Raytracing Part II
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The document discusses ray tracing techniques including shader functions, barycentric coordinates for triangles, and various methods for managing noise in ray tracing, such as stratified sampling and Gaussian blur. It highlights the challenges and advancements in ray tracing, including the use of AI denoisers and hybrid techniques used in modern graphics. The content also emphasizes the computational expense associated with ray tracing today.
Raytracing Part II
- 2. Ray Generation Shader Main Functions DispatchRaysIndex() DispatchRayDimensions() TraceRay(..)
- 3. Simple Ray t=0 t=1 t=1.5 A B P(t) = A + tb b
- 4. Closet-Hit Shader Main Functions WorldRayOrigin() WorldRayDirection() RayTCurrent() PrimitiveIndex()
- 6. Triangle barycentrics coordinates A B C P = wA+uB+vC u v w P Barycentric (u, v, w)
- 7. Triangle barycentrics coordinates A B C P = (1-u-v )A+uB+vC u v w P Normalized barycentric coords 1 = u + v + w P = wA+uB+vC Barycentric (u, v, w)
- 8. Triangle barycentrics coordinates A (0,0,1) B (1,0,0) C (0,1,0) P = (1-u-v )A+uB+vC u v w P P = A = 1A + 0B +0C P = B = 0A + 1B +0C P = C = 0A + 0B +1C Barycentric (u, v, (1-u-v ))
- 9. Triangle barycentrics coordinates A (0,0,1) B (1,0,0) C (0,1,0) u v w P P = (1-u-v )A+uB+vC Barycentric (u, v, (1-u-v ))
- 10. Raytracing New Shader functions
- 11. Raytracing New Shader functions
- 17. Raytracing Noise Challengue Scattered rays Random.NextDouble(); White Noise
- 18. Raytracing Noise Challengue White Noise Blue Noise
- 19. Raytracing Noise Challengue White Noise Gaussian Blur Blue Noise Gaussian Blur
- 20. Raytracing Noise Challengue Random Points Stratified Sampling (Jittering)
- 24. Raytracing Noise Challengue Uniform distribution Light distribution PDF distribution
- 25. Raytracing Denoiser Quake 2 denoiser
- 27. RTX debuggers
- 28. Nowdays Raytracing is expensive EA: Hybrid ray tracing in PICA PICA
- 29. Nowdays Raytracing is expensive Deep Learning Super Sampling
- 30. Nowdays Raytracing is expensive Deep Learning Super Sampling
- 31. Raytracing Books
- 32. THE END