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I want to draw a 2D array of pixel data (RGB / grayscale values) on the screen as fast as possible, using OpenGL. The pixel data changes frequently.
I had hoped that I would find a simple function that would let me push in a pointer to an array representing the pixel data, since this is probably the fastest approach. Unfortunately, I have found no such function.
What is the best way to accomplish this task?
Maybe glDrawPixels is the function you are looking for? Though if the data is static it would be better to create a texture with it, and then draw that each frame.