Dynamic Switch Param in material editor

[Deathrey (DeathreyCG)]

@Just Krishna

Mhm, I’d like to use this thread to ask some question

I heard that using If branching in shaders was quite expensive on GPU because its architecture, but the newer GPUs like GCN they don’t have this problem. Is that true?

Branching still is somewhat expensive, but a threshold, where it becomes justifiable, is indeed much lower on modern GPUs.

Do note however, that IF material expression in UE4 does not produce dynamic branch.