公开(公告)号：US08624916B2

公开(公告)日：2014-01-07

申请号：US13854274

申请日：2013-04-01

Applicant: NVIDIA Corporation

Inventor： Narayan Kulshrestha ,  Adam Paul Dreyer ,  Chad D. Walker ,  Rui M. Bastos

IPC: G06T1/00 ,  G06F13/00 ,  G09G5/36 ,  G06F12/00 ,  G06F15/00 ,  G06F9/00 ,  G06K9/60 ,  H04N1/46 ,  G03F3/08

CPC classification number: G06T1/20 ,  G06F9/3004 ,  G06F9/30087

Abstract: One embodiment of the invention sets forth a CROP configured to perform both color raster operations and atomic transactions. Upon receiving an atomic transaction, the distribution unit within the CROP transmits a read request to the L2 cache for retrieving the destination operand. The distribution unit also transmits the source operands and the operation code to the latency buffer for storage until the destination operand is retrieved from the L2 cache. The processing pipeline transmits the operation code, the source and destination operands and an atomic flag to the blend unit for processing. The blend unit performs the atomic transaction on the source and destination operands based on the operation code and returns the result of the atomic transaction to the processing pipeline for storage in the internal cache. The processing pipeline writes the result of the atomic transaction to the L2 cache for storage at the memory location associated with the atomic transaction.

Abstract translation: 本发明的一个实施例阐述了被配置为执行彩色光栅操作和原子事务两者的CROP。 在接收到原子事务时，CROP内的分发单元向L2缓存发送读取请求以检索目的地操作数。 分配单元还将源操作数和操作代码发送到等待时间缓冲器用于存储，直到从L2高速缓存检索目的地操作数。 处理流水线将操作码，源和目的地操作数和原子标志传送到混合单元进行处理。 混合单元基于操作代码在源操作数和目标操作数上执行原子事务处理，并将原子事务的结果返回到处理流水线以存储在内部缓存中。 处理流水线将原子事务的结果写入L2高速缓存以存储在与原子事务相关联的存储单元处。