UpdateInstanceIndexBufferTrimmed

This function is an alternative for UpdateInstanceIndexBuffer(), in case the index buffer should be divided over a set of arrays this function allows to fill part of the index buffer given a certain offset and size.

Syntax

//
//   Linux, MacOS and non-Visual Studio Windows solutions (pure C++11 / C++98)
//
int64_t     UpdateInstanceIndexBufferTrimmed(
                    int64_t             owlInstance,
                    void                * indexBuffer,
                    int64_t             offset,
                    int64_t             size
                );


//
//   Visual Studio for Windows
//
__int64 __declspec(dllexport) __stdcall UpdateInstanceIndexBufferTrimmed(
                                                __int64             owlInstance,
                                                void                * indexBuffer,
                                                __int64             offset,
                                                __int64             size
                                            );
    

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.

Property indexBuffer

Size: 64 bit / 8 byte (reference)
The array of indices, this array is allocated by the host application. Depending on SetFormat() the array exists of 32 bit (4 byte) integers or 64 bit (8 byte) integeres.

Property offset

Size: 64 bit / 8 byte (value)
The given offset.

Property size

Size: 64 bit / 8 byte (value)
The given size.