Expose ambient intensity value for globes as a property

modules/globebrowsing/shaders/renderer_fs.glsl

@@ -55,6 +55,7 @@ uniform vec3 lightDirectionCameraSpace;
 
 #if PERFORM_SHADING
 uniform float orenNayarRoughness;
+uniform float ambientIntensity;
 #endif // PERFORM_SHADING
 
 #if SHADOW_MAPPING_ENABLED
@@ -205,7 +206,8 @@ Fragment getFragment() {
     normal,
     lightDirectionCameraSpace,
     normalize(positionCameraSpace),
-    orenNayarRoughness
+    orenNayarRoughness,
+    ambientIntensity
   );
 #endif // PERFORM_SHADING
 

modules/globebrowsing/shaders/texturetilemapping.glsl

@@ -374,9 +374,9 @@ vec4 calculateNight(vec4 currentColor, vec2 uv, vec3 levelWeights,
 
 vec4 calculateShadedColor(vec4 currentColor, vec3 ellipsoidNormalCameraSpace,
                           vec3 lightDirectionCameraSpace, vec3 viewDirectionCameraSpace,
-                          float roughness)
+                          float roughness, float ambientIntensity)
 {
-  vec3 shadedColor = currentColor.rgb * 0.05;
+  vec3 shadedColor = currentColor.rgb * ambientIntensity;
 
   vec3 n = normalize(ellipsoidNormalCameraSpace);