diff --git a/engine/include/XCEngine/RHI/ICommandList.h b/engine/include/XCEngine/RHI/ICommandList.h
index 00fc2a40..4629725b 100644
--- a/engine/include/XCEngine/RHI/ICommandList.h
+++ b/engine/include/XCEngine/RHI/ICommandList.h
@@ -25,6 +25,9 @@ public:
     virtual void SetIndexBuffer(IResource* buffer, uint32_t offset = 0) = 0;
     virtual void SetDescriptorHeap(IDescriptorHeap* heap) = 0;
     virtual void SetGraphicsDescriptorTable(uint32_t rootParameterIndex, uint64_t baseDescriptor) = 0;
+    virtual void SetGraphicsRootConstantBufferView(uint32_t slot, IResource* buffer) = 0;
+    virtual void SetGraphicsRootConstantBufferViewCBV(uint32_t slot, void* nativeResource) = 0;
+    virtual void SetGraphicsRoot32BitConstants(uint32_t rootParameterIndex, uint32_t num32BitValues, const void* data, uint32_t destOffsetIn32BitValues) = 0;
     virtual void SetComputeDescriptorTable(uint32_t rootParameterIndex, uint64_t baseDescriptor) = 0;
     virtual void DrawInstanced(uint32_t vertexCountPerInstance, uint32_t instanceCount, uint32_t startVertex, uint32_t startInstance) = 0;
     virtual void DrawIndexedInstanced(uint32_t indexCountPerInstance, uint32_t instanceCount, uint32_t startIndex, int32_t baseVertex, uint32_t startInstance) = 0;
diff --git a/engine/include/XCEngine/Rendering/RenderContext.h b/engine/include/XCEngine/Rendering/RenderContext.h
index 9303141e..09fcbfac 100644
--- a/engine/include/XCEngine/Rendering/RenderContext.h
+++ b/engine/include/XCEngine/Rendering/RenderContext.h
@@ -7,6 +7,8 @@
 namespace XCEngine {
 namespace RHI {
 
+class D3D12DescriptorHeap;
+
 class RenderContext {
 public:
     RenderContext(D3D12Device* device);
@@ -19,9 +21,14 @@ public:
     void EndFrame();
     
     ICommandList* GetCommandList() { return m_commandList; }
+    ICommandAllocator* GetCommandAllocator() { return m_commandAllocator; }
     ISwapChain* GetSwapChain() { return m_swapChain; }
     IRenderTarget* GetCurrentRenderTarget() { return m_currentRenderTarget; }
     IDepthStencil* GetDepthStencil() { return m_depthStencil; }
+    IFence* GetFence() { return m_fence; }
+    uint64_t GetFenceValue() { return m_fenceValue; }
+    void IncrementFenceValue() { m_fenceValue++; }
+    void WaitForCompletionOfCommandList() { m_fence->Wait(m_fenceValue); }
     
     void SetViewport(float width, float height);
     void SetScissor(int32_t width, int32_t height);
@@ -37,6 +44,7 @@ private:
     ISwapChain* m_swapChain = nullptr;
     IRenderTarget* m_currentRenderTarget = nullptr;
     IDepthStencil* m_depthStencil = nullptr;
+    D3D12DescriptorHeap* m_dsvHeap = nullptr;
     uint64_t m_fenceValue = 0;
     uint32_t m_width = 0;
     uint32_t m_height = 0;
diff --git a/engine/include/XCEngine/Rendering/RenderTarget.h b/engine/include/XCEngine/Rendering/RenderTarget.h
index d620a39b..086140b9 100644
--- a/engine/include/XCEngine/Rendering/RenderTarget.h
+++ b/engine/include/XCEngine/Rendering/RenderTarget.h
@@ -7,10 +7,12 @@ namespace RHI {
 
 class D3D12Device;
 class D3D12SwapChain;
+class D3D12DescriptorHeap;
 
