[gianca]

I'm trying to save an 32bit image from a couple of mxi files with a resolution of 8192x6224.
I tried on both a mac and a windows 7 and in both cases Maxwell just quits as soon as I OK the save as.
Only saving to a 8/16bit seem to work.
Trying to open the mxi's in Photoshop or After Effects also makes the host application quit.
So I have no way currently to save the render images in 32 bit (yes I tried also HDR and TIFF).

Any suggestions? workarounds? Nearest bridges?


Gianca

[Aji Enrico]

I can create but not open tiff 32 (no crash). Although I can create and open exr and hdr in 32 bit mode but it saves gamma wrongly.

Some things I noted.
It seems to me that Maxwell saves hdr images where the scene has setup the gamma at 2.2 to something close to gamma 1.0.
If I save hdr at gamma 1.0 instead of 2.2 it goes below to something around gamma 0.6. So I guess Maxwell does take gamma value into account when it's saving hdr images, but with an offset from 2.2 to 1.0
So to fix that I need to save from Maxwell and open in Irfanview (with plugins) and increase the gamma back from 1.0 to 2.2.

exr file format is a bit different story, it works but I need to increase both gamma and contrast.
In irfanView I need to increase contrast by 40 and gamma from 1.0 to 1.85.

To note, IrfanView shows color correction values like gamma at 1.0, contrast, brightness, saturation, rgb, all at 0 so it's a "relative" color correction

8bits looks exactly as what Maxwell shows in its render view.

[polynurb]

I'm trying to save an 32bit image from a couple of mxi files with a resolution of 8192x6224.
I tried on both a mac and a windows 7 and in both cases Maxwell just quits as soon as I OK the save as.
Only saving to a 8/16bit seem to work.
Trying to open the mxi's in Photoshop or After Effects also makes the host application quit.
So I have no way currently to save the render images in 32 bit (yes I tried also HDR and TIFF).

Any suggestions? workarounds? Nearest bridges?


Gianca

are you saving to a network location?

i had trouble saving large hdr over the net sometimes.

.. maybe try opening the mxi in 64bit photoshop. i know that works with 8k images.

[Aji Enrico]

Nevermind, I see that photoshop opens all 32bit files correctly, guess irfanview file readers arn't the best around

[gianca]

I did try to copy mxi files locally, and save exr locally as well.
The only difference I got is that it Maxwell crashes quicker...


[/quote]

I'm trying to save an 32bit image from a couple of mxi files with a resolution of 8192x6224.
I tried on both a mac and a windows 7 and in both cases Maxwell just quits as soon as I OK the save as.
Only saving to a 8/16bit seem to work.
Trying to open the mxi's in Photoshop or After Effects also makes the host application quit.
So I have no way currently to save the render images in 32 bit (yes I tried also HDR and TIFF).

Any suggestions? workarounds? Nearest bridges?


Gianca

are you saving to a network location?

i had trouble saving large hdr over the net sometimes.

.. maybe try opening the mxi in 64bit photoshop. i know that works with 8k images.

[Aji Enrico]

What versions are you using for MW and OS?
Would you be kind to share a mxi file over a test scene that fails?

[Mihai]

Looks like you're running out of ram. How much do you have installed?

As a work around I guess you could save ldr tifs or pngs from your render at different exposures, then merge those in PS using File>Automate>Merge to HDR.
The MXI is probably crashing PS as well because of not enough ram.

[gianca]

What versions are you using for MW and OS?
Would you be kind to share a mxi file over a test scene that fails?

I'm using the latest versions of Windows 7 and OSX, and Maxwell as well: all is running on the latest MacPro 12 core.
I tried on a similar system and I got the same result.
I think I got plenty of RAM: 24Gb and I'm also monitoring the memory as I'm saving the file and as far as I can tell there is plenty available.
I would be kind enough to share mxi files, however my client wouldn't as the project I'm working on is heavily under NDA.

What I can do is as soon as I got some time I'd like to try to replicate the bug with the following steps:
1 make a million polygon terrain
2 render it in Maxwell at 8192x6224
3 try to save it an exr/hdr/tiff32 from the mxi file
If anyone can also try to replicate these steps on a similar system would be great.

BTW I also cannot render this scene at higher resolution than 8192x6224: memory seems plenty, but the render will fail consistently if I render above the aforementioned resolution. I experienced a similar problem while rendering some images for the current Svedka print campaign as I did run into a wall trying to render at the client chosen resolution.

Cheers,
Gianca

[gianca]

I was able to replicate the bug by repeating the steps I mentioned in my post below.
I don't think it's necessary to upload my scene, but I will be happy to do so under request: the mxi is 1.6Gb big, so I may not be able to send it trough convention email nor I will be able to do it while at work, so it got to be later tonight (PCT).

Cheers,
Gianca

What versions are you using for MW and OS?
Would you be kind to share a mxi file over a test scene that fails?

I'm using the latest versions of Windows 7 and OSX, and Maxwell as well: all is running on the latest MacPro 12 core.
I tried on a similar system and I got the same result.
I think I got plenty of RAM: 24Gb and I'm also monitoring the memory as I'm saving the file and as far as I can tell there is plenty available.
I would be kind enough to share mxi files, however my client wouldn't as the project I'm working on is heavily under NDA.

What I can do is as soon as I got some time I'd like to try to replicate the bug with the following steps:
1 make a million polygon terrain
2 render it in Maxwell at 8192x6224
3 try to save it an exr/hdr/tiff32 from the mxi file
If anyone can also try to replicate these steps on a similar system would be great.

BTW I also cannot render this scene at higher resolution than 8192x6224: memory seems plenty, but the render will fail consistently if I render above the aforementioned resolution. I experienced a similar problem while rendering some images for the current Svedka print campaign as I did run into a wall trying to render at the client chosen resolution.

Cheers,
Gianca

[Bubbaloo]

Are you running Maxwell 32 bit?

[gianca]

Of course no!


Gianca

Are you running Maxwell 32 bit?

[Bubbaloo]

Gotta ask the most obvious questions first.

[gianca]

Well, it's just crickets now here, so I reported this as a bug on Maxwell portal.

Gianca

[Aji Enrico]

Confirming that this is reproducible following the steps above
Exception Code: c0000005 (memory i guess)
Tested on 8GB 64bit win7 & MW

Edit:
Doesn't matter if I use 2 000 000 polygons or 32 000, there's also 4GB free ram space before saving file

[gianca]

Yes, I think so too that the first step of my bug workflow it's not necessary: this seems just the inability of maxwell to save a 32bit file from a mxi above a certain resolution, it does not seem to matter what's in the image.

So the current workflow to replicate the bug would be:

1 render any Maxwell scene at 8192x6144
2 try to save it an exr/hdr/tiff32 from the rendered mxi file

I confirm the steps above will crash Maxwell.
I tried also to do the same at resolution 7168x5376 and Maxwell did not crash, so the issue lie somewhere between 7168x5376 and 8192x6144 resolution.

Gianca

Confirming that this is reproducible following the steps above
Exception Code: c0000005 (memory i guess)
Tested on 8GB 64bit win7 & MW

Edit:
Doesn't matter if I use 2 000 000 polygons or 32 000, there's also 4GB free ram space before saving file