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/* SPDX-License-Identifier: Apache-2.0
* Copyright 2011-2022 Blender Foundation */
#pragma once
CCL_NAMESPACE_BEGIN
/* Vector Transform */
ccl_device_noinline void svm_node_vector_transform(KernelGlobals kg,
ccl_private ShaderData *sd,
ccl_private float *stack,
uint4 node)
{
uint itype, ifrom, ito;
uint vector_in, vector_out;
svm_unpack_node_uchar3(node.y, &itype, &ifrom, &ito);
svm_unpack_node_uchar2(node.z, &vector_in, &vector_out);
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 != OBJECT_NONE);
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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