CS184 Final Project Milestone Update

Realistic Real-time Rendering of Real Scenes using Ray-Tracing

By Adam Chang, Leo Adberg, and Mitchell Chase

Proposal Here

Milestone Slides Here

Update on real-time rendering

• Implemented texture baking for diffuse textures
  • Directly visible diffuse surfaces are now rasterized instead of raytraced
  • Rasterization framebuffer is also used to perform the first intersection of every ray
  • Only 1 ray is used per pixel (but can generate more when intersecting glass, mirrors, etc.)
• Implemented bidirectional raytracing / photon mapping
  • Currently only for environment lights, is only used as a baking pass
  • Can bake caustics and reflections much faster (needed as our scene will have most light going through windows)
• Performance estimates
  • Rendering custom CBSpheres at 960x720
  • 10 FPS at default view (glass + mirrors)
  • 20 FPS if no glass in view (mirrors OK)
  • 1 FPS if glass takes up entire FOV

Update on real scene reconstruction

• Implemented conversion from .ply to .dae files
• Implemented diffuse BSDF for individual triangles within a mesh
• Currently non-real-time performance

TODO

• Stretch goal: hardware acceleration for raytracing
  • Significant amount of work and our rasterization techniques already speed it up a lot
  • Implement alternative mesh storage system
• Different BSDF than diffuse for reconstructed scenes
• Texture + normal maps for reconstructed scenes
• Implement glossy BRDF for blurred/diffuse reflective material