erik d1442e3747 Initial commit: Complete open-source Decal rebuild

All 5 phases of the open-source Decal rebuild:

Phase 1: 14 decompiled .NET projects (Interop.*, Adapter, FileService, DecalUtil)
Phase 2: 10 native DLLs rewritten as C# COM servers with matching GUIDs
  - DecalDat, DHS, SpellFilter, DecalInput, DecalNet, DecalFilters
  - Decal.Core, DecalControls, DecalRender, D3DService
Phase 3: C++ shims for Inject.DLL (D3D9 hooking) and LauncherHook.DLL
Phase 4: DenAgent WinForms tray application
Phase 5: WiX installer and build script

25 C# projects building with 0 errors.
Native C++ projects require VS 2022 + Windows SDK (x86).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

2026-02-08 18:27:56 +01:00

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DecalRender.DLL

Origin

Factored out of the old Inject.DLL — the rendering functionality (texture creation, font rendering, surface blitting) that previously lived inside Inject was moved into this dedicated COM server.

Binary Facts

Size: 108 KB
Type: COM in-process server (DLL)
Standard 4 COM exports: DllCanUnloadNow, DllGetClassObject, DllRegisterServer, DllUnregisterServer

Key Imports

DLL	Functions
Inject.DLL	`BeginSceneO`, `EndSceneO`
d3dx9_30.dll	`D3DXCreateTexture`, `D3DXLoadSurfaceFromMemory`, `D3DXCreateFontW`, and others

What It Does

Provides the 2D rendering layer for Decal's overlay UI — creating textures, loading surfaces from memory, and drawing text with DirectX fonts. Inject.DLL hooks the Direct3D scene begin/end, and DecalRender plugs into those hooks to draw.

Reconstruction Notes

LOOK AT: Managed/Decal.Interop.Render/ for the COM interface definitions this DLL must implement. That directory contains 19 decompiled C# files describing every interface, enum, and coclass.
LOOK AT: The old Native/Inject/ source for rendering code that was likely moved here. Search for anything that touches IDirect3DTexture9, ID3DXFont, surface blitting, etc.
The interop assembly will define the exact vtable layout the managed side expects. Every COM interface in Decal.Interop.Render maps to an interface this DLL exposes.

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