The people who complain the most about mental ray tend to be the ones who never took the time to learn to use it properly.
If you read the manuals, mental images states some modes are more taxing than others for rendering. For example, Segmented shadow mode incurs 15% additional rendering time vs. the default shadow computation mode, and is less stable inside of material shaders. Segmented shadows is currently set as the default shadow computation mode. If you do most of your rendering in passes, then you likely do not need segmented shadows and can revert to what is now labeled "normal" shadow mode to regain some performance and stability. If your render pass doesn't need lighting, then turn shadows off completely. That's just one example. For XSI v1.0 thru XSI v5.11, the default settings Softimage chose for mental ray were fairly efficient, but users commonly complained about black spots when doing renderings involving lots of reflection or refraction (because they didn't increase ray depth) or anti-aliasing wasn't super smooth (because they didn't set filter to 'lanczos' or 'mitchell' instead of default 'box', or didn't adjust the adaptive sampling properly). In essence, most complaints were due to user error - because users didn't take the time to learn how to use the renderer To alleviate support issues, Softimage redefined the default mental ray settings in XSI v6.0 to what they are now - which effectively activates a bunch of stuff you don't need majority of the time and does a lot of extra work that never shows up in the final rendered image. This change can often be blamed for inducing crashes and slower render times because many users do not tweak the settings. If you learn to use the renderer properly instead of using a 3DSMax mentality of pushing a button and walking away, you'll get better performance and stability. Much of that also involves strategy for setting up the scene before sending it to the renderer - another area users make gross mistakes because they don't take the time to understand the rendering process. Matt Date: Sat, 28 May 2016 09:25:06 +0200 From: Mirko Jankovic <mirkoj.anima...@gmail.com> Subject: Re: Anybody still using mental ray? To: "softimage@listproc.autodesk.com" *1. I don't want to throw away a expensive CPU based renderfarm.* It will be obsolete soon anyway so just make good planing for next render tool, CPU or GPU road. *2. mental ray still has more shaders. It's slow sometimes but it is rathergood when you want to do non physically based things. A bit like Softimageitself, the all-purpose, swiss knife.* First time I heard something like this for MRay. Mostly it is in line I wanna puke or quit 3d completely due to rendering part :) When I discovered Arnold and then even more Redshift that is when a big issue I had with SI, ie rendering was solved and 3d was fun again. MRay was PAIN non stop! Swiss knife.. yea could say that, got ton of things but nothing good for most of things :) Redshift saved my 3d ;) ------ Softimage Mailing List. To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com with "unsubscribe" in the subject, and reply to confirm.
