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		var color2:Vec4 = vec4(0);

		var uvx:Float = uv.x;
		var uvy:Float = uv.y;
		var s9dx:Float = s9d.x;
		var s9dy:Float = s9d.y;
		var s9dz:Float = s9d.z;
		var s9dw:Float = s9d.w;
		var sizex:Float = size.x;
		var sizey:Float = size.y;

		// 左上
		// if (uv.x &lt;= s9d.x &amp;&amp; uv.y &lt;= s9d.z) {
		var if1:Float = step(uvx, s9dx);
		var if2:Float = step(uvy, s9dy);
		color2 += texture2Dgery( getUv(uvx, uvy)) * if1 * if2;
		// 右上
		// } else if (uv.x &gt;= size.x - s9d.y &amp;&am