Graphics command stream for calling a display object in a graphics system
AssigneeNintendo Co., Ltd.
InventorsVimal Parikh, Robert Moore, Howard Cheng
Life of this patent
Estimating the term…
Abstract
An interface for a graphics system includes simple yet powerful constructs that are easy for an application programmer to use and learn. Features include a unique vertex representation allowing the graphics pipeline to retain vertex state information and to mix indexed and direct vertex values and attributes; a projection matrix value set command; a display list call object command; and an embedded frame buffer clear/set command.
Claims4
A graphics system command stream for use in a graphics system to call a display list, the command stream comprising:
- a bit pattern “01000000”, followed by
- a pad, followed by
- a 25-bit value indicating the address of the display list in memory, followed by
- a pad, followed by
- a 25-bit value indicating the size of the display list in 32-byte chunks,
- wherein upon execution of the command stream the display list is called.
A computer readable storage medium encoded with executable instructions for calling a display list in memory, comprising:
- a bit pattern “01000000”, followed by
- a bit pattern “0000000”, followed by
- a 25-bit value indicating the address of the display list in memory, followed by
- a bit pattern “0000000”, followed by
- a 25-bit value indicating the size of the display list in 32-byte chunks,
- wherein upon execution of the encoded instructions the display list is called.
A graphics command stream decoder comprising:
- a first decoding section decoding a bit pattern “01000000”,
- a second decoding section decoding a bit pattern “0000000”,
- a third decoding section decoding a 25-bit value indicating the address of a display list in memory,
- a fourth decoding section decoding a bit pattern “0000000”,
- a further decoding section decoding a 25-bit value indicating the size of the display list in 32-byte chunks.
A method of calling a display list in a graphics system using a graphics command stream, the method comprising:
- generating a bit pattern “01000000”, then
- generating a bit pattern “0000000”, then
- generating a 25-bit value indicating the address of the display list in memory, then
- generating a bit pattern “0000000”, then
- generating a 25-bit value indicating the size of the display list in 32-byte chunks,
- wherein upon execution of the command stream the display list is called.
Dependencies are inferred from the claim text.