Add existing to tracked

node_modules/@cesium/engine/Source/Shaders/SkyAtmosphereFS.glsl

@@ -0,0 +1,59 @@
+in vec3 v_outerPositionWC;
+
+uniform vec3 u_hsbShift;
+
+#ifndef PER_FRAGMENT_ATMOSPHERE
+in vec3 v_mieColor;
+in vec3 v_rayleighColor;
+in float v_opacity;
+in float v_translucent;
+#endif
+
+void main (void)
+{
+    float lightEnum = u_radiiAndDynamicAtmosphereColor.z;
+    vec3 lightDirection = czm_getDynamicAtmosphereLightDirection(v_outerPositionWC, lightEnum);
+
+    vec3 mieColor;
+    vec3 rayleighColor;
+    float opacity;
+    float translucent;
+
+    #ifdef PER_FRAGMENT_ATMOSPHERE
+        computeAtmosphereScattering(
+            v_outerPositionWC,
+            lightDirection,
+            rayleighColor,
+            mieColor,
+            opacity,
+            translucent
+        );
+    #else
+        mieColor = v_mieColor;
+        rayleighColor = v_rayleighColor;
+        opacity = v_opacity;
+        translucent = v_translucent;
+    #endif
+
+    vec4 color = computeAtmosphereColor(v_outerPositionWC, lightDirection, rayleighColor, mieColor, opacity);
+
+    #ifndef HDR
+        color.rgb = czm_pbrNeutralTonemapping(color.rgb);
+        color.rgb = czm_inverseGamma(color.rgb);
+    #endif
+
+    #ifdef COLOR_CORRECT
+        const bool ignoreBlackPixels = true;
+        color.rgb = czm_applyHSBShift(color.rgb, u_hsbShift, ignoreBlackPixels);
+    #endif
+
+    // For the parts of the sky atmosphere that are not behind a translucent globe,
+    // we mix in the default opacity so that the sky atmosphere still appears at distance.
+    // This is needed because the opacity in the sky atmosphere is initially adjusted based
+    // on the camera height.
+    if (translucent == 0.0) {
+        color.a = mix(color.b, 1.0, color.a) * smoothstep(0.0, 1.0, czm_morphTime);
+    }
+
+    out_FragColor = color;
+}