VRFB turns to black

[zeronove]

I've just updated to 3.6.05 from 3.2 (I know ...it's a bit late) ...but I'm having issue with the vrfb
When I load a previous rendered image from vrfb history and make a region to go on fine tuning details then it clears the buffer (it turns to black);
it's seems a nonsense ...is it expected to work this way?

[zeronove]

no ideas, suggestions or whatever?

I've tested with a new simple scene and it works without refreshing vrfb otherwise with my last three production scenes it always do a full refresh when using region over a preloaded image from history.

I've also tried to merge the scene in a new file then I have copied render settings one by one ...well, it works untill I add all previous used render elements (as new ones, not merge) ...after doing that the vrfb start refreshing.
So, the last difference among scene is now that history image has lens effects on (then I've effects results, bloom and glare elements as well) while the new scene don't and it makes no difference if I switch on/off lens effect before region.

As side note it seems that "clear image" button dosn't fully work: it clears the vrfb but element names are still visible in the dropdown list

...so I suppose there is something broken inside my scene but I've no more ideas where I've to look.

Thank in advance

[yavor.rubenov]

Hello,

Sorry for the delayed reply.

Do you have render elements with names longer than 64 symbols? There's a bug that we haven't fixed when render elements names are longer than 64 symbols the frame buffer is always cleared.

Best regard,
Yavor

[zeronove]

I've just re add all the elements and I think these are all the default names ...see attach

[yavor.rubenov]

I'm trying it with the same elements and things seem correct here. Can you send the scene (you could delete most of the geometry).

[zeronove]

here it is, the file is a stripped one from a problematic scene

I insert just a dome, teapot camera and plane but the behaviour is the same

repro steps:

- render
- save image to history
- clear buffer
- reload image from history
- press region and select an area
- render

vrfb closes and open as empty rendering only the selected region on black

[yavor.rubenov]

Thanks for the scene. With it it happens here too.
We have this bug already logged in our system and it is already fixed for V-Ray Next. Not sure when a fix can be merged back to 3.6

[zeronove]

do 3.6 nightlies have already this fix?
is it already present in 3.6.04 (instead of 3.6.05) or not?

[yavor.rubenov]

Unfortunately no the fix is not in any branch of 3.6

[zeronove]

Well, let me sat this it's not a so minor issue for me.

History WAS extremly useful to continue fine tuning details day after day: you were able to render full res once in your spare time then reload the vrimg everytime you think of something to fix or improve some part of the image; actually a lot of time it's wasted just to rerender the image in order to restore the starting point ...this way history is almost useless.

So if you can bring up priority fot this fix ...please do it.

Thanks

PS
Release notes for the nightlies are not updated anymore ...so we don't know what's fixed and what is not

[zeronove]

hi guys,
I'm sorry to bother you but, as release notes are broken, I've no other ways to be updated
any news about those two issues?
thanks

[yavor.rubenov]

Unfortunately there are no changes to those.

[zeronove]

forgive this bump

hi yavor, any news about this?

[yavor.rubenov]

Hi,
Sorry for the delayed reply.
I hope that in a day or two there will be some fixes in the 3.6 stable nightlies related to the buffer clearing.
Will post again when ready.

Best regards,
Yavor

[zeronove]

good news!
thanks a lot