WebGLRenderer: added getPhysicalSize()

Fix variable name in `_scene_format` method of Blender exporter

Prevent ' uninitialized variable' console warning

Prevent 'warning X4000: use of potentially uninitialized variable' console message cause by early return statment in glsl shadow code

GPGPU Water Example: Move displacement map chunk

WebGLRenderer: Reverted isArrayCamera handling again. Seems like fewer program changes is better than (many) more uniform calls.

... as in #11271.

Displacement Map: Add morph normal support

SpritePlugin: add support for onBeforeRender()

fix transform in SpriteNodeMaterial and example

SpritePlugin: Define SpriteMaterial shader name

webgl_sprites_nodes - best screen adjustment