Graphics_Rendering.md

Graphics and Rendering Notes

This document summarizes graphics and rendering techniques used in Bridge.

Texture Sharing

Bridge implements efficient texture sharing between JavaScript/browser contexts and Unity:

Zero-Copy Techniques

Zero-copy approaches avoid unnecessary data copying between processes:

• WebAssembly shared memory
• IOSurface on macOS/iOS
• SurfaceTexture on Android
• WebGL texture binding

Key files:

• ZeroCopy.txt - Zero-copy implementation techniques
• IOSurface.txt - macOS/iOS texture sharing
• SurfaceTexture.txt - Android texture sharing

OpenGL Integration

Bridge leverages OpenGL for cross-platform graphics:

• Texture binding between browser and Unity
• Custom shaders for rendering web content
• WebGL integration

Key files:

• GL.txt - OpenGL integration notes
• OSXOpenGL.txt - macOS-specific OpenGL details

Shader Development

Bridge includes custom shaders for various rendering needs:

• Skybox shaders for panoramic content
• Material conversion between JavaScript and Unity
• Custom effects for VR/AR

Key files:

• SkyboxShaders.txt - Skybox implementation details

Platform-Specific Graphics

macOS/iOS Graphics

• Metal integration
• IOSurface for texture sharing
• WKWebView rendering capture

Android Graphics

• OpenGL ES integration
• SurfaceTexture
• Hardware acceleration considerations

Windows Graphics

• DirectX integration
• Spout for texture sharing

Key files:

• Syphon.txt - macOS texture sharing framework
• Windows.txt - Windows graphics integration details

Unity Graphics Integration

Bridge extends Unity's graphics capabilities:

• Texture2D creation and updates from JavaScript
• Canvas rendering to Unity textures
• WebGL integration

Key files:

• unity-plugin-graphics.txt - Unity graphics integration techniques