Hey! I've made an implementation of SMAA for Unity, check it out! Waiting for your opinions https://github.com/m10914/SMAA-Unity
AreaTexture.cs and SMAA.shader both don't compile in Unity 3.5.6f4 Code (csharp): Shader error in '': GLSL vertex shader: ERROR: 0:351: 'round' : no matching overloaded function found at line 157 Code (csharp): Assets/Standard Assets/SMAA/AreaTexture.cs(23,26): error CS1061: Type `UnityEngine.Texture2D' does not contain a definition for `alphaIsTransparency' and no extension method `alphaIsTransparency' of type `UnityEngine.Texture2D' could be found (are you missing a using directive or an assembly reference?)
Ah, forgot to mention, it's for Unity Pro 4+ only, impossible for me to download older versions and implement for them too Though, these problems are quite easy to overcome - just remove alphaIsTransparency line and make #define round(x) floor(x + 0.5) in shaders. Should work