diff --git a/Source/Shaders/Appearances/AllMaterialAppearanceFS.glsl b/Source/Shaders/Appearances/AllMaterialAppearanceFS.glsl
index 672750f1f023..745f0fd43853 100644
--- a/Source/Shaders/Appearances/AllMaterialAppearanceFS.glsl
+++ b/Source/Shaders/Appearances/AllMaterialAppearanceFS.glsl
@@ -3,6 +3,7 @@ varying vec3 v_normalEC;
 varying vec3 v_tangentEC;
 varying vec3 v_bitangentEC;
 varying vec2 v_st;
+varying float v_inverse_depth;
 
 void main()
 {
@@ -26,4 +27,6 @@ void main()
 #else
     gl_FragColor = czm_phong(normalize(positionToEyeEC), material);
 #endif
+
+    czm_logDepth(v_inverse_depth);
 }
diff --git a/Source/Shaders/Appearances/AllMaterialAppearanceVS.glsl b/Source/Shaders/Appearances/AllMaterialAppearanceVS.glsl
index 6303472f2aaa..6cd5de782fcf 100644
--- a/Source/Shaders/Appearances/AllMaterialAppearanceVS.glsl
+++ b/Source/Shaders/Appearances/AllMaterialAppearanceVS.glsl
@@ -22,7 +22,7 @@ void main()
     v_tangentEC = czm_normal * tangent;                       // tangent in eye coordinates
     v_bitangentEC = czm_normal * bitangent;                   // bitangent in eye coordinates
     v_st = st;
-    v_inverse_depth = -1.0 / v_positionEC.z;
 
     gl_Position = czm_modelViewProjectionRelativeToEye * p;
+    v_inverse_depth = 1.0 / gl_Position.w;
 }
diff --git a/Source/Shaders/Appearances/BasicMaterialAppearanceFS.glsl b/Source/Shaders/Appearances/BasicMaterialAppearanceFS.glsl
index 95be0556c016..b26987f45854 100644
--- a/Source/Shaders/Appearances/BasicMaterialAppearanceFS.glsl
+++ b/Source/Shaders/Appearances/BasicMaterialAppearanceFS.glsl
@@ -1,9 +1,10 @@
 varying vec3 v_positionEC;
 varying vec3 v_normalEC;
+varying float v_inverse_depth;
 
 void main()
 {
-    vec3 positionToEyeEC = -v_positionEC; 
+    vec3 positionToEyeEC = -v_positionEC;
 
     vec3 normalEC = normalize(v_normalEC);
 #ifdef FACE_FORWARD
@@ -14,10 +15,12 @@ void main()
     materialInput.normalEC = normalEC;
     materialInput.positionToEyeEC = positionToEyeEC;
     czm_material material = czm_getMaterial(materialInput);
-    
-#ifdef FLAT    
+
+#ifdef FLAT
     gl_FragColor = vec4(material.diffuse + material.emission, material.alpha);
 #else
     gl_FragColor = czm_phong(normalize(positionToEyeEC), material);
 #endif
+
+    czm_logDepth(v_inverse_depth);
 }
diff --git a/Source/Shaders/Appearances/BasicMaterialAppearanceVS.glsl b/Source/Shaders/Appearances/BasicMaterialAppearanceVS.glsl
index 0d496a877e7c..ea184f96fab0 100644
--- a/Source/Shaders/Appearances/BasicMaterialAppearanceVS.glsl
+++ b/Source/Shaders/Appearances/BasicMaterialAppearanceVS.glsl
@@ -5,13 +5,15 @@ attribute float batchId;
 
 varying vec3 v_positionEC;
 varying vec3 v_normalEC;
+varying float v_inverse_depth;
 
-void main() 
+void main()
 {
     vec4 p = czm_computePosition();
 
     v_positionEC = (czm_modelViewRelativeToEye * p).xyz;      // position in eye coordinates
     v_normalEC = czm_normal * normal;                         // normal in eye coordinates
-    
+
     gl_Position = czm_modelViewProjectionRelativeToEye * p;
+    v_inverse_depth = 1.0 / gl_Position.w;
 }
diff --git a/Source/Shaders/Appearances/EllipsoidSurfaceAppearanceFS.glsl b/Source/Shaders/Appearances/EllipsoidSurfaceAppearanceFS.glsl
index 7b1054b4acc9..19db3fbf7a99 100644
--- a/Source/Shaders/Appearances/EllipsoidSurfaceAppearanceFS.glsl
+++ b/Source/Shaders/Appearances/EllipsoidSurfaceAppearanceFS.glsl
@@ -1,33 +1,36 @@
 varying vec3 v_positionMC;
 varying vec3 v_positionEC;
 varying vec2 v_st;
+varying float v_inverse_depth;
 
