1 2out vec4 sk_FragColor; 3uniform mat2 testMatrix2x2; 4uniform vec4 colorGreen; 5uniform vec4 colorRed; 6vec4 main() { 7 vec4 inputVal = vec4(testMatrix2x2) * vec4(1.0, 1.0, -1.0, -1.0); 8 ivec4 expectedB = ivec4(1065353216, 1073741824, -1069547520, -1065353216); 9 return ((inputVal.x == intBitsToFloat(expectedB.x) && inputVal.xy == intBitsToFloat(expectedB.xy)) && inputVal.xyz == intBitsToFloat(expectedB.xyz)) && inputVal == intBitsToFloat(expectedB) ? colorGreen : colorRed; 10} 11