How to create DDS Cubemaps from HDR Images?

Pedro Amorim

So, yeah. The title says it all.
How would one go on to create dds cubemaps for ambient light and reflection based on HDR images?

Thanks!

Ben Cloward

This is the tool you want to use:

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

There are links on that page to documentation. Read through that and post again if you have more specific questions.

Pedro Amorim

oh sweet ben!
I will take a look at this and see if i can work with it
thanks!

kodde

dustinbrown wrote: »

Essentially, if you have an HDR probe file, you use HDR Shop to convert it to the cross format, then you use CubeMapGen to save it as a DDS. I've heard you can use CubeMapGen as a plugin within HDR Shop, but I've never been able to get it to work.

+1

I've used HDRShop + CubeMapGen with success, although only for LDR use.

Xoliul

dustinbrown wrote: »

Essentially, if you have an HDR probe file, you use HDR Shop to convert it to the cross format, then you use CubeMapGen to save it as a DDS. I've heard you can use CubeMapGen as a plugin within HDR Shop, but I've never been able to get it to work.

Exactly as I'd do it. Hdr cube's are just the DDS format you save to. I think I pick 16bit float or something, not sure.

Just make sure you mark the "Save MipChain" checkbox in cubemapgen!! Or you won't be able to use them with cubemap blurring in shaders like mine or 3PS.

Eric Chadwick

Some more info here, fwiw (probably not much!)
http://wiki.polycount.com/DiffuselyConvolvedCubeMap#AMD_Cubemapgen