Merge branch 'dev' into v7

src/utils/BackCompat.js

@@ -0,0 +1,23 @@
+import { REVISION } from "three";
+
+const revision = Number(REVISION.replace(/\D+/g, ""));
+
+/**
+ * Updates the given fragment shader for the current version of three.
+ *
+ * @param {String} fragmentShader - A fragment shader.
+ * @return {String} The modified fragment shader.
+ * @ignore
+ */
+
+export function updateFragmentShader(fragmentShader) {
+
+	if(revision < 154) {
+
+		return fragmentShader.replace("colorspace_fragment", "encodings_fragment");
+
+	}
+
+	return fragmentShader;
+
+}