Ray

A toy ray tracer engine as a practice to introductory computer graphics.

Featuring a Cycles Renderer-like composable shader system in Blender and more.

Features

• Shaders

  • Phong
  • Diffuse
  • Reflection
  • Refraction
  • (WIP) Chessboard
  • Rough surface shader
  • Transparent (Fresnel)
  • Solid
  • Glass
  • Mirror

• Light sources

  • Point light

• Objects

  • Sphere
  • Triangle & Rectangle (one-sided or double-sided)
  • Triangle mesh (imported via Wavefront .obj file), vertex normals supported
  • Chessboard plane
  • Object transformations (rotation/translation/scaling)

• Camera & Scene

  • Perspective & Orthogonal view
  • Ambient light and ambient color

• Image

  • Supersampling Anti-aliasing

Planned features

• Skybox
• Bezier surface
• Area light & soft shadow
• Illuminating object
• Monte-Carlo tracer
• Scripting language for describing the scene

Gallery

Preview	Features
	Frosted glass/mirror, Triangle, Chessboard
	Anti-aliasing, Colored glass/mirror
	Wavefront format, Triangle mesh, Smoothed surface normal
	Affine transformations, Normal map
	Frosted glass (reimplementation), Rough surface

Checkout gallery for more!

References

• Introduction to Ray Tracing: a Simple Method for Creating 3D Images
• Reflections and Refractions in Ray Tracing
• Reflection, Refraction and Fresnel
• Ambient, Diffuse, Specular and Emissive lighting
• StackOverflow: Refraction in Raytracing?
• Cornell CS4620/5620: Lecture 35
• Bézier Curves and Surfaces: the Utah Teapot
• Learn Computer Graphics From Scratch!
• Countless articles on scratchapixel
• Transformation Hierarchy
• A brief computer graphics / rendering course
• Akenine-Moller et al, "Real-Time Rendering", 3rd edition
• Transforming Normals / Tutorial