/*
* 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 GPUImageExclusionBlendFilter extends GPUImageTwoInputFilter {
public static final String EXCLUSION_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" +
" // Dca = (Sca.Da + Dca.Sa - 2.Sca.Dca) + Sca.(1 - Da) + Dca.(1 - Sa)\n" +
" \n" +
" gl_FragColor = vec4((overlay.rgb * base.a + base.rgb * overlay.a - 2.0 * overlay.rgb * base.rgb) + overlay.rgb * (1.0 - base.a) + base.rgb * (1.0 - overlay.a), base.a);\n" +
" }";
public GPUImageExclusionBlendFilter() {
super(EXCLUSION_BLEND_FRAGMENT_SHADER);
}
}