text: /*
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License
   * as published by the Free Software Foundation; either version 2
   * of the License, or (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software Foundation,
   * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
   *
   * The Original Code is Copyright (C) 2005 Blender Foundation.
   * All rights reserved.
   */
  
  /** \file
   * \ingroup texnodes
   */
  
  #include "node_texture_util.h"
  #include "NOD_texture.h"
  
  /* **************** MIX RGB ******************** */
  static bNodeSocketTemplate inputs[] = {
      {SOCK_FLOAT, 1, N_("Factor"), 0.5f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, PROP_NONE},
      {SOCK_RGBA, 1, N_("Color1"), 0.5f, 0.5f, 0.5f, 1.0f},
      {SOCK_RGBA, 1, N_("Color2"), 0.5f, 0.5f, 0.5f, 1.0f},
      {-1, 0, ""},
  };
  static bNodeSocketTemplate outputs[] = {
      {SOCK_RGBA, 0, N_("Color")},
      {-1, 0, ""},
  };
  
  static void colorfn(float *out, TexParams *p, bNode *node, bNodeStack **in, short thread)
  {
    float fac = tex_input_value(in[0], p, thread);
    float col1[4], col2[4];
  
    tex_input_rgba(col1, in[1], p, thread);
    tex_input_rgba(col2, in[2], p, thread);
  
    /* use alpha */
    if (node->custom2 & 1)
      fac *= col2[3];
  
    CLAMP(fac, 0.0f, 1.0f);
  
    copy_v4_v4(out, col1);
    ramp_blend(node->custom1, out, fac, col2);
  }
  
  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_mix_rgb(void)
  {
    static bNodeType ntype;
  
    tex_node_type_base(&ntype, TEX_NODE_MIX_RGB, "Mix", NODE_CLASS_OP_COLOR, 0);
    node_type_socket_templates(&ntype, inputs, outputs);
    node_type_label(&ntype, node_blend_label);
    node_type_exec(&ntype, NULL, NULL, exec);
  
    nodeRegisterType(&ntype);
  }
  