Render Slave Gamma

[luissee]

Hey guys I have a quick question.  I also get strips on my renders when i use distributed rendering. I put the max file and all the textures on the network, so all computers have access to them.  I've gone through the forum and read all the other people that had the same issue, but nothing seems to help.

The only thing I can think of is that the master computer outputs the gamma at 1.0, but the slaves at 2.2. I attached the screen shots.

I read to make sure they are all the same, but how do I change either the master or the slaves?  I tried changing the 3ds Max Gamma/LUT, but that doesn't seem to help.




I also ran a test without textures and it doesn't seem to get strips, so I'm not sure what it could be anymore.

[lius86]

i have got the same problem, and never figured out how to change that setting!

did you try with this method?
Not working for me..

[lius86]

SOLVED!

edit: no..

[lius86]

ok, some more test today..

THe render looks good for the first passes on the main computer, and the node is rendering fine. But, i don't know why, on my node, after the 30th pass, it starts again from 1-2-3, and when it does that, the stripes appear on the main workstation buffer.

I tried to play with .ini file, changing the gamma settings with different combination, but it doesn't seem helping.


edit1: changing the  sync interval to 10 seconds, makes the stripes appear sooner.
edit2: tried to copy and paste the ini file on both computer using the same but nothing
edit3: tried to remove textures and using an override but nothing.

[arqrenderz]

i have this problem on a 7.1, it resolved for me making a new "base" file from 0 scratch (i was using some base file with all the units and camera setups configurated to my taste)

[lius86]

i have this problem on a 7.1, it resolved for me making a new "base" file from 0 scratch (i was using some base file with all the units and camera setups configurated to my taste)

Thanks I just tried to create a new file, but still same issue.

[luissee]

ok, some more test today..

THe render looks good for the first passes on the main computer, and the node is rendering fine. But, i don't know why, on my node, after the 30th pass, it starts again from 1-2-3, and when it does that, the stripes appear on the main workstation buffer.

I tried to play with .ini file, changing the gamma settings with different combination, but it doesn't seem helping.


edit1: changing the  sync interval to 10 seconds, makes the stripes appear sooner.
edit2: tried to copy and paste the ini file on both computer using the same but nothing
edit3: tried to remove textures and using an override but nothing.

Good thinking to copy the ini file.
I thought it was the ini files on the slaves that had to be changed, but it's the ini on the master computer.  The slaves use that outputgamma value of the master.
I saw a distributed rendering with corona video, and the guy had it at 0.0, but that didn't work for me either
I changed it to 1.000000 and nothing
I saw somewhere else where someone added 1.0+2.2 to make 3.2, but that didn't do anything either.
All those options produced the same result, so I'm thinking the output value doesn't affect it.
I'm thinking maybe it's the input value of the textures that affect it?....

The override with a solid material didn't work?  It works for me.  So, I'm thinking it's how gamma is applied to textures on the slaves?

[lius86]

ok, some more test today..

THe render looks good for the first passes on the main computer, and the node is rendering fine. But, i don't know why, on my node, after the 30th pass, it starts again from 1-2-3, and when it does that, the stripes appear on the main workstation buffer.

I tried to play with .ini file, changing the gamma settings with different combination, but it doesn't seem helping.


edit1: changing the  sync interval to 10 seconds, makes the stripes appear sooner.
edit2: tried to copy and paste the ini file on both computer using the same but nothing
edit3: tried to remove textures and using an override but nothing.

Good thinking to copy the ini file.
I thought it was the ini files on the slaves that had to be changed, but it's the ini on the master computer.  The slaves use that outputgamma value of the master.
I saw a distributed rendering with corona video, and the guy had it at 0.0, but that didn't work for me either
I changed it to 1.000000 and nothing
I saw somewhere else where someone added 1.0+2.2 to make 3.2, but that didn't do anything either.
All those options produced the same result, so I'm thinking the output value doesn't affect it.
I'm thinking maybe it's the input value of the textures that affect it?....

The override with a solid material didn't work?  It works for me.  So, I'm thinking it's how gamma is applied to textures on the slaves?

i tried to use a solid material without texture, but no, it did not work.

I don't think is gamma problem honestly, don't know what to do, i am just rendering with vray for monday using the nodes..

i hope that they are going to fix this DR problem soon

[lius86]

i did another test, instead of using an hdri, with the sun, and seems working..would you mind trying as well?

[luissee]

i did another test, instead of using an hdri, with the sun, and seems working..would you mind trying as well?

I haven't been using an HDRI, just the sun and corona sky.  But I think I got it to work :D

I work on my local computer then archive to gather all my textures, then i put it on the network drive, so all the slaves can read it.
That works with mentalray anyway.
When I looked at the textures paths in the material editor, the paths read as my local one, but when i opened the link, it opened the network folder.
So, I just linked it to the network path, so it had the network name in the path name.
It works :D

Let me know if that doesn't make sense.

[lius86]

i did another test, instead of using an hdri, with the sun, and seems working..would you mind trying as well?

I haven't been using an HDRI, just the sun and corona sky.  But I think I got it to work :D

I work on my local computer then archive to gather all my textures, then i put it on the network drive, so all the slaves can read it.
That works with mentalray anyway.
When I looked at the textures paths in the material editor, the paths read as my local one, but when i opened the link, it opened the network folder.
So, I just linked it to the network path, so it had the network name in the path name.
It works :D

Let me know if that doesn't make sense.

Oh lucky you!!
Unfortunately this is not my case, as the location of the textures it's a server reachable for all the nodes, and second,  that if i render only from the node it renders fine!

Playing with the color space of the hdri seems to work, but the results are really bad!!

[lius86]

Ok, new day, new test.

File New - plane - teapots - corona sun.

No textures at all, except for a bercon map, and yes it works, just adding one texture for the floor, it comes like attachment.

[lius86]

This is what i get opening the file from the node...

The solution must be here!

i can't change those settings..

[maru]

This is what i get opening the file from the node...

The solution must be here!

i can't change those settings..

You can't change gamma and LUT settings on the node?

[lius86]

I tried to change the INI file, using a script, but it's stucked to 2.2

Probably is not a Corona problem, but as i am not the only one having this issue, i think it would be good to keep posting and finding a solution, if you don't mind


Edit:

On 2 workstation we have same settings for the bitmap gamma: input and output to 2.2

Can't change this settings on the nodes, where is 2.2 input 1.0 output.
I tried changing the ini file, using a script, but nothing. Any idea?
The mystery is that with vray it renders fine..!