this is djb's xor hashing function.

Connect two nodes with a new parent that does a binary operation on the nodes.

This function returns the tree representation for the vector field(s) being accessed from contant vector. If only one component of vector is accessed

Turn an existing node into an aggregate.

When the symbol table is initialized with the built-ins, there should 'push' calls, so that built-ins are at level 0 and the shader globals are at lev

Thread Local Storage Operations

Thread Local Storage Operations