Hi everyone,
I am investigating Global illumination rendering using environment maps and just viewed the Ambient occlusion tutorial for v 6.1. It mentions an image format that Houdini uses with the extension .rat . Does anyone have any knowledge of this format? The tutorial seemed to go through a conversion process using isixpack to convert an image from cross-shaped to lat-long format.
My main question is: Is is possible to use .hdr or 32-bit .Tiffs as enviroment maps if I convert it to Lat-long dimensions using another utility.. eg: hdrshop.
2nd part of this question is does the enviroment map setting in the VEX GI shop responsible for lighting and photon emission or just ambient occulsion and reflections.
Any help would be greatly appreciated!!
Thanks,
Waibeans
GI environment and .rat images
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