shaders and editor optimizations

source/ShaderShader.hx

@@ -0,0 +1,41 @@
+import flixel.system.FlxAssets;
+
+class ShaderShader extends FlxShader
+{
+    @:glFragmentSource('
+    #pragma header
+    uniform float fade;
+    
+    varying vec4 color;
+    varying vec2 textureCoord;
+    varying vec2 textureSize;
+    uniform sampler2D sampler0;
+    
+    float luma(vec3 color) {
+        return dot(color, vec3(0.299, 0.587, 0.114));
+    }
+    
+    vec3 rgb(float r, float g, float b) {
+        return vec3(r/255.0,g/255.0,b/255.0);
+    }
+    
+    void main()
+    {
+        vec2 uv = textureCoord;
+        
+        vec3 col = texture2D( sampler0, uv ).rgb;
+        float bright=floor(luma(col+0.4)*4.0)/4.0;
+        
+        vec3 newcol;
+        if (bright<0.3) newcol = 	  rgb(54.0,87.0,53.0);
+        else if (bright<0.6) newcol = rgb(128.0,128.0,0.0);
+        else newcol = 				  rgb(157.0,187.0,97.0);
+        gl_FragColor = vec4( newcol*(fade)+col*(1.0-fade), 1.0 ) * color;
+    }
+    ')
+
+    public function new()
+    {
+        super();
+    }
+}