diff options
author | Brecht Van Lommel <brecht@blender.org> | 2021-10-24 15:19:19 +0300 |
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committer | Brecht Van Lommel <brecht@blender.org> | 2021-10-26 16:36:39 +0300 |
commit | d7d40745fa09061a3117bd3669c5a46bbf611eae (patch) | |
tree | 8dbaca086ecbb09aad62c25e9ece66332fe79af3 /intern/cycles/kernel/osl/shaders/node_anisotropic_bsdf.osl | |
parent | b698fe1e047e56e8ed67ba47464c0017d9c50eea (diff) |
Cycles: changes to source code folders structure
* Split render/ into scene/ and session/. The scene/ folder now contains the
scene and its nodes. The session/ folder contains the render session and
associated data structures like drivers and render buffers.
* Move top level kernel headers into new folders kernel/camera/, kernel/film/,
kernel/light/, kernel/sample/, kernel/util/
* Move integrator related kernel headers into kernel/integrator/
* Move OSL shaders from kernel/shaders/ to kernel/osl/shaders/
For patches and branches, git merge and rebase should be able to detect the
renames and move over code to the right file.
Diffstat (limited to 'intern/cycles/kernel/osl/shaders/node_anisotropic_bsdf.osl')
-rw-r--r-- | intern/cycles/kernel/osl/shaders/node_anisotropic_bsdf.osl | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/intern/cycles/kernel/osl/shaders/node_anisotropic_bsdf.osl b/intern/cycles/kernel/osl/shaders/node_anisotropic_bsdf.osl new file mode 100644 index 00000000000..739cd375ab2 --- /dev/null +++ b/intern/cycles/kernel/osl/shaders/node_anisotropic_bsdf.osl @@ -0,0 +1,57 @@ +/* + * Copyright 2011-2013 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 "stdcycles.h" + +shader node_anisotropic_bsdf(color Color = 0.0, + string distribution = "GGX", + float Roughness = 0.0, + float Anisotropy = 0.0, + float Rotation = 0.0, + normal Normal = N, + normal Tangent = normalize(dPdu), + output closure color BSDF = 0) +{ + /* rotate tangent around normal */ + vector T = Tangent; + + if (Rotation != 0.0) + T = rotate(T, Rotation * M_2PI, point(0.0, 0.0, 0.0), Normal); + + /* compute roughness */ + float roughness = Roughness * Roughness; + float roughness_u, roughness_v; + float aniso = clamp(Anisotropy, -0.99, 0.99); + + if (aniso < 0.0) { + roughness_u = roughness / (1.0 + aniso); + roughness_v = roughness * (1.0 + aniso); + } + else { + roughness_u = roughness * (1.0 - aniso); + roughness_v = roughness / (1.0 - aniso); + } + + if (distribution == "sharp") + BSDF = Color * reflection(Normal); + else if (distribution == "beckmann") + BSDF = Color * microfacet_beckmann_aniso(Normal, T, roughness_u, roughness_v); + else if (distribution == "GGX") + BSDF = Color * microfacet_ggx_aniso(Normal, T, roughness_u, roughness_v); + else if (distribution == "Multiscatter GGX") + BSDF = Color * microfacet_multi_ggx_aniso(Normal, T, roughness_u, roughness_v, Color); + else + BSDF = Color * ashikhmin_shirley(Normal, T, roughness_u, roughness_v); +} |