公开(公告)号：US20140354634A1

公开(公告)日：2014-12-04

申请号：US13907711

申请日：2013-05-31

Applicant: Nvidia Corporation

Inventor： Christian AMSINCK ,  Eric B. LUM ,  Barry RODGERS ,  Tony LOUCA ,  Christian ROUET ,  Jonathan DUNAISKY

IPC: G06T17/10

CPC classification number: G06T15/405

Abstract: Updating depth related graphics data is described. Geometric primitives are processed. Pixels are generated from the primitives based on the processing, each of which has at least one corresponding depth value. Culling is performed on a first group of the pixels, based on a representation of the at least one depth related value corresponding to each. Pixels may be discarded based on the culling and upon which a second group of pixels remain. A depth related raster operations function is performed, in which data is transacted with a depth buffer. The culling function is updated in relation to the transacting. The updating is performed on the basis of a granularity, which characterizes the culling function.

Abstract translation: 描述更新深度相关图形数据。 几何图元被处理。 基于这些处理，从基元生成像素，每个处理具有至少一个对应的深度值。 基于对应于每个像素的至少一个深度相关值的表示，对第一组像素执行剔除。 可以基于剔除而丢弃像素，并且保留第二组像素。 执行深度相关的光栅操作功能，其中数据与深度缓冲器进行交互。 剔除功能与交易相关更新。 基于粒度来进行更新，其特征在于剔除功能。

公开(公告)号：US20140104267A1

公开(公告)日：2014-04-17

申请号：US13651329

申请日：2012-10-12

Applicant: NVIDIA CORPORATION

Inventor： Christian AMSINCK ,  Christian ROUET ,  Tony LOUCA

IPC: G06T15/00

CPC classification number: G06T15/405 ,  G06T15/30 ,  G06T15/40 ,  G06T2200/28

Abstract: Techniques are disclosed for suppressing access to a depth processing unit associated with a graphics processing pipeline. The method includes receiving a graphics primitive from a first pipeline stage associated with the graphics processing pipeline. The method further includes determining that the graphics primitive is visible over one or more graphics primitives previously rendered to a frame buffer, and determining that the depth buffer is in a read-only mode. The method further includes suppressing an operation to transmit the graphics primitive to the depth processing unit. One advantage of the disclosed technique is that power consumption is reduced within the GPU by avoiding unnecessary accesses to the depth processing unit.

Abstract translation: 公开了用于抑制对与图形处理管道相关联的深度处理单元的访问的技术。 该方法包括从与图形处理流水线相关联的第一流水线阶段接收图形基元。 该方法还包括确定图形原语在先前呈现给帧缓冲器的一个或多个图形基元上可见，并且确定深度缓冲器处于只读模式。 该方法还包括抑制将图形基元发送到深度处理单元的操作。 所公开的技术的一个优点是通过避免对深度处理单元的不必要的访问来降低GPU内的功耗。