Add DX9 conversion summary report
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DX9_CONVERSION_SUMMARY.md
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DX9_CONVERSION_SUMMARY.md
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# DirectX 9 Conversion Summary
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## Conversion Status: Phase 1 Complete ✅
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### Date: 2025-11-30
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### Branch: dx9
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### Commit: 97264e3
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---
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## What Was Done
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### 1. Automated Conversions (✅ Complete)
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#### Header Files
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- **Changed**: `#include <d3d8.h>` → `#include <d3d9.h>`
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- **Changed**: `#include <d3dx8.h>` → `#include <d3dx9.h>`
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- **Files affected**: 64 header includes updated
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#### Interface Types (1,002+ references)
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- `LPDIRECT3D8` → `LPDIRECT3D9` (8 references)
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- `LPDIRECT3DDEVICE8` → `LPDIRECT3DDEVICE9` (929 references)
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- `IDirect3DTexture8` → `IDirect3DTexture9`
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- `IDirect3DSurface8` → `IDirect3DSurface9`
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- `IDirect3DVertexBuffer8` → `IDirect3DVertexBuffer9`
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- `IDirect3DIndexBuffer8` → `IDirect3DIndexBuffer9`
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- `IDirect3DCubeTexture8` → `IDirect3DCubeTexture9`
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- `IDirect3DVolumeTexture8` → `IDirect3DVolumeTexture9`
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#### Structures
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- `D3DCAPS8` → `D3DCAPS9`
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- `D3DADAPTER_IDENTIFIER8` → `D3DADAPTER_IDENTIFIER9`
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#### API Functions
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- `Direct3DCreate8()` → `Direct3DCreate9()`
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#### Project Files
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- **All .vcxproj files**: Library links updated
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- **All .vcproj files**: Library links updated
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- `d3d8.lib` → `d3d9.lib`
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- `d3dx8.lib` → `d3dx9.lib`
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- `d3dx8dt.lib` → `d3dx9d.lib`
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- `dxerr8.lib` → `dxerr.lib`
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### 2. Manual Fixes (✅ Complete)
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#### d3dfont.h & d3dfont.cpp - Font System
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**StateBlock API Changes**:
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```cpp
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// Before (DX8)
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DWORD m_dwSavedStateBlock;
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DWORD m_dwDrawTextStateBlock;
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m_pd3dDevice->BeginStateBlock();
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// ... set states ...
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m_pd3dDevice->EndStateBlock(&m_dwSavedStateBlock);
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m_pd3dDevice->CaptureStateBlock(m_dwSavedStateBlock);
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m_pd3dDevice->ApplyStateBlock(m_dwSavedStateBlock);
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m_pd3dDevice->DeleteStateBlock(m_dwSavedStateBlock);
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// After (DX9)
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IDirect3DStateBlock9* m_pSavedStateBlock;
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IDirect3DStateBlock9* m_pDrawTextStateBlock;
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m_pd3dDevice->BeginStateBlock();
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// ... set states ...
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m_pd3dDevice->EndStateBlock(&m_pSavedStateBlock);
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m_pSavedStateBlock->Capture();
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m_pSavedStateBlock->Apply();
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m_pSavedStateBlock->Release();
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```
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**Render State Changes**:
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- `D3DRS_EDGEANTIALIAS` → `D3DRS_ANTIALIASEDLINEENABLE`
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- `D3DRS_VERTEXBLEND` value: `FALSE` → `D3DVBF_DISABLE`
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**Sampler State Migration**:
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```cpp
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// Before (DX8)
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SetTextureStageState(0, D3DTSS_MINFILTER, D3DTEXF_POINT);
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SetTextureStageState(0, D3DTSS_MAGFILTER, D3DTEXF_POINT);
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SetTextureStageState(0, D3DTSS_MIPFILTER, D3DTEXF_NONE);
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// After (DX9)
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SetSamplerState(0, D3DSAMP_MINFILTER, D3DTEXF_POINT);
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SetSamplerState(0, D3DSAMP_MAGFILTER, D3DTEXF_POINT);
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SetSamplerState(0, D3DSAMP_MIPFILTER, D3DTEXF_NONE);
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```
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---
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## Statistics
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- **Total files modified**: 457 files
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- **Insertions**: 1,608 lines
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- **Deletions**: 1,260 lines
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- **Net change**: +348 lines
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### Affected Components
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1. **Engine Core (Zalla3D Base Class)**: ✅
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- BaseGraphicsLayer.h/cpp
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- RenderDevice.h/cpp
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- EnumD3D.h/cpp
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- Texture.h/cpp
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- NTexture.h/cpp
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- d3dfont.h/cpp
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- VertexBuffer.h/cpp
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- RenderTargetTexture.h/cpp
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- etc.
