White pixels in render output

[hieronymusanthonius]

Can somebody explain how those white pixels occur ? ( and how to reduce them )

Thanks in advance

[jeffamstutz]

The amount of artifacts you are seeing is definitely not normal and looks like something is wrong (maybe a bug?).

Can you provide any details about what you are rendering? (ex: spp, number of frames refined, lights/materials used, etc.) Ideally we would like to reproduce this ourselves, either by directly rendering your scene (if allowed) or in a small proxy scene representative of what you are doing.

@johguenther thoughts or ideas?

[hieronymusanthonius]

I am using a spotlight and an ambient light in the scene. When I remove the spotlight the effect is gone.

The geometry is constructed from custom 3D file format , but are all triangles.

I used mostly obj materials with 2d textures.

Op 11 apr. 2019 om 21:34 heeft Jefferson Amstutz notifications@github.com het volgende geschreven:

The amount of artifacts you are seeing is definitely not normal and looks like something is wrong (maybe a bug?).

Can you provide any details about what you are rendering? (ex: spp, number of frames refined, lights/materials used, etc.) Ideally we would like to reproduce this ourselves, either by directly rendering your scene (if allowed) or in a small proxy scene representative of what you are doing.

@johguenther thoughts or ideas?

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[johguenther]

A workaround is (probably) to set the renderer parameter "maxContribution" to something like 5. Does the spotlight have a radius > 0?

[hieronymusanthonius]

The radius was always set to 1, when I increase the artifacts disappear, thanks a lot