Regression: RGB high detail waveform no longer renders both channels

[fwcd]

Bug Description

Noticed this on the Mr. Brightside intro, which should look like this:

and currently looks like this:

Disabling high details or acceleration both fix the issue.

This seems to be a regression, the last good commit was c0407e5 and the first bad 4d9db3e (diff), suggesting the issue was introduced in

• feat: simplify waveform combobox #13220

cc @acolombier

Version

2.6 (main)

OS

macOS 15.2

[acolombier]

Interesting - sounds like the issue has something to do with all shaders. Am I understanding correctly that the problem is that the buggy waveform has smaller gain?

[fwcd]

It doesn't look like a gain issue, it's simply that the left channel isn't rendered at all (the right channel is silent in this intro).

[ronso0]

So if you swap channels in a DAW and load as new track all is good?