Path-Tracing Workshop Part 1

This is part one of a two-part workshop for writing your own path tracer in the OpenGL* Shading Language (GLSL) using Shadertoy. The workshop consists of a presentation that guides you through each step, interspersed with exercises.

This workshop shows how to:

• Implement ray tracing in software on the GPU.
• Use GLSL, Shadertoy, camera models, ray-triangle intersection tests, and ray-mesh intersection tests.
• Deliver the result: a rendered image without any shading.

• A browser
• Some experience with C-like programming languages and basic vector math (for example, matrix-vector products)

Christoph Peters is a graphics researcher at Intel. He has done real-time rendering research for a decade with recent work focusing on important sampling strategies for real-time path tracing. He has also lectured at Karlsruhe Institute of Technology for interactive computer graphics. Christoph holds a PhD in computer graphics and a master of science in computer science from the University of Bonn.

Get the Intel® Rendering Toolkit: Powerful, open source libraries for high-fidelity rendering and visualization applications.

• Presentation Slides
• Hello Shadertoy
• Exercises
  
  1. Primary Rays
  2. Ray-Triangle Test
  3. Ray-Mesh Test
• Exercise Solutions