Simon LUCAS

We are excited to announce our work on efficient precomputation for real-time global illumination, presented at EGSR'26 last week! Learn more: repo-sam.inria.fr/nerphys/pbr_gs. This work was conducted with @SimonLUCAS_CG and @GDrettakis. Funded by the ERC Advanced Grant NERPHYS.

If you don't have any idea of what are micrograins, my previous thread was on it : x.com/SimonLUCAS_CG/… [4/4]

By removing the Smith assumptions, our model differ significantly with previous works, especially at grazing angle and in retroreflection configuration. Here are some examples : [3/4]

I am very pleased to share our last paper with Mickaël Ribardière, @drpaca and Pascal Barla : "A Fully-correlated Anisotropic Micrograin BSDF Model" (hal.science/hal-04567402) I can't wait to present it at @siggraph ! The main contribution of this work is ... [1/4]

Graphics Programming weekly - Issue 308 - October 8th, 2023 jendrikillner.com/post/graphics-…

Here are some images showcasing appearances achiveable with our model : hazy-reflection, grazing-angle color changes... [5/5]

By using the micrograins as a structural proxy for the microfacets framework, we derived the main functions of the microfacet theory. We found that our new normal distribution function extends the Trowbridge-Reitz (GGX) distribution to handle porosity. [4/5]

I am pleased to share our @siggraphasia conf paper "A Micrograin BSDF Model for the Rendering of Porous Layers" with @drpaca, M. Ribardière and P. Barla : hal.science/hal-04220006 In this paper, we introduce the concept of micrograins ... [1/5]

Here's a preview of the amazing submissions we received in the #HPG2022 Student Competition. Check out this page for tech details & shadertoy links for each solution: highperformancegraphics.org/2022/student-c… We will announce winners tomorrow. Thanks to all the students who participated!

It was a pleasure to code with @xavierchermain Real-Time Geometric Glint Anti-Aliasing With Normal Map Filtering, accepted at @I3DCONF. Github: github.com/ASTex-ICube/aa… Playing with NDF transformations and NDF filtering through OpenGL functions was fun!