diff --git a/Data/User/Shaders/16bit.txt b/Data/User/Shaders/16bit.txt
index 4b4e2dfbff..0be06a95f3 100644
--- a/Data/User/Shaders/16bit.txt
+++ b/Data/User/Shaders/16bit.txt
@@ -1,109 +1,61 @@
-uniform samplerRECT samp0 : register(s0);
+uniform sampler2D samp9;
 
-void main(out float4 ocol0 : COLOR0, in float2 uv0 : TEXCOORD0)
+out vec4 ocol0;
+in vec2 uv0;
+
+uniform vec2 resolution;
+
+void main()
 {
-  float4 c0 = texRECT(samp0, uv0).rgba;
-
   //Change this number to increase the pixel size.
-  int pixelSize = 3;
+  float pixelSize = 3;
 
   float red   = 0.0;
   float green = 0.0;
   float blue  = 0.0;
-  int  val = uv0[0];
-  int val2 = uv0[1];
-
-  val = val % pixelSize;
-  val2 = val2  % pixelSize;
-
- if(val == 0 && val2 == 0  ){
-		 if (c0.r < 0.1 && c0.r >= 0)
-			red = 0.1;
-		 if (c0.r < 0.20 && c0.r >= 0.1)
-			red = 0.20;
-		 if (c0.r <0.40 && c0.r >= 0.20)
-			red = 0.40;
-		 if (c0.r <0.60 && c0.r >= 0.40)
-			red = 0.60;
-		 if (c0.r <0.80 && c0.r >= 0.60)
-			red = 0.80;
-		 if (c0.r >= 0.80)
-			red = 1;
-
-		 if (c0.b < 0.1 && c0.b >= 0)
-			blue = 0.1;
-		 if (c0.b < 0.20 && c0.b >= 0.1)
-			blue = 0.20;
-		 if (c0.b <0.40 && c0.b >= 0.20)
-			blue = 0.40;
-		 if (c0.b <0.60 && c0.b >= 0.40)
-			blue = 0.60;
-		 if (c0.b <0.80 && c0.b >= 0.60)
-			blue = 0.80;
-		 if (c0.b >= 0.80)
-			blue = 1;
-
-
-		 if (c0.g < 0.1 && c0.g >= 0)
-			green = 0.1;
-		 if (c0.g < 0.20 && c0.g >= 0.1)
-			green = 0.20;
-		 if (c0.g <0.40 && c0.g >= 0.20)
-			green = 0.40;
-		 if (c0.g <0.60 && c0.g >= 0.40)
-			green = 0.60;
-		 if (c0.g <0.80 && c0.g >= 0.60)
-			green = 0.80;
-		 if (c0.g >= 0.80)
-			green = 1;
-
-}
-else{
-float4 c1 = texRECT(samp0, uv0-float2(val, val2)).rgba;
-		
-		if (c1.r < 0.1 && c1.r >= 0)
-			red = 0.1;
-		 if (c1.r < 0.20 && c1.r >= 0.1)
-			red = 0.20;
-		 if (c1.r <0.40 && c1.r >= 0.20)
-			red = 0.40;
-		 if (c1.r <0.60 && c1.r >= 0.40)
-			red = 0.60;
-		 if (c1.r <0.80 && c1.r >= 0.60)
-			red = 0.80;
-		 if (c1.r >= 0.80)
-			red = 1;
-
-		 if (c1.b < 0.1 && c1.b >= 0)
-			blue = 0.1;
-		 if (c1.b < 0.20 && c1.b >= 0.1)
-			blue = 0.20;
-		 if (c1.b <0.40 && c1.b >= 0.20)
-			blue = 0.40;
-		 if (c1.b <0.60 && c1.b >= 0.40)
-			blue = 0.60;
-		 if (c1.b <0.80 && c1.b >= 0.60)
-			blue = 0.80;
-		 if (c1.b >= 0.80)
-			blue = 1;
-
-
-		 if (c1.g < 0.1 && c1.g >= 0)
-			green = 0.1;
-		 if (c1.g < 0.20 && c1.g >= 0.1)
-			green = 0.20;
-		 if (c1.g <0.40 && c1.g >= 0.20)
-			green = 0.40;
-		 if (c1.g <0.60 && c1.g >= 0.40)
-			green = 0.60;
-		 if (c1.g <0.80 && c1.g >= 0.60)
-			green = 0.80;
-		 if (c1.g >= 0.80)
-			green = 1;
-			
-}
-
-
   
