From 615fe0295fe13c229d7376b02a50ac110b636c47 Mon Sep 17 00:00:00 2001 From: Brecht Van Lommel Date: Sat, 3 Nov 2012 14:32:13 +0000 Subject: Cycles OSL: refactoring and fixes * Moved kernel/osl/nodes to kernel/shaders * Renamed standard attributes to use geom:, particle:, object: prefixes * Update stdosl.h to properly reflect the closures we support * Fix the wrong stdosl.h being used for building shaders * Add geom:numpolyvertices, geom:trianglevertices, geom:polyvertices attributes --- intern/cycles/kernel/shaders/node_glass_bsdf.osl | 43 ++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 intern/cycles/kernel/shaders/node_glass_bsdf.osl (limited to 'intern/cycles/kernel/shaders/node_glass_bsdf.osl') diff --git a/intern/cycles/kernel/shaders/node_glass_bsdf.osl b/intern/cycles/kernel/shaders/node_glass_bsdf.osl new file mode 100644 index 00000000000..30b9d301f32 --- /dev/null +++ b/intern/cycles/kernel/shaders/node_glass_bsdf.osl @@ -0,0 +1,43 @@ +/* + * Copyright 2011, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include "stdosl.h" +#include "node_fresnel.h" + +shader node_glass_bsdf( + color Color = color(0.8, 0.8, 0.8), + string distribution = "Sharp", + float Roughness = 0.2, + float IOR = 1.45, + normal Normal = N, + output closure color BSDF = diffuse(Normal)) +{ + float f = max(IOR, 1.0 + 1e-5); + float eta = backfacing() ? 1.0 / f: f; + float Fr = fresnel_dielectric(I, Normal, eta); + + if (distribution == "Sharp") + BSDF = Color * (Fr * reflection(Normal) + (1.0 - Fr) * refraction(Normal, eta)); + else if (distribution == "Beckmann") + BSDF = Color * (Fr * microfacet_beckmann(Normal, Roughness) + + (1.0 - Fr) * microfacet_beckmann_refraction(Normal, Roughness, eta)); + else if (distribution == "GGX") + BSDF = Color * (Fr * microfacet_ggx(Normal, Roughness) + + (1.0 - Fr) * microfacet_ggx_refraction(Normal, Roughness, eta)); +} + -- cgit v1.2.3