diff --git a/engine/CMakeLists.txt b/engine/CMakeLists.txt
index 18b44bc7..525431b6 100644
--- a/engine/CMakeLists.txt
+++ b/engine/CMakeLists.txt
@@ -456,6 +456,8 @@ add_library(XCEngine STATIC
     ${CMAKE_CURRENT_SOURCE_DIR}/include/XCEngine/Rendering/Pipelines/BuiltinForwardPipeline.h
     ${CMAKE_CURRENT_SOURCE_DIR}/src/Rendering/CameraRenderer.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/src/Rendering/Passes/BuiltinDepthStylePassBase.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/Rendering/Passes/BuiltinDepthOnlyPass.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/src/Rendering/Passes/BuiltinShadowCasterPass.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/src/Rendering/Passes/BuiltinObjectIdPass.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/src/Rendering/Passes/BuiltinInfiniteGridPass.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/src/Rendering/Passes/BuiltinObjectIdOutlinePass.cpp
diff --git a/engine/src/Rendering/Passes/BuiltinDepthOnlyPass.cpp b/engine/src/Rendering/Passes/BuiltinDepthOnlyPass.cpp
new file mode 100644
index 00000000..557a23c8
--- /dev/null
+++ b/engine/src/Rendering/Passes/BuiltinDepthOnlyPass.cpp
@@ -0,0 +1,25 @@
+#include "Rendering/Passes/BuiltinDepthOnlyPass.h"
+
+#include "Resources/BuiltinResources.h"
+
+namespace XCEngine {
+namespace Rendering {
+namespace Passes {
+
+BuiltinDepthOnlyPass::BuiltinDepthOnlyPass()
+    : BuiltinDepthStylePassBase(
+        BuiltinMaterialPass::DepthOnly,
+        Resources::GetBuiltinDepthOnlyShaderPath()) {
+}
+
+RHI::InputLayoutDesc BuiltinDepthOnlyPass::BuildInputLayout() {
+    return BuildCommonInputLayout();
+}
+
+const char* BuiltinDepthOnlyPass::GetName() const {
+    return "BuiltinDepthOnlyPass";
+}
+
+} // namespace Passes
+} // namespace Rendering
+} // namespace XCEngine
diff --git a/engine/src/Rendering/Passes/BuiltinDepthStylePassBase.cpp b/engine/src/Rendering/Passes/BuiltinDepthStylePassBase.cpp
index 38cd3879..670060b8 100644
--- a/engine/src/Rendering/Passes/BuiltinDepthStylePassBase.cpp
+++ b/engine/src/Rendering/Passes/BuiltinDepthStylePassBase.cpp
@@ -1,16 +1,11 @@
 #include "Rendering/Passes/BuiltinDepthStylePassBase.h"
-#include "Rendering/Passes/BuiltinDepthOnlyPass.h"
-#include "Rendering/Passes/BuiltinShadowCasterPass.h"
-
 #include "Components/GameObject.h"
-#include "Components/MeshRendererComponent.h"
 #include "Core/Asset/ResourceManager.h"
 #include "Debug/Logger.h"
 #include "RHI/RHICommandList.h"
 #include "Rendering/Detail/ShaderVariantUtils.h"
 #include "Rendering/RenderSceneExtractor.h"
 #include "Rendering/RenderSurface.h"
-#include "Resources/BuiltinResources.h"
 #include "Resources/Material/Material.h"
 #include "Resources/Mesh/Mesh.h"
 
@@ -716,38 +711,6 @@ bool BuiltinDepthStylePassBase::DrawVisibleItem(
     return true;
 }
 
-BuiltinDepthOnlyPass::BuiltinDepthOnlyPass()
-    : BuiltinDepthStylePassBase(
-        BuiltinMaterialPass::DepthOnly,
-        Resources::GetBuiltinDepthOnlyShaderPath()) {
-}
-
-RHI::InputLayoutDesc BuiltinDepthOnlyPass::BuildInputLayout() {
-    return BuildCommonInputLayout();
-}
-
-const char* BuiltinDepthOnlyPass::GetName() const {
-    return "BuiltinDepthOnlyPass";
-}
-
-BuiltinShadowCasterPass::BuiltinShadowCasterPass()
-    : BuiltinDepthStylePassBase(
-        BuiltinMaterialPass::ShadowCaster,
-        Resources::GetBuiltinShadowCasterShaderPath()) {
-}
-
-RHI::InputLayoutDesc BuiltinShadowCasterPass::BuildInputLayout() {
-    return BuildCommonInputLayout();
-}
-
-const char* BuiltinShadowCasterPass::GetName() const {
-    return "BuiltinShadowCasterPass";
-}
-
-bool BuiltinShadowCasterPass::ShouldRenderVisibleItem(const VisibleRenderItem& visibleItem) const {
-    return visibleItem.meshRenderer == nullptr || visibleItem.meshRenderer->GetCastShadows();
-}
-
 } // namespace Passes
 } // namespace Rendering
 } // namespace XCEngine
diff --git a/engine/src/Rendering/Passes/BuiltinShadowCasterPass.cpp b/engine/src/Rendering/Passes/BuiltinShadowCasterPass.cpp
new file mode 100644
index 00000000..26178752
--- /dev/null
+++ b/engine/src/Rendering/Passes/BuiltinShadowCasterPass.cpp
@@ -0,0 +1,30 @@
+#include "Rendering/Passes/BuiltinShadowCasterPass.h"
+
+#include "Components/MeshRendererComponent.h"
+#include "Resources/BuiltinResources.h"
+
+namespace XCEngine {
+namespace Rendering {
+namespace Passes {
+
+BuiltinShadowCasterPass::BuiltinShadowCasterPass()
+    : BuiltinDepthStylePassBase(
+        BuiltinMaterialPass::ShadowCaster,
+        Resources::GetBuiltinShadowCasterShaderPath()) {
+}
+
+RHI::InputLayoutDesc BuiltinShadowCasterPass::BuildInputLayout() {
+    return BuildCommonInputLayout();
+}
+
+const char* BuiltinShadowCasterPass::GetName() const {
+    return "BuiltinShadowCasterPass";
+}
+
+bool BuiltinShadowCasterPass::ShouldRenderVisibleItem(const VisibleRenderItem& visibleItem) const {
+    return visibleItem.meshRenderer == nullptr || visibleItem.meshRenderer->GetCastShadows();
+}
+
+} // namespace Passes
+} // namespace Rendering
+} // namespace XCEngine