Aras Pranckevicius
9cbc96194e
Gamma Cross code seems to be coming from year 2005 or earlier, with complex table based machinery to approximate "raise to power" calculations. Which, for Gamma Cross, have always been hardcoded to 2.0 "since forever". So simplify all that, i.e. replace all the table lookup/interpolation things with just `x*x` and `sqrt(x)`. Applying Gamma Cross on 4K UHD resolution, Windows Ryzen 5950X machine: 36.2ms -> 8.1ms Pull Request: https://projects.blender.org/blender/blender/pulls/115801
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