[osg-users] Clipping when using a shader

[OpenSceneGraph Users]

Yes, good idea. That should work. I can't really override the 
computeBoundingBox as I can't change the object hierarchy easily.

On Thursday, April 30, 2020 at 10:07:16 AM UTC-7, OpenSceneGraph Users 
wrote:
>
> Hi Andrew,
>
> you can use "setInitialBounds" to define your precompiled bounding box.
>
> - Werner Modenbach -
>
> Am 30.04.2020 um 19:01 schrieb OpenSceneGraph Users:
>
> Andrew,
> You have to override computeBoundingBox on your Geometry and expand it to 
> account for your vertex displacement.
>
> Glenn Waldron
>
>
> On Thu, Apr 30, 2020 at 12:56 PM OpenSceneGraph Users <
> osg-... at lists.openscenegraph.org <javascript:>> wrote:
>
>> Hi,
>> I am using a simple displacement vertex shader to animate a displacement 
>> field on a geometry.
>>
>> I am having an issue where during the animation the geometry is getting 
>> clipped by the near/far planes that are automatically maintained by OSG - 
>> obviously OSG knows nothing about the displacements of the shader.
>>
>> Any suggestions as to solve this issue in the most simple manner. I would 
>> like to avoid having to maintain my own near/far planes. I was hoping OSG 
>> had a user-definable "fudge" factor for near/far...
>>
>> Andrew
>>
>>
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