[Gamedevlists-brew] Getting pixel type from display.

[Steven H. <st...@ha...>]

Hi,
   I'm trying to write a set of routines to access the display buffer. =
In
order to do this I need to know the display type (Eg RGB565, 555, 444 =
etc)
or the device. This will allow me to select the appropriate blit routine =
and
so on. Below is the routine I'm using to do this. I know it will fail on =
any
devices that have palletised displays, I'll cross that bridge later...=20
Passing in the IBitmap obtained from the display should return the =
correct
type. I only have 1 handset to test on, so does this look like the way =
to
go? I've only tested it on a VX7000 and it reported 565 correctly. Any =
show
stoppers that will cause this to screw up? Am I missing some cunning
GETDISPLAYTYPE() call tucked away in the API somewhere instead?

Regards,

Steven Haggerty.

U8 GetColourFormatFromIBitmap(IBitmap *pBMP)
{
	RGBVAL rgb;
	NativeColor n;

	rgb =3D MAKE_RGB(255,0,255);
	n =3D IBITMAP_RGBToNative(pBMP,rgb);

	switch (n) {=09
		case 0xf81f   : return mcPixelFormat_RGB565;
		case 0x7c1f   : return mcPixelFormat_RGB555;
		case 0x0f0f   : return mcPixelFormat_RGB444;
		case 0xff00ff : return mcPixelFormat_RGB888;
		default       : return mcPixelFormat_None;
	}
}