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/*
* 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_camera(KernelGlobals *kg, ShaderData *sd, float *stack, uint out_vector, uint out_zdepth, uint out_distance)
{
float distance;
float zdepth;
float3 vector;
Transform tfm = kernel_data.cam.worldtocamera;
vector = transform_point(&tfm, sd->P);
zdepth = vector.z;
distance = len(vector);
if (stack_valid(out_vector))
stack_store_float3(stack, out_vector, normalize(vector));
if (stack_valid(out_zdepth))
stack_store_float(stack, out_zdepth, zdepth);
if (stack_valid(out_distance))
stack_store_float(stack, out_distance, distance);
}
CCL_NAMESPACE_END
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