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Jonas Ådahl ca98895185 tests/cogl: Add test checking rgb10 fbo precision
There are two tests; one checks that clearing with a color that cannot
be represented using 8 bits per channel doesn't loose precision when
painted, then read back using glReadPixels(). Would the texture backing
store have 8 bits per channel instead of 10, we'd get a different value
back.

The other test checks that painting from one fbo to another also doesn't
loose that precision.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2461>
2022-12-17 23:12:34 +00:00
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2022-12-17 15:13:48 +01:00