diff --git a/neercs/video/postfx.lolfx b/neercs/video/postfx.lolfx
index 1effd75..f7f6842 100644
--- a/neercs/video/postfx.lolfx
+++ b/neercs/video/postfx.lolfx
@@ -24,7 +24,7 @@ uniform vec4 moire_h;
 uniform vec4 moire_v;
 uniform vec4 scanline_h;
 uniform vec4 scanline_v;
-uniform vec2 corner;
+uniform vec3 corner;
 uniform float sync;
 
 vec2 screen(in vec2 p,in float radius)
@@ -38,9 +38,9 @@ vec3 get_color(in sampler2D tex,in vec2 p)
 	return texture2D(tex,clamp(p,-1.0,0.0)).xyz;
 	}
 
-float letterbox(in vec2 p,in float radius,in float smooth)
+float letterbox(in vec2 p,in float w,in float radius,in float smooth)
 	{
-	return 1.0-smoothstep(smooth,1.0,length(max(abs(p*2.0+1.0)-vec2(radius),0.0))+radius);
+	return 1.0-smoothstep(smooth,1.0,length(max(abs(p*w+w/2.0)-vec2(radius),0.0))+radius);
 	}
 
 void main(void)
@@ -69,6 +69,6 @@ void main(void)
 	c*=scanline_h.x+scanline_h.y*cos(z.y*float(screen_size.y*scanline_h.z+scanline_h.w));	// scanline h
 	c*=scanline_v.x+scanline_v.y*cos(z.x*float(screen_size.x*scanline_v.z+scanline_v.w));	// scanline v
 	c*=(mask-vignetting);									// vignetting
-	c*=letterbox(z,corner.x,corner.y);						// corner
+	c*=letterbox(z,corner.x+2.0,corner.y,corner.z);			// corner
 	gl_FragColor=vec4(c,1.0);
 	}
\ No newline at end of file
diff --git a/neercs/video/render.cpp b/neercs/video/render.cpp
index 0539338..1b8b0e5 100644
--- a/neercs/video/render.cpp
+++ b/neercs/video/render.cpp
@@ -108,7 +108,7 @@ vec4 postfx_moire_h(0.75f,-0.25f,0.0f,1.0f);    // vertical moire [base,variable
 vec4 postfx_moire_v(0.75f,-0.25f,1.0f,1.5f);    // horizontal moire [base,variable,repeat x,repeat y]
 vec4 postfx_scanline_h(0.75f, 0.25f,0.0f,2.0f); // vertical scanline [base,variable,repeat x,repeat y]
 vec4 postfx_scanline_v(0.75f,-0.25f,2.0f,0.0f); // horizontal scanline [base,variable,repeat x,repeat y]
-vec2 postfx_corner(0.75f,0.95f);      // corner [radius,blur]
+vec3 postfx_corner(0.0f,0.75f,0.95f);           // corner [width,radius,blur]
 /* text variable */
 ivec2 ratio_2d(2,4);            // 2d ratio
 ivec2 map_size(256,256);        // texture map size
@@ -173,11 +173,11 @@ char const *setup_text[] = {
         "enable",
         "deform ratio",
         "zoom base",
+        "corner width",
         "corner radius",
         "corner blur",
         "vignetting",
         "",
-        "",
     "color",
         "filter red",
         "filter green",
@@ -229,8 +229,8 @@ vec4 setup_var[]={ // setup variable [start,end,step,value]
     vec4(0), /* main */
         vec4( 1,  8, 1, ratio_2d.x),
         vec4( 1,  8, 1, ratio_2d.y),
-        vec4( 0, 64, 1, border.x / ratio_2d.x / font_size.x),
-        vec4( 0, 64, 1, border.y / ratio_2d.y / font_size.y),
+        vec4( 0, 16, 1, border.x / ratio_2d.x / font_size.x),
+        vec4( 0, 16, 1, border.y / ratio_2d.y / font_size.y),
         vec4(0),
         vec4(0),
         vec4(0),
@@ -266,11 +266,11 @@ vec4 setup_var[]={ // setup variable [start,end,step,value]
         vec4( 0, 1, 1, 1),
         vec4( 0.0f, 1.0f, 0.05f, postfx_deform.x),
         vec4( 0.5f, 0.7f, 0.01f, postfx_deform.y),
-        vec4( 0.0f, 1.0f, 0.05f, postfx_corner.x),
+        vec4( 0.0f, 4.0f, 0.10f, postfx_corner.x),
         vec4( 0.0f, 1.0f, 0.05f, postfx_corner.y),
+        vec4( 0.0f, 1.0f, 0.05f, postfx_corner.z),
         vec4(-1.0f, 1.0f, 0.10f, postfx_vignetting),
         vec4(0),
-        vec4(0),
     vec4(0), /* color */
         vec4(0.0f, 1.0f, 0.05f, color_filter.x),
         vec4(0.0f, 1.0f, 0.05f, color_filter.y),
@@ -339,9 +339,9 @@ void Render::UpdateVar()
     k += 6; /* screen */
     m_shader_postfx = (setup_var[k].w == 1) ? true : false; k++;
     postfx_deform = vec2(setup_var[k].w, setup_var[k + 1].w); k += 2;
-    postfx_corner = vec2(setup_var[k].w, setup_var[k + 1].w); k += 2;
+    postfx_corner = vec3(setup_var[k].w, setup_var[k + 1].w, setup_var[k + 2].w); k += 3;
     postfx_vignetting = setup_var[k].w; k++;
-    k += 3; /* color */
+    k += 2; /* color */
     color_filter = vec3(setup_var[k].w, setup_var[k + 1].w, setup_var[k + 2].w); k += 3;
     color_color = vec3(setup_var[k].w, setup_var[k + 1].w, setup_var[k + 2].w); k += 3;
     postfx_aberration = setup_var[k].w; k++;