diff --git a/src/AcDream.App/Rendering/Shaders/portal_stencil.frag b/src/AcDream.App/Rendering/Shaders/portal_stencil.frag
index ba71c36..7ff1582 100644
--- a/src/AcDream.App/Rendering/Shaders/portal_stencil.frag
+++ b/src/AcDream.App/Rendering/Shaders/portal_stencil.frag
@@ -10,25 +10,16 @@
 // Matches WorldBuilder's PortalStencil.frag at
 // references/WorldBuilder/Chorizite.OpenGLSDLBackend/Shaders/PortalStencil.frag
 
-out vec4 FragColor;
-
 uniform int uWriteFarDepth;
 
 void main()
 {
     if (uWriteFarDepth != 0)
     {
-        // Write far depth to clear the depth buffer in the portal region.
-        // This punches through the building exterior's depth so interior
-        // geometry at any depth can be rendered through the stencil mask.
         gl_FragDepth = 1.0;
     }
     else
     {
         gl_FragDepth = gl_FragCoord.z;
     }
-
-    // Color writes are suppressed via ColorMask(false) on the CPU side.
-    // Output is required by GLSL but will not be written to the framebuffer.
-    FragColor = vec4(0.0);
 }
diff --git a/src/AcDream.App/Rendering/Shaders/portal_stencil.vert b/src/AcDream.App/Rendering/Shaders/portal_stencil.vert
index adb4d60..bdd118f 100644
--- a/src/AcDream.App/Rendering/Shaders/portal_stencil.vert
+++ b/src/AcDream.App/Rendering/Shaders/portal_stencil.vert
@@ -12,14 +12,5 @@ uniform mat4 uViewProjection;
 
 void main()
 {
-    vec4 pos = uViewProjection * vec4(aPosition, 1.0);
-
-    // Prevent near-zero clipping issues when the camera is perfectly
-    // coplanar with the portal polygon.
-    if (abs(pos.w) < 0.001)
-    {
-        pos.w = pos.w < 0.0 ? -0.001 : 0.001;
-    }
-
-    gl_Position = pos;
+    gl_Position = uViewProjection * vec4(aPosition, 1.0);
 }