The interface for tracking errors that occur when compiling shader source code.
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You create and use custom shader programs with the SCNProgram class.
Tells the delegate that an error occurred when compiling GLSL source code.
Identifies an error type defined by the SceneKit framework.
Constants for the code property of NSError objects produced by the SceneKit framework.
Asks the delegate whether fragments rendered by a program are opaque.
Invoked on the delegate to let it bind program values and/or associated graphics resources (such as textures) for symbols.
Invoked on the delegate to let it unbind program values and/or also unbind associated graphic resources (such as textures).
The delegate of the program object.
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