CUSTOM MATERIALS

[Argoon]

Power of 2 textures are required for dds format because that's what GPU's like, some old GPU's don't even render non power of 2 textures, dds is also a file format made by Nvidia especially optimized for GPU's and should always be used if supported by the game engine, dds dx1 should be used for simple diffuse textures and dds dx5 should be used for normal maps and transparent textures (alpha map), to export dds textures you can use the nvidia plugin for photoshop or even use the free paint.net image editing program.

Having said that the wulfen textures should already be power of 2 because Doom 3 also requires that.

For the ones that don't know power of two textures can be.

32x32
64x64
64x32 or 32x64
128x128
512x512
512x128 or 128x512
1024x1024
1024x512 or 512x1024
2048x2048
1024x2048 or 2048x1024
etc
etc