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Examples/sdl2 improvement #14

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hakobera merged 3 commits into master from examples/sdl2-improvement

May 10, 2020

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hakobera commented May 10, 2020

SDL の Main Loop に Sleep を仕込むことで、CPU利用率を低減する
YUV -> RGBA の変換を SDL 内部で実行してもらう。SDL 内部では SSE や GPU の支援をうけられるような実装になっているので、ソフトウェア処理より早い
SDL Window に描画時のスケーリング処理を SDL 側に移譲した。こちらも最適化がされているので、go で実装するより速い

結果として、CPU利用率が 110% -> 15% (ThinkPad E495 Ryzen 5 で計測時) にまで低減された。

hakobera added 3 commits

May 11, 2020 00:36


          Add sleep for SDL main loop

a34321b


          Use SDL feature for YUV->RGB converting and scaling

b2e9766


          Tweak SDL rendering flags

55c9556

hakobera merged commit d7c4598 into master

hakobera deleted the examples/sdl2-improvement branch

May 10, 2020 16:09

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