[require]
GLSL >= 1.30

[vertex shader passthrough]

[fragment shader]

float Temp = 0.0;
void main()
{
	Temp = log2(Temp);
	Temp = Temp * 0.0;

	gl_FragColor = vec4(isnan(Temp));
}

[test]

draw rect -1 -1 2 2
probe rgb 1 1 1.0 1.0 1.0