 class IDepthStencil : public ITexture2D {
 public:
     virtual ~IDepthStencil() = default;
+    virtual void SetDSVHeap(void* heap) = 0;
 };
 
 class IRenderTarget : public ITexture2D {
diff --git a/engine/src/RHI/D3D12/D3D12Device.cpp b/engine/src/RHI/D3D12/D3D12Device.cpp
index cd1332e3..70615109 100644
--- a/engine/src/RHI/D3D12/D3D12Device.cpp
+++ b/engine/src/RHI/D3D12/D3D12Device.cpp
@@ -751,6 +751,22 @@ void D3D12CommandList::SetGraphicsDescriptorTable(uint32_t rootParameterIndex, u
     m_commandList->SetGraphicsRootDescriptorTable(rootParameterIndex, D3D12_GPU_DESCRIPTOR_HANDLE{ baseDescriptor });
 }
 
+void D3D12CommandList::SetGraphicsRootConstantBufferView(uint32_t slot, IResource* buffer) {
+    if (buffer) {
+        D3D12Resource* d3dBuffer = static_cast<D3D12Resource*>(buffer);
+        m_commandList->SetGraphicsRootConstantBufferView(slot, d3dBuffer->GetNative()->GetGPUVirtualAddress());
+    }
+}
+
+void D3D12CommandList::SetGraphicsRootConstantBufferViewCBV(uint32_t slot, void* nativeResource) {
+    ID3D12Resource* resource = static_cast<ID3D12Resource*>(nativeResource);
+    m_commandList->SetGraphicsRootConstantBufferView(slot, resource->GetGPUVirtualAddress());
+}
+
+void D3D12CommandList::SetGraphicsRoot32BitConstants(uint32_t rootParameterIndex, uint32_t num32BitValues, const void* data, uint32_t destOffsetIn32BitValues) {
+    m_commandList->SetGraphicsRoot32BitConstants(rootParameterIndex, num32BitValues, data, destOffsetIn32BitValues);
+}
+
 void D3D12CommandList::SetComputeDescriptorTable(uint32_t rootParameterIndex, uint64_t baseDescriptor) {
     m_commandList->SetComputeRootDescriptorTable(rootParameterIndex, D3D12_GPU_DESCRIPTOR_HANDLE{ baseDescriptor });
 }
diff --git a/engine/src/RHI/D3D12/D3D12RHI.h b/engine/src/RHI/D3D12/D3D12RHI.h
index dbcf528f..52a9d30d 100644
--- a/engine/src/RHI/D3D12/D3D12RHI.h
+++ b/engine/src/RHI/D3D12/D3D12RHI.h
@@ -159,6 +159,9 @@ public:
     void SetIndexBuffer(IResource* buffer, uint32_t offset) override;
     void SetDescriptorHeap(IDescriptorHeap* heap) override;
     void SetGraphicsDescriptorTable(uint32_t rootParameterIndex, uint64_t baseDescriptor) override;
+    void SetGraphicsRootConstantBufferView(uint32_t slot, IResource* buffer) override;
+    void SetGraphicsRootConstantBufferViewCBV(uint32_t slot, void* nativeResource) override;
+    void SetGraphicsRoot32BitConstants(uint32_t rootParameterIndex, uint32_t num32BitValues, const void* data, uint32_t destOffsetIn32BitValues) override;
     void SetComputeDescriptorTable(uint32_t rootParameterIndex, uint64_t baseDescriptor) override;
     void DrawInstanced(uint32_t vertexCountPerInstance, uint32_t instanceCount, uint32_t startVertex, uint32_t startInstance) override;
     void DrawIndexedInstanced(uint32_t indexCountPerInstance, uint32_t instanceCount, uint32_t startIndex, int32_t baseVertex, uint32_t startInstance) override;
diff --git a/engine/src/RHI/D3D12/D3D12RenderContext.cpp b/engine/src/RHI/D3D12/D3D12RenderContext.cpp
index aaed20fd..899b5cc5 100644
--- a/engine/src/RHI/D3D12/D3D12RenderContext.cpp
+++ b/engine/src/RHI/D3D12/D3D12RenderContext.cpp
@@ -35,10 +35,20 @@ bool RenderContext::Initialize(uint32_t width, uint32_t height) {
         return false;
     }
     
