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float _determinant2(mat2 m) { return m[0][0] * m[1][1] - m[0][1] * m[1][0];}out vec4 sk_FragColor;
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uniform mat2 testMatrix2x2;
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uniform vec4 colorGreen;
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uniform vec4 colorRed;
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vec4 main() {
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return _determinant2(testMatrix2x2) == -2.0 ? colorGreen : colorRed;
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}
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