[PD] gem motion blur & alpha

[cyrille henry]

hello

Le 27/08/2017 à 03:05, andre rc a écrit :
> Hello,
> 
> I'm trying to apply motion blur only to one geo with gemframebuffer.
> It works fine until I add a background image: when I switch the gemframebuffer format from RGB to RGBA the amount of motion blur decrease considerably.
yes, since the feedback image became more and more transparent...


> 
> Is there a way to get the same amount of motion blur (long tail) with alpha on?
replace [color 1 1 1 0.95] with [color 0.95 0.95 0.95 1]

but that's not what you want since it will fade to black and not to transparent.


an other solution would be : you can alter the color of the feedback image by drawing a bit of the BG on top of it.

attachment example.

cheers
c

> Attached example.
> 
> thanks & regards,
> andre
> 
> 
> 
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