Initial project import

node_modules/@react-three/drei/core/useDepthBuffer.js

@@ -0,0 +1,38 @@
+import { DepthTexture, DepthFormat, UnsignedShortType } from 'three';
+import * as React from 'react';
+import { useThree, useFrame } from '@react-three/fiber';
+import { useFBO } from './Fbo.js';
+
+function useDepthBuffer({
+  size = 256,
+  frames = Infinity
+} = {}) {
+  const dpr = useThree(state => state.viewport.dpr);
+  const {
+    width,
+    height
+  } = useThree(state => state.size);
+  const w = size || width * dpr;
+  const h = size || height * dpr;
+  const depthConfig = React.useMemo(() => {
+    const depthTexture = new DepthTexture(w, h);
+    depthTexture.format = DepthFormat;
+    depthTexture.type = UnsignedShortType;
+    return {
+      depthTexture
+    };
+  }, [w, h]);
+  let count = 0;
+  const depthFBO = useFBO(w, h, depthConfig);
+  useFrame(state => {
+    if (frames === Infinity || count < frames) {
+      state.gl.setRenderTarget(depthFBO);
+      state.gl.render(state.scene, state.camera);
+      state.gl.setRenderTarget(null);
+      count++;
+    }
+  });
+  return depthFBO.depthTexture;
+}
+
+export { useDepthBuffer };