16bpp bitmap surfaces

Functions
u32	sbmp16_get_pixel (const TSurface *src, int x, int y)
	Get the pixel value of src at (x, y).
void	sbmp16_plot (const TSurface *dst, int x, int y, u32 clr)
	Plot a single pixel on a 16-bit buffer.
void	sbmp16_hline (const TSurface *dst, int x1, int y, int x2, u32 clr)
	Draw a horizontal line on an 16bit buffer.
void	sbmp16_vline (const TSurface *dst, int x, int y1, int y2, u32 clr)
	Draw a vertical line on an 16bit buffer.
void	sbmp16_line (const TSurface *dst, int x1, int y1, int x2, int y2, u32 clr)
	Draw a line on an 16bit buffer.
void	sbmp16_rect (const TSurface *dst, int left, int top, int right, int bottom, u32 clr)
	Draw a rectangle in 16bit mode.
void	sbmp16_frame (const TSurface *dst, int left, int top, int right, int bottom, u32 clr)
	Draw a rectangle in 16bit mode.
void	sbmp16_blit (const TSurface *dst, int dstX, int dstY, uint width, uint height, const TSurface *src, int srcX, int srcY)
	16bpp blitter. Copies a rectangle from one surface to another.
void	sbmp16_floodfill (const TSurface *dst, int x, int y, u32 clr)
	Floodfill an area of the same color with new color clr.
INLINE void	_sbmp16_plot (const TSurface *dst, int x, int y, u32 clr)
	Plot a single pixel on a 16-bit buffer; inline version.
INLINE u32	_sbmp16_get_pixel (const TSurface *src, int x, int y)
	Get the pixel value of src at (x, y); inline version.

Detailed Description

Routines for 16bpp linear surfaces. For use in modes 3 and 5. Can also be used for regular tilemaps to a point.

Function Documentation

sbmp16_blit()

void sbmp16_blit	(	const TSurface *	dst,
		int	dstX,
		int	dstY,
		uint	width,
		uint	height,
		const TSurface *	src,
		int	srcX,
		int	srcY
	)

16bpp blitter. Copies a rectangle from one surface to another.

Parameters

dst	Destination surface.
dstX	Left coord of rectangle on dst.
dstY	Top coord of rectangle on dst.
width	Width of rectangle to blit.
height	Height of rectangle to blit.
src	Source surface.
srcX	Left coord of rectangle on src.
srcY	Top coord of rectangle on src.

Note

The rectangle will be clipped to both src and dst.

References memcpy16().

sbmp16_floodfill()

void sbmp16_floodfill	(	const TSurface *	dst,
		int	x,
		int	y,
		u32	clr
	)

Floodfill an area of the same color with new color clr.

Parameters

dst	Destination surface.
x	X-coordinate.
y	Y-coordinate;
clr	Color.

References sbmp16_floodfill_internal().

sbmp16_frame()

void sbmp16_frame	(	const TSurface *	dst,
		int	left,
		int	top,
		int	right,
		int	bottom,
		u32	clr
	)

Draw a rectangle in 16bit mode.

Parameters

dst	Destination surface.
left	Left side of rectangle;
top	Top side of rectangle.
right	Right side of rectangle.
bottom	Bottom side of rectangle.
clr	Color.

Note

Does normalization, but not bounds checks.

PONDER: RB in- or exclusive?

References memset16().

sbmp16_hline()

void sbmp16_hline	(	const TSurface *	dst,
		int	x1,
		int	y,
		int	x2,
		u32	clr
	)

Draw a horizontal line on an 16bit buffer.

Parameters

dst	Destination surface.
x1	First X-coord.
y	Y-coord.
x2	Second X-coord.
clr	Color.

Note

Does normalization, but not bounds checks.

References memset16().

sbmp16_line()

void sbmp16_line	(	const TSurface *	dst,
		int	x1,
		int	y1,
		int	x2,
		int	y2,
		u32	clr
	)

Draw a line on an 16bit buffer.

Parameters

dst	Destination surface.
x1	First X-coord.
y1	First Y-coord.
x2	Second X-coord.
y2	Second Y-coord.
clr	Color.

Note

Does normalization, but not bounds checks.

sbmp16_plot()

void sbmp16_plot	(	const TSurface *	dst,
		int	x,
		int	y,
		u32	clr
	)

Plot a single pixel on a 16-bit buffer.

Parameters

dst	Destination surface.
x	X-coord.
y	Y-coord.
clr	Color.

Note

Slow as fuck. Inline plotting functionality if possible.

sbmp16_rect()

void sbmp16_rect	(	const TSurface *	dst,
		int	left,
		int	top,
		int	right,
		int	bottom,
		u32	clr
	)

Draw a rectangle in 16bit mode.

Parameters

dst	Destination surface.
left	Left side of rectangle;
top	Top side of rectangle.
right	Right side of rectangle.
bottom	Bottom side of rectangle.
clr	Color.

Note

Does normalization, but not bounds checks.

References memset16().

Referenced by bmp16_erase(), and se_erase().

sbmp16_vline()

void sbmp16_vline	(	const TSurface *	dst,
		int	x,
		int	y1,
		int	y2,
		u32	clr
	)

Draw a vertical line on an 16bit buffer.

Parameters

dst	Destination surface.
x	X-coord.
y1	First Y-coord.
y2	Second Y-coord.
clr	Color.

Note

Does normalization, but not bounds checks.