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2. **Engine Rendering (Zalla3D Scene Class)**: ✅
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- Z3DRenderable.h/cpp
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- Z3DTexture.h/cpp
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- Z3DGeneralChrModel.h/cpp
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- NMesh.h/cpp
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- OctreeScene.h/cpp
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- WaterW.h/cpp
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- etc.
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3. **Effect System**: ✅
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- CGemRender.h/cpp
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- EffMeshloader.h/cpp
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- SMRHeader.h/cpp
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- etc.
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4. **Client UI**: ✅
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- Sprite.h
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- RYLSpriteEX.h
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- GUITextEdit.h
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- GUITooltip.h
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- etc.
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5. **Character Control**: ✅
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- CameraControl.h
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- CCameraScript.h
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- RYLObjectControl.h/cpp
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- etc.
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---
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## Known Issues & Warnings
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### ⚠️ Requires DX9 Runtime
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The converted code requires DirectX 9 runtime to be installed:
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- **DLLs needed**: `d3d9.dll`, `d3dx9_43.dll` (or equivalent version)
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- **Libraries needed**: `d3d9.lib`, `d3dx9.lib`
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### ⚠️ Not Yet Tested
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- **Compilation**: Not yet attempted
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- **Runtime**: Not yet tested
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- **Rendering correctness**: Not verified
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### 🔍 Areas Needing Attention
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1. **Shader Code**: Check vertex/pixel shader versions
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2. **Texture Formats**: Some formats might behave differently
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3. **Present Parameters**: Verify all D3DPRESENT_PARAMETERS fields
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4. **Lock Flags**: `D3DLOCK_NOSYSLOCK` was removed in DX9
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5. **Query System**: New query interfaces in DX9
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---
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## Next Steps
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### Phase 2: Build & Fix Compilation Errors
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1. ⏳ Set up DX9 SDK paths
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2. ⏳ Attempt build
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3. ⏳ Fix compilation errors
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4. ⏳ Fix linker errors
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### Phase 3: Runtime Testing
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1. ⏳ Test device creation
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2. ⏳ Test texture loading
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3. ⏳ Test rendering pipeline
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4. ⏳ Test UI rendering
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5. ⏳ Test effects system
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6. ⏳ Full game test
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### Phase 4: Performance & Optimization
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1. ⏳ Performance profiling
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2. ⏳ Compare with DX8 baseline
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3. ⏳ Optimize if needed
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4. ⏳ Visual verification
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### Phase 5: Documentation & Merge
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1. ⏳ Update build documentation
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2. ⏳ Update deployment guide
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3. ⏳ Code review
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4. ⏳ Merge to master
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---
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## Rollback Plan
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If issues are encountered:
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```bash
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git checkout master # Return to DX8 version
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```
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The original DX8 code is preserved in the `master` branch.
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---
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## Technical Notes
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### DX8 vs DX9 Key Differences Applied
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1. **StateBlock Management**:
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- DX8 used DWORD handles
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- DX9 uses COM interface pointers
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2. **Sampler States**:
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- DX8: Part of texture stage states
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- DX9: Separate sampler states
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3. **Render States**:
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- Some renamed or value changes
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- `D3DRS_EDGEANTIALIAS` → `D3DRS_ANTIALIASEDLINEENABLE`
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4. **Shader Support**:
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- DX8: Up to VS 1.1, PS 1.4
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- DX9: Up to VS 3.0, PS 3.0 (depending on hardware)
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### Files NOT Modified
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- `/Client/Library/dxx8/*` - DX8 SDK samples preserved as reference
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- Documentation files
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- Resource files
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- Build scripts
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---
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## Credits
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**Conversion executed by**: Claude AI (Anthropic)
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**Date**: November 30, 2025
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**Method**: Automated sed scripts + manual StateBlock fixes
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**Testing status**: Pending
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---
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## References
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- [DirectX 9 SDK Documentation](https://docs.microsoft.com/en-us/windows/win32/direct3d9)
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- [DX8 to DX9 Migration Guide](https://docs.microsoft.com/en-us/windows/win32/direct3d9/converting-to-directx-9)
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- Migration Plan: `DX8_TO_DX9_MIGRATION_PLAN.md`
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