Android Open Source - FxCameraApp Gl Sobel Edge Detection Shader






From Project

Back to project page FxCameraApp.

License

The source code is released under:

MIT License

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Java Source Code

package com.af.experiments.FxCameraApp.shaders;
//w  w  w .  j  a  v a 2  s .  c o m
public class GlSobelEdgeDetectionShader extends GlShaderGroup {

    protected String mShaderName = "edges";

    @Override
    public String getName() {
        return mShaderName;
    }

    private static final String FRAGMENT_SHADER =
            "precision mediump 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 h = -topLeftIntensity - 2.0 * topIntensity - topRightIntensity + bottomLeftIntensity + 2.0 * bottomIntensity + bottomRightIntensity;" +
                    "float v = -bottomLeftIntensity - 2.0 * leftIntensity - topLeftIntensity + bottomRightIntensity + 2.0 * rightIntensity + topRightIntensity;" +

                    "float mag = length(vec2(h, v));" +
                    "gl_FragColor = vec4(vec3(mag), 1.0);" +
                    "}";

    public GlSobelEdgeDetectionShader() {
        this(FRAGMENT_SHADER);
    }

    protected GlSobelEdgeDetectionShader(final String fragmentShaderSource) {
        super(new GlGrayScaleShader(), new GlThreex3TextureSamplingShader(fragmentShaderSource));
    }

