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/* SPDX-License-Identifier: Apache-2.0
* Copyright 2011-2022 Blender Foundation */
#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
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