How can I compare the RGB value in pixel? [Archive] - OpenGL Discussion and Help Forums

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suponlyzx

10-23-2005, 11:21 PM

AfterI use gluScaleImage(GL_RGB,...GL_UNSIGNED_BYTE,...,pdata ) to transfer the pixel address into pdata,how can I compare the RGB value in two different pixel?directly using *pdata or something else?But when I attemp to output *pdata value
,the result is a '?',why?

Tom Nuydens

10-26-2005, 05:10 AM

I've told you this before: pretty please DO NOT post questions in both the beginner and advanced forums.