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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
/* Vector Transform */
__device void svm_node_vector_transform(KernelGlobals *kg, ShaderData *sd, float *stack, uint4 node)
{
uint itype, ifrom, ito;
uint vector_in, vector_out;
decode_node_uchar4(node.y, &itype, &ifrom, &ito, NULL);
decode_node_uchar4(node.z, &vector_in, &vector_out, NULL, NULL);
float3 in = stack_load_float3(stack, vector_in);
NodeVectorTransformType type = (NodeVectorTransformType)itype;
NodeVectorTransformConvertSpace from = (NodeVectorTransformConvertSpace)ifrom;
NodeVectorTransformConvertSpace to = (NodeVectorTransformConvertSpace)ito;
Transform tfm;
bool is_object = (sd->object != ~0);
bool is_direction = (type == NODE_VECTOR_TRANSFORM_TYPE_VECTOR || type == NODE_VECTOR_TRANSFORM_TYPE_NORMAL);
/* From world */
if(from == NODE_VECTOR_TRANSFORM_CONVERT_SPACE_WORLD) {
if(to == NODE_VECTOR_TRANSFORM_CONVERT_SPACE_CAMERA) {
tfm = kernel_data.cam.worldtocamera;
if(is_direction)
in = transform_direction(&tfm, in);
else
in = transform_point(&tfm, in);
}
else if (to == NODE_VECTOR_TRANSFORM_CONVERT_SPACE_OBJECT && is_object) {
if(is_direction)
object_inverse_dir_transform(kg, sd, &in);
else
object_inverse_position_transform(kg, sd, &in);
}
}
/* From camera */
else if (from == NODE_VECTOR_TRANSFORM_CONVERT_SPACE_CAMERA) {
if(to == NODE_VECTOR_TRANSFORM_CONVERT_SPACE_WORLD || to == NODE_VECTOR_TRANSFORM_CONVERT_SPACE_OBJECT) {
tfm = kernel_data.cam.cameratoworld;
if(is_direction)
in = transform_direction(&tfm, in);
else
in = transform_point(&tfm, in);
}
if(to == NODE_VECTOR_TRANSFORM_CONVERT_SPACE_OBJECT && is_object) {
if(is_direction)
object_inverse_dir_transform(kg, sd, &in);
else
object_inverse_position_transform(kg, sd, &in);
}
}
/* From object */
else if(from == NODE_VECTOR_TRANSFORM_CONVERT_SPACE_OBJECT) {
if((to == NODE_VECTOR_TRANSFORM_CONVERT_SPACE_WORLD || to == NODE_VECTOR_TRANSFORM_CONVERT_SPACE_CAMERA) && is_object) {
if(is_direction)
object_dir_transform(kg, sd, &in);
else
object_position_transform(kg, sd, &in);
}
if(to == NODE_VECTOR_TRANSFORM_CONVERT_SPACE_CAMERA) {
tfm = kernel_data.cam.worldtocamera;
if(is_direction)
in = transform_direction(&tfm, in);
else
in = transform_point(&tfm, in);
}
}
/* Normalize Normal */
if(type == NODE_VECTOR_TRANSFORM_TYPE_NORMAL)
in = normalize(in);
/* Output */
if(stack_valid(vector_out)) {
stack_store_float3(stack, vector_out, in);
}
}
CCL_NAMESPACE_END
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