render resolution

[maudeeb]

Is there any means in octane of generating a final large size print quality rendering - other than setting the preview size ?

If I try and adjust the preview render size to anything higher than 512 height the render view does resize, but the render itself just shows straight vertical streaks past the 512 dimension. The width seems to adjust just fine.

System specs -
XP pro 64 4G ram
GeForce8800GTX 768 MB

Thanks ! Amazing renderer - best I've seen by far for realtime response and ease of use.

[radiance]

Hi,

the demo is locked to 1024x512 resolution.
This is unlocked in the commercial version.

Radiance

[maudeeb]

ahh. Perfect. So as long as I can load the model and have enough memory (583 MB out of 767mb in the test) I'll be able to do large renders - is the render size also linked to available memory ? Just to make sure I'm not going to max out with these models and not be able to do larger renders.

[Amplitude]

afaik there are two limitations to the render ouptut size:

- the quantity of onboard memory
- the hardware maximum a video card can render : 4096x4096

[maudeeb]

Thanks Amplitude ! 4096 is fine, I likely wouldn't be going much above 2K.

Soo... any educated guesses as to how big I could go in this case ?

System XP 64 , 4 GB RAM
GeForce8800GTX 768 MB

Model size - 988K tri's at about 38 MB
Octane render test at 512x1024 using 583MB out of 767MB

Might be asking alot, just wondered if there's a way to estimate memory usage and see how big a render I'll be able to get - or at least if a 2Kx2K render size is not a big deal in this case.

[radiance]

4096x4096 takes up 320MB of video card memory.

Radiance

[maudeeb]

Thanks ! Bit of a GPU rendering newbie here....
Just to make sure I understand, if 4096x4096 takes 320 MB of card memory without any large geometry overheads (or is that less geometry completely, just the render resolution) ,
does that mean each 1x1 in resolution takes .078125 MB ?
so 2000x2000 would be 156.25 MB in card memory ?

If my current test is at 512x1024 and takes 583 MB leaving close to 170 MB left, I'm guessing with the same model I should easily be able to do 2Kx2K size renders ? If I understand the memory requirements properly it seems so.

[radiance]

Thanks ! Bit of a GPU rendering newbie here....
Just to make sure I understand, if 4096x4096 takes 320 MB of card memory without any large geometry overheads (or is that less geometry completely, just the render resolution) ,
does that mean each 1x1 in resolution takes .078125 MB ?
so 2000x2000 would be 156.25 MB in card memory ?

If my current test is at 512x1024 and takes 583 MB leaving close to 170 MB left, I'm guessing with the same model I should easily be able to do 2Kx2K size renders ? If I understand the memory requirements properly it seems so.

yes, that's correct, it's linear.

Radiance

[Shiva3D]

maybe good idea to make Bucked mode for big renders? Like in 3dsmax - strips. 3dsMax render strips one by one and then collect it into one big image.

[radiance]

maybe good idea to make Bucked mode for big renders? Like in 3dsmax - strips. 3dsMax render strips one by one and then collect it into one big image.

this has been discussed many times before and afaik we won't implement this anytime soon as we are working on 2.3 with MLT which makes this very difficult.
We're trying to find a better solution for rendering large format images.

Radiance