DirectX Engine

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DirectX Engine

By xiaozi_Graphics_Development_Team

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Use DirectX12 to Play !

Mod Loaders
Minecraft
26.2
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About

Description

DirectX Engine

D3D12 Rendering Backend

Replaces OpenGL/Vulkan with a native C++ D3D12 rendering backend by implementing Mojang's official GpuBackend / GpuDeviceBackend interface. Zero custom render loops — fully takes over the official Minecraft rendering pipeline.

Features

  • Full render pipeline takeover：Mixin-based API selection override, no RenderSystem rewrite, relies on Minecraft's official rendering engine
  • Complete shader compilation chain：GLSL → SPIR-V (shaderc) → HLSL SM5.1 (spvc) → DXBC (D3DCompile)，supports all official shaders
  • 4-stage self-test：Resource creation / command submission / pipeline compilation / swapchain verification — auto-fallback to OpenGL on any failure
  • Async rendering infrastructure：Per-worker mirror descriptor heaps + Bundle recording + Fence event-driven sync (ASYNC-01/03/04/05 fixed)
  • AA mode selection：None / FXAA / SMAA / TAA, settings persisted to config/gl4dx12.properties

What's Fixed

Issue Status
done World rendering black screen level=null root cause identified and fixed, terrain/chunks/entities now render
done NDC Y-flip GUI atlas and character rendering inverted — fixed
done Lightmap V-flip Daytime terrain brightness issue fixed
done CS_OWNDC window compatibility Swapchain creation failure on certain Windows window classes fixed
done Descriptor misalignment SRV written to currently active heap (cross-frame residue causing black screen)
done Depth testing Reverse-Z comparison function fixed + pre-clear removed

System Requirements

  • OS：Windows 10 (1809+) / Windows 11
  • GPU：DirectX 12 Feature Level 11_0 or above (DX12 recommended)
  • RAM：8 GB+ recommended
  • Java：JDK 26 (build) / Java 21+ (runtime)
  • Storage：~50 MB (including prebuilt DLL)

Environment Variables (Debug)

Variable Description
DX12_LOG_VERBOSE=1 Enable verbose logging, also writes to %TEMP%\dx12-native.log
DX12_DIAG_GREEN=1 Green-shader diagnostic (verify pipeline compilation)
DX12_DBG_DISABLE_DEPTH=1 Force-disable depth testing (debug depth config issues)

Known Limitations

  • Windows only (D3D12 platform restriction)
  • Async rendering Java layer still in development (C++ infrastructure complete)
  • No external contributions accepted at this time (in-development project)

License

MIT License

Credit: 爱睡觉的白洲梓 / xiaozi Graphics Development Team