			"	orr	" #a ", " #a ", #(1 << 31)	\n"\
			"	subs	" #a ", " #a ", " #b " 			\n"\
			"	bicpl	" #a ", " #a ", #0b01111100000000000	\n"\
			"	tst	" #a ", #0b00000000000100000	\n"\
			"	biceq	" #a ", " #a ", #0b00000000000011111	\n"\
			"	tst	" #a ", #0b00000100000000000	\n"\
			"	biceq	" #a ", " #a ", #0b00000011111100000	\n"\
			"999:\n"


// -------------
// RGB_565
// a.red = a.red + b.red
// a.blue = a.blue + b.blue
// a.green = a.green + b.green
#define ROP_ADD(a, b) \
			"	bics	" #b ", " #b ", #0b00000100000100000	\n"\
			"	beq	999f \n"\
			"	bic	" #a ", " #a ", #0b00000100000100000	\n"\
			"	add	" #a ", " #a ", " #b " 			\n"\
			"	tst	" #a ", #0b00000000000100000	\n"\
			"	orrne	" #a ", " #a ", #0b00000000000011111	\n"\
			"	tst	" #a ", #0b00000100000000000	\n"\
			"	orrne	" #a ", " #a ", #0b00000011111100000	\n"\
			"	tst	" #a ", #0b10000000000000000	\n"\
			"	orrne	" #a ", " #a ", #0b01111100000000000	\n"\
			"999:\n"

// -------------
// RGB_565
// if ZF set do ROP_ADD, else:
// a.red = (a.red + b.red) / 2
// a.blue = (a.blue + b.blue) / 2
// a.green = (a.green + b.green) / 2
#define ROP_ADD1_2(a, b) \
			"	bic	" #a ", " #a ", #0b00000100000100000	\n"\
			"	bicne	" #a ", " #a ", #0b00001000001000000	\n"\
			"	bic	" #b ", " #b ", #0b00000100000100000	\n"\
			"	bicne	" #b ", " #b ", #0b00001000001000000	\n"\
			"	add	" #a ", " #a ", " #b "			\n"\
			"	movne	" #a ", " #a ", lsr #1			\n"\
			"	tst	" #a ", #0b00000000000100000	\n"\
			"	orrne	" #a ", " #a ", #0b00000000000011111	\n"\
			"	tst	" #a ", #0b00000100000000000	\n"\
			"	orrne	" #a ", " #a ", #0b00000011111100000	\n"\
			"	tst	" #a ", #0b10000000000000000	\n"\
			"	orrne	" #a ", " #a ", #0b01111100000000000	\n"


typedef struct {
	unsigned char line;
	unsigned char rop;
	unsigned int value;
} ROPSTRUCT;

#define MAX_ROPS	0x10000
extern ROPSTRUCT rops[MAX_ROPS];
extern unsigned int ROpCount;

#define ROP_NOP			0
#define ROP_FIXEDCOLOUR		1
#define ROP_PALETTE		2
#define ROP_SCREEN_MODE		3
#define ROP_BRIGHTNESS		4
#define ROP_FORCE_BLANKING	5
#define ROP_TILE_ADDRESS	6
#define ROP_MOSAIC		7
#define ROP_BG_SCSIZE_SCBASE	8
#define ROP_BG_NAMEBASE		9
#define ROP_MODE7_ROTATION	10
#define ROP_BG_WINDOW_ENABLE	11
#define ROP_WINDOW1_LEFT	12
#define ROP_WINDOW1_RIGHT	13
#define ROP_WINDOW2_LEFT	14
#define ROP_WINDOW2_RIGHT	15
#define ROP_BG_WINDOW_LOGIC	16
#define ROP_OBJS_WINDOW_LOGIC	17
#define ROP_MAIN_SCREEN_DESIG	18
#define ROP_SUB_SCREEN_DESIG	19
#define ROP_MAIN_SCREEN_WMASK	20
#define ROP_SUB_SCREEN_WMASK	21
#define ROP_FIXEDCOL_OR_SCREEN	22
#define ROP_ADD_OR_SUB_COLOR	23

#define ADD_ROP(drop, dval)	{rops[ROpCount].line = IPPU.CurrentLine; rops[ROpCount].rop = drop; rops[ROpCount].value = dval; ROpCount++;}
#define RESET_ROPS(from)	\
	{ \
	for (unsigned int c = from; c < ROpCount; c++) doRaster(&rops[c]);\
	ROpCount = 0;\
	}

void doRaster(ROPSTRUCT *rop);
bool wouldRasterAlterStatus(ROPSTRUCT *rop);

#endif