Highlight layers VS Performance

Questions
1

Hi there,
i know from the docs that using Highlight layer could be expensive. In a scene with few meshes i didn’t found big issue, but when the meshes increase (hundreds) i can experience low performance.
This is an example of my project: a warehouse with selectable items that are highlighted.

image
image1908×869 369 KB

In the picture you can see i use two layer (one for green selection and one for white) because with only one layer there are problem with different colors.
The solution i use is to clear all selections when the user click away or move the camera, but i wonder if there are some other best practice when working with higlight layer.

Thank you

2

adding @sebavan

3

One would be to use the excluded meshes for anything which should not hide it so you limit at the min the number of elements you use inside it.

4

I think grouping the highlighted meshes might actually help here don’t quote me.

5

And what about using glow layer instead of highlight layer? Has it the same performance issue or could it be a better solution? The final result is obviously different, but i think it could be ok for my project.

6

Ok, i confirm that, for my particular application, is much better using glow layer. I get quite the same result without lack in performance.

image
image1908×869 517 KB

7

Yup glow is a bit faster as it does not rely on stencil :slight_smile: