uniform sampler2D tex_def;
uniform lowp sampler2D tex_lowp;
uniform highp sampler2D tex_highp;
varying lowp vec2 var_lowp;
varying mediump vec2 var_mediump;
void main()
{
	lowp vec4 c1;
	c1 = texture2D (tex_def, var_lowp) * 2.0;
	lowp vec4 c2;
	c2 = texture2D (tex_def, var_mediump) * 2.0;
	lowp vec4 c3;
	c3 = texture2D (tex_highp, var_mediump) * 2.0;
	lowp vec4 c4;
	c4 = texture2D (tex_lowp, var_mediump) * 2.0;
	
	lowp vec4 a1;
	a1 = abs(var_lowp.xxxx);
	
	gl_FragColor = c1 + c2 + c3 + c4 + a1;
}
