IR on full res

[3dboomerang]

Is there a way to have the Interactive Render engine render a 4K image? (I'm experimenting)

Grts

[maru]

Not sure if there is any limit, but it should work on a 4k+ display.

[3dboomerang]

well yeah... I like how the IR "render" in the sense that when zooming into a region it can quickly solve those places. Production renderer has this to, but once IR is going, the "way" it renders and solves noise is much faster to my senses then the production renderer.

I dont have a 4K monitor, is why i'm asking if it's possible to ask IR to render 4K on a 2K screen?

grts

[TomG]

As a note, a final render does not have the "focus processing on the area you have zoomed in on" like IR does (because this would be bad for a production render). Also, the way IR and production do things is also identical, other than that you can Force Pathtracing on for IR as an option (to remove the pre-processing time for the UHD cache). IR is only faster than production because it is a smaller resolution :) That benefit would be removed for a 4K render of course, if you could force IR to render to that size.

EDIT - oh the other difference is that IR does the "rough view in large blocks first" too, but that only affects the first few seconds of IR at most.

[romullus]

Tom, AFAIK IR uses significantly lower settings for rendering and that is part of the reason why it is faster than regular render. I can't remember which exactly settings are lowered for IR, but that info can be digged up in Corona's config file.

[maru]

tl;dr it does not make sense to use IR for hi-res rendering.
While it is much more responsive, it will actually render slower than the regular rendering in a long run.
There are a few subtle differences between regular and IR. For example, IR always uses lower GIvsAA value than the regular render. AFAIK it's divided by 4.