Sven

Could you try your border testrender with mantra -r option ( no micropoly rendering ) ? I have seen several problems in mantra with mp rendering that are gone with raytracing only over the last few month. For example http://odforce.net/forum/index.php?showtopic=4246. [odforce.net]

Sven

Theres a MartinLabs plugin that does what you want:

http://martian-labs.com/products.php?product=raysteal [martian-labs.com]

Sven

Just an idea that could maybe work ( but takes more work on your side ):
-Merge all your objects into one
-Save that as bgeo
-Rayhittest in your shader to get the hit position
-use pointcloud functions with your hit position and your previously saved bgeo to get the attributes you want.

Sven