Useful formulae in rendering.

• Specular BRDF Reference
  • Common formulae for PBR materials.
• Adopting a physically based shading model
  • A quick overview for PBR shading models.
• Feeding a physically based shading model
  • A quick reference for Fresnel related knowledge.
• Object Intersection Tests
  • An extensive collection of primitive intersection tests.
• Cone-AABB Intersection
  • Algorithm for intersecting a cone with an AABB.
• The Blinn-Phong Normalization Zoo
  • The process of normalizing the Phong BRDF family.
• How Is The NDF Really Defined?
  • Understanding the normal distribution function in microfacet BRDF.
• Crytek’s Best Fit Normals
  • A good entry to Crytek’s BFN.
• Filmic Tonemapping Operators
  • Simple and effective tone-mapping operators with source code.

Entries listed with no specific order.