diff --git a/Assets/Scenes/ARPG.unity b/Assets/Scenes/ARPG.unity
index 370f1914b..9c650e2f0 100644
--- a/Assets/Scenes/ARPG.unity
+++ b/Assets/Scenes/ARPG.unity
@@ -8037,7 +8037,7 @@ Camera:
   m_Depth: 0
   m_CullingMask:
     serializedVersion: 2
-    m_Bits: 5632
+    m_Bits: 5120
   m_RenderingPath: 1
   m_TargetTexture: {fileID: 8400000, guid: 06ec5ef8a5830fc44b1ac1a6e123add5, type: 2}
   m_TargetDisplay: 0
diff --git a/Assets/Scripts/Editor/GravityFieldParityVerify.cs b/Assets/Scripts/Editor/GravityFieldParityVerify.cs
index c6de02c4a..7791fa62b 100644
--- a/Assets/Scripts/Editor/GravityFieldParityVerify.cs
+++ b/Assets/Scripts/Editor/GravityFieldParityVerify.cs
@@ -295,6 +295,17 @@ namespace Aetheria.EditorTools
                 }
                 if (seen < gravityTargets.Length) Fail("wiring", $"only {seen} gravity cameras found in ARPG.unity");
 
+                // The patch texture is half-float: it holds the patch layers only, the nebula reads gravity from the R32 surface.
+                var patchCameras = 0;
+                foreach (var camera in UnityEngine.Object.FindObjectsByType<Camera>(FindObjectsInactive.Include, FindObjectsSortMode.None))
+                {
+                    if (camera.targetTexture == null || camera.targetTexture.name != "Fog Patch Displacement") continue;
+                    patchCameras++;
+                    if ((camera.cullingMask & 1 << GravityLowering.FieldLayer) != 0)
+                        Fail("wiring", $"camera {camera.name} (target Fog Patch Displacement) culls layer {GravityLowering.FieldLayer}, the gravity layer");
+                }
+                if (patchCameras != 1) Fail("wiring", $"{patchCameras} Fog Patch Displacement cameras in ARPG.unity, expected 1");
+
                 // The map screen's gravity camera has no target until MapRenderer gives it one at run time.
                 var map = UnityEngine.Object.FindFirstObjectByType<MapRenderer>(FindObjectsInactive.Include);
                 if (map == null || map.GravityCamera == null) Fail("wiring", "no MapRenderer.GravityCamera in ARPG.unity");
diff --git a/Assets/Shaders/Brushes/GravityField.shader b/Assets/Shaders/Brushes/GravityField.shader
index b3987aab1..857d7c80e 100644
--- a/Assets/Shaders/Brushes/GravityField.shader
+++ b/Assets/Shaders/Brushes/GravityField.shader
@@ -1,5 +1,5 @@
 // Draws the zone's gravity: depth = -Zone.GetHeight at the world xz of every texel, into whichever gravity camera culls
-// layer 9 (Surface Displacement, Patch Displacement, Slime Gravity, both Map Gravity). One quad covers the zone; the
+// layer 9 (Surface Displacement, Slime Gravity, both Map Gravity). One quad covers the zone; the
 // law lives in Gravity.cginc, which mirrors ServerShared's GravityField.
 Shader "Brushes/Gravity Field" {
 Category {
diff --git a/Assets/Shaders/Volumetric.cginc b/Assets/Shaders/Volumetric.cginc
index ec95aedc3..2ceb66314 100644
--- a/Assets/Shaders/Volumetric.cginc
+++ b/Assets/Shaders/Volumetric.cginc
@@ -97,7 +97,9 @@ float cloudDensity(float3 pos, float surfaceDisp)
     float2 uv = getUV(pos.xz);
     const float dist = pos.y + surfaceDisp - _NebulaFloorOffset;
     const float patch = tex2Dlod(_NebulaPatch, half4(uv, 0, 0)).r;
-    const float patchDisp = tex2Dlod(_NebulaPatchHeight, half4(uv, 0, 0)).r;
+    // Gravity comes from the R32 surface height the caller sampled at this uv; the patch texture carries only the patch
+    // layers (sector waves, patch brushes), small enough for half floats.
+    const float patchDisp = surfaceDisp + tex2Dlod(_NebulaPatchHeight, half4(uv, 0, 0)).r;
 
     const float patchDensity = saturate((-abs(pos.y+patchDisp - _NebulaFloorOffset)+patch)/_NebulaPatchBlend)*_NebulaPatchDensity;
     const float floorDist = -dist;