Problems Rendering a single frame when using multiple cameras and layermasks

[Anupam_Das]

pg: https://playground.babylonjs.com/#08A2BS#242

Hi all, in the above PG, you can see that I stop the render loop then try to render a single frame. Problem is the background image does not show up. Im wondering if there is some callback I need to wait for that fires when the post process compositing is finished? I looked into some of the callbacks available in the DefaultRenderingPipeline but nothing I do seems to make a difference. As a side note: the technique for rendering the BG as a seperate layer was borrowed from another thread:

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

@Evgeni_Popov @sebavan Update! I have found some breakage with recent updates to babylon with this particular technique and we’re experiencing this after updating to ^5.53.1. (^5.21.0 was working for us) See PG example: this happens when we set the HDR mode in the DefaultRenderingPipeline to true We do need HDR PP , we cant really rely on LDR. Is this a bug or is there a better way to do this?

[Cedric]

I’m not sure how to fix PG. ping @Evgeni_Popov

[Evgeni_Popov]

This PR will fix the problem by checking that the layers are ready in scene.isReady:

Scene: Make sure the layers are ready in scene.isReady