tsa96
commented
2 years ago The more I look at this the more confused I get, it seems to be occurring on every texture but only in certain places, maybe most commonly when nearby a brush that's positioned at an angle?? It's really bizarre, if there's not something obvious from the shader code it might be best if I make a test map to figure out exactly where this is and isn't happening. Don't have a ton of time right now but could jump over and help out with testing this if needed.
Describe the bug
Encountered some very strange distortion in the parallax calculations in the PBR shader on CrancK's WIP map. Some textures coords seems to be flying off to infinity or something at tiny grazing angles.
How To Reproduce
Open CrancK's map posted here and try looking at some walls from very sharp angles. https://discord.com/channels/235111289435717633/719632195982983308/927554954976178188
Map is compiled for Chaos so can't open to test on 0.8.7 I've looked at the heightmaps and they seem completely normal, so I'm confident it's an issue with the shader itself. However, this is occurring on both DX11 and DX9 so may not be caused by recent DX11 changes, I don't know when DX9 PBR was last compiled.
https://user-images.githubusercontent.com/35813309/148654616-76ea33a8-b310-4bb3-8668-0c6652e1e098.mp4
Expected Behavior
Sensible Parallax behaviour
Operating System
Windows
Renderer
DX11 (default)