Re: OT: overlay and clipping

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Reply to the mail from Franz Reinhardt (fre@xxxxxxxxxx):

> 
> If the adapter overlays an image from offscreen memory, which is 
> rectangular, how the clipping is done ? 

Every pixel in the target area of the overlay which has the special drop-out-color which you defined somewhere, 
will be replaced by the overlay image. Pixels with another color won�t get replaced and thus show the 
framebuffer contents. 

I hope this is what you wanted to know...


 -Arne



> 
> How can I tell the hardware, when the visible framebuffer is shown and 
> when a piece of the overlay is shown ? 
> 
> TIA,
> 
> Franz
> 
> 
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