diff --git a/src/gl/dynlights/gl_shadowmap.cpp b/src/gl/dynlights/gl_shadowmap.cpp
index 67403b308..bc0ec9da7 100644
--- a/src/gl/dynlights/gl_shadowmap.cpp
+++ b/src/gl/dynlights/gl_shadowmap.cpp
@@ -43,8 +43,7 @@ void FShadowMap::Update()
 
 	UpdateCycles.Clock();
 
-	UploadAABBTree();
-	UploadLights();
+	PerformUpdate();
 
 	FGLDebug::PushGroup("ShadowMap");
 	FGLPostProcessState savedState;
@@ -54,9 +53,6 @@ void FShadowMap::Update()
 	GLRenderer->mShadowMapShader->Bind(NOQUEUE);
 	GLRenderer->mShadowMapShader->Uniforms->ShadowmapQuality = gl_shadowmap_quality;
 	GLRenderer->mShadowMapShader->Uniforms.Set();
-	mLightList->BindBase();
-	mNodesBuffer->BindBase();
-	mLinesBuffer->BindBase();
 
 	glViewport(0, 0, gl_shadowmap_quality, 1024);
 	GLRenderer->RenderScreenQuad();
@@ -71,34 +67,3 @@ void FShadowMap::Update()
 	UpdateCycles.Unclock();
 }
 
-
-void FShadowMap::UploadLights()
-{
-	CollectLights();
-	
-	if (mLightList == nullptr)
-		mLightList = screen->CreateDataBuffer(4, true);
-
-	mLightList->SetData(sizeof(float) * mLights.Size(), &mLights[0]);
-}
-
-
-void FShadowMap::UploadAABBTree()
-{
-	if (!ValidateAABBTree())
-	{
-		mNodesBuffer = screen->CreateDataBuffer(2, true);
-		mNodesBuffer->SetData(sizeof(hwrenderer::AABBTreeNode) * mAABBTree->nodes.Size(), &mAABBTree->nodes[0]);
-
-		mLinesBuffer = screen->CreateDataBuffer(3, true);
-		mLinesBuffer->SetData(sizeof(hwrenderer::AABBTreeLine) * mAABBTree->lines.Size(), &mAABBTree->lines[0]);
-	}
-}
-
-void FShadowMap::Clear()
-{
-	if (mLightList) delete mLightList;
-	if (mNodesBuffer) delete mNodesBuffer;
-	if (mLinesBuffer) delete mLinesBuffer;
-}
-
diff --git a/src/gl/dynlights/gl_shadowmap.h b/src/gl/dynlights/gl_shadowmap.h
index e415bf23d..958c006e1 100644
--- a/src/gl/dynlights/gl_shadowmap.h
+++ b/src/gl/dynlights/gl_shadowmap.h
@@ -8,25 +8,6 @@ class IDataBuffer;
 class FShadowMap : public IShadowMap
 {
 public:
-	~FShadowMap() { Clear(); }
-
-	// Release resources
-	void Clear() override;
-
 	// Update shadow map texture
 	void Update() override;
-
-private:
-	// Upload the AABB-tree to the GPU
-	void UploadAABBTree();
-
-	// Upload light list to the GPU
-	void UploadLights();
-
-	// OpenGL storage buffer with the list of lights in the shadow map texture
-	IDataBuffer *mLightList = nullptr;
-
-	// OpenGL storage buffers for the AABB tree
-	IDataBuffer *mNodesBuffer = nullptr;
-	IDataBuffer *mLinesBuffer = nullptr;
 };
diff --git a/src/hwrenderer/dynlights/hw_shadowmap.cpp b/src/hwrenderer/dynlights/hw_shadowmap.cpp
index 027942f46..c5110ce87 100644
--- a/src/hwrenderer/dynlights/hw_shadowmap.cpp
+++ b/src/hwrenderer/dynlights/hw_shadowmap.cpp
@@ -23,6 +23,7 @@
 #include "hwrenderer/dynlights/hw_shadowmap.h"
 #include "hwrenderer/utility/hw_cvars.h"
 #include "hwrenderer/dynlights/hw_dynlightdata.h"
+#include "hwrenderer/data/buffers.h"
 #include "stats.h"
 #include "g_levellocals.h"
 
@@ -160,3 +161,43 @@ bool IShadowMap::ValidateAABBTree()
 	mAABBTree.reset(new hwrenderer::LevelAABBTree());
 	return false;
 }
+
+void IShadowMap::PerformUpdate()
+{
+	UploadAABBTree();
+	UploadLights();
+	mLightList->BindBase();
+	mNodesBuffer->BindBase();
+	mLinesBuffer->BindBase();
+}
+
+void IShadowMap::UploadLights()
+{
+	CollectLights();
+
+	if (mLightList == nullptr)
+		mLightList = screen->CreateDataBuffer(4, true);
+
+	mLightList->SetData(sizeof(float) * mLights.Size(), &mLights[0]);
+}
+
+
+void IShadowMap::UploadAABBTree()
+{
+	if (!ValidateAABBTree())
+	{
+		mNodesBuffer = screen->CreateDataBuffer(2, true);
+		mNodesBuffer->SetData(sizeof(hwrenderer::AABBTreeNode) * mAABBTree->nodes.Size(), &mAABBTree->nodes[0]);
+
+		mLinesBuffer = screen->CreateDataBuffer(3, true);
+		mLinesBuffer->SetData(sizeof(hwrenderer::AABBTreeLine) * mAABBTree->lines.Size(), &mAABBTree->lines[0]);
+	}
+}
+
+IShadowMap::~IShadowMap()
+{
+	if (mLightList) delete mLightList;
+	if (mNodesBuffer) delete mNodesBuffer;
+	if (mLinesBuffer) delete mLinesBuffer;
+}
+
diff --git a/src/hwrenderer/dynlights/hw_shadowmap.h b/src/hwrenderer/dynlights/hw_shadowmap.h
index 492993919..02ad3ab59 100644
--- a/src/hwrenderer/dynlights/hw_shadowmap.h
+++ b/src/hwrenderer/dynlights/hw_shadowmap.h
@@ -7,15 +7,13 @@
 
 class ADynamicLight;
 struct level_info_t;
+class IDataBuffer;
 
 class IShadowMap
 {
 public:
 	IShadowMap() { }
-	virtual ~IShadowMap() { }
-
-	// Release resources
-	virtual void Clear() = 0;
+	virtual ~IShadowMap();
 
 	// Update shadow map texture
 	virtual void Update() = 0;
@@ -33,6 +31,13 @@ public:
 protected:
 	void CollectLights();
 	bool ValidateAABBTree();
+	void PerformUpdate();
+
+	// Upload the AABB-tree to the GPU
+	void UploadAABBTree();
+
+	// Upload light list to the GPU
+	void UploadLights();
 
 	// Working buffer for creating the list of lights. Stored here to avoid allocating memory each frame
 	TArray<float> mLights;
@@ -47,4 +52,12 @@ protected:
 
 	IShadowMap(const IShadowMap &) = delete;
 	IShadowMap &operator=(IShadowMap &) = delete;
+
+	// OpenGL storage buffer with the list of lights in the shadow map texture
+	IDataBuffer *mLightList = nullptr;
+
+	// OpenGL storage buffers for the AABB tree
+	IDataBuffer *mNodesBuffer = nullptr;
+	IDataBuffer *mLinesBuffer = nullptr;
+
 };