Fix Fitness

- compare both textures with the same side up
- load target from the filename passed to the function

compare.glsl

@@ -16,16 +16,16 @@ void main(void)
 	if (horizontal) {
 		float posy = gl_FragCoord.y/size.y;
 		for (float x=0.0; x<=1.0; x+=(1.0/size.x)) {
-			vec4 color     = texture2D(curr, vec2(x,     posy));
+			vec4 color     = texture2D(curr, vec2(x, posy));
-			vec4 basecolor = texture2D(base, vec2(x, 1.0-posy));
+			vec4 basecolor = texture2D(base, vec2(x, posy));
 			color.rgb = abs(color.rgb - basecolor.rgb);
 			total = total + color.r + color.g + color.b;
 		}
 	} else {
 		float posx = gl_FragCoord.x/size.x;
 		for (float y=0.0; y<=1.0; y+=(1.0/size.y)) {
-			vec4 color     = texture2D(curr, vec2(posx,     y));
+			vec4 color     = texture2D(curr, vec2(posx, y));
-			vec4 basecolor = texture2D(base, vec2(posx, 1.0-y));
+			vec4 basecolor = texture2D(base, vec2(posx, y));
 			color.rgb = abs(color.rgb - basecolor.rgb);
 			total = total + color.r + color.g + color.b;
 		}

src/Fitness.cpp

@@ -55,7 +55,7 @@ bool Fitness::loadTarget(std::string filename)
 	
 	// load the image
 	sf::Texture tex;
-	if (!tex.loadFromFile("tom-face.png")) {
+	if (!tex.loadFromFile(filename)) {
 		return false;
 	}