Trouble animating Canvas Image UVs on Android

Questions & Answers
1

I have a number of animated banners that have to animate indefinitely in one direction.

I have run into a number of problems, including animating an Image’s material effects all materials in the canvas, if Images share a material instance they all fight over the UVs etc. etc… So I have made a script to make a material at runtime and apply it, then only effect that material. This works in Editor but not on Mobile.

[RequireComponent(typeof(Image))]
    public class UV_Scroller : MonoBehaviour
    {
        public Vector2 uvAnimationRate = new Vector2( 1.0f, 0.0f ); 
        private Vector2 uvOffset = Vector2.zero;
        private Image _image;                                       
        private Material _mat;                                      

        private void Start() 
        {
            _image = gameObject.GetComponent<Image>();
            _mat = new Material(Shader.Find("Unlit/Transparent"));
            _image.material = _mat;
        }
        void Update() 
        {
            uvOffset += ( uvAnimationRate * Time.deltaTime );
            _mat.SetTextureOffset(textureName, uvOffset);           

        }
    }

I have also ensured the shader is listed in the graphics settings as detailed here: Unity Forum post

Any help would be most appreciated

2

I may have solved the immediate issue of the graphics being missing on Android builds, I changed the shader I was creating to :

new Material(Shader.Find("UI/Unlit/Transparent"));

and now android has scrolling banners.

Follow up question then, is this performant, and is there any risk of memory leaks from making these dynamic materials?

Best, Steve