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[directfb-users] Re: pixelformat on cle266 overlay
On 11/14/2003 04:46 PM, Ville Syrjälä wrote: > Set the buffermode to backvideo. Thanks! This eliminates the flickering. What's interesting is that in df_window.c, it first checks the card caps for alphachannel and coloralpha. If either one is unavailable, it sets buffermode to backsystem. Else, it use the default mode, which is, in my case, frontonly. For my cle266, both alphachannel and coloralpha are available for both layers (primary and cle266 overlay), so it uses the default frontonly. The flickering only occurs on the overlay, but not the primary. I don't understand why it uses backsystem when either alpha things is unavailabe. > YUV support is probably the number one reason for using overlays. Another > good reason is hw scaling. AFAIK, there are two video input ports (VIP) and one bt.656 on cle266. So I guess the overlay is for these video capture stuffs. If so, I think I should just keep using the primary layer only, since when I get the overlay layer, it just blanks out the screen and doesn't seem to be alpha blended with the primary layer. What do you think? Selwyn -- Info: To unsubscribe send a mail to firstname.lastname@example.org with "unsubscribe directfb-users" as subject.