View System

If RedGPUContext—learned previously—is the 'environment' where the engine runs, the View System is the 'frame' that determines how actual content will be displayed within that environment.

RedGPU's View System is the core architecture of the engine and performs the following roles:

• Scene Composition: Defining the hierarchical placement of objects and lights within 3D space.
• Pipeline Control: Managing the rendering process and data flow.
• Screen Output: Displaying the final results on the browser screen.

Core Components

The four core modules that make up RedGPU's rendering pipeline are as follows. Each module performs an independent role and is organically combined.

Component	Class Name	Role and Function
View3D	RedGPU.Display.View3D	Specifies the screen output area (Viewport/Scissor), applies skyboxes and post-effects, and manages debugging tools.
Scene	RedGPU.Display.Scene	Manages the hierarchical structure of objects to be rendered, as well as lighting data and the scene background color.
Camera	RedGPU.Camera.*	Calculates the projection and view matrices that convert 3D space to a 2D screen, and provides frustum information.
Controller	RedGPU.Camera.*Controller	Detects mouse, touch, and keyboard input, and updates the camera transform in real-time.

Understanding Relationships

Before learning more, it's important to understand how these elements are connected to each other.

1. RedGPUContext has one or more View3D instances (e.g., a game screen and a minimap).
2. Each View3D links what to show (Scene) and where to see it from (Camera).
3. A Controller receives user input and moves the Camera.

Thanks to this structure, a single Scene can be observed from different angles simultaneously through multiple windows (View3D).

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Learning Roadmap

It is recommended to learn the detailed usage and configuration methods of each module in the following order:

1. View3D: The basic unit of screen rendering and layout configuration methods.
2. Scene: The container for composing the stage and managing lighting.
3. Camera: Understanding viewpoints that convert 3D coordinates to screen coordinates.
4. Controller: Interactive camera manipulation through mouse and touch.