Re: DrawRaster function crashes if width or height parameters are above 2K

Thanks for clarifying the API you are using.

#include <IViewDraw.h>
Interface IViewDraw inherits from IDrawGeom in the MicroStationAPI.  IDrawGeom supplies DrawRaster.

dell:

Can I split the viewport image data into smaller chunks

IViewDraw additionally supplies method DrawTiledRaster.

dell:

mdlRaster_xxx is not suitable to our requirements

It's still not clear why you discount the mdlRaster_api.  There's a lot more in it than is provided by the single method IDrawGeom.DrawRaster.

If you want GIS location, then the mdlRaster_api includes that (mdlRaster_geoReferenceInfoGet etc).  If you want more sophisticated warping and transformations then you should consider one of the add-ons, such as Bentley Map or Bentley Descartes.