+    DescriptorHeapDesc dsvHeapDesc = {};
+    dsvHeapDesc.type = DescriptorHeapType::DSV;
+    dsvHeapDesc.count = 1;
+    dsvHeapDesc.shaderVisible = false;
+    if (!m_device->CreateDescriptorHeap((IDescriptorHeap**)&m_dsvHeap, dsvHeapDesc)) {
+        return false;
+    }
+    
     if (!CreateDepthStencil(m_device, width, height, Format::D24_UNorm_S8_UInt, &m_depthStencil)) {
         return false;
     }
     
+    m_depthStencil->SetDSVHeap(m_dsvHeap);
+    
     return true;
 }
 
@@ -56,16 +66,20 @@ void RenderContext::Shutdown() {
 }
 
 void RenderContext::BeginFrame() {
+    EngineLog("BeginFrame: start");
+    
+    m_fence->Wait(m_fenceValue);
+    
     m_commandAllocator->Reset();
     m_commandList->Reset(m_commandAllocator);
     
     uint32_t bufferIndex = m_swapChain->GetCurrentBufferIndex();
+    EngineLog("BeginFrame: bufferIndex=%u", bufferIndex);
     
     D3D12CommandList* cmdList = (D3D12CommandList*)m_commandList;
     ID3D12GraphicsCommandList* d3dCmdList = cmdList->GetNative();
     
-    void* currentRT = m_swapChain->GetCurrentRenderTarget();
-    void* currentDS = m_depthStencil->GetDSV();
+    m_depthStencil->CreateDSV();
     
     ID3D12Resource* buffer = (ID3D12Resource*)m_swapChain->GetBuffer(bufferIndex);
     
@@ -76,6 +90,24 @@ void RenderContext::BeginFrame() {
     barrier.Transition.StateAfter = D3D12_RESOURCE_STATE_RENDER_TARGET;
     barrier.Transition.Subresource = D3D12_RESOURCE_BARRIER_ALL_SUBRESOURCES;
     d3dCmdList->ResourceBarrier(1, &barrier);
+    EngineLog("BeginFrame: after ResourceBarrier");
+    
+    void* currentRT = m_swapChain->GetCurrentRenderTarget();
+    void* currentDS = m_depthStencil->GetDSV();
+    EngineLog("BeginFrame: RTV=%llu, DSV=%llu", (UINT64)currentRT, (UINT64)currentDS);
+    
+    void* targets[] = { currentRT };
+    m_commandList->SetRenderTargets(targets, 1, currentDS);
+    EngineLog("BeginFrame: after SetRenderTargets");
+    
+    float clearColor[4] = { 1.0f, 0.0f, 0.0f, 1.0f };
+    m_commandList->ClearRenderTargetView(currentRT, clearColor);
+    EngineLog("BeginFrame: after ClearRenderTargetView");
+    
+    m_commandList->ClearDepthStencilView(currentDS, 1.0f, 0);
+    EngineLog("BeginFrame: after ClearDepthStencilView");
+    
+    EngineLog("BeginFrame: done");
 }
 
 void RenderContext::EndFrame() {
@@ -106,10 +138,6 @@ void RenderContext::EndFrame() {
     D3D12Fence* d3d12Fence = static_cast<D3D12Fence*>(m_fence);
     queue->Signal(d3d12Fence->GetNativeFence(), m_fenceValue);
     EngineLog("EndFrame: after Signal");
-    
-    EngineLog("EndFrame: before Wait");
-    m_fence->Wait(m_fenceValue);
-    EngineLog("EndFrame: after Wait");
 }
 
