it doesn`t` change material! why? please help me!

Please describe the issue, or upload your code to some other place where it can be easily displayed (e.g. paste it into gist.github.com).

https://gist.github.com/3147687

I flow your advice,pased it .someone can help me?

Let me guess, it only shows the first frame?

Unless I’m mistaken, you can’t use the clipRect property of BitmapData.draw() that way. Have a look at this Stack Overflow question: http://stackoverflow.com/questions/1880601/does-cliprect-parameter-of-the-bitmapdata-draw-method-really-clips-the-source

You should probably be using copyPixels() instead if you want to do what you are doing.

But then you probably shouldn’t be doing what you’re doing at all, because it effectively uploads a new texture to the GPU every frame. You also create a new material every frame, and never dispose the old one or the texture, so after a minute or so you should be running out of texture resources and start getting errors thrown at you.

The correct way to create something like this is to apply your animation strip (the large image with all the frames) as the texture to your object. Then scale the object’s UV coordinates so that they only map to one frame (i.e. set SubMesh.scaleU to 1/numFrames) and then offset the U every frame using SubMesh.offsetU. Also set animateUVs to true on the material to have it respect the UV transform.

That way you’re not sending any unnecessary information to the GPU every frame.