Can I use OpenGL without specifying a window

Graphics and GPU Programming Programming OpenGL

Started by pango99 May 26, 2003 01:16 PM

2 comments, last by pango99 20 years, 10 months ago

122

Author

May 26, 2003 01:16 PM

I want to write a video transition program using OpenGL,and there is no need a window to show the image rendered by OpenGL,so is it possible to initializing a OpenGL working environment without specifying a window?If it is,how to implement it?

fsdf

_the_phantom_

11,263

May 26, 2003 01:25 PM

this is just a shot in the dark as i''m not sure 100% how you set these up, but try looking into a pbuffer as these are offscreen buffers.
I dunno if you need to have an active context to make one however.

theNestruo

138

May 26, 2003 01:44 PM

Take a look at the dwFlags fields in the PIXELFORMATDESCRIPTOR structure (more specifically, the PFD_DRAW_TO_BITMAP bit flag).

theNestruo

Syntax error in 2410
Ok

theNestruoSyntax error in 2410Ok

Jallen

122

May 26, 2003 02:29 PM

Yes, you need a window if you want hardware accelerated OpenGL. You can create a window and then just not display it on the screen and just use pbuffers for all your rendering.

---I write code.DelphiGL (http://delphigl.cfxweb.net)