dpadam450 said:
Long ago when speeds were slower, you wanted to lessen every single draw/setup call for a GPU. The biggest optimization in rendering is making sure to use instanced rendering.

I would say this statement itself is already outdated. (not so much for DX 11 maybe)
The bigger optimization i…

Pooya65 said:
The question is what we should do to keep the code clean and efficient?

The efficiency difference to the CPU is nominal. You're talking about cache memory and CPU registers which are basically free on modern CPUs. For a great many actions the actual CPU time is exactly the same if you t…