What about a using a lens shader that does nothing and tweak the alpha in a map node. mib_lens_boked -> Color Basis -> Lens Shader Port on camera or pass. Make sure your boked shader is disabled... it should still return the sample color and allow you to tweak the resulting color before the output shader is run.
GL From: [email protected] [mailto:[email protected]] On Behalf Of Matt Lind Sent: Monday, May 13, 2013 2:59 PM To: [email protected] Subject: RE: render region opacity? After further review, it appears Softimage broke something along the way....probably dating back to XSI v6. The output shaders to pull this off have since been removed. The workaround would be to use a 'texture' shader which is mental ray's miscellaneous category and can be used in any context, but those shaders don't appear to work anymore either. Unless you can intercept the output via the FXTree, I think you're SOL. Matt From: [email protected] [mailto:[email protected]] On Behalf Of Matt Lind Sent: Monday, May 13, 2013 11:13 AM To: [email protected] Subject: RE: render region opacity? You'll need to apply an output shader and modify the alpha channel transparency to your liking. An output shader is a shader which executes after rendering has completed and is given the opportunity to perform an operation on the rendered image before it is dumped to file (or to screen in this case). However, doing so may make mental ray freak out a bit and make it try to compensate by renormalizing the image effectively undoing the effect. Therefore you might have to visit your region render options and set image clipping to none. This will tell mental ray not to try to rebalance the image data. Matt From: [email protected]<mailto:[email protected]> [mailto:[email protected]] On Behalf Of Ponthieux, Joseph G. (LARC-E1A)[LITES] Sent: Monday, May 13, 2013 7:35 AM To: [email protected]<mailto:[email protected]> Subject: render region opacity? Is there any way to make the render region non-opaque? I'd like the render region to partially reveal the wireframes and scene underneath and it would be really useful if I could control the visibility(transparency?) of the region. Is that possible? -- Joey Ponthieux LaRC Information Technology Enhanced Services (LITES) Mymic Technical Services NASA Langley Research Center __________________________________________________ Opinions stated here-in are strictly those of the author and do not represent the opinions of NASA or any other party.
<<attachment: winmail.dat>>
