diff --git a/Assets/uDesktopDuplication/Scripts/Texture.cs b/Assets/uDesktopDuplication/Scripts/Texture.cs
index 2f5ba05..b3a5379 100644
--- a/Assets/uDesktopDuplication/Scripts/Texture.cs
+++ b/Assets/uDesktopDuplication/Scripts/Texture.cs
@@ -55,6 +55,12 @@ public class Texture : MonoBehaviour
         } else {
             material_.DisableKeyword("INVERT_Y");
         }
+
+        if (monitor.isVertical) {
+            material_.EnableKeyword("VERTICAL");
+        } else {
+            material_.DisableKeyword("VERTICAL");
+        }
     }
 }
 
diff --git a/Assets/uDesktopDuplication/Shaders/uDD_Common.cginc b/Assets/uDesktopDuplication/Shaders/uDD_Common.cginc
index 64f8173..dcf294c 100644
--- a/Assets/uDesktopDuplication/Shaders/uDD_Common.cginc
+++ b/Assets/uDesktopDuplication/Shaders/uDD_Common.cginc
@@ -11,6 +11,11 @@ inline void uddInvertUV(inout float2 uv)
 #ifdef INVERT_Y
     uv.y = 1.0 - uv.y;
 #endif
+#ifdef VERTICAL
+    float2 tmp = uv;
+    uv.x = tmp.y;
+    uv.y = 1.0 - tmp.x;
+#endif
 }
 
 inline fixed4 uddGetTexture(sampler2D tex, float2 uv)
diff --git a/Assets/uDesktopDuplication/Shaders/uDD_Standard.shader b/Assets/uDesktopDuplication/Shaders/uDD_Standard.shader
index 9c80e7f..930d032 100644
--- a/Assets/uDesktopDuplication/Shaders/uDD_Standard.shader
+++ b/Assets/uDesktopDuplication/Shaders/uDD_Standard.shader
@@ -19,6 +19,7 @@ SubShader
     #pragma surface surf Standard fullforwardshadows
     #pragma multi_compile ___ INVERT_X
     #pragma multi_compile ___ INVERT_Y
+    #pragma multi_compile ___ VERTICAL
 
     #include "./uDD_Common.cginc"
 
diff --git a/Assets/uDesktopDuplication/Shaders/uDD_Unlit.shader b/Assets/uDesktopDuplication/Shaders/uDD_Unlit.shader
index 40516af..578a92c 100644
--- a/Assets/uDesktopDuplication/Shaders/uDD_Unlit.shader
+++ b/Assets/uDesktopDuplication/Shaders/uDD_Unlit.shader
@@ -55,6 +55,7 @@ Pass
     #pragma fragment frag
     #pragma multi_compile ___ INVERT_X
     #pragma multi_compile ___ INVERT_Y
+    #pragma multi_compile ___ VERTICAL
     ENDCG
 }
 
diff --git a/Assets/uDesktopDuplication/Shaders/uDD_Unlit_BlackMask.shader b/Assets/uDesktopDuplication/Shaders/uDD_Unlit_BlackMask.shader
index fbbbf96..f72bc30 100644
--- a/Assets/uDesktopDuplication/Shaders/uDD_Unlit_BlackMask.shader
+++ b/Assets/uDesktopDuplication/Shaders/uDD_Unlit_BlackMask.shader
@@ -62,6 +62,7 @@ Pass
     #pragma fragment frag
     #pragma multi_compile ___ INVERT_X
     #pragma multi_compile ___ INVERT_Y
+    #pragma multi_compile ___ VERTICAL
     ENDCG
 }
 
diff --git a/Assets/uDesktopDuplication/Shaders/uDD_Unlit_Transparent.shader b/Assets/uDesktopDuplication/Shaders/uDD_Unlit_Transparent.shader
index 56cc858..d6217be 100644
--- a/Assets/uDesktopDuplication/Shaders/uDD_Unlit_Transparent.shader
+++ b/Assets/uDesktopDuplication/Shaders/uDD_Unlit_Transparent.shader
@@ -58,6 +58,7 @@ Pass
     #pragma fragment frag
     #pragma multi_compile ___ INVERT_X
     #pragma multi_compile ___ INVERT_Y
+    #pragma multi_compile ___ VERTICAL
     ENDCG
 }