Metadrive Minimal

Fix rgb camera for mac (#6)

* fix rgb camera for mac

- only 8-bit colors for mac
- use glsl 330 for mac

* macos 4x antialiasing

* no more need to enforce 8-bit colors on mac

* more samples

* what is this, 1990?

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Co-authored-by: Maxime Desroches <desroches.maxime@gmail.com>

MetaDrive-xx

MetaDrive-xx-assets

package assets

MetaDrive-minimal

remove this pipeline