[no bug]OpenGL problems with newest AMD drivers

[csg]

Hi Guys,

I've updated my AMD Cataclyst today and got some errors ( z-buffer? ) in my programs. I'm using a Radeon HD 7770.



Objects close to each other seems to be racing in the zbuffer. The marked areas are moving, if the camera translates.
Nothing changed in my code and all was okay with the older drivers. I've tested it and got the same errors in the Irrlicht examples.



this only happens with openGL, direct3d works just fine as before. I'm using Irrlicht 1.8.1 under Windows 8.1

Any ideas?

[christianclavet]

Seen that problem with Intel drivers often. It's a clipping problem probably caused with the depth buffer (or zbuffer). ATI (also is Intel) is really bad in OPENGL on Windows, they put their full attention on DirectX first then look later at GL. You should also report this to AMD.

[Nadro]

Irrlicht uses 16 bit ZBuffer by default (SIrrlichtCreationParameters). We should change that to 24 and all will work properly.

[csg]

Indeed, changing the ZBuffer bits to 24 fixes the problem. Thanks!

[Nadro]

I changed default value for ZBuffer from 16 to 24 in trunk.