xm_image.h File Reference

Go to the source code of this file.

Defines
#define	XMESA_USE_PUTPIXEL_MACRO
#define	XMesaPutPixel(__i, __x, __y, __p)
Functions
XMesaImage *	XMesaCreateImage (int bitsPerPixel, int width, int height, char *data)
void	XMesaDestroyImage (XMesaImage *image)
unsigned long	XMesaGetPixel (XMesaImage *image, int x, int y)

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Define Documentation

#define XMESA_USE_PUTPIXEL_MACRO

Definition at line 37 of file xm_image.h.

#define XMesaPutPixel	(	__i,
		__x,
		__y,
		__p		)

Value:

{ \
    CARD8  *__row = (CARD8 *)(__i->data + __y*__i->bytes_per_line); \
    CARD8  *__i8; \
    CARD16 *__i16; \
    CARD32 *__i32; \
    switch (__i->bits_per_pixel) { \
    case 8: \
        __i8 = (CARD8 *)__row; \
        __i8[__x] = (CARD8)__p; \
        break; \
    case 15: \
    case 16: \
        __i16 = (CARD16 *)__row; \
        __i16[__x] = (CARD16)__p; \
        break; \
    case 24: /* WARNING: architecture specific code */ \
        __i8 = (CARD8 *)__row; \
        __i8[__x*3]   = (CARD8)(__p); \
        __i8[__x*3+1] = (CARD8)(__p>>8); \
        __i8[__x*3+2] = (CARD8)(__p>>16); \
        break; \
    case 32: \
        __i32 = (CARD32 *)__row; \
        __i32[__x] = (CARD32)__p; \
        break; \
    } \
}

Definition at line 44 of file xm_image.h.

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Function Documentation

XMesaImage* XMesaCreateImage	(	int	bitsPerPixel,
		int	width,
		int	height,
		char *	data
	)

void XMesaDestroyImage

(

XMesaImage *

image

)

unsigned long XMesaGetPixel	(	XMesaImage *	image,
		int	x,
		int	y
	)

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