diff --git a/radiantcore/rendersystem/backend/LightInteractions.cpp b/radiantcore/rendersystem/backend/LightInteractions.cpp
index 24fd294011..6d49b8d223 100644
--- a/radiantcore/rendersystem/backend/LightInteractions.cpp
+++ b/radiantcore/rendersystem/backend/LightInteractions.cpp
@@ -8,6 +8,20 @@
 namespace render
 {
 
+LightInteractions::LightInteractions(RendererLight& light, IGeometryStore& store) :
+    _light(light),
+    _store(store),
+    _lightBounds(light.lightAABB()),
+    _interactionDrawCalls(0),
+    _depthDrawCalls(0),
+    _objectCount(0),
+    _shadowMapDrawCalls(0),
+    _shadowLightIndex(-1)
+{
+    // Consider the "noshadows" flag and the setting of the light material
+    _isShadowCasting = _light.isShadowCasting() && _light.getShader() && _light.getShader()->getMaterial()->lightCastsShadows();
+}
+
 void LightInteractions::addObject(IRenderableObject& object, IRenderEntity& entity, OpenGLShader* shader)
 {
     auto& objectsByMaterial = _objectsByEntity.emplace(
@@ -26,9 +40,9 @@ bool LightInteractions::isInView(const IRenderView& view)
     return view.TestAABB(_lightBounds) != VOLUME_OUTSIDE;
 }
 
-bool LightInteractions::isShadowCasting()
+bool LightInteractions::isShadowCasting() const
 {
-    return _light.isShadowCasting();
+    return _isShadowCasting;
 }
 
 void LightInteractions::collectSurfaces(const IRenderView& view, const std::set<IRenderEntityPtr>& entities)
@@ -156,7 +170,8 @@ void LightInteractions::drawShadowMap(OpenGLState& state, const Rectangle& recta
         {
             auto depthFillPass = shader->getDepthFillPass();
 
-            if (!depthFillPass) continue;
+            // Skip shaders not affecting scene depth, and materials not casting any shadow
+            if (!depthFillPass || !shader->getMaterial()->surfaceCastsShadow()) continue;
 
             setupAlphaTest(state, shader, depthFillPass, program, renderTime, entity);
 
diff --git a/radiantcore/rendersystem/backend/LightInteractions.h b/radiantcore/rendersystem/backend/LightInteractions.h
index dbabd75e62..0241cf1964 100644
--- a/radiantcore/rendersystem/backend/LightInteractions.h
+++ b/radiantcore/rendersystem/backend/LightInteractions.h
@@ -4,7 +4,6 @@
 #include <vector>
 #include <set>
 #include "irender.h"
-#include "isurfacerenderer.h"
 #include "irenderableobject.h"
 #include "irenderview.h"
 #include "render/Rectangle.h"
@@ -48,18 +47,10 @@ class LightInteractions
     std::size_t _shadowMapDrawCalls;
 
     int _shadowLightIndex;
+    bool _isShadowCasting;
 
 public:
-    LightInteractions(RendererLight& light, IGeometryStore& store) :
-        _light(light),
-        _store(store),
-        _lightBounds(light.lightAABB()),
-        _interactionDrawCalls(0),
-        _depthDrawCalls(0),
-        _objectCount(0),
-        _shadowMapDrawCalls(0),
-        _shadowLightIndex(-1)
-    {}
+    LightInteractions(RendererLight& light, IGeometryStore& store);
 
     const Vector3& getBoundsCenter() const
     {
@@ -110,7 +101,7 @@ class LightInteractions
 
     bool isInView(const IRenderView& view);
 
-    bool isShadowCasting();
+    bool isShadowCasting() const;
 
     void collectSurfaces(const IRenderView& view, const std::set<IRenderEntityPtr>& entities);