``` 3D Models in WebGL

3D Models in WebGL

Learn to load, render, and animate 3D models using modern WebGL2 techniques.

� Interactive Demo

What You'll Learn

Model Loading

  • • glTF format parsing
  • • Geometry buffer creation
  • • Texture mapping concepts

Rendering Pipeline

  • • Vertex/fragment shader setup
  • • Transform matrice management
  • • Lighting and material configurations

Animation

  • • Skeletal animation systems
  • • Morph target interpolation
  • • Real-time physics simulation

3D Model Renderer Demo

Code Example: Model Rendering

Initialization

// Set up WebGL context
const canvas = document.getElementById('model-canvas');
const gl = canvas.getContext('webgl2');

// Create shader programs
const vertexShader = ...;
const fragmentShader = ...;

Rendering

function drawModel() {
    gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
    // Draw model
    gl.drawElements(gl.TRIANGLES, indexCount, gl.UNSISGED_BYTE, 0);
}

Model Loading Concepts

glTF Pipeline

  1. 1 Determine model file format
  2. 2 Parse glTF/Binary buffers
  3. 3 Create WebGL buffers for vertices/indexes
  4. 4 Upload textures and materials
  5. 5 Initialize animation controllers

Tip: Use glTF 2.0 as it is the most widely supported 3D format.

Advanced Techniques

Optimized Rendering

  • • Instanced rendering for large model instances
  • • Texture atlas optimization
  • • Level of Detail (LOD) strategies

Animation Systems

  • • Skeletal animation with joint matrices
  • • Morph target interpolation
  • • Animation blending techniques
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