Im sorry, I meant to say, replacing the sprite with a billboard DOES
NOT render the same output.
Thank you. You are totally right about Core image and GLSL not being
panacea, and I will admit my core OpenGL API knowledge is more than
lacking.
However, the issue is that I need a cropped image, since I am
sending this image/texturing input to something more like a
Billboard. Replacing the Sprite with a Billboard in your patch does
render the same output. The Billboard shows the full image.
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