Fast Extend library — Thread 2

Blitz3D Forums/Blitz3D Userlibs/Fast Extend library — Thread 2

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 #1
The program runs, but it doen't do any feedback effect, just a white frame turning and zooming in and out, but no feedback.

Is this the instruction supposed to do the feedback?
	CopyRectStretch 0,0,GraphicsWidth(),GraphicsHeight(),0,0,TextureWidth(t),TextureHeight(t),BackBuffer(),TextureBuffer(t)