How to use Global Photon Map to caculate GI ?

[FLBD04]

There is a seldom used function in VRay, Global photo map is a kind of method to caculate GI. When I turned it on instead of irradiance map which is usually used, I got a excessively ugly result.

I want to know how to use Global photo map, and which is the best method in derect computation, Irradiance map and Global photo map?
thank u.

[nully]

http://www.chaoticdimension.com/foru...pic.php?t=3894

make sure you read all the way through

[FLBD04]

Nully: Thank u for ur help, the page u recommend to me is very nice.

[FLBD04]

But it is a pity, nobody paste on the exact meaning of evry parameter in the rolling panel of Global Photo Map. Maybe most tester of VRay are not care about the manual book write down buy VRay's author, evry one just like to try as they like to do, is it right?