Advanced Light Transport in the VFX/Archiviz industry Juan Cañada – Head of Maxwell Render Next Limit Technologies.

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Presentation transcript:

Advanced Light Transport in the VFX/Archiviz industry Juan Cañada – Head of Maxwell Render Next Limit Technologies

Agenda - Introduction - Existing barriers - Possible solutions - Next steps Recent Advances in Light Transport Simulation: Theory & Practice

Advanced Light Transport why Research on light transport allows us to simulate complex scenarios Recent Advances in Light Transport Simulation: Theory & Practice

Advanced Light Transport why However current techniques are not enough ? Recent Advances in Light Transport Simulation: Theory & Practice

Advanced Light Transport why Are recent advances in light transport used by the industry? - The majority of the industry is using old techniques - A large percentage of current commercial renderers are PTs with MIS (1996) - Lighting TDs have learned to optimize scenes avoiding difficult scenarios Recent Advances in Light Transport Simulation: Theory & Practice

Advanced Light Transport problems Why are these methods not used more often? - Performance/Robustness - Implementation issues - Iteration Recent Advances in Light Transport Simulation: Theory & Practice

Advanced Light Transport problems Performance issues: - Robustness vs corner case scenarios - Multithreading/SIMD issues Recent Advances in Light Transport Simulation: Theory & Practice

Advanced Light Transport problems Implementation issues: - MLT/ERT, etc implementations are convoluted - Commercial renderers have to implement features on top - Debugging is not fun Recent Advances in Light Transport Simulation: Theory & Practice

Advanced Light Transport problems Iteration issues: - Most of the renders are tests - The user has to get feedback quickly - Convergence of MLT might not be visually appealing - Coherence vs Iteration (quick preview vs path exploration) Recent Advances in Light Transport Simulation: Theory & Practice

Advanced Light Transport problems Iteration issues vs Quick preview Efficient mutations Recent Advances in Light Transport Simulation: Theory & Practice

Advanced Light Transport problems Recent Advances in Light Transport Simulation: Theory & Practice

Advanced Light Transport next steps - More research is needed - Hybrid methods (preview vs final look) Recent Advances in Light Transport Simulation: Theory & Practice

Advanced Light Transport questions Questions Recent Advances in Light Transport Simulation: Theory & Practice Thanks!