A Micrograin BSDF Model for the Rendering of Porous Layers

In this supplemental archive, we provide a number of additional derivations and results for our micrograin BSDF model. # Mathematical derivations (supplemental.pdf) In this document, we provide all the mathematical details used to derive formula in the paper, additional validations and comparisons. # Additional results (param-variations.pdf) In this document, we explore the appearance of homogeneous versions of our material model along parameter dimensions. # ShaderToy programs We have put three (anonymized) ShaderToy programs online, one for each of the three scenes described in the paper - Mossy stones : https://www.shadertoy.com/view/cty3Dt - Dusty wood : https://www.shadertoy.com/view/DlG3Dt - Graffiti : https://www.shadertoy.com/view/cly3Dt We encourage readers to try the shaders for themselves (in fullscreen), and inspect the corresponding GLSL code (in the common tab for the material source code, and in the main tab for scene management). Controls are the same for all three shaders, as described in their descriptions. In the case of the Mossy Stone scene, the screen is split in two to compare between linear blending and our weighting, as in Figure 14 of the paper. We also provide video captures of all three shaders in action.

In this supplemental archive, we provide a number of additional derivations and results for our micrograin BSDF model. In supplemental.pdf, we provide all the mathematical details used to derive formula in the paper, additional validations and comparisons. In param-variations.pdf, we explore the appearance of homogeneous versions of our material model along parameter dimensions. We have put three ShaderToy programs online, one for each of the three scenes described in the paper - Mossy stones : https://www.shadertoy.com/view/cty3Dt - Dusty wood : https://www.shadertoy.com/view/DlG3Dt - Graffiti : https://www.shadertoy.com/view/cly3Dt We also provide video captures of all three shaders in action.