[Bf-cycles] Possible Transparent BSDF bug?

[Brecht Van Lommel]

I managed to reproduce some noise now with a monkey on a plane. It's
not quite an outline of the object but some noise in various places,
maybe what you are referring to?

Increasing the transparent bounces solves that particular issue. The
reason it happens is because some rays that bounce to the background
need to go through more than 8 transparent surfaces. The transparent
max number counts all intersections starting from the camera through
the monkey, on to the plane, and then in some random direction through
the monkey again to the background.

On Fri, May 3, 2013 at 2:03 AM, Matthew Heimlich
<matt.heimlich at gmail.com> wrote:
> I should also note that it only happens when the transparent object is
> in front of another object. I'm just using a Suzanne head, nothing
> complex.
>
> On Thu, May 2, 2013 at 7:55 PM, Matthew Heimlich
> <matt.heimlich at gmail.com> wrote:
>> On my second test it would appear that it only happens with the
>> progressive integrator, not the non-prog.
>>
>> On Thu, May 2, 2013 at 5:29 PM, Brecht Van Lommel
>> <brechtvanlommel at pandora.be> wrote:
>>> I tried a few scenes and can't see this. Mostly likely it's a
>>> self-intersection issue due to float precision.
>>>
>>> On Thu, May 2, 2013 at 10:57 PM, Matthew Heimlich
>>> <matt.heimlich at gmail.com> wrote:
>>>> When using a transparent BSDF set to pure white, an outline of the
>>>> object it's on can be seen until quite a few passes have gone through.
>>>> Is this a bug, or an intended feature of the Transparent shader?
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