diff --git a/sgsr/v1/include/glsl/sgsr1_shader_mobile.frag b/sgsr/v1/include/glsl/sgsr1_shader_mobile.frag
index 7074999..69927af 100644
--- a/sgsr/v1/include/glsl/sgsr1_shader_mobile.frag
+++ b/sgsr/v1/include/glsl/sgsr1_shader_mobile.frag
@@ -1,4 +1,4 @@
-#version 300 es
+#version 320 es
 
 //============================================================================================================
 //
@@ -63,9 +63,9 @@ vec2 weightY(float dx, float dy,float c, float std)
 
 void main()
 {
-	int mode = OperationMode;
-	float edgeThreshold = EdgeThreshold;
-	float edgeSharpness = EdgeSharpness;
+	const int mode = OperationMode;
+	const float edgeThreshold = EdgeThreshold;
+	const float edgeSharpness = EdgeSharpness;
 
 	vec4 color;
 	if(mode == 1)
@@ -93,10 +93,10 @@ void main()
 		{
 			coord.x += ViewportInfo[0].x;
 
-			vec4 right = textureGather(ps0,coord + highp vec2(ViewportInfo[0].x, 0.0), mode);
+			vec4 right = textureGather(ps0,coord + vec2(ViewportInfo[0].x, 0.0), mode);
 			vec4 upDown;
-			upDown.xy = textureGather(ps0,coord + highp vec2(0.0, -ViewportInfo[0].y),mode).wz;
-			upDown.zw  = textureGather(ps0,coord+ highp vec2(0.0, ViewportInfo[0].y), mode).yx;
+			upDown.xy = textureGather(ps0,coord + vec2(0.0, -ViewportInfo[0].y),mode).wz;
+			upDown.zw  = textureGather(ps0,coord+ vec2(0.0, ViewportInfo[0].y), mode).yx;
 
 			float mean = (left.y+left.z+right.x+right.w)*0.25;
 			left = left - vec4(mean);
diff --git a/sgsr/v1/include/glsl/sgsr1_shader_mobile_edge_direction.frag b/sgsr/v1/include/glsl/sgsr1_shader_mobile_edge_direction.frag
index d2df646..1f1daa6 100644
--- a/sgsr/v1/include/glsl/sgsr1_shader_mobile_edge_direction.frag
+++ b/sgsr/v1/include/glsl/sgsr1_shader_mobile_edge_direction.frag
@@ -1,4 +1,4 @@
-#version 300 es
+#version 320 es
 
 //============================================================================================================
 //
@@ -124,10 +124,10 @@ void main()
 		{
 			coord.x += ViewportInfo[0].x;
 
-			vec4 right = textureGather(ps0,coord + highp vec2(ViewportInfo[0].x, 0.0), OperationMode);
+			vec4 right = textureGather(ps0,coord + vec2(ViewportInfo[0].x, 0.0), OperationMode);
 			vec4 upDown;
-			upDown.xy = textureGather(ps0,coord + highp vec2(0.0, -ViewportInfo[0].y),OperationMode).wz;
-			upDown.zw  = textureGather(ps0,coord+ highp vec2(0.0, ViewportInfo[0].y), OperationMode).yx;
+			upDown.xy = textureGather(ps0,coord + vec2(0.0, -ViewportInfo[0].y),OperationMode).wz;
+			upDown.zw  = textureGather(ps0,coord+ vec2(0.0, ViewportInfo[0].y), OperationMode).yx;
 
 			float mean = (left.y+left.z+right.x+right.w)*0.25;
 			left = left - vec4(mean);