Shading Languages Languages Programming

Articles on OpenGL Shaders: specifications, tutorials, sample code, and comparisons.

• GPU Shading - GLSL and ARB examples of texture mapping and lighting; includes code examples and screen shots. [PDF]
  
• Hardware-Based Nonlinear Filtering and Segmentation - Whitepaper on using high-level shading languages to provide non-linear image filtering. Includes an abstract, diagrams and metacode. [PDF]
  
• Shading Languages - Powerpoint presentation on 3D shading languages. Includes coding comparisons and pros/cons of various shading languages.
  
• Shader Theory - A tutorial on the basics of shading theory in 3D computer graphics.
  
• GLSL vs Cg - Compares the APIs, workflow and variable types between GLSL and Cg.
  
• Shading Languages for Graphics Hardware - Language-independent overview of 3D shading language pipelines. Describes application to GPU architectures. [PDF]
  
• OpenGL Shader Designer - A freeware shader development IDE for Windows; aids in developing vertex and fragment (pixel) shaders in GLSL. Includes tools, tutorials, and sample Space Invaders app (requires VC++ 4).
  
• Shader Programming - Dr. Jian Huang's presentation on OpenGL shaders; includes history, overview, rendering examples, and comparisons of ARB vs Cg. [PDF]
  
• Shader Language Comparison - PDF comparing HLSL, GLSL and Cg. Includes diagrams and code samples. [PDF]
  
• Wikipedia: Shading Language - Provides an overview and history of various shading languages.
  
• OpenGL Geometry Shader4 Extension - Specification for OpenGL's geometry shader APIs. Geometry shaders live in between vertex and fragment shaders in OpenGL's pipeline, and are used to introduce new primitives based on incoming vertices. Detailed documentation and pipeline diagram.
  
  

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