* remove redundant code

* line color

* don't import strings

* begin merge

* fix terrain

* fix

* render pipeline with sidewalk

* green

* simple pbr to third party

* include simple pbr

* develop shader

* simplify pssm

* add debug code

* use pssm shadow

* 3 splits by default

* use version 330

* delet argu

* shadow filtering

* :small shadow buffer

* 2 split

* light

* fix camera

* merge pbr render and render

* line thickness

* shader auto

* color

* format

* fixbug

* add anotation

* t navi

* fix bug