ui,presets: switch to r_lightMode

[illwieckz]

The graphics menu now list light mapping and vertex lighting and makes use of the r_lightMode cvar.

The lowest graphics preset now uses vertex lighting.

See:

• Introduce r_lightMode, implement vertex lighting and use it when needed. DaemonEngine/Daemon#992

[illwieckz]

Related engine PR has been merged:

• Introduce r_lightMode, implement vertex lighting and use it when needed. DaemonEngine/Daemon#992

It means that without this patch the Light option in UI is currently doing nothing.

[slipher]

I guess the old one shouldn't be deleted from the presets until 0.55 is released?

[illwieckz]

I guess the old one shouldn't be deleted from the presets until 0.55 is released?

There was no vertex lighting implemented before, and all presets were enabling light mapping.

Setting r_lightMode on 0.54.1 will do nothing.

But the best is probably to wait for the release to merge this (if we do a 0.54.2 for portal and lightmap fixes), or merge to for-0.55.0/sync. In all cases the Lights menu will be broken on 0.54.1 once this is merged.