How to disable Combined render passes?

Support Compositing and Post Processing
1

I am trying speed my render rendering the image in passes.
Blender version 3.3.4
I am measuring time in each render passes to see the differences. But right from the start I realized that Blender is rendering all passes even if I disable “combined”.

Here is a sample:
I want spend time rendering only the color passe bellow.

combined2
combined2759×426 8.81 KB

But Blender is rendering also other passes (see bellow):

combined3
combined3755×425 78.6 KB

I disabled the “combined” button but nothing changed.

combined
combined672×805 39.9 KB

Please, can anyone explain how to only spend time rendering in only one selected passes and not in the full scene?

2

Cycles will always render everything. If you just want a color pass plug emission in to the output and render at 8-16 samples for AA

3

Thanks. The color pass is only a example.
Then Blender don’t have this feature (render separated passes) :disappointed_relieved:.
Do you know what the button “Combined” do?

4

To my knowledge it just exposes the combined pass to the compositor, I dont think disabling it gives you any sort of optimization.

5

Ok, thanks. But this button doesn’t change anything in my tests, and the combined pass is always present in the compositor.
Thank you for the explanation. I will try change the samples for speed the render and forget the passes.

6

Yeah, guess that’s an oversight on blenders part, looks like disabling Combined does literally nothing

1 Like
7

So far as I am aware, you always get “combined.”