Hey Ykkrosh, I have tried to set the following code in CCamera::SetProjection. (I'm calculating the l,r,b,t values from the ViewPort-width/height) float w = m_ViewPort.m_Width; float h = m_ViewPort.m_Height; float r = w/2; float l = -r; float b = h/2; float t = -b; float n = nearp; float f = farp; // orthographic matrix m_ProjMat._11 = 1/r; m_ProjMat._22 = 1/t; m_ProjMat._33 = -2/(f-n); m_ProjMat._34 = -((f+n)/(f-n)); m_ProjMat._44 = 1.0f; and in CCamera::GetCameraPlanePoints float w = m_ViewPort.m_Width; float h = m_ViewPort.m_Height; float x = w/2; float y = h/2; but this doesn't work. I can't see the terrain. Any ideas whats wrong? Is someone else in your team, who can help me with this? It drives me crazy