摘要:
A critical phase of video processing is the decoding of bit streams coming from standard based heavy compressed sources. Entropy coding can be effectively decoded by adopting parallelism to speed up the process. Reasonable assumptions make possible for example the multiple bits at a time processing for the Context-based Adaptive Binary Arithmetic Coding (CABAC) algorithm. In particular, a clever arithmetic section reduces single propagation for the timing critical path while decoding done for only two sequence elements at a time by calculating and maintaining most probable bit values. This in turn making accelerated path using pre-determined probability outcome through parallelism not cost.
摘要:
The present invention provides post tile sorting setup in a tiled graphics pipeline architecture. In particular, the present invention determines a set of clipping points that identify intersections of a primitive with a tile. The mid-pipeline setup unit is adapted to compute a minimum depth value for that part of the primitive intersecting the tile. The mid-pipeline setup unit can be adapted to process primitives with x-coordinates that are screen based and y-coordinates that are tile based. Additionally, to the mid-pipeline setup unit is adapted to represent both line segments and triangles as quadrilaterals, wherein not all of a quadrilateral's vertices are required to describe a triangle.
摘要:
A critical phase of video processing is the decoding of bit streams coming from standard based heavy compressed sources. Entropy coding can be effectively decoded by adopting parallelism to speed up the process. Reasonable assumptions make possible for example the multiple bits at a time processing for the Context-based Adaptive Binary Arithmetic Coding (CABAC) algorithm. In particular, a clever arithmetic section reduces single propagation for the timing critical path while decoding done for only two sequence elements at a time by calculating and maintaining most probable bit values. This in turn making accelerated path using pre-determined probability outcome through parallelism not cost.
摘要:
Graphics processors and methods are described that encompass numerous substructures including specialized subsystems, subprocessors, devices, architectures, and corresponding procedures. Embodiments of the invention may include one or more of deferred shading, a bled frame buffer, and multiple-stage hidden surface removal processing, as well as other structures and/or procedures. Embodiments of the present invention are designed to provide high-performance 3D graphics with Phong shading, subpixel anti-aliasing, and texture- and bump-mappings.
摘要:
A multi-nodal data processing system in which each node has a local memory for storing message send vectors, one for each other node in the system. When a node has a message to send, it places the message in the message send vector corresponding to the destination node of that message. When a node is ready to receive messages, it reads messages from the message send vectors corresponding to this node in the other nodes. Each message send vector has a head pointer and a tail pointer for defining the head and tail of a queue of messages. Each tail pointer is held locally, in the same node as the message send vector to which it relates, while the head pointer is held in the destination node of that message send vector.
摘要:
Methods and apparatuses for dispatching instructions executed by at least one functional unit of a data processor, each one of the instructions having a corresponding priority number, in a data processing system having at least one host processor with host processor cache and host memory are described herein. In one aspect of the invention, an exemplary method includes receiving a next instruction from an instruction stream, examining a current instruction group to determine if the current instruction group is completed, adding the next instruction to the current instruction group if the current instruction group is not completed, and dispatching the current instruction group if the current instruction group is completed.
摘要:
At least one chip of a chipset in a computer system having at least one host processor and a host memory are described herein. In one aspect of the invention, an exemplary chip includes an interconnect, a memory interface coupled to the interconnect, the memory interface providing access to the host memory and controlling memory refresh and memory access, a host interface coupled to the interconnect, the host interface providing access to the host processor, and a programmable media processor coupled to the interconnect, the media processor accessing the host through the host interface and the media processor accessing the host memory through the memory interface, wherein the media processor processes time based media.
摘要:
A deferred graphics pipeline processor comprised of a mode extraction unit and a Polygon Memory associated with the polygon unit. The mode extraction unit receives a data stream from a geometry unit and separates the data stream into vertices data, and non-vertices data which is sent to the Polygon Memory for storage. A mode injection unit receives inputs from the Polygon Memory and communicates the mode information to one or more other processing units. The mode injection unit maintains status information identifying the information that is already cached and not sending information that is already cached, thereby reducing communication bandwidth.
摘要:
Three-dimensional computer graphics systems and methods and more particularly to structure and method for a three-dimensional graphics processor and having other enhanced graphics processing features. In one embodiment the graphics processor is a Deferred Shading Graphics Processor (DSGP) comprising an AGP interface, a command fetch & decode (2000), a geometry unit (3000), a mode extraction (4000) and polygon memory (5000), a sort unit (6000) and sort memory (7000), a setup unit (8000), a cull unit (9000), a mode injection (10000), a fragment unit (11000), a texture (12000) and texture memory (13000) a phong shading (14000), a pixel unit (15000), a backend unit (1600) coupled to a frame buffer (17000). Other embodiments need not include all of these functional units, and the structures and methods of these units are applicable to other computational processes and systems as well as deferred and non-deferred shading graphical processors.
摘要:
A deferred shading graphics pipeline processor and method are provided encompassing numerous substructures. Embodiments of the processor and method may include one or more of deferred shading, a tiled frame buffer, and multiple?stage hidden surface removal processing. In the deferred shading graphics pipeline, hidden surface removal is completed before pixel coloring is done. The pipeline processor comprises a command fetch and decode unit, a geometry unit, a mode extraction unit, a sort unit, a setup unit, a cull unit, a mode injection unit, a fragment unit, a texture unit, a Phong lighting unit, a pixel unit, and a backend unit.