Something I’ve often wondered is why the Cycles light path defaults do not align nicely with the existing presets?
|Defaults||Limited GI preset||Full GI preset|
It certainly seems like the defaults are meant to be generally useful for everyone, at a final “production” quality even, based on how “high” they are compared to “Limited GI”. And to a lesser extent because most users are completely unaware of presets in general so the defaults have to work well for most things.
However, the oddball out is that that volume_bounces setting.
Would the following proposal be acceptable as a patch?
- Change the current coded defaults to set volume_bounces = 2 for new scenes (no versioning; old scenes will remain unchanged)
- Change “Limited GI” to use 0 for volume_bounces
- Create a new “Default GI” preset so that users can return all settings to defaults if they tweak things and want to go back (downside is that the settings will need to be kept in sync)
This creates the following progression of presets: Direct Light -> Limited GI -> Default GI -> Full GI