How to prevent postprocess effects from affecting background color

[Blake]

Heya, here’s a great example that shows how to do it using a background layer!

Adding a background image that is not affected by the Default Rendering Pipeline post processes

You can do it as you did with two cameras but by blending the last post process of the pipeline with the current framebuffer (which contains the layer image at that point) instead of simply replacing the framebuffer with the result of the pipeline (which is the default behaviour). Here’s a PG that is doing that: You need to set a scene clear color with alpha=0 for it to work as expected.

I just copied that technique into your playground and set the layer to use a raw 1 pixel white texture so that you can set the layer’s color property to whatever background color you want (color and texture are multiplied together in the shader).

Babylon.js Playground