sepcomb_hsv.h

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/* SPDX-FileCopyrightText: 2011-2022 Blender Foundation
 *
 * SPDX-License-Identifier: Apache-2.0 */
 
#pragma once
 
#include "kernel/svm/util.h"
 
#include "util/color.h"
 
CCL_NAMESPACE_BEGIN
 
ccl_device_noinline int svm_node_combine_hsv(KernelGlobals kg,
                                             ccl_private ShaderData *sd,
                                             ccl_private float *stack,
                                             const uint hue_in,
                                             const uint saturation_in,
                                             const uint value_in,
                                             int offset)
{
  const uint4 node1 = read_node(kg, &offset);
  const uint color_out = node1.y;
 
  const float hue = stack_load_float(stack, hue_in);
  const float saturation = stack_load_float(stack, saturation_in);
  const float value = stack_load_float(stack, value_in);
 
  /* Combine, and convert back to RGB */
  const float3 color = hsv_to_rgb(make_float3(hue, saturation, value));
 
  if (stack_valid(color_out)) {
    stack_store_float3(stack, color_out, color);
  }
  return offset;
}
 
ccl_device_noinline int svm_node_separate_hsv(KernelGlobals kg,
                                              ccl_private ShaderData *sd,
                                              ccl_private float *stack,
                                              const uint color_in,
                                              const uint hue_out,
                                              const uint saturation_out,
                                              int offset)
{
  const uint4 node1 = read_node(kg, &offset);
  const uint value_out = node1.y;
 
  float3 color = stack_load_float3(stack, color_in);
 
  /* Convert to HSV */
  color = rgb_to_hsv(color);
 
  if (stack_valid(hue_out)) {
    stack_store_float(stack, hue_out, color.x);
  }
  if (stack_valid(saturation_out)) {
    stack_store_float(stack, saturation_out, color.y);
  }
  if (stack_valid(value_out)) {
    stack_store_float(stack, value_out, color.z);
  }
  return offset;
}
 
CCL_NAMESPACE_END