[require]
GLSL >= 1.10

[vertex shader file]
glsl-mvp.vert

[fragment shader]
int exp2(int x)
{
    return x; 
}

void main()
{
    int x = exp2(6);
    gl_FragColor = vec4(0.0, float(x) / 12.0, 0.0, 1.0);
}

[test]
clear color 0.0 0.0 0.0 0.0
clear
ortho
draw rect 10 10 10 10
probe rgb 15 15 0.0 0.5 0.0