Fixed flipped reflection and skybox on x-axis, enable anisotropy (Fixes #232)

data/shaders/cubemap/reflect.frag

@@ -20,6 +20,7 @@ void main()
 	vec3 cR = reflect (cI, normalize(inNormal));
 
 	cR = vec3(inInvModelView * vec4(cR, 0.0));
+	cR.x *= -1.0;
 
 	vec4 color = texture(samplerColor, cR, inLodBias);
 
@@ -31,5 +32,4 @@ void main()
 	vec3 diffuse = max(dot(N, L), 0.0) * vec3(1.0);
 	vec3 specular = pow(max(dot(R, V), 0.0), 16.0) * vec3(0.5);
 	outFragColor = vec4(ambient + diffuse * color.rgb + specular, 1.0);		
-
 }