WebGL and Computer Graphics

2.

Introduction to WebGL

2.1.

WebGL Fundamentals

2.1.1.

Definition and Purpose

2.1.1.1.

Web-based Graphics API

2.1.1.2.

Hardware Acceleration

2.1.2.

WebGL Relationship to OpenGL

2.1.2.1.

OpenGL ES Foundation

2.1.2.2.

API Similarities

2.1.2.3.

Key Differences

2.1.3.

GPU Role in WebGL

2.1.3.1.

Hardware Acceleration Benefits

2.1.3.2.

Parallel Processing

2.1.3.3.

Browser Integration

2.1.4.

WebGL vs. Alternative Technologies

2.1.4.1.

2.1.4.1.1.

Capabilities and Limitations

2.1.4.1.2.

2.1.4.2.

2.1.4.2.1.

Vector vs. Raster

2.1.4.2.2.

Performance Considerations

2.1.4.3.

CSS 3D Transforms

2.1.4.3.1.

Limited 3D Capabilities

2.2.

Environment Setup

2.2.1.

HTML Canvas Element

2.2.1.1.

Canvas Creation

2.2.1.2.

Canvas Attributes

2.2.1.2.1.

Width and Height

2.2.1.2.2.

2.2.1.3.

Canvas Sizing Considerations

2.2.1.3.1.

Display Size vs. Drawing Buffer Size

2.2.1.3.2.

Device Pixel Ratio

2.2.2.

WebGL Context Creation

2.2.2.1.

Getting WebGL Context

2.2.2.1.1.

Context Type Selection

2.2.2.2.

Context Attributes

2.2.2.2.1.

2.2.2.2.2.

2.2.2.2.3.

2.2.2.2.4.

2.2.2.2.5.

Premultiplied Alpha

2.2.3.

Browser Support and Fallbacks

2.2.3.1.

Feature Detection

2.2.3.1.1.

Context Availability Check

2.2.3.2.

2.2.3.2.1.

Context Creation Failures

2.2.3.3.

Fallback Strategies

2.2.3.3.1.

Alternative Rendering Methods

2.3.

First WebGL Program

2.3.1.

Canvas Preparation

2.3.1.1.

Clearing the Canvas

2.3.1.2.

Clear Color Setting

2.3.1.3.

Buffer Clearing

2.3.1.3.1.

2.3.1.3.2.

2.3.2.

Basic Geometry Definition

2.3.2.1.

Vertex Data Arrays

2.3.2.1.1.

2.3.2.1.2.

Data Organization

2.3.2.2.

Buffer Creation and Management

2.3.2.2.1.

Buffer Object Creation

2.3.2.2.2.

2.3.3.

Shader Creation

2.3.3.1.

Vertex Shader Source

2.3.3.1.1.

Basic Vertex Processing

2.3.3.2.

Fragment Shader Source

2.3.3.2.1.

Basic Color Output

2.3.3.3.

Shader Compilation Process

2.3.3.3.1.

Source Code Compilation

2.3.3.3.2.

2.3.4.

Shader Program Setup

2.3.4.1.

Program Object Creation

2.3.4.2.

Shader Attachment

2.3.4.3.

Program Linking

2.3.4.4.

2.3.5.

2.3.5.1.

Animation Frame Requests

2.3.5.2.

2.3.5.3.

Redraw Operations

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3. WebGL Rendering Pipeline