Convert cubemaps to sphere, DDS, etc.?

Eric Chadwick

I vaguely recall seeing a set of Photoshop actions that did this, but can't for the life of me remember where. Anyone know?

I gotta do some global gaussian filtering on some cubemaps, without the edge artifacts. Thus a spheremap would be better... I could pattern-fill a 3x3 grid, filter the middle one, crop, convert back to a cube.

I think it also converted six-bitmap-cubemap-to-one-bitmap-DDS...

Eric Chadwick

Hmmm, found it. But it isn't what I remembered.

Cube Map Shuffler
http://developer.nvidia.com/object/photoshop_dds_plugins.html

I tried using max 7's render to texture to convert a cubemap reflection into a long/lat map, but it's pretty sucky... it mirrors the reflection vertically, also munges the poles at top & bottom because of the sphere's UVs.

I thought of HDRShop but it doesn't handle six-bitmap cubes.

Help!

CrazyButcher

only know a simple cubemap to shperemap tool it is inside the demo at delphi3d.net

http://www.delphi3d.net/download/envmapdemos.zip

CrazyButcher

ah actually after reading what you want to do the ati tool came to my mind

http://www.ati.com/developer/cubemapgen/index.html

Eric Chadwick

Hey that could come in handy, it seems to be doing the gaussian filtering I need to do, and the right way. Awesome! Thanks man I appreciate this!