/***

  Olive - Non-Linear Video Editor
  Copyright (C) 2019 Olive Team

  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 3 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, see <http://www.gnu.org/licenses/>.

***/

#include "alphaover.h"

AlphaOverBlend::AlphaOverBlend()
{

}

Node *AlphaOverBlend::copy() const
{
  return new AlphaOverBlend();
}

QString AlphaOverBlend::Name() const
{
  return tr("Alpha Over");
}

QString AlphaOverBlend::id() const
{
  return "org.olivevideoeditor.Olive.alphaoverblend";
}

QString AlphaOverBlend::Description() const
{
  return tr("A blending node that composites one texture over another using its alpha channel.");
}

QString AlphaOverBlend::Code() const
{
  return "#version 110"
         "\n"
         "varying vec2 v_texcoord;\n"
         "\n"
         "uniform sampler2D base_in;\n"
         "uniform sampler2D blend_in;\n"
         "\n"
         "void main(void) {\n"
         "  vec4 base_col = texture2D(base_in, v_texcoord);\n"
         "  vec4 blend_col = texture2D(blend_in, v_texcoord);\n"
         "  \n"
         "  gl_FragColor = base_col - blend_col.a + blend_col;\n"
         "}\n";
}