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Compare D3D8 API calls between original game EXE and reimplementation under Wine
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Reverse engineer and recreate the Hamsterball game (2000s Windows game by Raptisoft)
Start GhidraMCP headless server with the Hamsterball.exe project — always do this before any RE work
Restore all function renames from FUNCTION_MAP.md back into a fresh Ghidra project after DB loss or re-import
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Basierend auf der SOC-Berufsklassifikation
| name | wine-api-comparison-test |
| description | Compare D3D8 API calls between original game EXE and reimplementation under Wine |
| tags | ["wine","d3d8","testing","comparison","hamsterball"] |
Run both the original Hamsterball EXE and our reimplementation under Wine with API tracing to compare D3D8/DInput/DSound call sequences. This validates that our reimplementation makes the same WinAPI calls as the original game.
originals/installed/extracted/Hamsterball.exereimpl/hamsterball.exescripts/test_api_compare.sh# Start Xvfb
Xvfb :99 -screen 0 1024x768x24 -ac &
sleep 2
# Run comparison script (5 seconds each)
DISPLAY=:99 ./scripts/test_api_compare.sh :99
cd ~/hamsterball-re/originals/installed/extracted
DISPLAY=:99 WINEDEBUG=+d3d8,+dinput wine Hamsterball.exe 2>&1 | tee /tmp/orig_trace.log
# Game will show D3DERR_NOTAVAILABLE on Xvfb (needs real GPU)
cd ~/hamsterball-re/reimpl
DISPLAY=:99 wine ./hamsterball.exe 2>&1 | tee /tmp/reimpl_trace.log
# Works on Xvfb: D3D8 device creates, level loads, clear screen renders
# D3D8 calls only
grep -i "trace:d3d8" /tmp/trace.log | head -100
# Focus on CreateDevice params
grep -i "CreateDevice" /tmp/trace.log
# Count render state changes
grep -c "SetRenderState" /tmp/trace.log
| Aspect | Original | Reimpl |
|---|---|---|
| CreateDevice | D3DCREATE_HARDWARE_VERTEXPROCESSING | Falls back to SOFTWARE_VERTEXPROCESSING |
| Window | Fullscreen 800x600 (original) | Windowed 1024x768 (our default) |
| Audio | BASS.dll for music, DirectSound for SFX | DirectSound stubbed (non-fatal) |
| Geometry | MESHWORLD vertex buffer rendering (SpawnPlatform 34v) | Placeholder sphere + colored cubes |
| Textures | D3DXCreateTextureFromFile (PNG/TGA) | No texture loading yet |
| Scene System | 8-pass render pipeline | Single-pass clear + ball + objects |
| Input | DInput8 + BASS for polling | DInput8 keyboard + mouse polling |
Screenshots are stored in analysis/screenshots/comparison/:
original_fullscreen.png — D3DERR_NOTAVAILABLE error dialog on Xvfbreimpl.png — Clear color screen (purple-gray) with no geometryFor testing with real GPU rendering (original game works):