sepcomb_vector.h

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/* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
 *
 * SPDX-License-Identifier: Apache-2.0 */
 
#pragma once
 
#include "kernel/svm/util.h"
 
CCL_NAMESPACE_BEGIN
 
/* Vector combine / separate, used for the RGB and XYZ nodes */
 
ccl_device void svm_node_combine_vector(ccl_private ShaderData *sd,
                                        ccl_private float *stack,
                                        const uint in_offset,
                                        const uint vector_index,
                                        const uint out_offset)
{
  const float vector = stack_load_float(stack, in_offset);
 
  if (stack_valid(out_offset)) {
    stack_store_float(stack, out_offset + vector_index, vector);
  }
}
 
ccl_device void svm_node_separate_vector(ccl_private ShaderData *sd,
                                         ccl_private float *stack,
                                         const uint ivector_offset,
                                         const uint vector_index,
                                         const uint out_offset)
{
  const float3 vector = stack_load_float3(stack, ivector_offset);
 
  if (stack_valid(out_offset)) {
    if (vector_index == 0) {
      stack_store_float(stack, out_offset, vector.x);
    }
    else if (vector_index == 1) {
      stack_store_float(stack, out_offset, vector.y);
    }
    else {
      stack_store_float(stack, out_offset, vector.z);
    }
  }
}
 
CCL_NAMESPACE_END