afa66fc628
Clamp some of the inputs of the Glossy BSDF, Glass BSDF, Sheen BSDF, and Subsurface Scattering nodes to improve consistency between render engines and to avoid unexpected results. * Clamp roughness to 0..1 * Clamp subsurface radius to 0..inf * Clamp colors to 0..inf Pull Request: https://projects.blender.org/blender/blender/pulls/120390
26 lines
787 B
Plaintext
26 lines
787 B
Plaintext
/* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
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*
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* SPDX-License-Identifier: Apache-2.0 */
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#include "node_fresnel.h"
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#include "stdcycles.h"
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shader node_glass_bsdf(color Color = 0.8,
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string distribution = "ggx",
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float Roughness = 0.2,
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float IOR = 1.45,
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normal Normal = N,
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output closure color BSDF = 0)
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{
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color base_color = max(Color, color(0.0));
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float r2 = clamp(Roughness, 0.0, 1.0);
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r2 = r2 * r2;
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float eta = max(IOR, 1e-5);
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eta = backfacing() ? 1.0 / eta : eta;
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color F0 = F0_from_ior(eta);
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color F90 = color(1.0);
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BSDF = generalized_schlick_bsdf(
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Normal, vector(0.0), base_color, base_color, r2, r2, F0, F90, -eta, distribution);
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}
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