diff options
Diffstat (limited to 'intern/cycles/kernel/svm/svm_distorted_noise.h')
| -rw-r--r-- | intern/cycles/kernel/svm/svm_distorted_noise.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/intern/cycles/kernel/svm/svm_distorted_noise.h b/intern/cycles/kernel/svm/svm_distorted_noise.h new file mode 100644 index 00000000000..469313e377d --- /dev/null +++ b/intern/cycles/kernel/svm/svm_distorted_noise.h @@ -0,0 +1,58 @@ +/* + * 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. + */ + +CCL_NAMESPACE_BEGIN + +/* Distorted Noise (variable lacunarity noise) */ + +__device float svm_distorted_noise(float3 p, float size, NodeNoiseBasis basis, NodeNoiseBasis distortion_basis, float distortion) +{ + float3 r; + + p /= size; + + r.x = noise_basis(p + make_float3(13.5f, 13.5f, 13.5f), basis) * distortion; + r.y = noise_basis(p, basis) * distortion; + r.z = noise_basis(p - make_float3(13.5f, 13.5f, 13.5f), basis) * distortion; + + return noise_basis(p + r, distortion_basis); /* distorted-domain noise */ +} + +__device void svm_node_tex_distorted_noise(KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node, int *offset) +{ + uint4 node2 = read_node(kg, offset); + + uint basis, distortion_basis; + uint size_offset, distortion_offset, co_offset, fac_offset; + + decode_node_uchar4(node.y, &basis, &distortion_basis, NULL, NULL); + decode_node_uchar4(node.z, &size_offset, &distortion_offset, &co_offset, &fac_offset); + + float3 co = stack_load_float3(stack, co_offset); + float size = stack_load_float_default(stack, size_offset, node2.x); + float distortion = stack_load_float_default(stack, distortion_offset, node2.y); + size = nonzerof(size, 1e-5f); + + float f = svm_distorted_noise(co, size, (NodeNoiseBasis)basis, + (NodeNoiseBasis)distortion_basis, distortion); + + stack_store_float(stack, fac_offset, f); +} + +CCL_NAMESPACE_END + |