Blend Flags
[Memory map bit(fields)]

Macros for REG_BLDCNT, REG_BLDY and REG_BLDALPHA. More...

Blend weights
#define	BLD_EVA_MASK   0x001F
#define	BLD_EVA_SHIFT   0
#define	BLD_EVA(n)   ((n)<<BLD_EVA_SHIFT)
#define	BLD_EVB_MASK   0x1F00
#define	BLD_EVB_SHIFT   8
#define	BLD_EVB(n)   ((n)<<BLD_EVB_SHIFT)
#define	BLDA_BUILD(eva, evb)   ( ((eva)&31) | (((evb)&31)<<8) )
Fade levels
#define	BLDY_MASK   0x001F
#define	BLDY_SHIFT   0
#define	BLDY(n)   ((n)<<BLD_EY_SHIFT)
#define	BLDY_BUILD(ey)   ( (ey)&31 )
Defines
#define	BLD_BG0   0x0001
	\ name Blend control
#define	BLD_BG1   0x0002
	Blend bg 1.
#define	BLD_BG2   0x0004
	Blend bg 2.
#define	BLD_BG3   0x0008
	Blend bg 3.
#define	BLD_OBJ   0x0010
	Blend objects.
#define	BLD_ALL   0x001F
	All layers (except backdrop).
#define	BLD_BACKDROP   0x0020
	Blend backdrop.
#define	BLD_OFF   0
	Blend mode is off.
#define	BLD_STD   0x0040
	Normal alpha blend (with REG_EV).
#define	BLD_WHITE   0x0080
	Fade to white (with REG_Y).
#define	BLD_BLACK   0x00C0
	Fade to black (with REG_Y).
#define	BLD_TOP_MASK   0x003F
#define	BLD_TOP_SHIFT   0
#define	BLD_TOP(n)   ((n)<<BLD_TOP_SHIFT)
#define	BLD_MODE_MASK   0x00C0
#define	BLD_MODE_SHIFT   6
#define	BLD_MODE(n)   ((n)<<BLD_MODE_SHIFT)
#define	BLD_BOT_MASK   0x3F00
#define	BLD_BOT_SHIFT   8
#define	BLD_BOT(n)   ((n)<<BLD_BOT_SHIFT)
#define	BLD_BUILD(top, bot, mode)   ( (((bot)&63)<<8) | (((mode)&3)<<6) | ((top)&63) )

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Detailed Description

Macros for REG_BLDCNT, REG_BLDY and REG_BLDALPHA.

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Define Documentation

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