Performance issue with simple POP setup

POPs
1

Hello, I have a point POP, goes into a Feedback and gets moved. But somehow my MacBook only has 30fps using this setup. Then I disable all preview in the nodes, it goes to 60fps. Then I enable preview on the Math combine and it goes back to 20 - 30fps

street 2.toe (4.7 KB)

2

Hi @fxduke_108,

thanks for pointing this out, we’ll have a look why an expression in the Scope B parameter of a Math Combine POP causes the massive cook times.

As a workaround and recommended way of working, use the Uniforms Tab of the Math Combine POP and create a new vector where you reference the CHOP channel via the Value parameter.

Now on the Combine page, you can use the newly created uniform in the Scope B parameter.

create a new uniformreferencing the CHOP channel
create a new uniformreferencing the CHOP channel531×396 21.6 KB

use that uniform in the scope parameter
use that uniform in the scope parameter532×287 14.6 KB

Hope this helps
cheers
Markus

3

Using a constantly changing value in the Scope B parameter causes the shader to recompile every frame, since those constants are currently embedded directly in the Math Combine POP and Math Mix POP shader code. We’ll look into improving this behavior.

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