On Fri, Mar 05, 2004 at 01:38:06AM +0100, Thomas Winischhofer wrote:What exactly does a video driver have to be able to do if the SupportConvert32to24 flag is set at calling xf86SetDepthBpp, provided the hardware supports, for instance, 24bpp (framebuffer depth) only?
It has to use a framebuffer layer that can do this conversion. fb can, as can xf24_32bpp (if your driver uses cfb). The s3virge driver is an example that can still be run with the xf24_32bpp method, and it does the following to figure out what to load:
case 24: if (pix24bpp == 24) { mod = "cfb24"; reqSym = "cfb24ScreenInit"; } else { mod = "xf24_32bpp"; reqSym = "cfb24_32ScreenInit"; }
Most drivers use fb these days, and it has support for this built-in, and enabled automatically.
So it is save just to set these, I assume (since my driver uses fb). (Just wondered why the *driver* and not the layer taking care of this has to (not) set these.)
Thanks Mark and David.
Thomas
-- Thomas Winischhofer Vienna/Austria thomas AT winischhofer DOT net *** http://www.winischhofer.net twini AT xfree86 DOT org _______________________________________________ Devel mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/devel
