Glynn Clements a écrit : > hd wrote: > > >> I my app, I receive a raw image in 16 bits depth. >> My defaut visual have a depth of 24 bits (and all other Visual have 24 >> or 32bits depth on my X server). >> >> To display the bitmap I try to create an XImage with XCreateImage() and >> display it with XPutImage(). >> But X displays a "bad match" error >> >> If I try to display a "raw image" with the same depth (24bits) as the >> visual (24bits), my app works. >> >> Question : XImage APIs (XCreateImage() / XPutImage() / ...) can convert >> 'on the fly' the depth of the bitmap to match the visual depth >> or must I convert myself the raw bitmap to match the visual depth ? >> (convert each pixel from 16bits to 24 bits) >> > > You must convert yourself, or use a higher-level interface. The core X > protocol doesn't do format conversions. > > If you want the conversion to be done in hardware, look at OpenGL or > XRender. It's implementation-dependent whether either of these > supports a specific format (other than 24-bit RGB), so you still need > to provide a software conversion. > thanks a lot for your help. regards
_______________________________________________ xorg mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/xorg
