@flyskywhy/react-native-gcanvas/core/test/benchmarks/shaow/tc_2d_shadowOffsetY.js

A C++ native canvas 2D/WebGL component based on gpu opengl glsl shader GCanvas

// Shadow
ctx.shadowColor = 'red';
ctx.shadowOffsetY = 25*ratio;
ctx.shadowBlur = 10*ratio;

// Rectangle
ctx.fillStyle = 'blue';
ctx.fillRect(20*ratio, 20*ratio, 150*ratio, 80*ratio);