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** This file is part of the examples of Qt for Device Creation.
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import QtQuick 2.0

Effect {
    fragmentShaderSrc: "uniform float dividerValue;
                        uniform sampler2D source;
                        uniform lowp float qt_Opacity;
                        varying vec2 qt_TexCoord0;

                        void main()
                        {
                            vec2 uv = qt_TexCoord0.xy;
                            vec4 orig = texture2D(source, uv);
                            vec3 col = orig.rgb;
                            float y = 0.3 *col.r + 0.59 * col.g + 0.11 * col.b;
                            y = y < 0.3 ? 0.0 : (y < 0.6 ? 0.5 : 1.0);
                            if (y == 0.5)
                                col = vec3(0.8, 0.0, 0.0);
                            else if (y == 1.0)
                                col = vec3(0.9, 0.9, 0.0);
                            else
                                col = vec3(0.0, 0.0, 0.0);
                            if (uv.x < dividerValue)
                                gl_FragColor = qt_Opacity * vec4(col, 1.0);
                            else
                                gl_FragColor = qt_Opacity * orig;
                        }"
}