COG -> GeoTIFF() + normalize:false -> TileLayer is broken on many newer Android phones about openlayers HOT 3 OPEN

See #13367 #13529 #14366 #14377 #15136

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Ah cool, didn't know a webgl2 port has been in the works for awhile. If more work is needed on a PR I'd be happy to jump in.

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As I've slowly wrapped my ahead around the issue and the context for everything I've rewritten the issue to be more straightforward hopefully. I also brought in some additional statistics in case it helps the openlayers maintainers make decisions about future WebGL2 implementation.

In the past few years OES_texture_float support has dropped from ~95% support on Android devices (at least from an archive.org version of webglstats.com in 2021) to ~88%, per the latest web3d survey data: https://web3dsurvey.com/webgl/extensions/OES_texture_float

According to gpuinfo.org, the following devices running Android 13 or 14 have limited (broken in some browsers) or no (broken in all browsers) OES_texture_float support:

• Pixel 6, Pixel 6a
• Pixel 7, Pixel 7 Pro
• Pixel 8, Pixel 8 Pro
• Samsung Galaxy Tab A7, Active3, A8, S6 Lite,
• Samsung Galaxy A03, A12, A13, A14, A22, A24, A32, A34, A51, A53, A54, A71 (unlocked/dual sim models)
• Samsung Galaxy S20, S20 Ultra, S21 (unlocked/dual sim models)
• Samsung Galaxy Note 9 (dual sim)
• Oppo Reno8 Pro
• Xiaomi 11T
• Xiaomi Redmi 12, Note 12 Pro, 12C
• Xiaomi 14T
• Xiaomi Poco M5, X6 Pro

Given the above list, this has not been as problematic in North America and Europe until the newer Pixel versions started gaining market share. For us, we have enough users on Pixel 7 & 8 where it is now a high priority production problem, albeit due to our usage of a niche openlayers feature.

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