out vec4 sk_FragColor; | |
uniform vec4 colorGreen; | |
uniform vec4 colorRed; | |
vec4 main() { | |
bool ok = true; | |
ok = ok && !(colorGreen.x == 1.0); | |
uint val = uint(colorGreen.x); | |
uvec2 mask = uvec2(val, ~val); | |
ivec2 imask = ivec2(~mask); | |
mask = ~mask & uvec2(~imask); | |
ok = ok && mask == uvec2(0u); | |
float one = colorGreen.x; | |
mat4 m = mat4(one); | |
return ok ? -m * -colorGreen : colorRed; | |
} |