On Fri, 29 Mar 2002, Marc Aurele La France wrote: > > > > While you are at it, you might wish to change the default colo[u]rkey > > > > from 0. Black is a common enough text colour; with Keith's patch > > > > highlighted text shows the video layer beneath :-)
> > > I stole a few lines from the R128 driver and stuck them into the radeon > > > driver. The video key is now configurable (option "videokey" "42") and > > > has a non-zero default value (30). > > > New diff is at: > > > http://keithp.com/~keithp/download/radeon_xv-2002-03-29.diff > > > I note that the config file uses the phrase "videokey" instead of > > > "colo[u]rkey". That conveniently avoids the spelling ambiguity... > > I just want to point out that GATOS code already supports this. > > As for 8bbp - I will insert the code to disable hardware Xv support in > > this case and print a meaningful message. > Just my 2 cents' worth. I don't think this is a good idea. It's not > necessary to do so in the Mach64 and R128 cases. > > As for Radeon colorkeying the reason we use RGB values is because Radeon > > no longer supports keying on the value of graphics pixel, rather it allows > > you to specify ranges of alpha and R, G, B so all graphics pixels that > > fall within them are replaced by video. The comparison is done _after_ > > Radeon has converted framebuffer value into internal 32bpp format. > Oh? An alpha channel for 8bpp? If so, where does it come from? The LUT > is only 3 * 768 long. Perhaps a specific alpha value can be used as the > key. Ooops. Synapse cross. I meant 3 * 256. Marc. +----------------------------------+-----------------------------------+ | Marc Aurele La France | work: 1-780-492-9310 | | Computing and Network Services | fax: 1-780-492-1729 | | 352 General Services Building | email: [EMAIL PROTECTED] | | University of Alberta +-----------------------------------+ | Edmonton, Alberta | | | T6G 2H1 | Standard disclaimers apply | | CANADA | | +----------------------------------+-----------------------------------+ XFree86 Core Team member. ATI driver and X server internals. _______________________________________________ Xpert mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xpert
