Grass shader bug

[hichemfantar]

https://github.com/pmndrs/examples/tree/main/demos/grass-shader

there's a bug with the grass shader example where the grass isn't rendered on certain camera angles

2024-08-22.16-25-07.mp4

fixed by #82

[abernier]

I cannot reproduce on my setup (macos 15 m1 / Chrome latest)

[hichemfantar]

I cannot reproduce on my setup (macos 15 m1 / Chrome latest)

i can reproduce, both on windows 10 and macos sonoma, and mobile android and ios.
try different angles and camera positions

[abernier]

even on different camera angles/positions

[abernier]

can you create a PR to fix it?

[hichemfantar]

setting frustumCulled={false} fixes it but im not sure it's a real fix

[isaac-mason]

You can reproduce it by positioning the camera not to look at the center of the grass.

The grass geometry needs a bounding sphere manually set as the grass blades are positioned in the shader using the "offset" attribute.

[hichemfantar]

thanks for the fix @isaac-mason

[isaac-mason]

No worries! :)