OpenGL Path-Tracing

Realtime Compute Shader Path-Tracing in OpenGL

Recommend not running this at full screen, and messing with shader parameters for more interactive framerates

Controls

• Click-and-drag to rotate camera about focus
• Hold right-click to rotate camera in first-person (will snap back to focus after releasing right-click)
• Scroll to move towards or away from focus
• Hold left control and scroll to change the field of view

Shader Recompilation

• Relevant shader code can be found in ComputeShader.glsl
  • Modify during execution: the program will recompile shaders on file save
  • Mess with constants (Lines 3-7)
• All shapes and objects are stored in the shader code, modify boxes and spheres arrays for different material parameters, sizes, and adding/removing objects
  • (will see performance penalty with more objects, no acceleration structure present)