float4 main(uniform float alpha_value,
			uniform float time
) : COLOR
{
   float4 color;
   color.x = 1.0;
   color.y = 1.0;
   color.z = 0.0;
   color.w =  alpha_value * ((sin(time * 5.0) / 3.14 + 1.0) / 2.0 );
   return color;
    
 
}