uniform float2x2 testMatrix2x2;
uniform half4 colorGreen, colorRed;

half4 main(float2 coords) {
    const float4 constVal = float4(-1, 0, 1, 2);
    const int4 expectedA = int4(-0x40800000, 0x00000000, 0x3F800000, 0x40000000);

    float4 inputVal = float4(testMatrix2x2) * float4(1, 1, -1, -1);
    int4 expectedB = int4(0x3F800000, 0x40000000, -0x3FC00000, -0x3F800000);

    return (constVal.x    == intBitsToFloat(expectedA.x)    &&
            constVal.xy   == intBitsToFloat(expectedA.xy)   &&
            constVal.xyz  == intBitsToFloat(expectedA.xyz)  &&
            constVal.xyzw == intBitsToFloat(expectedA.xyzw) &&
            inputVal.x    == intBitsToFloat(expectedB.x)    &&
            inputVal.xy   == intBitsToFloat(expectedB.xy)   &&
            inputVal.xyz  == intBitsToFloat(expectedB.xyz)  &&
            inputVal.xyzw == intBitsToFloat(expectedB.xyzw)) ? colorGreen : colorRed;
}