Weird transparency rendering.

[renatoc8]

Ok, i've come here because i just cannot figure this out by myself, and i was hoping someone here had a solution.

I have a directx engine in the works, and so far everything has been fine, so i finaly decided to give cegui a try, however it seems to do some weird things to the renderer. Bellow are some before and after pictures. Basically it makes some surfaces see-through, or semi-see-through, and you can see either the surface directly behind it or the skybox.

Before:
After:


Before:

After:


I can init cegui fine, and the logs show nothing wrong. The problem apears as soon as the rendering line gets run: CEGUI::System::getSingleton().renderGUI();
One of our programmers suggested this could be a problem with alpha blending or depth test.

[renatoc8]

Ok, granx pointed me towards depth testing, and it turned out to be correct. I just had to enable depth and allow for writing by using:

d3dDevice->SetRenderState(D3DRS_ZENABLE,D3DZB_TRUE);
d3dDevice->SetRenderState(D3DRS_ZWRITEENABLE,true);