Put rainbows behind experimental

assets/voxygen/shaders/include/cloud/regular.glsl

@@ -247,11 +247,13 @@ vec3 get_cloud_color(vec3 surf_color, vec3 dir, vec3 origin, const float time_of
         int i;
 
         #if (CLOUD_MODE >= CLOUD_MODE_MEDIUM)
+        #ifdef EXPERIMENTAL_RAINBOWS
             // TODO: Make it a double rainbow
             float rainbow_t = (0.7 - dot(sun_dir.xyz, dir)) * 8 / 0.05;
             int rainbow_c = int(floor(rainbow_t));
             rainbow_t = fract(rainbow_t);
         #endif
+        #endif
 
         for (i = 0; cdist > min_dist && i < 250; i ++) {
             ldist = cdist;
@@ -287,6 +289,7 @@ vec3 get_cloud_color(vec3 surf_color, vec3 dir, vec3 origin, const float time_of
 
             // Rainbow
             #if (CLOUD_MODE >= CLOUD_MODE_MEDIUM)
+            #ifdef EXPERIMENTAL_RAINBOWS
                 if (rainbow_c >= 0 && rainbow_c < 8) {
                     float rain = rain_density_at(pos.xy);
                     vec3 colors[9] = {
@@ -307,6 +310,7 @@ vec3 get_cloud_color(vec3 surf_color, vec3 dir, vec3 origin, const float time_of
                     );
                 }
             #endif
+            #endif
         }
     #ifdef IS_POSTPROCESS
         }

voxygen/src/render/mod.rs

@@ -467,6 +467,8 @@ pub enum ExperimentalShader {
     /// Display grid lines to visualize the distribution of shadow map texels
     /// for the directional light from the sun.
     DirectionalShadowMapTexelGrid,
-    // Enable rain, unfinished and goes through blocks
+    /// Enable rain, unfinished and goes through blocks
     Rain,
+    /// Enable rainbows
+    Rainbows,
 }