Official line, Android version still open
Google Pixel 9
The Pixel 9 uses Google Tensor G4. That chip's GPU is Arm Mali. The 0.4.0 README lists Mali as unsupported.
Unsupported
Official GPU line
Mali is covered by the 0.4.0 README unsupported list: Mali, Xclipse, PowerVR, and Adreno 710.
Not enough information
Official Android line
Android version is not selected, so the operating-system line is still open.
Unsupported
Combined official reading
Official status: unsupported. The 0.4.0 README places this GPU class outside the published range.
No site retest
Test evidence
Test evidence on this site: none. No community report is stored here. If an upstream sentence names the device, it is shown on its own line and does not count as a retest.