Real-Time Global Illumination Renderer Based on Direct3D 12 (基于 Direct3D 12 的实时全局光照渲染器)

Goals

Develop a real-time global illumination rendering engine capable of computing indirect lighting in dynamic scenes. 开发一个实时全局光照渲染引擎，支持动态场景中的间接光照计算。

Key Features

• Implement the core rendering pipeline using Direct3D 12. 使用 Direct3D 12 编写核心渲染管线。
• Write HLSL shaders to achieve Screen Space Reflections (SSR) and Screen Space Global Illumination (SSGI). 编写 HLSL 着色器实现屏幕空间反射 (SSR) 和屏幕空间全局光照 (SSGI)。
• Support shadow mapping for light sources and dynamic reflections. 支持光源阴影映射和动态反射。
• Use multithreading to handle scene geometry frustum culling and lighting calculations. 使用多线程处理场景几何体剔除（Frustum Culling）和光照计算。

Project Setup and Environment

• Build System and Compiler Information
  • Build System Generator: CMake
  • Build System: MSBuild
  • Compiler: MSVC (Microsoft Visual C++)
  • Integrated Development Environment (IDE): Visual Studio 2022
• Libraries
  • Graphics and Rendering: DirectX 12
  • Windows Platform Interface: Windows API
  • COM Programming: Microsoft WRL (Windows Runtime C++ Template Library)
  • Model Loading: tinyobjloader
• Development and Debugging Tools
  • Package Manager: vcpkg
  • Version Control: Git
  • Debugging: PIX

Project Roadmap

Phase 1: Project Foundation and Setup

Objective: Set up the development environment and understand Direct3D 12 basics.
Tasks:

• ✅ Install Visual Studio 2022 and Windows SDK.
• ✅ Learn Direct3D 12 pipeline: Root Signature, Command List, Descriptor Heap.
• ✅ Initialize project: Render a simple triangle.

Result: Direct3D 12 Triangle Rendering

Timeframe: 2024-11-15 to 2024-11-29

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Phase 2: Basic Rendering Engine

Objective: Implement the rendering pipeline and basic lighting with shadows.

Tasks:

• ✅ Implement Root Signature and PSO.
• ✅ Add camera movement.
• ✅ Load simple models.
• Implement dynamic lighting and shadow mapping.

Timeframe: 2024-11-30 to 2024-12-14

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Phase 3: Screen-Space Effects

Objective: Add screen-space global illumination (SSGI) and reflections (SSR).

Tasks:

• Implement SSGI for indirect lighting.
• Add SSR using depth buffer ray tracing.
• Optimize post-processing performance.

Timeframe: 2024-12-15 to 2024-12-29

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Phase 4: Multithreading and Culling

Objective: Optimize rendering performance with multithreading and culling.

Tasks:

• Use command lists for parallel rendering.
• Implement frustum culling.
• Optimize memory usage and resource management.

Timeframe: 2024-12-30 to 2024-01-13

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Phase 5: Advanced Features

Objective: Enhance visual quality with PBR materials and volumetric lighting.

Tasks:

• Add PBR materials with metalness and roughness.
• Implement volumetric lighting for atmospheric effects.
• Create a demo showcasing all features.

Timeframe: 2024-01-14 to 2024-01-28