setLighting Library Method
Signature: sc.setLighting (ena,perVertex)
Class: taccglShaderConfig Class
ena and perVertex must be boolean values.
If ena=false the shaders do not perform any lighting calculation.
If ena=true then perVertex can be used to select
between lighting calculations per Vertex or per Fragment.
However even if per fragment lighting is selected taccgl™ will
also make an additional perVertex shader and use it if
the performance requires.
Per default lighting per Fragment is enabled. If there are problems
compiling shaders, lighting is disabled.
WebGL™ is a trademark of the Khronos Group Inc.
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