diff options
Diffstat (limited to 'intern/cycles/kernel/svm/svm_normal.h')
-rw-r--r-- | intern/cycles/kernel/svm/svm_normal.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/intern/cycles/kernel/svm/svm_normal.h b/intern/cycles/kernel/svm/svm_normal.h new file mode 100644 index 00000000000..0b3f63b6d7e --- /dev/null +++ b/intern/cycles/kernel/svm/svm_normal.h @@ -0,0 +1,41 @@ +/* + * 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 + +__device void svm_node_normal(KernelGlobals *kg, ShaderData *sd, float *stack, uint in_normal_offset, uint out_normal_offset, uint out_dot_offset, int *offset) +{ + /* read extra data */ + uint4 node1 = read_node(kg, offset); + float3 normal = stack_load_float3(stack, in_normal_offset); + + float3 direction; + direction.x = node1.x; + direction.y = node1.y; + direction.z = node1.z; + direction = normalize(direction); + + if (stack_valid(out_normal_offset)) + stack_store_float3(stack, out_normal_offset, direction); + + if (stack_valid(out_dot_offset)) + stack_store_float(stack, out_dot_offset, dot(direction, normalize(normal))); +} + +CCL_NAMESPACE_END + |