cesium
cesium copied to clipboard
CesiumGS
Tileset Highlighting Distortion (M1 hardware on iOS 12)
Highlights on 3D Tiles appear distorted when running CesiumJS on a MacBook with an M1 chip. This issue occurs when the M1 MacBook is running iOS 12 and does not occur when it is running iOS 11.
We ran a WebGL report on Google Chrome using two devices:
- M1 MacBook running iOS 12 (3D Tiles highlights issue is visible)
- Intel MacBook running iOS 11 (no issue with 3D Tiles highlights)
The differences between the two WebGL reports are:
- WEBGL_video_texture is on the M1 Pro and not the Intel
- Max Varying Vectors
- Max Vertex Output Components
- Different values on Aliased Point Size Range
- Different values on Max Samples in Framebuffer
These differences in supported extensions do not seem relevant to the tileset highlighting issue. Thus, it is likely a "deeper" issue with our specification.
Sandcastle example: https://sandcastle.cesium.com/?src=Classification.html Browser: Chrome Operating System: M1 MacBook Pro (OS12)
cc @lilleyse @ebogo1
A very similar issue came up today. The user noticed the issue on MacOS 12 with Apple M1 hardware.
@srothst1 Testing this on an iPad Pro after the latest 15.5 update, I do see some jitter when the camera moves but am not able to reproduce the drastic classification to the left of the building as shown in the about image using https://sandcastle.cesium.com/?src=Classification.html.
We don't see any difference in this issue on the M1 iPad Pro with iPad OS 15.5. Note that on iPad OS there is a workaround because we can disable Request Desktop Website in Safari settings, which we cannot do on Mac OS.
Thank you Gabby, awesome of you to update us on that!
Best, Greg Angevine
On Jan 31, 2023, at 9:01 AM, Gabby Getz @.***> wrote:
Potentially, as reported on the forum https://community.cesium.com/t/entity-jittering-on-mac-m1-m2-fixed/22062, a fix for this issue is available in Chrome Canary.
— Reply to this email directly, view it on GitHub https://github.com/CesiumGS/cesium/issues/9907#issuecomment-1410646286, or unsubscribe https://github.com/notifications/unsubscribe-auth/AOTHY5ZMQFJKLZDGM7KNSALWVEZN3ANCNFSM5HEK4GGA. You are receiving this because you commented.
