Video rotation oddities under Metal.

Is there an existing issue for this?

• This is a bug in RetroArch frontend
• I have searched the existing issues

Description

After 2d37811, aspect ratio is properly applied for a given rotation but the orientation never changes. This applies to all shaders.

I can’t upload images to GitHub for some reason. Please look here: https://imgur.com/a/nXOrkEB

ba28fae fixed the rotation issue on Golden Gate but we need to verify it works in Tahoe and Sonoma.

ba28fae introduced a new bug where a few shaders show a heavy magenta cast. This only applies in tate mode.

Expected behavior

No response

Steps to reproduce the bug

1. load any game that defaults to TATE mode. 90/270 rotation
2. or force any game into rotation under settings->video

Version/Commit

4503b1d

Bisect Results

2d37811

Present in the nightly version

Yes, this is reproduced in the nightly build

Platform & operating system

macOS 27, Metal driver

Affected Cores

No response

Environment information

macOS 27
Metal Driver

Relevant log output

Start by comparing commits 2d37811 and ba28fae, then reproduce 90/270-degree TATE rotation on macOS with the Metal driver using the listed game or forced video rotation settings. Check orientation and shader output across Tahoe and Sonoma; done means rotation changes correctly without the reported magenta cast in affected shaders.