RTT OpenGL produces only stripes

jreuschel1 · Post by **jreuschel1** » Thu Mar 27, 2008 4:19 pm

I am trying to render a skybox from distant objects to speed up rendering but when i render to texture, i get only a few stripes of non-background color with OpenGL, only background color with Direct3D, and it works with Burinngsvideo. but very low detail.

I am rendering only Billboard objects onto a texture at this stage.

Can anyone help?

hybrid · Post by **hybrid** » Thu Mar 27, 2008 7:56 pm

Both D3D and OpenGL RTTs have some problems which wait for application of patches: D3D RTTs must not be larger than the device, and OpenGL has sometimes only vertical stripes (for an unknown reason, but I hope that it will be fixed with the renderbuffer patch).

jreuschel1 · Post by **jreuschel1** » Thu Mar 27, 2008 9:24 pm

thanks for the quick reply, I was begining to think it was my single computer with this problem with everyone in the forums talking about how opengl flips horizontally. btw, my openGL driver->getName()==2.1.1

hybrid · Post by **hybrid** » Thu Mar 27, 2008 11:06 pm

Yes, many OpenGL drivers don't support FBOs, and then this artifact never occurs. But even with FBO support you can get correctly working versions. I'm simply not able to tell the actual cause of the problem, no OpenGL debugger did find any problems, yet. And the specs also didn't show any problematic things.

Irrlicht Engine

RTT OpenGL produces only stripes

RTT OpenGL produces only stripes

Thanks