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11-10-2020, 05:21 PM   #1
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Join Date: Nov 2007
Posts: 70
Maya software renders are very grainy
Several years ago, I made an intro for my videos, that was kinda based on the 20th century fox intro. This was in Maya 2008, I think. Anyway, I decided to update it a little. I originally just used a bunch of Lamberts to give it a flat, cartoonish look like the 20th century fox searchlights intro, but decided to add some more detail, and use images to create textures - something I've done many times.
But the renders are very grainy (see attached images). I tried turning up samples in render options, but that did nothing (also...isn't that just antialiasing?) Also, the textures look fine as the render is underway. All the grain and noise just appears when the render is done, so it seems like an added effect? If so, I don't remember adding it.
I'm rendering with Maya software. If I remember, Mental ray disappeared as an option...I think when I added a depth of field effect to the camera. But I get the same grain with the default cameras, too.
If I just use the light that represents the sun, everything looks fine, but the shadows are impenetrable, so I want to use a fill light, with shadows turned off, and more of a blue tint, to represent light scattered by the sky and cast some light into the shadows.
But I have to turn the light way down, or it's too much. What I'm currently trying is making the textures darker in photoshop, so I can turn up the lights. It seems to be working, but I never had this issue in Maya before.
I don't like that the grain isn't there, and then appears at the end of the render. Cus that kinda rules out most of the things I suspected as the cause.
Also: I may have posted this twice. I don't know. I don't see it from when I tried before an hour or so ago, so maybe I messed up and posted it incorrectly. If it's just a held-for-review thing, I'd prefer if the other one was deleted cus this one has more details. But I never saw any message, so I think it just timed out cus I never sent it. Or I hit "Preview post" and then forgot I hadn't submitted the message.
Anyway, here are some pics:
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14-10-2020, 06:02 PM   #2
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Join Date: Nov 2007
Posts: 70
Not sure what's going on. I tried going back to Maya 2010, which the file was created on, but now I can't even open it, because I've re-saved it in Maya 2016. I can open the original copy - the one I wanted to update - but I'd spent ages making UV maps and stuff and adding stuff to the scene.
At least, in Maya 2010, the scene is fine. No noise problem.
I tried opening it in Maya 2019 and got a warning about missing Mental Ray nodes, which is kinda odd. And I never got that message in Maya 2016, even though that doesn't have Mental Ray, either. I gues just the message is new.
So I guess what happened was related to Mental ray somehow? I did play with it in the old version. All I did was try some Mental Ray renders with global illumination and final gather. It looked great, but I think the render time was off-putting back then. I guess I changed the photons slider on a light or two, but I dunno if I did or not.
But as far as I know, everything in the scene now is fresh.
The scene wasn't fresh in my memory, so I went through a process of opening the old scene, deleting everything except, for example, the ground plane, copying that, then pasting it into a new scene. I did that with everything in the scene. Mostly so I could go through everything on the outliner, one thing at a time, examining everything. I was UV mapping as I went. I just made new lights, rather than import.
Right now, I'm not sure what to do. Is there a way to save a scene in 2016 so it can be read by 2010? As far as I know, I've not used any new features
I could also be totally wrong about the cause of the noise, but the only way I can think of to check, is to open the recent copy of the file in the older version of Maya
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