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Little white dots
Posted: 04 October 2012 01:13 AM   [ Ignore ]
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I’m building a vegetation shader and there’s these little light dots that show up in the render right where the highlights are. I can get rid of them by making the surface matte finish but I want it to have a bit of a sheen to it.

What value should I be looking at tweaking to get rid of these dots?

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Posted: 04 October 2012 01:42 AM   [ Ignore ]   [ # 1 ]
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Specular/glossy and basic lighting model (Plastic/metallic/skin/etc…)

Does this shader use displacement to add ‘3d-ness’ to the vegetation?

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Posted: 04 October 2012 03:04 AM   [ Ignore ]   [ # 2 ]
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Yes, there’s a slight displacement added.

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Posted: 04 October 2012 06:22 AM   [ Ignore ]   [ # 3 ]
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Hmmm… it seems to be showing up on other surfaces too that have displacement even with matte surfaces.

 

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Posted: 04 October 2012 06:26 AM   [ Ignore ]   [ # 4 ]
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Deep Shadow Map renders the artifacts as orange squares.

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Posted: 04 October 2012 06:32 AM   [ Ignore ]   [ # 5 ]
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Yes this is a known issue with mapped shadows. Either move the cam a touch and rerender or use Ray Traced Shadows to fix.

The graininess maybe coming form the Advanced Render Settings Shading Rate being to low a quality. 0.20 is a good place to start. Depending on light and surfaces I sometimes have to increase the quality it to 0.10

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