diff options
Diffstat (limited to 'intern/cycles/kernel/shaders/node_principled_bsdf.osl')
| -rw-r--r-- | intern/cycles/kernel/shaders/node_principled_bsdf.osl | 157 |
1 files changed, 0 insertions, 157 deletions
diff --git a/intern/cycles/kernel/shaders/node_principled_bsdf.osl b/intern/cycles/kernel/shaders/node_principled_bsdf.osl deleted file mode 100644 index 55afb892d36..00000000000 --- a/intern/cycles/kernel/shaders/node_principled_bsdf.osl +++ /dev/null @@ -1,157 +0,0 @@ -/* - * Copyright 2011-2017 Blender Foundation - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include "node_fresnel.h" -#include "stdcycles.h" - -shader node_principled_bsdf(string distribution = "Multiscatter GGX", - string subsurface_method = "random_walk", - color BaseColor = color(0.8, 0.8, 0.8), - float Subsurface = 0.0, - vector SubsurfaceRadius = vector(1.0, 1.0, 1.0), - color SubsurfaceColor = color(0.7, 0.1, 0.1), - float SubsurfaceIOR = 1.4, - float SubsurfaceAnisotropy = 0.0, - float Metallic = 0.0, - float Specular = 0.5, - float SpecularTint = 0.0, - float Roughness = 0.5, - float Anisotropic = 0.0, - float AnisotropicRotation = 0.0, - float Sheen = 0.0, - float SheenTint = 0.5, - float Clearcoat = 0.0, - float ClearcoatRoughness = 0.03, - float IOR = 1.45, - float Transmission = 0.0, - float TransmissionRoughness = 0.0, - normal Normal = N, - normal ClearcoatNormal = N, - normal Tangent = normalize(dPdu), - output closure color BSDF = 0) -{ - float f = max(IOR, 1e-5); - float diffuse_weight = (1.0 - clamp(Metallic, 0.0, 1.0)) * (1.0 - clamp(Transmission, 0.0, 1.0)); - float final_transmission = clamp(Transmission, 0.0, 1.0) * (1.0 - clamp(Metallic, 0.0, 1.0)); - float specular_weight = (1.0 - final_transmission); - - vector T = Tangent; - - float m_cdlum = luminance(BaseColor); - color m_ctint = m_cdlum > 0.0 ? BaseColor / m_cdlum : - color(1.0, 1.0, 1.0); // normalize lum. to isolate hue+sat - - /* rotate tangent */ - if (AnisotropicRotation != 0.0) - T = rotate(T, AnisotropicRotation * M_2PI, point(0.0, 0.0, 0.0), Normal); - - if (diffuse_weight > 1e-5) { - if (Subsurface > 1e-5) { - color mixed_ss_base_color = SubsurfaceColor * Subsurface + BaseColor * (1.0 - Subsurface); - - BSDF = mixed_ss_base_color * bssrdf(subsurface_method, - Normal, - Subsurface * SubsurfaceRadius, - mixed_ss_base_color, - "roughness", - Roughness, - "ior", - SubsurfaceIOR, - "anisotropy", - SubsurfaceAnisotropy); - } - else { - BSDF = BaseColor * principled_diffuse(Normal, Roughness); - } - - if (Sheen > 1e-5) { - color sheen_color = color(1.0, 1.0, 1.0) * (1.0 - SheenTint) + m_ctint * SheenTint; - - BSDF = BSDF + sheen_color * Sheen * principled_sheen(Normal); - } - - BSDF = BSDF * diffuse_weight; - } - - if (specular_weight > 1e-5) { - float aspect = sqrt(1.0 - Anisotropic * 0.9); - float r2 = Roughness * Roughness; - - float alpha_x = r2 / aspect; - float alpha_y = r2 * aspect; - - color tmp_col = color(1.0, 1.0, 1.0) * (1.0 - SpecularTint) + m_ctint * SpecularTint; - - color Cspec0 = (Specular * 0.08 * tmp_col) * (1.0 - Metallic) + BaseColor * Metallic; - - if (distribution == "GGX" || Roughness <= 0.075) { - BSDF = BSDF + specular_weight * - microfacet_ggx_aniso_fresnel(Normal, - T, - alpha_x, - alpha_y, - (2.0 / (1.0 - sqrt(0.08 * Specular))) - 1.0, - BaseColor, - Cspec0); - } - else { - BSDF = BSDF + specular_weight * microfacet_multi_ggx_aniso_fresnel( - Normal, - T, - alpha_x, - alpha_y, - (2.0 / (1.0 - sqrt(0.08 * Specular))) - 1.0, - BaseColor, - Cspec0); - } - } - - if (final_transmission > 1e-5) { - color Cspec0 = BaseColor * SpecularTint + color(1.0, 1.0, 1.0) * (1.0 - SpecularTint); - float eta = backfacing() ? 1.0 / f : f; - - if (distribution == "GGX" || Roughness <= 5e-2) { - float cosNO = dot(Normal, I); - float Fr = fresnel_dielectric_cos(cosNO, eta); - - float refl_roughness = Roughness; - if (Roughness <= 1e-2) - refl_roughness = 0.0; - - float transmission_roughness = refl_roughness; - if (distribution == "GGX") - transmission_roughness = 1.0 - (1.0 - refl_roughness) * (1.0 - TransmissionRoughness); - - BSDF = BSDF + - final_transmission * - (Fr * microfacet_ggx_fresnel( - Normal, refl_roughness * refl_roughness, eta, BaseColor, Cspec0) + - (1.0 - Fr) * BaseColor * - microfacet_ggx_refraction( - Normal, transmission_roughness * transmission_roughness, eta)); - } - else { - BSDF = BSDF + - final_transmission * microfacet_multi_ggx_glass_fresnel( - Normal, Roughness * Roughness, eta, BaseColor, Cspec0); - } - } - - if (Clearcoat > 1e-5) { - BSDF = BSDF + principled_clearcoat( - ClearcoatNormal, Clearcoat, ClearcoatRoughness * ClearcoatRoughness); - } -} |