GLRenderer

• Build it by MSVC with C++20.
• Refer to LearOpenGL, Godot, Unity and So on.

NameFormat

• file name(xxXxx)
• class name(XxXxx)
• class member var name(mXxx)
• struct name(XxXxx)
• struct member var name(--xxXxx--)
• all funcs name(XxXxx)
• temporary var or func var(xxXxx)
• cpu to gpu data var name keep same

Architecture Design

Disclaimer: 👶小孩子不懂事做着玩的😋.

Core Features

• ✅ Window
  • GLFW window wrapper
  • Input event handling
• ✅ Camera
  • Roaming camera with mouse/keyboard
  • Perspective projection & orthographic projection
• ✅ Mesh
  • Holds geometry data and GPU resources (VAO/VBO/EBO)
  • Primitive factory functions can generate cube/sphere/plane for testing
• ✅ Transform
  • Holds position, rotation, scale(only for itself)
• ✅ Material
  • Manages shader/texture/uniform concepts
• ✅ Light
  • Directional Light
  • Point Light
  • Spot Light
• ✅ Entity
  • A renderable unit: binds Mesh + Material + Transform
  • one parent(index), multiple children
• ✅ Model
  • Holds a container of Entity
• ✅ Scene
  • Holds Entity list, Model list, Light list
  • Maintain parent-child relationship and logic
• ✅ Renderer
  • Stateless service entry
  • Renderer Pass & Renderer Graph Architecture
  • Interface: Render(const Scene&, const Camera&)
• ✅ Assimp Model Loader
• ✅ Shadow Mapping
• ✅ PBR + IBL
• ✅ Post Process

Module Graph

graph TD
    Mesh["Mesh"]
    Transform["Transform"]
    Material["Material"]
    Entity["Entity<br/>mesh + material + transform"]
    Model["Model<br/>vector<Entity>"]
    Light["Light"]
    Scene["Scene<br/>entities + models + lights"]
    Camera["Camera"]
    Renderer["Renderer"]

    Mesh --> Entity
    Material --> Entity
    Transform --> Entity
    Entity --> Model
    Entity --> Scene
    Model --> Scene
    Light --> Scene
    Scene --> Renderer
    Camera --> Renderer

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Per-frame Render Flow

flowchart LR
    A["App Loop"] --> B["Build Frame Context"]
    B --> C["Collect from Scene<br/>Entities + Models + Lights"]
    C --> D["Render State"]
    D --> E["Submit Draw Calls"]
    E --> F["Present"]

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Gallery