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Quick Grayscale Tutorial

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Yeong:
As in the concept? Think of buffers as two sheets of semi-transparent papers stacked together. If something is located on the both sheets, it will look the darkest (black). If there is nothing on both sheets, well, then there won't be anything (white). For greys, things drawn only on the back sheet will look lighter than the things only drawn on the front sheet because the paper is semi-transparent, right?

Therefore
* drawn on both front and back - black
* drawn on neither - white
* drawn on front only - darker gray
* drawn on back only - lighter gray

TIfanx1999:
O_o Yeong actually reappeared and posted? Wow!

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