content: /*
   * Copyright (C) 2012 CyberAgent
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package jp.co.cyberagent.android.gpuimage;
  
  public class GPUImageSoftLightBlendFilter extends GPUImageTwoInputFilter {
      public static final String SOFT_LIGHT_BLEND_FRAGMENT_SHADER = "varying highp vec2 textureCoordinate;\n" +
              " varying highp vec2 textureCoordinate2;\n" +
              "\n" +
              " uniform sampler2D inputImageTexture;\n" +
              " uniform sampler2D inputImageTexture2;\n" +
              " \n" +
              " void main()\n" +
              " {\n" +
              "     mediump vec4 base = texture2D(inputImageTexture, textureCoordinate);\n" +
              "     mediump vec4 overlay = texture2D(inputImageTexture2, textureCoordinate2);\n" +
              "     \n" +
              "     gl_FragColor = base * (overlay.a * (base / base.a) + (2.0 * overlay * (1.0 - (base / base.a)))) + overlay * (1.0 - base.a) + base * (1.0 - overlay.a);\n" +
              " }";
  
      public GPUImageSoftLightBlendFilter() {
          super(SOFT_LIGHT_BLEND_FRAGMENT_SHADER);
      }
  }
  