When entering gp_name, display buttons vertically to allows gamepad selection
Fix memory leak.
Added support for wip-tracks and wip-karts directories, which are only
used when artist debug mode is enabled.
Missing patch in previous commit.
Give the first player tux as icon (instead of sara). Fixes #1771 for now.
Fixed incorrect icon name.
Merge pull request #1779 from math07/working

When entering gp_name, display buttons vertically to allows gamepad
Factorise sun color/position
Use deferred shading instead of light prepass
Implement DFG LUT for phong specular
Use GGX D + Schlick G for BSDF and burley for Diffuse
tweak tonemap
Clamp specularIBL
Lit transparent

Just a test atm
Add sunlight to transparent