 void main()
 {
     czm_materialInput materialInput;
-    
+
     vec3 normalEC = normalize(czm_normal3D * czm_geodeticSurfaceNormal(v_positionMC, vec3(0.0), vec3(1.0)));
 #ifdef FACE_FORWARD
     normalEC = faceforward(normalEC, vec3(0.0, 0.0, 1.0), -normalEC);
 #endif
-    
+
     materialInput.s = v_st.s;
     materialInput.st = v_st;
     materialInput.str = vec3(v_st, 0.0);
-    
+
     // Convert tangent space material normal to eye space
     materialInput.normalEC = normalEC;
     materialInput.tangentToEyeMatrix = czm_eastNorthUpToEyeCoordinates(v_positionMC, materialInput.normalEC);
-    
+
     // Convert view vector to world space
-    vec3 positionToEyeEC = -v_positionEC; 
+    vec3 positionToEyeEC = -v_positionEC;
     materialInput.positionToEyeEC = positionToEyeEC;
 
     czm_material material = czm_getMaterial(materialInput);
-    
-#ifdef FLAT    
+
+#ifdef FLAT
     gl_FragColor = vec4(material.diffuse + material.emission, material.alpha);
 #else
     gl_FragColor = czm_phong(normalize(positionToEyeEC), material);
 #endif
+
+    czm_logDepth(v_inverse_depth);
 }
diff --git a/Source/Shaders/Appearances/EllipsoidSurfaceAppearanceVS.glsl b/Source/Shaders/Appearances/EllipsoidSurfaceAppearanceVS.glsl
index 1bd13c9a5382..98d73454ce9d 100644
--- a/Source/Shaders/Appearances/EllipsoidSurfaceAppearanceVS.glsl
+++ b/Source/Shaders/Appearances/EllipsoidSurfaceAppearanceVS.glsl
@@ -6,14 +6,16 @@ attribute float batchId;
 varying vec3 v_positionMC;
 varying vec3 v_positionEC;
 varying vec2 v_st;
+varying float v_inverse_depth;
 
-void main() 
+void main()
 {
     vec4 p = czm_computePosition();
 
     v_positionMC = position3DHigh + position3DLow;           // position in model coordinates
     v_positionEC = (czm_modelViewRelativeToEye * p).xyz;     // position in eye coordinates
     v_st = st;
-    
+
     gl_Position = czm_modelViewProjectionRelativeToEye * p;
+    v_inverse_depth = 1.0 / gl_Position.w;
 }
diff --git a/Source/Shaders/PointPrimitiveCollectionFS.glsl b/Source/Shaders/PointPrimitiveCollectionFS.glsl
index 42b5703fe74d..7cb1e9c997fd 100644
--- a/Source/Shaders/PointPrimitiveCollectionFS.glsl
+++ b/Source/Shaders/PointPrimitiveCollectionFS.glsl
@@ -2,6 +2,7 @@ varying vec4 v_color;
 varying vec4 v_outlineColor;
 varying float v_innerPercent;
 varying float v_pixelDistance;
+varying float v_inverse_depth;
 
 #ifdef RENDER_FOR_PICK
 varying vec4 v_pickColor;
@@ -46,4 +47,5 @@ void main()
 #else
     gl_FragColor = color;
 #endif
+    czm_logDepth(v_inverse_depth);
 }
diff --git a/Source/Shaders/PointPrimitiveCollectionVS.glsl b/Source/Shaders/PointPrimitiveCollectionVS.glsl
index 05c576606b8d..abf8f86761d3 100644
--- a/Source/Shaders/PointPrimitiveCollectionVS.glsl
+++ b/Source/Shaders/PointPrimitiveCollectionVS.glsl
@@ -11,6 +11,7 @@ varying vec4 v_color;
 varying vec4 v_outlineColor;
 varying float v_innerPercent;
 varying float v_pixelDistance;
+varying float v_inverse_depth;
 
 #ifdef RENDER_FOR_PICK
 varying vec4 v_pickColor;
@@ -180,6 +181,8 @@ void main()
     v_pixelDistance = 2.0 / totalSize;
     gl_PointSize = totalSize;
 
+    v_inverse_depth = 1.0 / (czm_modelViewProjectionRelativeToEye * p).w;
+
 #ifdef RENDER_FOR_PICK
     v_pickColor = pickColor;
 #endif
diff --git a/Source/Shaders/Vector3DTilePolylinesVS.glsl b/Source/Shaders/Vector3DTilePolylinesVS.glsl
index e30c2559ee63..832ab7d80428 100644
--- a/Source/Shaders/Vector3DTilePolylinesVS.glsl
+++ b/Source/Shaders/Vector3DTilePolylinesVS.glsl
@@ -6,6 +6,8 @@ attribute float a_batchId;
 
 uniform mat4 u_modifiedModelView;
 
+varying float v_inverse_depth;
+
 void main()
 {
     float expandDir = expandAndWidth.x;
@@ -19,4 +21,5 @@ void main()
     float angle;
     vec4 positionWC = getPolylineWindowCoordinatesEC(p, prev, next, expandDir, width, usePrev, angle);
     gl_Position = czm_viewportOrthographic * positionWC;
+    v_inverse_depth = 1.0 / (czm_projection * u_modifiedModelView * currentPosition).w;
 }