Does anyone know what's causing this artifact? It happens when I make changes to a cockpit specular map. I'm using Photoshop to modify the map and the DDS Options to save the map are: Format: DXT5 Mipmap checked Filter: Box Alpha Channel: None View attachment 31733
Looks like you saved an already very compressed texture. I recommend working in lossless formats and then resaving for export only.
I created the specular map DDS file from a TIFF file and it wasn't compressed. I found that changing the shader from Bump Cube Specular Map Add Specular Reflect T1 to Bump Cube Specular Map T1 fixed it. No idea why the Bump Cube Specular Map Add Specular Reflect T1 was causing this problem.
For any old cube map shader, you will need to reduce Fresnel Reflect > Fresnel Min value (usual 0.01 works well), this happens often in old mods or from RF1/GTR2 etc, also track obects are affected as well. This can be easily batch edited with 3dsimed. Those old cube map shader has some interaction with track's ReflectionMapper=STATIC01 setting as well, if the track scn file is missing ReflectionMapper=STATIC01 lines, the old cube map shader value won't cause exaggerated reflection.
