Ratios of size of render to render times

[rcallicotte]

All things being the same (all of the same settings, including render settings), if I have an 800X600 render that takes 1 hour, how long will it take to make a render that is 3200X2400? 

Is there a formula to calculate this?

[JohnnyBoy]

I think it depends on the complexity of your scene, but I did a test and doubling your resolution seemed to double your render times.

So:

3200/800 = 4
2400/600 = 4

4x4=16

16x1hour = 16 hours.

[Oshyan]

Normally the render time should increase linearly with resolution, but currently the TG2 renderer doesn't scale well on all scenes. Sometimes rendering at higher resolution will be *much* slower than lower resolution due to memory issues and other problems with the renderer. These are things that will be addressed in the future, but for now high resolution rendering is more of a luxury that it was in TG 0.9.

It's also important to note that people often think about increasing resolution incorrectly. If you have an 800x600 image a 1600x1200 image is not twice the size, it's 4 times the size (2x in each direction) - i.e. 4 times the number of pixels. JohnnyBoy noted it correctly however.

- Oshyan

[rcallicotte]

Thanks to JohnnyBoy and Oshyan.  This makes sense. 

I'm not worried about the issues yet to be fixed, though it's good to hear they're being acknowledged and plans are in place to address them.  I know you guys in Planetside usually mention something about that, and it's nice, but I'm still learning the program as well as a number of graphics concepts. 

Thanks again.