"Kenneth" <kdw### [at] gmailcom> wrote:
>
> Just to follow up:
> I have five different v3.8 'development versions' from Github (which run within
> v3.7.0), and I have tried them all: The new antialias mode is not recognized in
> any of them; they all revert to method 2. It seems that this new method was
> never actually implemented in these Windows development builds of 3.8x (or else
> maybe in one of the versions that I haven't yet tried??)...

Well, I was WRONG about that, and I apologize for the misinformation.

The new antialias Method 3 DOES work successfully in the *latest* v3.8
development build for Windows,   10064738+av694 ("experimental")

I thought I had tried that one-- it's in my collection-- but apparently not. (Or
maybe I mis-read the message pane at the time.) So I have finally been able to
do some tests with it, using all .png renders except for this final image.

My AA rendering values in my INI file were  somewhat basic:
Antialias=on
Sampling_method=3 (or 2)
Antialias_Threshold=0.05
Stochastic_Seed=7 (or not used at all)
(the other values/keywords are at their defaults)

The differenced images here are exaggerated of course, to show the pixel changes
of the jitter effect. (I also applied some sharpening in Photoshop, to show any
Moire patterns better.)

The 'automatic' use of AM3 jitter from render to render seems to work as
advertised. And with Stochastic_Seed 'on' (with some integer seed value), there
is NO pixel difference between renders, OR between rendered animation frames--
jitter is successfully turned off. That's good news for animations.

BTW, there is NO difference between two renders using AA method 2, even though
the message pane says that Jitter 1.0 is being used-- which agrees with
William's tests about previous versions of POV-ray, that NO default jitter is
applied. However, *specifying* an actual jitter value does work correctly, and
the message pane returns the correct value.  But from my own tests with this,
the method-2 render actually looks better with NO jitter (the apparent default
value.) With  Jitter_Amount=0.5, any possible Moire patterns in the render are
actually exaggerated(!), at least in conjunction with the rather 'basic' AA
values I used.

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