4 ms·

Just color? https://physicallybased.info/ https://physicallybased.info/ I would have hoped for BRDF info as well.

• apq 4y ago
  Could you explain your workflow using BRDF, and what application you're using? I just want to know the real world use case for this kind of data. I'm open to expanding the database to include BRDF data as well.
  • naillo 4y ago
    I'm just building ray tracers from scratch mostly and having raw BRDF data would make that easier.
  • magicalhippo 4y ago
    I contributed a tiny bit to pbrt[1], and one of the things I loved was that if you just plugged in physical values you almost always got great results with minimal tweaking. The Octane data seems most complete at first glance (with complex IOR etc), but for things like milk and blood I expected at the very least some absorption coefficient for the translucency or similar. [1]: https://pbrt.org/ https://pbrt.org/
  • spookie 4y ago
    Creating fragment shaders from scratch
• me_bx 4y ago
  TIL BRDF stands for Bidirectional Reflectance Distribution Function > [It] is a function of four real variables that defines how light is reflected at an opaque surface. [...] The function takes an incoming light direction, ωi, and outgoing direction, ωr (taken in a coordinate system where the surface normal n lies along the z-axis), and returns the ratio of reflected radiance exiting along ωr to the irradiance incident on the surface from direction ωi. Source: https://en.wikipedia.org/wiki/Bidirectional_reflectance_distribution_function https://en.wikipedia.org/wiki/Bidirectional_reflectance_dist...