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Pixel Color

Started by
3 comments, last by jag_oes 22 years, 2 months ago
Is there a way to determine the color of a pixel? This is being done in 2D in Open GL ... something like "glGetColor (0.0f, 0.0f)" that will return the color of the pixel at (0,0). Or some equivalent? Thanks
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you can use glReadPixel(), but you should really not be using functions like this. if you want to a 2d game use directdraw with a system buffer so reads will be fast. unfortunatly reads from vram are uber slow and video cards are designed for writes to vram not reads.
Awesome, thanks a lot ... what kind of value does that return?
this is where the old RTFM comes into play.
Give me a break ... you could have told me in fewer words than that reply took ...

Thanks anyway.

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