Why IF material node gets converted to A = B ? C : D

[BoredEngineer]

@Robert Khalikov;458517

Well, any way to create a condition that doesn’t evaluate all branches?

You mean the hardware works that way?

Both hardware and compiler are involved:

how does an SM5 shader handle loops and if statements? (HLSL/CG)

this one is specific to UE4:

Optimizing the shader: when to replace If statements by a Lerp?