Draw drop shadow in Cocos2d/OpenGLES on iPhone
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I need to draw a round, 2D drop shadow in the -draw method of a CCNode subclass I wrote. I've Googled this, but no one has an adequate solution. I am drawing the CCNode as two concentric circles using glVertexPointer and glDrawArrays by setting the point size and simply drawing a point with a color. I just need a way to draw a blurred circle or radial gradient behind the two concentric circles as a shadow without sacrificing too much performance. Any help is greatly appreciated. Thanks!