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if (isWebGL2) { formatRGBA = getSupportedFormat(gl, gl.RGBA16F, gl.RGBA, halfFloatTexType); formatRG = getSupportedFormat(gl, gl.RG16F, gl.RG

Ball.prototype.move = function () { this.x = this.speedX; this.y = this.speedY; // 边界判断 if (this.x - this.r = cv.offsetWidth) {