This function tells the engine that all buffers have no memory of earlier filling for a certain instance.
This means that even when buffer content didn't changed it will be updated when functions UpdateVertexBuffer(), UpdateIndexBuffer() and/or transformationBuffer() are called for this specific instance.


//   Visual Studio for Windows
void __declspec(dllexport) __stdcall ClearedInstanceExternalBuffers(
            __int64             owlInstance

//   Linux, OS-X and non-Visual Studio Windows solutions
void ClearedInstanceExternalBuffers(
            int64_t             owlInstance

Property owlInstance

Size: 64 bit / 8 byte (value)
The handle to the specific instance in the design tree. The instance handle is static within one open model but is most probably different when the same instance is opened in another model. The instance is always exactly of one unique class.