Cousin Ricky <ric### [at] yahoocom> wrote:
> On 2022-01-13 10:06 (-4), Warren wrote:
> > Hi,
> > I post a message here, because I get a weird render with povray 3.8.0 beta 1 of
> > a scene with the following resolution : 1280x960 (see attached image with this
> > message) , you can see a white stain that has the shape of a heart near the
> > pentagram. When I render this same scene with stable v3.7.0 the white stain
> > doesn't appear. And even weird, when I render this scene with povray "3.8.0
> > beta1" but with the resolution of 640x480, I don't get this white stain in the
> > final image.
> What I've found so far:
> - The artifact varies with the image size. A 960x720 render leaves an
> oblong stain on the upper left vertex.
> - The artifact isn't completely absent with 640x480. At 640x480, tiny
> white spots appear along the veins of the pentagram, but they are
> absent in a 3.7 render. I presume that this means you did not put
> them there deliberately, and that they are related to the big heart-
> shaped stain.
> - 3.8 beta 2 does not solve the problem.
There are other things to consider:
- First off, set the boolean 'PlaceWell' (line 19 of main pov file) to false, to
get a faster rendering, the heart shape artifact being always there.
- Changing the minimum_reuse value from '0.015' to '0.01' make the 'heart shaped
artifact' to disappear, but the little white stains you talked about are there,
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