Enabling antialias on the WebGL renderer causes a significant drop in FPS, going from 60 down to about 25.
this.renderer = new THREE.WebGLRenderer({
antialias: true
});
This issue seemed to arise after I introduced multiple scenes and had to manually clear the depth. Interestingly, I still achieved 60 FPS on mobile Safari without any problems, but not on desktop or Chrome.
What could be causing this discrepancy in performance?
One possible factor to consider is the resolution of your desktop scene.
It's also important to verify the device pixel ratio.
The solution provided by mjanisz1 seems to be on point, as it relates to the combination of your resolution and dpr. Many browsers utilize MSAA, which involves upscaling rendering and can be resource-intensive. I recommend exploring FXAA at this link https://github.com/mattdesl/three-shader-fxaa. It offers a good balance between quality and performance that is generally beneficial.
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