isValid

Whether bufferObject is a live object of this Engine.

Whether vertexBuffer is a live object of this Engine.

Whether fence is a live object of this Engine.

Whether instanceBuffer is a live object of this Engine.

Whether indexBuffer is a live object of this Engine.

Whether skinningBuffer is a live object of this Engine.

Whether morphTargetBuffer is a live object of this Engine.

Whether indirectLight is a live object of this Engine.

Whether material is a live object of this Engine.

Whether materialInstance is a live instance of material.

Whether renderer is a live object of this Engine.

Whether scene is a live object of this Engine.

Whether skybox is a live object of this Engine.

Whether colorGrading is a live object of this Engine.

Whether swapChain is a live object of this Engine.

Whether stream is a live object of this Engine.

Whether texture is a live object of this Engine.

Whether renderTarget is a live object of this Engine.

Whether view is a live object of this Engine.

Whether this Engine hasn't been destroyed.