How can I compare the RGB value in pixel?

suponlyzx · October 23, 2005, 11:21pm

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 · October 26, 2005, 5:10am

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