Most efficient way to getPixels() of non rectangular region

Questions & Answers
1

I’m trying to extract tracking image from video texture and speed is important (ios app). What’s the best way to get an array of pixels from the polygon A, B, C, D ?

2

Unless memory is an issue, I’d do GetPixels32() on the rectangular bounds of your polygon and then process the polygon locally as opposed to making repeated GetPixels calls.