visjes
05-23-2005, 11:24 PM
Consider this image:
http://members.shaw.ca/mikeeheler/images/rpass.jpg
The dielectric shader provides some interesting effects-- areas toward the edge darkened, refraction, and reflection on top of that. Now, ideally I want to be able to at least pull the shadows out, but what of the shadows on the inside which are being refracted? Point being that if I simply do not render the dielectric, then there will be no refraction. However, if I want to be able to apply a shadow later in compositing, it can't affect the reflections of the dielectric. And is it possible to pull the reflections off of the dielec?
I tried just using a mib_refract and ReflectionUtility to simulate it, but that's also unacceptable as a) there's no darkening in the right places, and b) the refractions are entirely different than the dielectric. Maybe hacking the delectric shader to make a custom one where reflections can be turned on/off?
Any tips on generating the passes needed to create this image in post-compositing are most welcome.
PS- I would love to use, for example, ctrl_buffers for the passes and l_Glass for the glass instead of dielec, however there are not Linux versions of these yet. :-/
http://members.shaw.ca/mikeeheler/images/rpass.jpg
The dielectric shader provides some interesting effects-- areas toward the edge darkened, refraction, and reflection on top of that. Now, ideally I want to be able to at least pull the shadows out, but what of the shadows on the inside which are being refracted? Point being that if I simply do not render the dielectric, then there will be no refraction. However, if I want to be able to apply a shadow later in compositing, it can't affect the reflections of the dielectric. And is it possible to pull the reflections off of the dielec?
I tried just using a mib_refract and ReflectionUtility to simulate it, but that's also unacceptable as a) there's no darkening in the right places, and b) the refractions are entirely different than the dielectric. Maybe hacking the delectric shader to make a custom one where reflections can be turned on/off?
Any tips on generating the passes needed to create this image in post-compositing are most welcome.
PS- I would love to use, for example, ctrl_buffers for the passes and l_Glass for the glass instead of dielec, however there are not Linux versions of these yet. :-/