 void RenderContext::SetViewport(float width, float height) {
@@ -139,6 +167,9 @@ void RenderContext::SetScissor(int32_t width, int32_t height) {
 void RenderContext::ClearRenderTarget(const float color[4]) {
     EngineLog("ClearRT: start");
     void* rtv = m_swapChain->GetCurrentRenderTarget();
+    void* ds = m_depthStencil->GetDSV();
+    void* targets[] = { rtv };
+    m_commandList->SetRenderTargets(targets, 1, ds);
     EngineLog("ClearRT: rtv=%p", rtv);
     m_commandList->ClearRenderTargetView(rtv, color);
     EngineLog("ClearRT: done");
diff --git a/engine/src/RHI/D3D12/D3D12RenderTarget.cpp b/engine/src/RHI/D3D12/D3D12RenderTarget.cpp
index 8061891e..eb304ba6 100644
--- a/engine/src/RHI/D3D12/D3D12RenderTarget.cpp
+++ b/engine/src/RHI/D3D12/D3D12RenderTarget.cpp
@@ -8,14 +8,25 @@ namespace RHI {
 
 void D3D12DepthStencil::CreateDSV() {
     EngineLog("CreateDSV: start, m_device=%p, m_resource=%p", m_device, m_resource.Get());
-    if (m_dsvHandle.ptr != 0) return;
+    if (m_dsvHandle.ptr != 0) {
+        EngineLog("CreateDSV: already created");
+        return;
+    }
+    if (!m_dsvHeap) {
+        EngineLog("CreateDSV: ERROR - no DSV heap!");
+        return;
+    }
     EngineLog("CreateDSV: calling CreateDepthStencilView");
     D3D12_DEPTH_STENCIL_VIEW_DESC dsvDesc = {};
     dsvDesc.Format = FormatToDXGIFormat(m_desc.format);
     EngineLog("CreateDSV: format=%d", dsvDesc.Format);
     dsvDesc.ViewDimension = D3D12_DSV_DIMENSION_TEXTURE2D;
+    
+    D3D12_CPU_DESCRIPTOR_HANDLE heapStart = m_dsvHeap->GetNativeHeap()->GetCPUDescriptorHandleForHeapStart();
+    m_dsvHandle = heapStart;
+    
     m_device->GetD3D12Device()->CreateDepthStencilView(m_resource.Get(), &dsvDesc, m_dsvHandle);
-    EngineLog("CreateDSV: done");
+    EngineLog("CreateDSV: done, handle=%llu", (UINT64)m_dsvHandle.ptr);
 }
 
 void D3D12RenderTarget::CreateRTV() {
diff --git a/engine/src/RHI/D3D12/D3D12Resources.h b/engine/src/RHI/D3D12/D3D12Resources.h
index 88e1a7fb..3331560c 100644
--- a/engine/src/RHI/D3D12/D3D12Resources.h
+++ b/engine/src/RHI/D3D12/D3D12Resources.h
@@ -122,6 +122,8 @@ public:
     void* GetNativeResource() const override { return m_resource.Get(); }
     ID3D12Resource* GetNative() const { return m_resource.Get(); }
     
+    void SetDSVHeap(void* heap) override { m_dsvHeap = (D3D12DescriptorHeap*)heap; }
+    
     void CreateSRV() override {}
     void* GetSRV() override { return nullptr; }
     void CreateRTV() override {}
@@ -134,6 +136,7 @@ private:
     Microsoft::WRL::ComPtr<ID3D12Resource> m_resource;
     TextureDesc m_desc;
     D3D12_CPU_DESCRIPTOR_HANDLE m_dsvHandle = {};
+    D3D12DescriptorHeap* m_dsvHeap = nullptr;
 };
 
 class D3D12RenderTarget : public IRenderTarget {
diff --git a/engine/src/RHI/D3D12/D3D12StaticMeshComponent.cpp b/engine/src/RHI/D3D12/D3D12StaticMeshComponent.cpp
index 23e6707a..f17a26a5 100644
--- a/engine/src/RHI/D3D12/D3D12StaticMeshComponent.cpp
+++ b/engine/src/RHI/D3D12/D3D12StaticMeshComponent.cpp
@@ -70,24 +70,16 @@ bool StaticMeshComponent::Initialize(ICommandList* commandList, const char* file
 void StaticMeshComponent::Render(ICommandList* commandList) {
     if (!m_vertexBuffer) return;
     
