公开(公告)号：US20140118380A1

公开(公告)日：2014-05-01

申请号：US14016789

申请日：2013-09-03

Applicant: NVIDIA CORPORATION

Inventor： Ziyad S. HAKURA ,  Pierre SOUILLOT ,  Cynthia Ann Edgeworth ALLISON ,  Dale L. KIRKLAND ,  Walter R. STEINER

IPC: G06T1/60

CPC classification number: G06F9/38 ,  G06F9/44 ,  G06F12/0808 ,  G06F12/0875 ,  G06F2212/302 ,  G06T1/20 ,  G06T1/60 ,  G06T15/005 ,  G06T15/405 ,  G06T15/503 ,  G06T15/80 ,  G06T17/20 ,  G09G5/003 ,  G09G5/395 ,  Y02D10/13

Abstract: One embodiment of the present invention includes a graphics subsystem that includes a tiling unit, a crossbar unit, and a screen-space pipeline. The crossbar unit is configured to transmit primitives interleaved with state change commands to the tiling unit. The tiling unit is configured to record an initial state associated with the primitives and to transmit to the screen-space pipeline one or more primitives in the primitives that overlap a first cache tile. The tiling unit is further configured to transmit the initial state to the screen-space pipeline and to transmit to the screen-space pipeline one or more primitives in the primitives that overlap a second cache tile. The tiling unit includes a state filter block configured to determine that a first state change in the state change commands is followed by a second state change, without an intervening primitive, and to forego transmitting the first state change in response.

Abstract translation: 本发明的一个实施例包括图形子系统，其包括平铺单元，横杆单元和屏幕空间管线。 交叉单元被配置为将与状态改变命令交错的原语发送到平铺单元。 拼接单元被配置为记录与图元相关联的初始状态，并且向屏幕空间流水线发送与第一高速缓存块重叠的图元中的一个或多个图元。 平铺单元还被配置为将初始状态发送到屏幕空间流水线并且向屏幕空间流水线发送与第二高速缓存块重叠的原语中的一个或多个基元。 平铺单元包括状态过滤块，其被配置为确定状态改变命令中的第一状态改变后跟第二状态改变，而没有中间原语，并且放弃发送响应中的第一状态改变。