[OpenJDK Rasterizer] RFR: Marlin renderer #2

[Laurent Bourgès]

Jim,

>> Fixed but I kept the local variable as it has a measurable impact (760ms
>> vs 800ms) with a medium complex map (135 000 shapes).
>
>
> Please confirm that I am reading this correctly.
>
> You reverted the 2 variable loads at lines 1258,1259 in Renderer.java and
made no other changes and saw a 5% performance drop on the total runtime of
a benchmark that renders 135,000 shapes?

I only run the benchmark once on each variant and results have some
variability even MapBench has several warmup phases...

However, each map is rendered by 4 threads for 25 iterations on this test =
3 minutes at 100% cpu on my laptop.

I have the impression it is a bit slower; I will take time to perform 3
runs per variant and compare the best of 3 to have a better estimate.

Laurent
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