diff --git a/Source/Render/DCSurface.cpp b/Source/Render/DCSurface.cpp
index b17520ee..a490a2cf 100644
--- a/Source/Render/DCSurface.cpp
+++ b/Source/Render/DCSurface.cpp
@@ -10,6 +10,73 @@ std::shared_ptr<CSurface> AcquireBackBufferSurface(CRenderSystemBase* system) {
   return system ? system->BackBufferSurface() : std::shared_ptr<CSurface>{};
 }
 
+// FUNCTION: fn_02274
+CRenderer* RenderSystemHolder::CreateRenderer() {
+  return this->system ? this->system->CreateRenderer() : nullptr;
+}
+
+
+
+
+// FUNCTION: fn_02278
+HRESULT RenderSystemHolder::Close() {
+  return this->system ? this->system->Close() : static_cast<HRESULT>(0x8000000E);
+}
+
+
+// FUNCTION: fn_02280
+void RenderSystemHolder::UpdateOption() {
+  if (this->system) {
+    this->system->UpdateOption();
+  }
+}
+
+// FUNCTION: fn_02281
+void RenderSystemHolder::RestoreDisplayMode() {
+  if (this->system) {
+    this->system->RestoreDisplayMode();
+  }
+}
+
+// FUNCTION: fn_02282
+void RenderSystemHolder::PrepareErrorDialog() {
+  if (this->system) {
+    this->system->PrepareErrorDialog();
+  }
+}
+
+// FUNCTION: fn_02285
+std::int32_t RenderSystemHolder::Backend() const {
+  return this->system ? this->system->Backend() : -1;
+}
+
+
+// FUNCTION: fn_02287
+CTexture* RenderSystemHolder::BackBufferTexture() const {
+  return this->system ? this->system->BackBufferTexture() : nullptr;
+}
+
+// FUNCTION: fn_02288
+std::uint32_t RenderSystemHolder::Height() const {
+  return this->system ? this->system->Height() : 0;
+}
+
+// FUNCTION: fn_02292
+std::uint32_t RenderSystemHolder::Width() const {
+  return this->system ? this->system->Width() : 0;
+}
+
+// FUNCTION: fn_02294
+bool RenderSystemHolder::IsWindowed() const {
+  return this->system ? this->system->IsWindowed() : false;
+}
+
+// FUNCTION: fn_02295
+HRESULT RenderSystemHolder::TestDevice() const {
+  return this->system ? this->system->TestDevice() : static_cast<HRESULT>(0x8000000E);
+}
+
+
 // OFFSET: 0x00548FE0
 // FUNCTION: fn_01864
 CDCSurface::CDCSurface(std::shared_ptr<CSurface> surface) : m_surface(std::move(surface)) {
diff --git a/Source/Render/DCSurface.h b/Source/Render/DCSurface.h
index 9b30bb64..1e912b59 100644
--- a/Source/Render/DCSurface.h
+++ b/Source/Render/DCSurface.h
@@ -15,34 +15,27 @@ struct ScreenDimensions {
   int width;
 };
 
-inline ScreenDimensions DefaultResolution() {
-  return ScreenDimensions{768, 1024};
-}
+ScreenDimensions* DefaultResolution(ScreenDimensions* output);
 
 struct RenderSystemHolder {
-  CRenderSystemBase* system;
+  /* 0000 */ CRenderSystemBase* system;
 
-  std::int32_t Backend() const {
-    return this->system ? this->system->Backend() : -1;
-  }
-  CTexture* BackBufferTexture() const {
-    return this->system ? this->system->BackBufferTexture() : nullptr;
-  }
-  std::uint32_t Width() const {
-    return this->system ? this->system->Width() : 0;
-  }
-  std::uint32_t Height() const {
-    return this->system ? this->system->Height() : 0;
-  }
-  bool IsWindowed() const {
-    return this->system ? this->system->IsWindowed() : false;
-  }
-  HRESULT TestDevice() const {
-    return this->system ? this->system->TestDevice() : static_cast<HRESULT>(0x8000000E);
-  }
-  HRESULT Present(bool option) const {
-    return this->system ? this->system->Present(option) : static_cast<HRESULT>(0x8000000E);
-  }
+  CRenderer* CreateRenderer();
+  CSurface* CreateSurface(std::uint32_t width, std::uint32_t height);
+  CTexture* CreateTexture(std::uint32_t width, std::uint32_t height, std::int32_t format, bool dynamic, bool renderTarget);
+  CSurface* CreateSurfaceOrTexture(std::uint32_t width, std::uint32_t height);
+  HRESULT Close();
+  void DestroySurface(CSurface* surface);
+  void UpdateOption();
+  void RestoreDisplayMode();
+  void PrepareErrorDialog();
+  std::int32_t Backend() const;
+  CTexture* BackBufferTexture() const;
+  std::uint32_t Width() const;
+  std::uint32_t Height() const;
+  bool IsWindowed() const;
+  HRESULT TestDevice() const;
+  HRESULT Present(bool option) const;
 };
 
 __declspec(noinline) inline RenderSystemHolder* GetRenderSystemHolder() {