File Description

VGA layers.

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Data Structures
struct	sLayerProg

struct	sLayerMode

struct	sLayer
	Layer screen descriptor (on change update SLAYER_* in define.h) More...

struct	sSprite
	Sprite (on change update SSPRITE_* in define.h) More...

Macros
#define	VGADARK(num, col) (((u32)(vga_offset_dark+BASE_OFFSET)<<27) \| ((u32)(num)<<8) \| (u32)(col))

#define	VGACMD(jmp, num) (((u32)(jmp)<<27) \| (u32)(num))

#define	VGAKEY(delay, num, col) (((u32)((delay)+1)<<19) \| ((u32)(col)<<11) \| (u32)((num)-1))

#define	VGAMONO(delay, num, col) (((u32)((delay)+0)<<20) \| ((u32)(col)<<12) \| ((u32)((num)-1)<<1) \| B0)

#define	VGACOLOR(delay, num) (((u32)((delay)+2)<<20) \| ((u32)0xff<<12) \| ((u32)((num)-1)<<1) \| 0)

#define	VGABLACK(delay, num) (((u32)((delay)+3)<<16) \| (u32)((num)-1))

#define	VGAWHITE(delay, num) (((u32)((delay)+3)<<16) \| (u32)((num)-1))

#define	VGARLE(delay) ((delay)+1)

#define	BYTESWAP(n) ((((n)&0xff)<<24)\|(((n)&0xff00)<<8)\|(((n)&0xff0000)>>8)\|(((n)&0xff000000)>>24))

#define	ALIGN4(x) ((x) & ~3)

Functions
void	LayerOn (u8 inx)
	Set overlapped layer 1..3 ON. More...

void	LayerOff (u8 inx)
	Set overlapped layer 1..3 OFF. More...

void	LayerSetX (u8 inx, s16 x)
	Set coordinate X of overlapped layer. More...

void	LayerSetY (u8 inx, s16 y)
	Set coordinate Y of overlapped layer. More...

void	LayerSetW (u8 inx, u16 w)
	Set width of image of overlapped layer. More...

void	LayerSetH (u8 inx, u16 h)
	Set height of image of overlapped layer. More...

void	LayerSetup (u8 inx, const u8 img, const sVmode vmode, u16 w, u16 h, u8 col=0, const void *par=NULL)
	Setup overlapped layer 1..3 (not for sprites or perspective mode) More...

void	LayerPerspSetup (u8 inx, const u8 img, const sVmode vmode, u16 w, u16 h, u8 xbits, u8 ybits, s8 horiz, const int *mat, u8 col=0)
	Setup overlapped layer 1..3 for LAYERMODE_PERSP* modes. More...

void	LayerSpriteSetup (u8 inx, sSprite *sprite, u16 spritenum, const sVmode vmode, s16 x, s16 y, u16 w, u16 h, u8 col=0)
	Setup overlapped layer 1..3 for LAYERMODE_SPRITE* and LAYERMODE_FASTSPRITE* modes. More...

void	SpritePrepLines (const u8 img, u8 x0, u8 *w0, u16 w, u16 h, u16 wb, u8 col, Bool fast)
	Prepare array of start and length of lines (detects transparent pixels) More...

void	SortSprite (sSprite **list, int num)
	Sort fast sprite list by X coordinate. More...

Variables
const sLayerProg	LayerProg [LAYERPROG_NUM]

u8	LayerProgInx

sLayerProg	CurLayerProg

const sLayerMode	LayerMode [LAYERMODE_NUM]

u8	LayerModeInx [LAYERS]

sLayerMode	CurLayerMode [LAYERS]

u8	LayerMask

sLayer	LayerScreen [LAYERS]
	Current layer screens.

u8	LayerFirstPin [LAYERS_MAX]
	Index of first pin of layer (base layer should stay VGA_GPIO_FIRST)

u8	LayerNumPin [LAYERS_MAX]
	Number of pins of overlapped layer (base layer should stay VGA_GPIO_OUTNUM)

Data Structures