-  ocol0 = float4(red, green, blue, c0.a);
+  vec2 pos = round(uv0 * resolution / pixelSize) * resolution / pixelSize;
+  
+  vec4 c0 = texture(samp9, uv0);
+
+  if (c0.r < 0.1)
+    red = 0.1;
+  else if (c0.r < 0.20)
+    red = 0.20;
+  else if (c0.r < 0.40)
+    red = 0.40;
+  else if (c0.r < 0.60)
+    red = 0.60;
+  else if (c0.r < 0.80)
+    red = 0.80;
+  else
+    red = 1.0;
+
+  if (c0.b < 0.1)
+    blue = 0.1;
+  else if (c0.b < 0.20)
+    blue = 0.20;
+  else if (c0.b < 0.40)
+    blue = 0.40;
+  else if (c0.b < 0.60)
+    blue = 0.60;
+  else if (c0.b < 0.80)
+    blue = 0.80;
+  else
+    blue = 1.0;
+
+  if (c0.g < 0.1)
+    green = 0.1;
+  else if (c0.g < 0.20)
+    green = 0.20;
+  else if (c0.g < 0.40)
+    green = 0.40;
+  else if (c0.g < 0.60)
+    green = 0.60;
+  else if (c0.g < 0.80)
+    green = 0.80;
+  else
+    green = 1.0;
+  
+  ocol0 = vec4(red, green, blue, c0.a);
 }
\ No newline at end of file
diff --git a/Data/User/Shaders/README.txt b/Data/User/Shaders/README.txt
index 9667f2bcef..6913f9d099 100644
--- a/Data/User/Shaders/README.txt
+++ b/Data/User/Shaders/README.txt
@@ -1,11 +1,14 @@
 //dummy shader:
-uniform samplerRECT samp0 : register(s0);
+uniform sampler2D samp9;
 
-void main(out float4 ocol0 : COLOR0, in float2 uv0 : TEXCOORD0)
+out vec4 ocol0;
+in vec2 uv0;
+
+void main()
 {
-  float4 c0 = texRECT(samp0, uv0).rgba;
-  ocol0 = float4(c0.r, c0.g, c0.b, c0.a);
+  ocol0 = texture(samp9, uv0);
 }
+
 /*
 And now that's over with, the contents of this readme file!
 For best results, turn Wordwrap formatting on...
diff --git a/Source/Plugins/Plugin_VideoOGL/Src/PostProcessing.cpp b/Source/Plugins/Plugin_VideoOGL/Src/PostProcessing.cpp
index acf1019350..3be735e612 100644
--- a/Source/Plugins/Plugin_VideoOGL/Src/PostProcessing.cpp
+++ b/Source/Plugins/Plugin_VideoOGL/Src/PostProcessing.cpp
@@ -40,7 +40,9 @@ static GLuint s_texture;
 static GLuint s_vao;
 static GLuint s_vbo;
 
-static char* s_vertex_shader =
+static GLuint s_uniform_resolution;
+
+static char s_vertex_shader[] =
 	"in vec2 rawpos;\n"
 	"in vec2 tex0;\n"
 	"out vec2 uv0;\n"
@@ -113,6 +115,9 @@ void BlitToScreen()
 	
 	glBindVertexArray(s_vao);
 	s_shader.Bind();
+	
+	glUniform2f(s_uniform_resolution, (float)s_width, (float)s_height);
+	
 	glActiveTexture(GL_TEXTURE0+9);
 	glBindTexture(GL_TEXTURE_2D, s_texture);
 	glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
@@ -168,6 +173,9 @@ void ApplyShader()
 		return;
 	}
 	
+	// read uniform locations
+	s_uniform_resolution = glGetUniformLocation(s_shader.glprogid, "resolution");
+	
 	// successful
 	s_enable = true;
 }