WebGL Conditionals optimized for performance. Use these instead of canonical 'or' and 'and' statements in GLSL code.

conditionals.glsl

float when_eq(float x, float y) {
	return 1.0 - abs(sign(x - y));
}

float when_neq(float x, float y) {
	return abs(sign(x - y));
}

float when_gt(float x, float y) {
	return max(sign(x - y), 0.0);
}

float when_lt(float x, float y) {
	return max(sign(y - x), 0.0);
}

float when_ge(float x, float y) {
	return 1.0 - when_lt(x, y);
}

float when_le(float x, float y) {
	return 1.0 - when_gt(x, y);
}

// and/or/xor
vec4 and(vec4 a, vec4 b) {
	return a * b;
}

vec4 or(vec4 a, vec4 b) {
	return min(a + b, 1.0);
}