}




Java Source Code List

com.af.experiments.FxCameraApp.FilterAdapter.java
com.af.experiments.FxCameraApp.MyActivity.java
com.af.experiments.FxCameraApp.Utils.BitmapFactoryUtils.java
com.af.experiments.FxCameraApp.Utils.ExifUtils.java
com.af.experiments.FxCameraApp.Utils.Fps.java
com.af.experiments.FxCameraApp.Utils.LogWriter.java
com.af.experiments.FxCameraApp.Utils.OpenGlUtils.java
com.af.experiments.FxCameraApp.View.CameraView.java
com.af.experiments.FxCameraApp.View.DefaultPreview.java
com.af.experiments.FxCameraApp.View.GlPreview.java
com.af.experiments.FxCameraApp.View.PreviewTexture.java
com.af.experiments.FxCameraApp.camera.CameraHelperBase.java
com.af.experiments.FxCameraApp.camera.CameraHelperCupcake.java
com.af.experiments.FxCameraApp.camera.CameraHelperDonut.java
com.af.experiments.FxCameraApp.camera.CameraHelperEclair.java
com.af.experiments.FxCameraApp.camera.CameraHelperFactory.java
com.af.experiments.FxCameraApp.camera.CameraHelperFroyo.java
com.af.experiments.FxCameraApp.camera.CameraHelperGingerbread.java
com.af.experiments.FxCameraApp.camera.CameraHelperHonycomb.java
com.af.experiments.FxCameraApp.camera.CameraHelperICS.java
com.af.experiments.FxCameraApp.camera.CameraHelper.java
com.af.experiments.FxCameraApp.display.DisplayHelperBase.java
com.af.experiments.FxCameraApp.display.DisplayHelperFactory.java
com.af.experiments.FxCameraApp.display.DisplayHelperFroyo.java
com.af.experiments.FxCameraApp.display.DisplayHelperHoneycombMR2.java
com.af.experiments.FxCameraApp.display.DisplayHelperHoneycomb.java
com.af.experiments.FxCameraApp.display.DisplayHelper.java
com.af.experiments.FxCameraApp.ogles.DefaultConfigChooser.java
com.af.experiments.FxCameraApp.ogles.DefaultContextFactory.java
com.af.experiments.FxCameraApp.ogles.DefaultWindowSurfaceFactory.java
com.af.experiments.FxCameraApp.ogles.EGLLogWrapper.java
com.af.experiments.FxCameraApp.ogles.GLES20ConfigChooser.java
com.af.experiments.FxCameraApp.ogles.GLES20ContextFactory.java
com.af.experiments.FxCameraApp.ogles.GlImageBitmapTexture.java
com.af.experiments.FxCameraApp.ogles.GlImageResourceTexture.java
com.af.experiments.FxCameraApp.ogles.GlImageTexture.java
com.af.experiments.FxCameraApp.ogles.GlPreviewTextureFactory.java
com.af.experiments.FxCameraApp.ogles.GlSurfaceTexture.java
com.af.experiments.FxCameraApp.ogles.GlTextureView.java
com.af.experiments.FxCameraApp.ogles.PixelBuffer.java
com.af.experiments.FxCameraApp.ogles.PreviewSurfaceHelperBase.java
com.af.experiments.FxCameraApp.ogles.PreviewSurfaceHelperFactory.java
com.af.experiments.FxCameraApp.ogles.PreviewSurfaceHelper.java
com.af.experiments.FxCameraApp.ogles.Texture.java
com.af.experiments.FxCameraApp.renderer.GLES20FramebufferObject.java
com.af.experiments.FxCameraApp.renderer.GlFrameBufferObjectRenderer.java
com.af.experiments.FxCameraApp.renderer.MainRenderer.java
com.af.experiments.FxCameraApp.shaders.GlBilateralShader.java
com.af.experiments.FxCameraApp.shaders.GlBoxBlurShader.java
com.af.experiments.FxCameraApp.shaders.GlBulgeDistortionShader.java
com.af.experiments.FxCameraApp.shaders.GlCGAColorspaceShader.java
com.af.experiments.FxCameraApp.shaders.GlColorInvertShader.java
com.af.experiments.FxCameraApp.shaders.GlColorMatrixShader.java
com.af.experiments.FxCameraApp.shaders.GlColorPackingShader.java
com.af.experiments.FxCameraApp.shaders.GlConvolutionShader.java
com.af.experiments.FxCameraApp.shaders.GlEmbossShader.java
com.af.experiments.FxCameraApp.shaders.GlFalseColorShader.java
com.af.experiments.FxCameraApp.shaders.GlFastBlurShader.java
com.af.experiments.FxCameraApp.shaders.GlGaussianBlurShader.java
com.af.experiments.FxCameraApp.shaders.GlGlassSphereShader.java
com.af.experiments.FxCameraApp.shaders.GlGrayScaleShader.java
com.af.experiments.FxCameraApp.shaders.GlHarrisCornerDetectionShader.java
com.af.experiments.FxCameraApp.shaders.GlHazeShader.java
com.af.experiments.FxCameraApp.shaders.GlMonochromeShader.java
com.af.experiments.FxCameraApp.shaders.GlNobleCornerDetectionShader.java
com.af.experiments.FxCameraApp.shaders.GlPerlinNoiseShader.java
com.af.experiments.FxCameraApp.shaders.GlPinchDistortionShader.java
com.af.experiments.FxCameraApp.shaders.GlPixellateShader.java
com.af.experiments.FxCameraApp.shaders.GlPolarPixellateShader.java
com.af.experiments.FxCameraApp.shaders.GlPolkaDotShader.java
com.af.experiments.FxCameraApp.shaders.GlPosterizeShader.java
com.af.experiments.FxCameraApp.shaders.GlPreviewShader.java
com.af.experiments.FxCameraApp.shaders.GlSepiaShader.java
com.af.experiments.FxCameraApp.shaders.GlShaderGroup.java
com.af.experiments.FxCameraApp.shaders.GlShader.java
com.af.experiments.FxCameraApp.shaders.GlSharpenShader.java
com.af.experiments.FxCameraApp.shaders.GlShiTomasiFeatureDetectionShader.java
com.af.experiments.FxCameraApp.shaders.GlSobelEdgeDetectionShader.java
com.af.experiments.FxCameraApp.shaders.GlSphereRefractionShader.java
com.af.experiments.FxCameraApp.shaders.GlStretchDistortionShader.java
com.af.experiments.FxCameraApp.shaders.GlThreex3ConvolutionShader.java
com.af.experiments.FxCameraApp.shaders.GlThreex3TextureSamplingShader.java
com.af.experiments.FxCameraApp.shaders.GlToneShader.java
com.af.experiments.FxCameraApp.shaders.GlTwoInputShader.java
com.af.experiments.FxCameraApp.shaders.GlVignetteShader.java
com.af.experiments.FxCameraApp.shaders.GlWeakPixelInclusionShader.java
com.af.experiments.FxCameraApp.shaders.GlWhiteBalanceShader.java
com.af.experiments.FxCameraApp.shaders.GlXRayShader.java
com.af.experiments.FxCameraApp.shaders.GlXYDerivativeShader.java
com.af.experiments.FxCameraApp.shaders.fx.GlLutShader.java