339     NW_ASSERT(resSkeleton.IsValid());  in SetModelMatrixForSkeletalModel()
447         NW_ASSERT(description.IsValid());  in ActivateShaderProgram()
455             if ( previousDescription.IsValid() &&  in ActivateShaderProgram()
527         NW_ASSERT(this->m_SceneEnvironment.GetActiveFog()->GetResFog().IsValid());  in ActivateFog()
528         NW_ASSERT(this->m_SceneEnvironment.GetActiveFog()->GetResFog().GetFogSampler().IsValid());  in ActivateFog()
573             NW_ASSERT(resLight.IsValid());  in ActivateHemiSphereLight()
621     NW_ASSERT(resLight.IsValid());  in ActivateFragmentLight()
650             && resLight.GetDistanceSampler().IsValid() )  in ActivateFragmentLight()
674 …NW_ASSERTMSG(resLight.GetAngleSampler().IsValid(), "The spot light must contain angle sampler(look…  in ActivateFragmentLight()
675 …NW_ASSERTMSG(resLight.GetAngleSampler().GetSampler().IsValid(), "The spot light must contain angle…  in ActivateFragmentLight()
677         if (resLight.GetAngleSampler().IsValid())  in ActivateFragmentLight()
687             && resLight.GetDistanceSampler().IsValid())  in ActivateFragmentLight()
757         NW_ASSERT(resLight.IsValid());  in ActivateVertexLight()
869     NW_ASSERT(primitive.IsValid());  in RenderPrimitive()