Graphics software made their own chose regarding to the axis orientation of the 3D world they offer.

Here is a synthesis of these choices.

 

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Tips and links about the use of functions in a graphics environment.
Among other things you will find here some useful software ot visualize functions, some explaination about how to control them to get the result you need and many examples very convenient in production.
 

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Physically based rendering theory and resources

 

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Conventions and axis orientation used by various applications for tangent space normal maps.

 

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