Lightmap will lose shadow data when bake it again

jack_ma · October 9, 2024, 1:42am

As shown in the project: PlayCanvas | HTML5 Game Engine
Lightmap bake will lose the shadow data when bake again. Is it a bug or some engine updates require me to do something else? All things are fine a while ago, and I notice this change yesterday.

LeXXik · October 9, 2024, 8:48am

Looks like a bug. cc @mvaligursky

mvaligursky · October 9, 2024, 8:54am

yep definitely a bug

LeXXik · October 9, 2024, 8:59am

mvaligursky · October 10, 2024, 10:02am

This is fixed and will be deployed with the next engine release, thanks for the report @jack_ma

jack_ma · November 20, 2024, 12:20pm

Hey, here’s another bug related to lightmap. As WebGL conext context lost ramdomly on Apple device. Even if we lower VRAM around 220MB. And after the lost, all baked scene turns black. It takes us a long time to find why this happens. Lightmap will get lost after WebGL context restore. However, when bake it again, the shadow is gone

Project is here: Scene LightTest2
https://playcanvas.com/editor/scene/1970890

Press ‘G’ to run a graphicsDevice.debugLoseContext.
Lightmap is missing after restore.
Bake it again in ‘devicerestored’ callback as temporary workaround