Initial work on porting minimap to new RTT
Merge branch 'master' into NewRTTMinimap
Merge branch 'master' into NewRTTMinimap
New minimap rtt branch : now something is  visible
Make progress on new minimap RTT : it was actually 2 issues. First the new code calls camera->setAspectRatio which resets the matrix; second, we rendered the minimap from the back, and backface culling is now active
Set blendfunc when calling draw2DImageFromRTT.
Override clear color inside makeMiniMap

Track clear color was used, resulting in wrong alpha channel value.
Do not hardcode minimap size
new minimap RTT fixes, getting there!
Set ambient light when rendering minimap
Add 50% transparency to minimap.
Merge branch 'master' into NewRTTMinimap
Workaround crash. Vlj, please look at this, this is probably not an idea fix!
Add a weight for vignette.
Change "faceness" of lap line.
Interpolate the normal for the gravity to allow smoother changes of
gravity - though it does not improve the bumpiness on twisted road section.
Some cleanups
Use fixed attribute location for instanced objects.
Some cleanup
Clean vao_shadow_pass on instanced.