[Bug] heatmapLayer and lineLayer not working with shadows turned on

[yaras-phoenix]

Description

After moving to deck.gl v9 I found out that heatmapLayer stopped working. If I use _shadow: true in directionalLight heatmap is not displayed.

Also found that lineLayer is not displayed in both v8 and v9 of deck.gl (while its shadow remains visible).

And one more question - can I make shadows less "tooth-like"?

Flavors

• [ ] Script tag
• [x] React
• [ ] Python/Jupyter notebook
• [ ] MapboxOverlay
• [ ] GoogleMapsOverlay
• [ ] CARTO
• [ ] ArcGIS

Expected Behavior

Visible heatmap in v9.1

Steps to Reproduce

Codepen with deck.gl 8.9: https://codepen.io/yskiugsp-the-looper/pen/KwpyVro Codepen with deck.gl 9.1: https://codepen.io/yskiugsp-the-looper/pen/azOVdKM

Environment

• Framework version: 9.1
• Browser: Google Chrome v137
• OS: Win10 x64

Logs

No response