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

//
//   Strong typing definition
//
int64_t         UpdateInstanceIndexBufferTrimmed(
                        OwlInstance             owlInstance,
                        void                    * indexBuffer,
                        int64_t                 offset,
                        int64_t                 size
                    );


//
//   Weak typing definition
//
int64_t __declspec(dllexport) __stdcall UpdateInstanceIndexBufferTrimmed(
                                                int64_t                 owlInstance,
                                                void                    * indexBuffer,
                                                int64_t                 offset,
                                                int64_t                 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.