Gaussian blurring a cube map?

malcolm

Anyone have any trick to gaussian blur a cupe map texture? I can generate a cube map but there will be seams in it if I blur it in photoshop. Ideally there would be some way to blur the map after its creation or generate a blurred map directly out of maya mental ray.

JohnnySix

Hmm, hard. You'd need to lay out each face with the surrounding edges touching, then make a + shaped selection and blur from there.

Maybe extending out the corner /edge pixels.

How much blur ?


Blah, pictures worth a thousand words - this is how I'd do it :

EarthQuake

check out a tool called cubemapgen

http://developer.amd.com/gpu/cubemapgen/pages/default.aspx

this should do exactly what you need

JohnnySix

.. or what earthquake said.

ImSlightlyBored

xnormal also does this I think under the guise of env map from cubemap

Slum

Some more info on the wiki:
http://wiki.polycount.net/Diffusely_Convolved_Cube_Map

malcolm

Thanks EarthQuake that tool saved the day.