3D_library 2.0.0

changed

• changed the game loop.
• added scene system. You can now create many scenes and switch between them. A scene has a load and update function. A scene will remove all its content when a different scene is loaded.
• improved ray marching api.
• changed how lights are added.

features

• added sdf shader to library for using ray marching distance functions.
• added shadows to ray marching.
• added ambient occlusion to ray marcher

bugfixes

• fixed memory leaks.
• ray marching now works with different window resolutions
• fixed issue when having no imports in shader