Just sent a .rar file to vlado containing the scene and two renders (one with RT and one with production)
Unfortunately I can’t share the renders or scene with the public due to NDA reasons.
In the end it’s about some (heavy) brightness differences and I have no clue what’s causing it.
It would be much appreciated if vlado can take a look at the scene.
We got some “special” setup in this scene:
1) VRayPlane as groundplane with matte object enabled
2) Environment overrides for reflection/refraction (black) and a white background
I have no idea what’s causing the differences and its quite frustrating because lighting with RT is a blast and so fast but if you can’t rely on it even in such simple setups its kinda bad.
Maybe I am doing something wrong but I cant think of anything at the moment that would cause this behaviour and since I know RT got its problems i figured it’d be best posting it here.
The core issue is that some reflections render brighter in production than in RT.
While we’re on it:
- Camera exposure still has no effect whatsoever in RT so we decided to render completely in RT with exposure off in the end.
- MultiMatte doesn’t render masks when in material id mode. Object ids work fine.
System specs and software versions see my signature
Well I am aware that RT doesn’t support subpixelmapping thats why I also tried turning it off and still RT and production don’t render the same brightness.
Reason I keep SPM on is jaggy edges even when rendering clamped. I rather have clean edges than a “correct” result
Did you try to render with SPM disabled? RT and Production SHOULD render the same, but it didn´t in my tests…
And by the way I jsut figured out why exposure had seemingly no effect at all: You need to restart RT in order for the camera changes to take effect…that is annoying. Any chance of a fix?
In my test with SPM disabled RT and Prod output the same result. About RT evaluating camera changes - can you tell me which settings are you tweaking ?
As far as I am aware, VrayPlane is NOT supported in Vray RT.
This may be what’s causing the brightness differences ?? It certainly would have a noticeable effect on brightness by loosing a ground plane. I am guessing that RT is brighter??
