Fog issue with TerrainMaterial/MixMaterial

[Jozef_Plata]

Hi, so I have a problem with fog on TerrainMaterial/MixMaterial:

No matter the fog type, it’s always thicker over default gltf assets materials (which are PBR Materials). If I dispose all PBR Materials and create StandardMaterials instead, the fog looks the same. However I’d prefer staying with PBR Materials on all assets.

Is there something I could do about that fog on TerrainMaterial/MixMaterial? So that the fog over PBR Materials and TerrainMaterial/MixMaterial looks the same?

[Tricotou]

Did you have a look at this topic ?

PBR Material weird color with FOG

The result is not the same because: in PBR, the fog color is converted to linear, then the final shader (linear) color is mixed with this linear fog color, then this color is converted to gamma space in standard mode, the fog color is a gamma color and is mixed with the final shader (gamma) color So, in PBR there’s a conversion to linear space before doing the computation, then a conversion to gamma space which yields a different result than doing all the computations in gamma space.

I think best is to use PBR everywhere if you need fog

[Jozef_Plata]

Yeah that’s what I thought, it’s because the two materials are way too different.

But do we have a PBR version of TerrainMaterial/MixMaterial?

[Evgeni_Popov]

No, these materials are external contributions and use custom shaders with custom lighting. Maybe you can try to use a node material instead?