Русская версия

d3d9 wrapper for Lineage 2

A proxy d3d9.dll for Lineage 2 clients based on Unreal Engine 2 / Direct3D 9.
Drop into the system folder — no installer, no runtime dependencies.
Configuration via d3d9_proxy.ini, created automatically on first run.

Tested on The 1st Throne: The Kamael. Compatible with other chronicles on the same engine.

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Features

Anisotropic filtering x16 + LOD bias
Forces AF on all samplers and sharpens mipmaps. Noticeably cleaner textures at close range without any post-processing.

FPS limiter
Post-Present sleep with ~0.1ms precision. Does not spin the CPU.

Fog override
Mode 1: full override — color and distances from INI.
Mode 2: keep game fog color, override distances only.

Frame latency
Calls IDirect3DDevice9Ex::SetMaximumFrameLatency(1) to reduce GPU queue depth. Lower input lag.
On Wine + DXVK always works. On native Windows depends on driver — some AMD drivers accept the call but ignore it.

Hotkey
RightAlt toggles all enhancements on/off at runtime. Window title shows current state.

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Compatibility

Feature	Windows	Linux — Gallium Nine	Linux — DXVK
AF x16 + LOD bias	✅	✅	✅
FPS limiter	✅	✅	✅
Fog override	✅	✅	✅
Frame latency	⚠️ driver	✅	✅

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Installation

1. Copy d3d9.dll into the game's system folder (next to l2.exe)
2. Launch the game — d3d9_proxy.ini is created automatically
3. Edit the INI to configure, restart to apply

Compatible with ReShade when loaded via opengl32.dll (standard UE2 setup — no naming conflict).

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Screenshots

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Build

Linux (MinGW → Windows DLL)

i686-w64-mingw32-g++ -shared -o d3d9.dll d3d9_l2.cpp \
  -I/usr/i686-w64-mingw32/include \
  -ldxguid \
  -Wl,--enable-stdcall-fixup \
  -Wl,--add-stdcall-alias \
  -Wl,--kill-at \
  -static-libgcc \
  -static-libstdc++ \
  -std=c++17

Windows (MinGW)

i686-w64-mingw32-g++ -shared -o d3d9.dll d3d9_l2.cpp \
  -ldxguid \
  -Wl,--kill-at \
  -static-libgcc \
  -static-libstdc++ \
  -std=c++17

Windows (MSVC)

1. Create a new DLL project (x86 / Win32)
2. Add d3d9_l2.cpp
3. Linker → Input → Additional Dependencies: d3d9.lib, dxguid.lib
4. Build Release x86

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For developers

Full IDirect3D9 / IDirect3DDevice9 vtable wrapper. All methods delegate to the real device. No external dependencies beyond system d3d9.

Implemented:

• SetRenderState / SetSamplerState / Present / Reset interception
• IDirect3DDevice9Ex via QI on the live device — not a separate wrapper. On DXVK always succeeds regardless of CreateDevice type. On native Windows may return E_NOINTERFACE on older drivers; some AMD drivers accept but ignore. Both handled gracefully.
• Render state detector: fog params, lighting state, sampler count, flare candidates — dumps to log on exit or hotkey
• Depth texture creation (DF24 / DF16 / INTZ) probed at startup
• sampler_apply covers 8 samplers (detector recorded max 5 simultaneous in L2 Interlude)

Can be added on top:

• Draw call interception for geometry analysis
• Shader replacement via CreatePixelShader / CreateVertexShader
• HUD overlay via DrawPrimitiveUP in EndScene
• Depth buffer read (blocked on DXVK by design; works on Gallium Nine and native Windows)
• Frame timing stats, render target transition logging

Based on d3d9-depth-proxy. Key difference: IDirect3DDevice9Ex obtained via QI on the live device rather than a separate wrapper; sampler_apply covers 8 samplers instead of 16.