use resolution for feather values

effects/shaders/crop.frag

@@ -3,6 +3,7 @@ uniform float top;
 uniform float right;
 uniform float bottom;
 uniform float feather;
+uniform vec2 resolution;
 
 uniform mediump float amount_val;
 
@@ -15,23 +16,26 @@ vec4 process(vec4 col) {
 			alpha = 0.0;
 		}
 	} else {
-		float f = pow(2.0, 10.0-(feather*0.1));
+
+		float f = pow(2.0, 10.0-(feather*0.25));
 
 		if (left > 0.0) {
-			alpha *= clamp(((v_texcoord.x+(0.5/f))-(left*0.01))*f, 0.0, 1.0); // left
+			alpha *= clamp(((resolution.x*v_texcoord.x+(0.5/f))-(left*0.01*resolution.x))*f, 0.0, 1.0); // left
 		}
 
 		if (top > 0.0) {
-			alpha *= clamp(((v_texcoord.y+(0.5/f))-(top*0.01))*f, 0.0, 1.0); // top
+			alpha *= clamp(((resolution.y*v_texcoord.y+(0.5/f))-(top*0.01*resolution.y))*f, 0.0, 1.0); // top
 		}
 
 		if (right > 0.0) {
-			alpha *= clamp((((1.0-v_texcoord.x)+(0.5/f))-(right*0.01))*f, 0.0, 1.0); // right
+			alpha *= clamp(((resolution.x*(1.0-v_texcoord.x)+(0.5/f))-(right*0.01*resolution.x))*f, 0.0, 1.0); // right
 		}
 
 		if (bottom > 0.0) {
-			alpha *= clamp((((1.0-v_texcoord.y)+(0.5/f))-(bottom*0.01))*f, 0.0, 1.0); // bottom
+			alpha *= clamp(((resolution.y*(1.0-v_texcoord.y)+(0.5/f))-(bottom*0.01*resolution.y))*f, 0.0, 1.0); // bottom
 		}
+
+
 	}
 
 	return col * alpha;