Doom fire for iOS :)

Performance measurements

Unrolled:

Update fire: mean = 0.694818 ms, std = 0.270528 ms
Update fire: mean = 0.786578 ms, std = 0.152142 ms
Update fire: mean = 0.745442 ms, std = 0.197627 ms
Update fire: mean = 0.789707 ms, std = 0.161179 ms
Update fire: mean = 0.766145 ms, std = 0.181275 ms

Simple:

Update fire: mean = 1.878017 ms, std = 0.669862 ms
Update fire: mean = 2.110721 ms, std = 0.441594 ms
Update fire: mean = 1.591955 ms, std = 0.732632 ms
Update fire: mean = 2.159456 ms, std = 0.388810 ms
Update fire: mean = 2.161490 ms, std = 0.392137 ms

NoRem:

Update fire: mean = 1.045769 ms, std = 0.379475 ms
Update fire: mean = 1.208804 ms, std = 0.248303 ms
Update fire: mean = 1.066904 ms, std = 0.353610 ms
Update fire: mean = 1.197387 ms, std = 0.243372 ms
Update fire: mean = 1.210328 ms, std = 0.229004 ms

NoRemUnrolled:

Update fire: mean = 0.615044 ms, std = 0.209442 ms
Update fire: mean = 0.677736 ms, std = 0.141159 ms
Update fire: mean = 0.596526 ms, std = 0.222295 ms
Update fire: mean = 0.681581 ms, std = 0.133746 ms
Update fire: mean = 0.672194 ms, std = 0.141774 ms

NoRemUnrolled2:

Update fire: mean = 0.421170 ms, std = 0.138709 ms
Update fire: mean = 0.469763 ms, std = 0.071596 ms
Update fire: mean = 0.398928 ms, std = 0.148346 ms
Update fire: mean = 0.427905 ms, std = 0.122568 ms
Update fire: mean = 0.446736 ms, std = 0.102405 ms

NoRemUnrolled3:

Update fire: mean = 0.310687 ms, std = 0.154055 ms
Update fire: mean = 0.262283 ms, std = 0.156746 ms
Update fire: mean = 0.198823 ms, std = 0.141941 ms
Update fire: mean = 0.169880 ms, std = 0.145218 ms
Update fire: mean = 0.422134 ms, std = 0.142730 ms

NoRemUnrolled4:

Update fire: mean = 0.166009 ms, std = 0.038809 ms
Update fire: mean = 0.180233 ms, std = 0.020360 ms
Update fire: mean = 0.391262 ms, std = 0.155086 ms
Update fire: mean = 0.431182 ms, std = 0.134030 ms
Update fire: mean = 0.472770 ms, std = 0.096501 ms

NonNegPixels32:

Update fire: mean = 1.152069 ms, std = 0.456122 ms
Update fire: mean = 1.337384 ms, std = 0.342312 ms
Update fire: mean = 1.338887 ms, std = 0.329724 ms
Update fire: mean = 1.415573 ms, std = 0.213918 ms
Update fire: mean = 1.387101 ms, std = 0.258803 ms