[require]
GLSL >= 1.10

[vertex shader]
void main()
{
	gl_Position = gl_Vertex;
}

[fragment shader]

vec4 color;

float func()
{
	color = vec4(0.0, 1.0, 0.0, 0.0);
	return 0.0;
}

void main()
{
	float f;
	color = vec4(1.0, 0.0, 0.0, 0.0);
	f = func();
	gl_FragColor = color;
}

[test]
draw rect -1 -1 2 2
probe rgb 1 1 0.0 1.0 0.0