diff --git a/neo/engine/opengl/gl_d3d12shim.cpp b/neo/engine/opengl/gl_d3d12shim.cpp
index 226c5117..ca6d2799 100644
--- a/neo/engine/opengl/gl_d3d12shim.cpp
+++ b/neo/engine/opengl/gl_d3d12shim.cpp
@@ -4512,7 +4512,12 @@ float3 QD3D12_SafeNormalizeOr(float3 v, float3 fallbackDir)
 float4 PSScreenDecals(VSOut i) : SV_Target0
 {
     uint2 pixel = uint2(i.pos.xy);
-    float3 worldPos = gScreenDecalPosition.Load(int3(pixel, 0)).xyz;
+    float4 positionSample = gScreenDecalPosition.Load(int3(pixel, 0));
+    uint geometryBits = (uint)round(max(positionSample.w, 0.0));
+    if ((geometryBits & 1u) != 0u)
+        return float4(0.0, 0.0, 0.0, 0.0);
+
+    float3 worldPos = positionSample.xyz;
     float3 decalColor = 0.0;
     float decalAlpha = 0.0;
     uint decalIndex = (uint)gScreenDecalIndex;