MSAA

需要在创建通道时新建 renderTarget，修改采样数实现，不支持中途修改采样数，但可以使用**Composer.reset(renderTarget)**直接替换RenderTarget实现

import { OutputPass } from "three/examples/jsm/postprocessing/OutputPass.js";
import { EffectComposer } from "three/examples/jsm/postprocessing/EffectComposer.js";
import { RenderPass } from "three/examples/jsm/postprocessing/RenderPass.js";
import { WebGLRenderTarget } from "three";



```let w = renderer.domElement.offsetWidth
        let h = renderer.domElement.offsetHeight
        const renderTarget = new WebGLRenderTarget(w, h, { samples: this.cof.msaa })
   
        const composer = new EffectComposer(renderer, renderTarget);
      

        const renderPass = new RenderPass(scene, camera);
        composer.addPass(renderPass);


        const outputPass = new OutputPass();
        composer.addPass(outputPass);

fxaa/ssaa/taa

直接导入对应的pass然后添加到composer中即可，以fxaa为例,其他参考官网案例

	setFXAAEnable(enable = false) {
        if (enable) {
            if (!this.fxaaPass) {
                this.fxaaPass = new FXAAPass(this.renderer, this.composer.renderTarget1);
                this.composer.addPass(this.fxaaPass);
            }
        } else {
            if (this.fxaaPass) {
                this.composer.removePass(this.fxaaPass);
                this.fxaaPass = null;
            }
        }
    }

注意事项

composer中的抗锯齿pass会覆盖掉msaa的抗锯齿效果，建有当 MSAA 的sample>2时关闭其他抗锯齿
taa及其消耗性能，不建议将其自身的 sample>2