sky and water domes using shaders

assets/glsl/SkyFragment.glsl

@@ -0,0 +1,22 @@
+// https://gamedevelopment.tutsplus.com/tutorials/a-beginners-guide-to-coding-graphics-shaders--cms-23313
+uniform vec3 topColor;
+uniform vec3 horizontColor;
+uniform float offset;
+uniform float exponent;
+varying vec3 vWorldPosition;
+void main() {
+  float h = normalize( vWorldPosition + offset ).y;
+  gl_FragColor = vec4(
+    mix(
+      horizontColor,
+      topColor,
+      max(
+        pow(
+          max( h , 0.0),
+          exponent
+        ),
+        0.0
+      )
+    ), 1.0
+  );
+}