Image processing device having matrix computing units

An image processing device comprising:

• a matrix computing unit for performing multiplication of first and second matrix data, said matrix computing unit being connected to a vector bus through which said first matrix data is supplied, as well as to a matrix bus through which said second matrix data is supplied;
• and
• a data supply unit for supplying coordinate conversion target data to said vector bus and a coordinate conversion matrix to said matrix bus during a coordinate conversion process, and supplying first vector data to said vector bus and vector product computation matrix data generated from second vector data to said matrix bus during vector product computation.

A program product for causing a image processing device having a matrix computing unit to perform a subdivision surface process, said matrix computing unit being connected to a vector bus through which first matrix data is supplied as well as to a matrix bus through which second matrix data is supplied, and performing multiplication of said first and second matrix data, to perform a subdivision surface process,

• wherein said program generates commands that supply a mixture ratio to said vector bus and interpolation computation target data to said matrix bus, and causes said matrix computing unit to perform multiplication;
• and
• said commands comprise a first command that seeks the polygon edge midpoint coordinates using said interpolation computation target data as the polygon vertex coordinates, a second command that seeks the polygon midpoint coordinates using said interpolation computation target data as the polygon vertex coordinates, a third command that seeks midpoint coordinates which have been interpolated using said interpolation computation target data as said edge midpoint coordinates and polygon midpoint coordinates, and a fourth command that seeks vertex coordinates which have been interpolated using said interpolation computation target data as said polygon vertex coordinates and said interpolated midpoint coordinates.