Multisampling fail

OpenGL OpenGL: Advanced Coding
1

I need the best possible image quality in my app. Speed is not such an issue. So, multisampling seems like a good bet. Only no intel cards support multipling ? Seriously …

Next on my nvidia 9800, for some reason I can’t disable multisampling. When I disable it, it seems to reduce it to (i’m guessing 4x).

Screenshots:

704×692 98.8 KB

616×689 95.3 KB

http://i126.photobucket.com/albums/p95/dukeeeey/gfx%20stuff/lion16xx.png
http://i126.photobucket.com/albums/p95/dukeeeey/gfx%20stuff/lion16x.png

Now I really need multisampling disabled because I wrote object picking code that reads the colour off the back buff to determine which object has been selected. I think multisampling will destroy this.

2

Looks similar to this :
http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=278722

EDIT : And this discussion seem to provide fixes towards the end :
http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=253897

3

My Tip: For picking, just use a 1x1 pixel sized offscreen non-multisampled FBO.

4

I tried 8x anti aliasing. With that when you disable multisampling it is actually disabled it seems.