blender/intern/cycles/kernel/svm/svm_normal.h
Thomas Dinges ee36e75b85 Cleanup: Fix Cycles Apache header.
This was already mixed a bit, but the dot belongs there.
2014-12-25 02:50:24 +01:00

40 lines
1.3 KiB
C

/*
* 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.
*/
CCL_NAMESPACE_BEGIN
ccl_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 = __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)));
}
CCL_NAMESPACE_END