forked from bartvdbraak/blender
42 lines
1.4 KiB
C
42 lines
1.4 KiB
C
/*
|
|
* 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 = __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
|
|
|