diff options
Diffstat (limited to 'intern/cycles/kernel/svm/normal.h')
-rw-r--r-- | intern/cycles/kernel/svm/normal.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/intern/cycles/kernel/svm/normal.h b/intern/cycles/kernel/svm/normal.h new file mode 100644 index 00000000000..6a2d88b68a6 --- /dev/null +++ b/intern/cycles/kernel/svm/normal.h @@ -0,0 +1,47 @@ +/* + * 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. + */ + +#pragma once + +CCL_NAMESPACE_BEGIN + +ccl_device_noinline int svm_node_normal(KernelGlobals kg, + ccl_private ShaderData *sd, + ccl_private 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 = __int_as_float(node1.x); + direction.y = __int_as_float(node1.y); + direction.z = __int_as_float(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))); + return offset; +} + +CCL_NAMESPACE_END |