local res = inputs[1]
        local t = inputs[2]
        local uv = div2(coord, res)
        uv.x = uv.x * res.x/res.y--*2/3
        uv.x = uv.x - res.x/res.y/2--*2/3/2
        uv.y = uv.y - 0.5
        local m = getRotMat2(t)
        local uv = mat2mulvec2(m, sub2(uv, vec2(0, 0)))
        return vec4((uv.x % 0.4)*5*(sin(t)+1)/2, (uv.y % 0.2)*5*(cos(t)+1)/2, 0, 1)