[Mesa-users] HELP WITH OSMESA LIBRARY
brianp at vmware.com
Wed Nov 30 06:16:46 PST 2011
On 11/30/2011 07:00 AM, Urbano Alves wrote:
> Sorry by this email and question.
> Anyway thanks.
> Well, I have a program in C++ and with some openGL libraries (GLUT and
> This program make some statistical calculation like cluster analysis.
> Some of them are a very large picture.
> They are more bigger than the screen size.
> Well, we can talk about 2000x5000 pixel.
> If the picture size is less than screen size no problem,
> the program work and can save a PNG file.
> But, if the picture size is bigger than the screen size I can't save it.
> AND I NEED THIS PICTURES.
Are you using Linux or Windows or something else?
If you're trying to create a window that's larger than the screen,
there's no guarantee the the off-screen portions will be valid (with X
Have you tried using a framebuffer object?
> Well I think the osmesa.h library can help.
> and I try it, and it don't work. No error, but the buffer are empty
> (fill with zero).
> Well some idea?
Hard to say what's going wrong without seeing some code. Do the
sample OSmesa demos work for you?
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