Hi All..
New to OpenGL so please bear with me. I'm trying to create an OpenGL port
in my application to display images--only way to show more than 256 colors
here on our SGIs. I've been having some difficulties:
1.) Any way to scroll via. scrollbars the OpenGL port? (like attaching
to a canvas but that didn't seem to do the trick)
2.) My Images are always offset about 25% up and left using this code:
glLoadIdentity()
gluOrtho2d(0,portWidth,0,portHeight)
glRasterPos2i(0,0)
glDrawPixels(imWid,imHeight, GL_RGBA, GL_UNSIGNED_BYTE, im)
At least I can see the image, but I don't understand where the offset is
coming in. I've looked for a simple "DisplayImage" demo but haven't found
one.
Thanks in advance!
Mark A. McGuire
mcguire@rhythm.com
Rhythm & Hues Studios, Inc.
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New to OpenGL so please bear with me. I'm trying to create an OpenGL port
in my application to display images--only way to show more than 256 colors
here on our SGIs. I've been having some difficulties:
1.) Any way to scroll via. scrollbars the OpenGL port? (like attaching
to a canvas but that didn't seem to do the trick)
2.) My Images are always offset about 25% up and left using this code:
glLoadIdentity()
gluOrtho2d(0,portWidth,0,portHeight)
glRasterPos2i(0,0)
glDrawPixels(imWid,imHeight, GL_RGBA, GL_UNSIGNED_BYTE, im)
At least I can see the image, but I don't understand where the offset is
coming in. I've looked for a simple "DisplayImage" demo but haven't found
one.
Thanks in advance!
Mark A. McGuire
mcguire@rhythm.com
Rhythm & Hues Studios, Inc.
-----------== Posted via Deja News, The Discussion Network ==----------
http://www.dejanews.com/ Search, Read, Discuss, or Start Your Own