I have a cubemap that I am using for a space sky sphere, I have created the cube map following the instructions set out in the docs, everything goes fine and the texture maps to the mesh correctly however, the texture is modified by the importer which changes the scaling which leads to a blurred texture I guess because the pixels are re sampled and stretched.
What should I be doing here to avoid the blurring? I’ve tried with textures of varying sizes so 512 x 512, 1024 x 1024 (6 images of each for each axis) but its always the same blurry image after importing as the image looks fine in Photoshop.
It sounds like this passage from the docs is what is happening:
“The cubemap used for ambient lighting. The texture should be created by importing a .hdr image in the longitude/latitude sphere unwrapping format. The engine automatically precomputes blurry versions of the texture and stores the result in one cubemap texture. The lower resolution mips of the texture store the diffuse preconvolved version of the HDR environment.”
You will want to open the Texture in the Engine and change the Mip Gen Settings under Level of Detail. You can try a few but one of the Sharpen ones should fix up the blurry problem you are getting.