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pion
12-06-2010, 10:14 PM
I am reading Chapter 8 "Drawing Pixels, Bitmaps, Fonts and Images" of the red book OpenGL Programming Guide (5th edition).

I'd like to do the following:
1. Read a typical internet image (gif, jpg, png, etc)
2. Display it on WebGL
3. Do some manipulations on the image
4. Read back the new (manipulated) image
5. Save the new image into gif, jpg or png

Where can I find a sample code and/or document to do (some of the) above?

Thanks in advance for your help.