Android Open Source - FxCameraApp Gl Weak Pixel Inclusion Shader

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License

The source code is released under:

MIT License

Java Source Code

package com.af.experiments.FxCameraApp.shaders;
/*from  w  w w . j  a  v a 2  s.  c om*/
public class GlWeakPixelInclusionShader extends GlThreex3TextureSamplingShader {

  private static final String FRAGMENT_SHADER =
      "precision lowp float;\n" +

      "uniform lowp sampler2D sTexture;\n" +

      "varying vec2 textureCoordinate;\n" +
      "varying vec2 leftTextureCoordinate;\n" +
      "varying vec2 rightTextureCoordinate;\n" +

      "varying vec2 topTextureCoordinate;\n" +
      "varying vec2 topLeftTextureCoordinate;\n" +
      "varying vec2 topRightTextureCoordinate;\n" +

      "varying vec2 bottomTextureCoordinate;\n" +
      "varying vec2 bottomLeftTextureCoordinate;\n" +
      "varying vec2 bottomRightTextureCoordinate;\n" +

      "void main() {\n" +
        "float bottomLeftIntensity = texture2D(sTexture, bottomLeftTextureCoordinate).r;" +
        "float topRightIntensity = texture2D(sTexture, topRightTextureCoordinate).r;" +
        "float topLeftIntensity = texture2D(sTexture, topLeftTextureCoordinate).r;" +
        "float bottomRightIntensity = texture2D(sTexture, bottomRightTextureCoordinate).r;" +
        "float leftIntensity = texture2D(sTexture, leftTextureCoordinate).r;" +
        "float rightIntensity = texture2D(sTexture, rightTextureCoordinate).r;" +
        "float bottomIntensity = texture2D(sTexture, bottomTextureCoordinate).r;" +
        "float topIntensity = texture2D(sTexture, topTextureCoordinate).r;" +
        "float centerIntensity = texture2D(sTexture, textureCoordinate).r;" +

        "float pixelIntensitySum = bottomLeftIntensity + topRightIntensity + topLeftIntensity + bottomRightIntensity + leftIntensity + rightIntensity + bottomIntensity + topIntensity + centerIntensity;" +
        "float sumTest = step(1.5, pixelIntensitySum);" +
        "float pixelTest = step(0.01, centerIntensity);" +

        "gl_FragColor = vec4(vec3(sumTest * pixelTest), 1.0);" +
      "}";

  public GlWeakPixelInclusionShader() {
    super(FRAGMENT_SHADER);
  }

}

Java Source Code List

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