Dirt on glass

[romullus]

Sorry, i was talking about blending refractive materials.
Anyway, thanks for help - your solution will fit for now. And that trick with multimap is really cool.

[Ludvik Koutny]

Blending refractive materials is impossible with Corona at the moment. But for simple dirty glass, it would be a wrong approach in the first place. It would be just slower way (rendertime-wise) to achieve same thing.

[romullus]

While i certainly agree that blend would likely be slower to render, i can't see why it is wrong approach. It's easier to setup and arguably would give superior results, IMHO.

[Ludvik Koutny]

While i certainly agree that blend would likely be slower to render, i can't see why it is wrong approach. It's easier to setup and arguably would give superior results, IMHO.

It would be easier to set up, but result would be of identical quality, if identical maps were used ;)