CW or CCW triangles ignored by the render engine

RenderKit / ospray

An Open, Scalable, Portable, Ray Tracing Based Rendering Engine for High-Fidelity Visualization

http://ospray.org

Apache License 2.0

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CW or CCW triangles ignored by the render engine #545

Open ArchlineXP opened 1 year ago

ArchlineXP commented 1 year ago

Is there any way to ignore the CW or CCW triangles during rendering? Some objects are rendered incorrectly, miscolored triangles appear on the surface instead of the color I set. I attached a photo of it. OSPRay Render

johguenther commented 1 year ago

No, there is no backface-culling in OSPRay. The artifacts on the chairs indeed look like z-fighting: are there multiple surfaces overlapping at the same spot (two chairs put in each other)? Maybe also the vertex-normals are too extreme (parallel to the surface). Which material is used? Do the artifacts also appear with the SciVis renderer / OBJ material?