Sway: Allow setting custom modes

[jakubn551]

Hi, i would like to know if sway have some support for external gpu (expresscard) and gpu hotswap.
and second question: how to use non native resolution if it is possible. Thanks.

[emersion]

external gpu

Yes, this is supported.

gpu hotswap

Not supported, but it won't work with ExpressCard anyway.

non native resolution

Not yet supported, but shouldn't be hard to add.

[ascent12]

This is more of a wlroots issue than a sway issue.

gpu hotswap

This is planned, but not at the top of my priority list.

non native resolution

Not yet supported, but shouldn't be hard to add.

I actually had some code sitting on a branch somewhere implementing the width*height@rate -> mode part, but I couldn't be bothered hooking the rest of it up at the time. I should dig that up at some point.

[emersion]

I actually had some code sitting on a branch somewhere implementing the width*height@rate -> mode part, but I couldn't be bothered hooking the rest of it up at the time. I should dig that up at some point.

Note that we already have a wlroots function adding a custom mode to a DRM output.

[ascent12]

Note that we already have a wlroots function adding a custom mode to a DRM output.

Yeah, I meant hooking it up to wlr_output_set_custom_mode. Calculating the drmModeModeInfo yourself is somewhat non-trivial, and I don't want the user to have to resort to anything archaic like xfree86 modelines or something.