Patent ID: 6559856
Filing Date: 2003-05-06
Classification: H03M

Abstract:
A fixed-point graphics apparatus comprising:first logic operable for converting a first operand to a first fixed point data value having a preselected number of bits, said first logic generating said first fixed point data value using a first predetermined scaling in response to said preselected number of bits; and second logic operable for converting a second operand to a second fixed point data value having said preselected number of bits, said second logic generating said second fixed point data value using a second predetermined scaling in response to said preselected number of bits and a number of bits in a color data value, wherein said first and second fixed point data values are operable for generating a color data value in accordance with a preselected lighting model, wherein said first predetermined scaling is (2n âˆ’1), and said second predetermined scaling is (22n/2nâˆ’1)Â·((2mâˆ’1)/2m), and wherein said preselected number of bits is n, and said number of bits in said color data value is m.