How To know if ShaderUtil.GetPropertyType is a Texture2D

Unity Engine
1

Hi guys, so I have this code:

    public List<Texture> GetTextures(Material mat) {
             List<Texture> list = new List<Texture>();
             int count = ShaderUtil.GetPropertyCount(mat.shader);
             for(var i = 0; i < count; i++) {
                 if(ShaderUtil.GetPropertyType(mat.shader, i) == ShaderUtil.ShaderPropertyType.TexEnv) {
                     //if the texture is not null then works, but if its null, how do I know if its a Texture2D this property type?
                     if(mat.GetTexture(ShaderUtil.GetPropertyName(mat.shader, i)) is Texture2D)
                         Debug.Log("Tex2D!");
                     list.Add(mat.GetTexture(ShaderUtil.GetPropertyName(mat.shader, i)));
                 }
             }
             Debug.Log("Textures:" + list.Count + " total properties: " + count);
             return list;
         }

And Im wondering how do I know if a property is a texture2D or a cubemap if the texture assigned is null :S. Any idea? :S

really appreciated!

2

I’ve come up with this solution (that I dont like), anyone knows a better solution?

    public List<Texture> GetTextures(Material mat) {
         List<Texture> list = new List<Texture>();
         int count = ShaderUtil.GetPropertyCount(mat.shader);
         for(var i = 0; i < count; i++) {
             if(ShaderUtil.GetPropertyType(mat.shader, i) == ShaderUtil.ShaderPropertyType.TexEnv) {
                 string propertyName = ShaderUtil.GetPropertyName(mat.shader, i);
                 if(propertyName != "_Cube") {
                     list.Add(mat.GetTexture(propertyName));
                 }
             }
         }
         Debug.Log("Textures:" + list.Count + " total properties: " + count);
         return list;
     }
3

UPDATE:

Her’s how to do it!:

    public List<Texture> GetTextures2D(Material mat) {
         List<Texture> list = new List<Texture>();
         int count = ShaderUtil.GetPropertyCount(mat.shader);
         for(int i = 0; i < count; i++) {
             if(ShaderUtil.GetPropertyType(mat.shader, i) == ShaderUtil.ShaderPropertyType.TexEnv) {
                 if(ShaderUtil.GetTexDim(mat.shader, i) == ShaderUtil.ShaderPropertyTexDim.TexDim2D) {
                     list.Add(mat.GetTexture(ShaderUtil.GetPropertyName(mat.shader, i)));
                 }
             }
         }
         Debug.Log("Textures:" + list.Count + " total properties: " + count);
         return list;
     }
4

I don’t know if it helps at all, but there are a few very basic C# method to work with the Types.

Type type = typeof(GameObject); //For when you need an easy way to get a Type, for calling functions, for example.

Type type2 = "This is my string object".GetType(); // gives you the type used by an instance of that type.

if (randomObject is int){ //Do stuff, my object is an int
    double myIntAsDouble = randomObject as double; // An other way to cast types, with other constraints, use only if you understand it well, as it doesn't throw exceptions when it fails.
}

I hope it helps a bit anyway, with all the Type-centered questions, because it’s a bit unknown and hidden, but can help a lot.

As a note, my int to double, I have no clue if it workd or not, and you won’t either until you try to use that “myIntAsDouble” variable ;).

5

indeed, the issue here is that these types reside in shaders lang, so basically you need a class that interfaces with shaderlab (ShaderUtil) and lets you know what type the var is because when you lets say Get a texture (Material.GetTexture) it will return you a texture (if there is a texture assigned in the inspector in the shader), now if there is no texture it will return null, but I need to know if that null returned is a cubemap or a texture2D!.

The 3rd post is a solution to this :).

Being said that, still thanks a lot! :slight_smile: at least someone replied me :slight_smile: