GPUImageDifferenceBlendFilter.java

/*
 * 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 GPUImageDifferenceBlendFilter extends GPUImageTwoInputFilter {
    public static final String DIFFERENCE_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 textureColor = texture2D(inputImageTexture, textureCoordinate);\n" +
            "     mediump vec4 textureColor2 = texture2D(inputImageTexture2, textureCoordinate2);\n" +
            "     gl_FragColor = vec4(abs(textureColor2.rgb - textureColor.rgb), textureColor.a);\n" +
            " }";

    public GPUImageDifferenceBlendFilter() {
        super(DIFFERENCE_BLEND_FRAGMENT_SHADER);
    }
}