Right. My point is the response to this is "well if we optimize it more we'll improve performance", but oftentimes if you optimized the existing code you would also improve performance. Your end state is still worse.

Is it really worse if the GPU spends maybe 0.5ms more per frame on these effects? I'd be surprised if a good implementation adds much more to the per frame rendering time.

The consideration for mobile devices (laptops, tablets, and phones make up the bulk of apple's hardware sales) is more power consumption.

But even then it doesn't matter in practice. I dare you to measure the battery life impact of this change.

Thanks. Wasn't familiar with that latin