MeshReflectorMaterial increases the number of geometries and textures dramatically

[XavierYribarren]

• three version: 0.159.0
• @react-three/fiber version: 8.15.13
• @react-three/drei version: 9.93.0
• node version: 18.17.1
• npm (or yarn) version: 9.6.7 (npm)

Problem description:

I've added a plane with a MeshReflectorMaterial to my scene, and when I scroll down, the number of textures and geometries increases dramatically. I know the problem comes from the material because it only happened when I added it, and 'solved' it when I removed to reflector mat.

Relevant code:

 <mesh position={[0,0,15]}>
  <planeGeometry args={[20,20,20,20]}/>
  <MeshReflectorMaterial
            blur={[400, 100]}
            resolution={1024}
            mixBlur={1}
            mixStrength={15}
            depthScale={1}
            minDepthThreshold={0.85}
            color="#151515"
            metalness={0.6}
            roughness={1}
            debug={4}
          />
 </mesh>

See the r3f-perf report below :

Suggested solution:

[zhavoronskaya]

try moving your relevant code into separate memoized component:

const ReflectorMemoized = React.memo(function ReflectorMemoized() {
  return (
    <mesh position={[0, 0, 15]}>
      <planeGeometry args={[20, 20, 20, 20]} />
      <MeshReflectorMaterial
        //...
      />
    </mesh>
  );
}, () => true);

did the trick for me

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