Cleaning up shader

assets/shaders/engine/editorBlurFast.frag

@@ -2,19 +2,12 @@
 
 // Used for editors (faster)
 
-//#define iResolution _camSize
-#define getTexture textureCam
-
-#define iResolution openfl_TextureSize
-//#define getTexture flixel_texture2D
-
-float uBlur = 0.015;
-float uBrightness = 0.6;
+const float uBlur = 0.015;
+const float uBrightness = 0.6;
 
 vec4 getColor(vec2 pos) {
-	vec2 ps = (pos);
-	ps = clamp(ps, vec2(0.0), vec2(1.0));//1.0 - (1.0 / iResolution.xy));
-	return flixel_texture2D(bitmap, (ps));
+	pos = clamp(pos, vec2(0.0), vec2(1.0));//1.0 - (1.0 / openfl_TextureSize.xy));
+	return flixel_texture2D(bitmap, pos);
 }
 
 uniform sampler2D noiseTexture;
@@ -22,20 +15,16 @@ uniform vec2 noiseTextureSize;
 
 vec2 random(vec2 p) {
 	p *= openfl_TextureSize;
-    return texture2D(noiseTexture, p/noiseTextureSize).rg;
+    return texture2D(noiseTexture, p / noiseTextureSize).rg - vec2(0.5);
 }
 
 void main() {
-	vec2 camPos = (openfl_TextureCoordv);
-	//vec2 camPos = openfl_TextureCoordv;
-	if (camPos.x < 0.0 || camPos.x > 1.0 || camPos.y < 0.0 || camPos.y > 1.0)
-		return;
+	vec2 camPos = openfl_TextureCoordv;
+	vec2 blur = vec2(uBlur) * vec2(1.0, openfl_TextureSize.x / openfl_TextureSize.y);
 
-	vec2 blur = vec2(uBlur) * vec2(1.0, iResolution.x / iResolution.y);
-
-	vec4 a = getColor(camPos+(random(camPos)*blur - blur / 2.0)) * uBrightness;
-	a += getColor(camPos+(random(camPos+0.1)*blur - blur / 2.0)) * uBrightness;
-	//a += getColor(camPos+(random(camPos+0.2)*blur - blur / 2.0)) * uBrightness;
-	//a += getColor(camPos+(random(camPos+0.3)*blur - blur / 2.0)) * uBrightness;
-	gl_FragColor = a / 2.0;
+	vec4 a =	getColor(camPos+random(camPos)*blur);
+	a +=		getColor(camPos+random(camPos+0.1)*blur);
+	//a +=		getColor(camPos+random(camPos+0.2)*blur);
+	//a +=		getColor(camPos+random(camPos+0.3)*blur);
+	gl_FragColor = (a / 2.0) * uBrightness;
 }