Le_Forgeron <lef### [at] freefr> wrote:
> Le 12/11/2010 11:36, Tek a écrit :
>
> > Quite simply, I have no way to guarantee, or even to make it likely, that pixels
> > on the next frame will use a different blur sample to this frame.
> >
>
> If you use a deterministic pattern (whatever it be, with high contrast
> area in <0,0><1,1>...) then from frame to frame, you can rotate and
> translate it as your seed wants to govern it. you might for instance use
> a checkered b&w, scaled to 1/10 (so that's potentially 50 spots out of
> 100), rotated on the plane by a random value (your choice of seed),
> translated randomly...

I'm pretty sure that's what I just said.

e.g. I sample the bokeh filter for a pixel this frame and it hits a white bit,
so the sample goes through in that position. On the next frame I try to sample
the exact same position (because the halton sequence is the same), but I've
animated the bokeh pattern so there's a 50% chance it will hit white again. If
it does then the sample is in the same position, not animated.

So 50% of the noise from one frame to the next will be identical, not random. Am
I missing something?

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