Add existing to tracked

node_modules/@cesium/engine/Source/Shaders/Vector3DTileClampedPolylinesFS.glsl

@@ -0,0 +1,48 @@
+in vec4 v_startPlaneEC;
+in vec4 v_endPlaneEC;
+in vec4 v_rightPlaneEC;
+in float v_halfWidth;
+in vec3 v_volumeUpEC;
+
+uniform vec4 u_highlightColor;
+void main()
+{
+    float logDepthOrDepth = czm_branchFreeTernary(czm_sceneMode == czm_sceneMode2D, gl_FragCoord.z, czm_unpackDepth(texture(czm_globeDepthTexture, gl_FragCoord.xy / czm_viewport.zw)));
+
+    // Discard for sky
+    if (logDepthOrDepth == 0.0) {
+#ifdef DEBUG_SHOW_VOLUME
+        out_FragColor = vec4(0.0, 0.0, 1.0, 0.5);
+        return;
+#else // DEBUG_SHOW_VOLUME
+        discard;
+#endif // DEBUG_SHOW_VOLUME
+    }
+
+    vec4 eyeCoordinate = czm_windowToEyeCoordinates(gl_FragCoord.xy, logDepthOrDepth);
+    eyeCoordinate /= eyeCoordinate.w;
+
+    float halfMaxWidth = v_halfWidth * czm_metersPerPixel(eyeCoordinate);
+
+    // Expand halfMaxWidth if direction to camera is almost perpendicular with the volume's up direction
+    halfMaxWidth += halfMaxWidth * (1.0 - dot(-normalize(eyeCoordinate.xyz), v_volumeUpEC));
+
+    // Check distance of the eye coordinate against the right-facing plane
+    float widthwiseDistance = czm_planeDistance(v_rightPlaneEC, eyeCoordinate.xyz);
+
+    // Check eye coordinate against the mitering planes
+    float distanceFromStart = czm_planeDistance(v_startPlaneEC, eyeCoordinate.xyz);
+    float distanceFromEnd = czm_planeDistance(v_endPlaneEC, eyeCoordinate.xyz);
+
+    if (abs(widthwiseDistance) > halfMaxWidth || distanceFromStart < 0.0 || distanceFromEnd < 0.0) {
+#ifdef DEBUG_SHOW_VOLUME
+        out_FragColor = vec4(logDepthOrDepth, 0.0, 0.0, 0.5);
+        return;
+#else // DEBUG_SHOW_VOLUME
+        discard;
+#endif // DEBUG_SHOW_VOLUME
+    }
+    out_FragColor = u_highlightColor;
+
+    czm_writeDepthClamp();
+}