uniform half4 colorGreen, colorRed, colorBlack, colorWhite, testInputs;

// This test covers mix(vec, vec, bvec).
// See MixFloatES2 and MixBool for additional forms of mix.

half4 main(float2 coords) {
    const half4 constBlack = half4(0, 0, 0, 1);
    const half4 constWhite = half4(1);
    const half4 constVal = half4(-1.25, 0, 0.75, 2.25);

    const bool4 constTFTF = bool4(true, false, true, false);
    bool4 FTFT = bool4(colorGreen);
    bool4 TFTF = FTFT.wzyx;

    return (mix(colorBlack.x,    colorWhite.x,    FTFT.x)         == colorBlack.x    &&
            mix(colorBlack.xy,   colorWhite.xy,   FTFT.xy)        == colorBlack.x1   &&
            mix(colorBlack.xyz,  colorWhite.xyz,  FTFT.xyz)       == colorBlack.x1z  &&
            mix(colorBlack.xyzw, colorWhite.xyzw, FTFT.xyzw)      == colorBlack.x1z1 &&
            mix(colorWhite.x,    testInputs.x,    TFTF.x)         == testInputs.x    &&
            mix(colorWhite.xy,   testInputs.xy,   TFTF.xy)        == testInputs.x1   &&
            mix(colorWhite.xyz,  testInputs.xyz,  TFTF.xyz)       == testInputs.x1z  &&
            mix(colorWhite.xyzw, testInputs.xyzw, TFTF.xyzw)      == testInputs.x1z1 &&
            mix(constWhite.x,    constVal.x,      constTFTF.x)    == constVal.x      &&
            mix(constWhite.xy,   constVal.xy,     constTFTF.xy)   == constVal.x1     &&
            mix(constWhite.xyz,  constVal.xyz,    constTFTF.xyz)  == constVal.x1z    &&
            mix(constWhite.xyzw, constVal.xyzw,   constTFTF.xyzw) == constVal.x1z1)
                ? colorGreen : colorRed;
}