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I've not had much practice with caustics in the scenes I typically work on, but I'd be interested to know if anyone has any tips or has seen any tutorials on where to begin. Most caustics-related things I have come accross relate to a light shining through a solid glass sphere or wineglass, but I just want to see what can be achieved with light bouncing off a glass facade onto the surrounding environment. This can be faked, of course, but I'd like to see what vray can do and how long it would take.
Our projects are normally buildings - a mixture of interior and exterior. With strong sunlight on a glazed facade, you would expect a certain amount of reflective light bouncing back onto the surrounding pavements and other surfaces. I - somewhat naively - assume this would be achieved using caustics.
Switching them on, plus reflecvtive GI caustics:-
1) yields a very spotty, blotchy result
2) takes quite a while to render
The simplest scenes only have the vray sun/skylight system as lighting.
Could anybody share guidance of what the settings should be as a starting point?
Our projects are normally buildings - a mixture of interior and exterior. With strong sunlight on a glazed facade, you would expect a certain amount of reflective light bouncing back onto the surrounding pavements and other surfaces. I - somewhat naively - assume this would be achieved using caustics.
Switching them on, plus reflecvtive GI caustics:-
1) yields a very spotty, blotchy result
2) takes quite a while to render
The simplest scenes only have the vray sun/skylight system as lighting.
Could anybody share guidance of what the settings should be as a starting point?
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