Forums > Jitter

sparkly pixels on model edges and surfaces


rtech
Jun 10 2011 | 2:28 am

I am getting little white pixels on the edges and surface of my models. Also at the point where different angled surfaces connect. It’s only apparent on complex models though. Seems to correlate a bit also to near_clipping plane value. Just wondering if anyone offhand knows what could cause this?


Ed
Jun 11 2011 | 5:19 am

I’m not a modelling guy but I’ve seen this sort of thing before from overlapping polygons if that helps at all.


vade
Jun 16 2011 | 10:15 pm

Blend mode and depth test mode also can contribute to this. less than vs less than equal for depth test perhaps? without images its hard to say.


rtech
Jun 20 2011 | 5:53 am

Thanks for the help. I've not heard of depth test mode before.

Here are a few images. The first has 3 small spots that I've circled in red. The other screenshot has these dots all around the edges.

[attachment=164653,2375] [attachment=164653,2376]

Attachments:
  1. edgestars2.jpg

    edgestars2.jpg


vade
Jun 20 2011 | 3:45 pm

That may be a normals issue. You could try looking at your model with the normal visualizer shader and see if you note any aberrant pixels. Like I said, its hard to know without more specifics. Sometimes importing a model into a editor and re-exporting it cleans up values.

3D is complicated. Welcome to the pain.


efe
Jun 20 2011 | 3:59 pm

Vade:
if there would be a ‘like it’ button in the jitter forums it would be pressed just right now!
Indeed, welcome to the pain

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