Problem
A bidirectional texture function represents how a material’s appearance changes with lighting and viewing direction. That richness creates a representation problem: preserving the appearance while making evaluation and storage practical.
Constraints
Quality, efficiency and memory use have to be considered together. An offline reconstruction is not the same as an integrated rendering implementation, so the technique needs to be evaluated in both contexts.
What we did
Traverse investigated enhancements to NeuMIP-based bidirectional texture functions. The work was demonstrated in Mitsuba 2 and in the in-house Breda real-time framework, connecting the representation to a rendering environment.
Results
The public project page includes the publication, source code and the authors’ material-quality and compression comparisons.