/* SPDX-License-Identifier: GPL-2.0-or-later
 * Copyright 2005 Blender Foundation. All rights reserved. */

/** \file
 * \ingroup texnodes
 */

#include "NOD_texture.h"
#include "node_texture_util.h"

/* **************** INVERT ******************** */
static bNodeSocketTemplate inputs[] = {
    {SOCK_RGBA, N_("Color"), 0.0f, 0.0f, 0.0f, 1.0f},
    {-1, ""},
};

static bNodeSocketTemplate outputs[] = {
    {SOCK_RGBA, N_("Color")},
    {-1, ""},
};

static void colorfn(float *out, TexParams *p, bNode *UNUSED(node), bNodeStack **in, short thread)
{
  float col[4];

  tex_input_rgba(col, in[0], p, thread);

  col[0] = 1.0f - col[0];
  col[1] = 1.0f - col[1];
  col[2] = 1.0f - col[2];

  copy_v3_v3(out, col);
  out[3] = col[3];
}

static void exec(void *data,
                 int UNUSED(thread),
                 bNode *node,
                 bNodeExecData *execdata,
                 bNodeStack **in,
                 bNodeStack **out)
{
  tex_output(node, execdata, in, out[0], &colorfn, data);
}

void register_node_type_tex_invert(void)
{
  static bNodeType ntype;

  tex_node_type_base(&ntype, TEX_NODE_INVERT, "Invert", NODE_CLASS_OP_COLOR);
  node_type_socket_templates(&ntype, inputs, outputs);
  ntype.exec_fn = exec;

  nodeRegisterType(&ntype);
}