Question

How to store Effect parameters in class ?
I’m stuck in this problem for the 3rd day now and I think I’m slowly going to be insane.

I tried to create a class named EffectParameter so I can store/set my parameter values for each object’s shader dynamically.

I tried the to store the ParameterValue in Object type

Object ParameterData;

But I encountered a problem where I need to read from this class….this is where everything going down in the hill.

The method effect.Parameters["parametername"].SetValue() only accept a few kind of types.
And I cannot pass an object to this method.

So I tried to Cast this object.

public T ReadData<T>()
{
    return (T)(object)this.ParameterDataVal;
}

But with this my problem is that I need to know the specific type of this object when I set it (Float,Texture2D etc.)

And I cannot use a type variable to determine the type of this object.
I tried to use (typevariable)(object)this.ParameterDataVal;
But it just gave me errors.

I was mad,so I searched the net for solution for dynamic typing.
But I found no method for my problem.

Then I realized maybe I’m making problems of a simple thing.
So I decided to I use an EffectParameter to store my data.

But then I had another problem with this, again when I try to set this data to the effect….
So I tried to give this Parameter to the effect with a method,but I still getting error that ‘It’s readonly.’.

So I cannot add my EffectParameter to the collection.
I tried many ways. But no success.

I’m totally lost in this. I have no idea what else to do.

Anybody ever encountered this problem or somebody can provide me a good solution plan?

Answer 1

The solution’s class:

    public class ObjectShader
    {

        public Effect effect;

        public System.Drawing.Image TextureImage;

        public string ShaderName;

        string TechniqueName;


            public ObjectShader(string name,Effect ef)
            {
                this.ShaderName = name;
                this.effect = ef;


            }


            public void SetValue(string name, System.Drawing.Image val)
            {
                this.TextureImage = val;

            }



            public void SetValue(string name,float val)
            {
                this.effect.Parameters[name].SetValue(val);

            }

            public void SetValue(string name, float[] val)
            {
                this.effect.Parameters[name].SetValue(val);

            }


            public void SetValue(string name, string val)
            {
                this.effect.Parameters[name].SetValue(val);

            }

            public void SetValue(string name, Matrix val)
            {
                this.effect.Parameters[name].SetValue(val);

            }

            public void SetValue(string name, Matrix[] val)
            {
                this.effect.Parameters[name].SetValue(val);

            }

            public void SetValue(string name, Vector2 val)
            {
                this.effect.Parameters[name].SetValue(val);

            }

            public void SetValue(string name, Vector2[] val)
            {
                this.effect.Parameters[name].SetValue(val);

            }

            public void SetValue(string name, Vector3 val)
            {
                this.effect.Parameters[name].SetValue(val);

            }

            public void SetValue(string name, Vector3[] val)
            {
                this.effect.Parameters[name].SetValue(val);

            }

            public void SetValue(string name, int val)
            {
                this.effect.Parameters[name].SetValue(val);

            }
            public void SetValue(string name, int[] val)
            {
                this.effect.Parameters[name].SetValue(val);

            }


    }
}