[vtkusers] Rendering artifact at opacity<1
ken.martin at kitware.com
Wed Nov 8 08:29:43 EST 2017
Try using depth peeling to resolve the transparency.
* Turn on/off rendering of translucent material with depth peeling
* technique. The render window must have alpha bits (ie call
* SetAlphaBitPlanes(1)) and no multisample buffer (ie call
* SetMultiSamples(0) ) to support depth peeling.
* If UseDepthPeeling is on and the GPU supports it, depth peeling is used
* for rendering translucent materials.
* If UseDepthPeeling is off, alpha blending is used.
* Initial value is off.
On Wed, Nov 8, 2017 at 6:09 AM, marcin.krotkiewski <
marcin.krotkiewski at gmail.com> wrote:
> Dear developers,
> I am observing strange rendering artifacts on my triangulated surface when
> I use transparency. The artifacts are observed at certain angles only. I've
> attached 3 pictures:
> - opacity_1.png shows the model as it looks without transparency
> - opacity_09.png shows the model at an angle chosen such that the
> artifact on the surface is visible.
> - opacity_0.9_behind.png shows the same model with transparency rotated
> around to a view that does not show the artifact
> I am using vtk 8.0 with the OpenGL 2 rendering backend.
> Is this a bug, or am I doing sth wrong?
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Ken Martin PhD
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Clifton Park NY 12065
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