[Bf-cycles] ray epsilon and transparent objects
3dsakr at gmail.com
Wed Jun 3 18:13:46 CEST 2015
the links for image and blend files in case the last message was too large.
On Wed, Jun 3, 2015 at 6:09 PM, Mohamed Sakr <3dsakr at gmail.com> wrote:
> here is a test scene
> and the image, with a marker over error parts.
> On Wed, Jun 3, 2015 at 6:05 PM, Sergey Sharybin <sergey.vfx at gmail.com>
>> I guess it is about storing "near clip" (aka ray->tnear from some other
>> render engines terminology). We indeed don't have because we're pushing ray
>> forward on surface bounce. See ray_offset() functions for example. It has
>> own upsides and downsides.
>> There's a patch  where i've been experimenting with changing it to
>> ray->tnear approach in order to solve some numerical instabilities in the
>> watertight intersection code, still some work to be done there tho.
>> In any case, as Antony already pointed out sharing .blend file which
>> demonstrates the issue makes investigation much simplier.
>>  https://developer.blender.org/D1212
>> On Wed, Jun 3, 2015 at 8:47 PM, Antony Riakiotakis <kalast at gmail.com>
>>> An image and blend file would go a long way in making things clearer.
>>> Bf-cycles mailing list
>>> Bf-cycles at blender.org
>> With best regards, Sergey Sharybin
>> Bf-cycles mailing list
>> Bf-cycles at blender.org
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