摘要:
A method and apparatus for managing texture mapping data in a computer graphics system, the system including a host computer, primitive rendering hardware and a textured primitive data path extending between the host computer and the primitive rendering hardware. The host computer passes textured primitives to be rendered by the system using corresponding texture mapping data to the primitive rendering hardware over the textured primitive data path. The host computer has a main memory that stores texture mapping data corresponding to the textured primitives to be rendered. The primitive rendering hardware includes a local texture memory that locally stores the texture mapping data corresponding to at least one of the textured primitives to be rendered. When texture mapping data corresponding to one of the textured primitives to be rendered is stored in the host computer main memory but not within the local texture mapping memory, the texture mapping data corresponding to the one of the textured primitives is downloaded from the host computer main memory to the local texture mapping memory through a texture mapping data path that is separate from the textured primitive data path.
摘要:
Graphics window systems which utilize graphics pipelines and graphics pipeline bypass buses. Hardware solutions for window relative rendering of graphics primitives, block moving of graphics primitives, transfer of large data blocks, and elimination of pipeline flushing are disclosed. The hardware implementations provided in accordance with the invention are interfaced along the pipeline bypass bus, thereby eliminating gross overhead processor time for the graphics pipeline and reducing pipeline latency. Methods and apparatus provided in accordance with the invention exhibit significant pipeline efficiency and reductions in time to render graphics primitives to the screen system.
摘要:
The present invention is broadly directed to a system of components defining a plurality of nodes and a random access memory (RAM) connected to each node. The system comprises at least one producer functional unit configured to perform a predetermined processing function resulting in the creation of at least one producer message, a communication mechanism configured to manage and control communication of messages with other nodes, at least one pointer that is configurable to point to a storage location within the RAM, and a message logic configured to interpret content of the at least one producer message, the message logic further configured to associate the producer message with a subset of the at least one pointers based upon the content of the at least one producer message, the message logic further configured to store the at least one producer message within the RAM at the locations indicated by the associated subset of at least one pointer.
摘要:
A method and apparatus for managing blocks of data in a data processing system, the data processing system including a host computer and data processing hardware, the host computer having a main memory that stores blocks of data to be processed by the data processing hardware, the data processing hardware including a local memory that locally stores a subset of the blocks of data to be processed by the data processing hardware. When a portion of one of the blocks of data is to be processed by the data processing hardware, a determination is made as to whether the block of data is in the local memory. When the block of data is in the local memory, the portion of the block of data to be processed is read from the local memory. When the block of data is not in the local memory, it is downloaded from the host computer main memory to the data processing hardware. The data processing hardware may generate an interrupt to the host computer with a request to download data.
摘要:
A system is described that is broadly directed to a system of integrated circuit components. The system comprises a plurality of nodes that are interconnected by communication links. A random access memory (RAM) is connected to each node. At least one functional unit is integrated into each node, and each functional unit is configured to carry out a predetermined processing function. Finally, each RAM includes a coherency mechanism configured to permit only read access to the RAM by other nodes, the coherency mechanism further configured to permit write access to the RAM only by functional units that are local to the node.
摘要:
A system and method for allocating data among first and second banks of at least one SDRAM, the data including first, second and third words to be accessed during consecutive read operations. The method includes the following steps: storing the first and third words within the first bank, and storing the second word within the second bank. The texture mapping computer graphics system includes a host computer with a main memory that stores texture data including a plurality of texels, and a local memory that stores at least a portion of the texture data. The local memory includes at least one SDRAM.
摘要:
Graphics window systems which utilize graphics pipelines and graphics pipeline bypass buses. Hardware solutions for window relative rendering of graphics primitives, block moving of graphics primitives, transfer of large data blocks, and elimination of pipeline flushing are disclosed. The hardware implementations provided in accordance with the invention are interfaced along the pipeline bypass bus, thereby eliminating gross overhead processor time for the graphics pipeline and reducing pipeline latency. Methods and apparatus provided in accordance with the invention exhibit significant pipeline efficiency and reductions in time to render graphics primitives to the screen system.
摘要:
Methods and apparatus for rendering graphics primitives to display devices in a computer graphics frame buffer system are disclosed. The methods provide an array of addressable video random access memory (VRAM) chips associated to form the graphics frame buffer. The VRAMs in the frame buffer are addressed with coordinate pixel locations on the display device corresponding to locations of the graphics primitives on the display device. The frame buffer is accessed with a graphics rendered according to arbitrarily shaped tiles containing pixels such that the pixels within the tiles have potentially different VRAM addresses.
摘要:
A system and method communicate information from a single-threaded application over multiple I/O busses to a computing subsystem for processing. In accordance with one embodiment, a method is provided that partitions state-sequenced information for communication to a computer subsystem, communicates the partitioned information to the subsystem over a plurality of input/output busses, and separately processes the information received over each of the plurality of input/output busses, without first se-sequencing the information.
摘要:
A method and apparatus for managing blocks of data in a data processing system, the data processing system including a host computer and data processing hardware, the host computer having a main memory that stores blocks of data to be processed by the data processing hardware, the data processing hardware including a local memory that locally stores a subset of the blocks of data to be processed by the data processing hardware. When a portion of one of the blocks of data is to be processed by the data processing hardware, a determination is made as to whether the block of data is in the local memory. When the block of data is in the local memory, the portion of the block of data to be processed is read from the local memory. When the block of data is not in the local memory, it is downloaded from the host computer main memory to the data processing hardware. The data processing hardware may generate an interrupt to the host computer with a request to download data.