-    printf("StaticMesh::Render - before SetVertexBuffer\n");
     commandList->SetVertexBuffer(0, m_vertexBuffer, 0, sizeof(MeshVertex));
-    printf("StaticMesh::Render - after SetVertexBuffer\n");
     
     if (m_subMeshes.empty()) {
-        printf("StaticMesh::Render - before DrawInstanced\n");
         commandList->DrawInstanced(m_vertexCount, 1, 0, 0);
-        printf("StaticMesh::Render - after DrawInstanced\n");
     }
     else {
         for (auto& pair : m_subMeshes) {
             SubMesh* submesh = pair.second;
-            printf("StaticMesh::Render - before SetIndexBuffer\n");
             commandList->SetIndexBuffer(submesh->indexBuffer, 0);
-            printf("StaticMesh::Render - after SetIndexBuffer\n");
-            printf("StaticMesh::Render - before DrawIndexedInstanced\n");
             commandList->DrawIndexedInstanced(submesh->indexCount, 1, 0, 0, 0);
-            printf("StaticMesh::Render - after DrawIndexedInstanced\n");
         }
     }
 }
diff --git a/run_debug_demo.bat b/run_debug_demo.bat
new file mode 100644
index 00000000..949b4179
--- /dev/null
+++ b/run_debug_demo.bat
@@ -0,0 +1,25 @@
+@echo off
+cd /d D:\Xuanchi\高斯泼溅\XCEngine
+echo Starting XCEngineDemo...
+echo Current directory: %CD%
+echo.
+echo Running Debug version...
+build\mvs\XCEngineDemo\Debug\XCEngineDemo.exe
+echo.
+echo Program exited with code: %ERRORLEVEL%
+echo.
+echo Checking log files...
+if exist D:\xcengine_debug.log (
+    echo === D:\xcengine_debug.log (first 100 lines) ===
+    type D:\xcengine_debug.log | more +1
+) else (
+    echo D:\xcengine_debug.log not found
+)
+echo.
+if exist D:\XCEngineDemo_main.log (
+    echo === D:\XCEngineDemo_main.log ===
+    type D:\XCEngineDemo_main.log
+) else (
+    echo D:\XCEngineDemo_main.log not found
+)
+pause
\ No newline at end of file
diff --git a/run_demo.bat b/run_demo.bat
index cb5e4ce6..19a0ce60 100644
--- a/run_demo.bat
+++ b/run_demo.bat
@@ -1,3 +1,16 @@
 @echo off
-cd /d D:\Xuanchi\高斯泼溅\XCEngine\build\mvs\XCEngineDemo\Debug
-XCEngineDemo.exe
+cd /d D:\Xuanchi\高斯泼溅\XCEngine
+echo Starting XCEngineDemo...
+echo Current directory: %CD%
+echo.
+build\mvs\XCEngineDemo\Debug\XCEngineDemo.exe
+echo.
+echo Program exited with code: %ERRORLEVEL%
+echo.
+if exist XCEngineDemo.log (
+    echo === Log file contents ===
+    type XCEngineDemo.log
+) else (
+    echo No log file found
+)
+pause
\ No newline at end of file
diff --git a/run_test.ps1 b/run_test.ps1
deleted file mode 100644
index 612d45ac..00000000
--- a/run_test.ps1
+++ /dev/null
@@ -1,5 +0,0 @@
-$proc = Start-Process -FilePath 'D:\Xuanchi\高斯泼溅\XCEngine\build\mvs\XCEngineDemo\Debug\XCEngineDemo.exe' -PassThru
-Start-Sleep -Seconds 5
-if (!$proc.HasExited) {
-    Stop-Process -Id $proc.Id -Force
-}