公开(公告)号：US20210035348A1

公开(公告)日：2021-02-04

申请号：US17072253

申请日：2020-10-16

Applicant: INTEL CORPORATION

Inventor： Prasoonkumar SURTI ,  Tomas G. AKENINE-MOLLER ,  David J. COWPERTHWAITE ,  Kun TIAN ,  Peter L. DOYLE ,  Brent E. INSKO ,  Adam T. LAKE

IPC: G06T15/00 ,  G06T1/20 ,  G06T1/60 ,  G06T15/40 ,  G06T15/50

Abstract: A virtual reality apparatus and method are described for tile-based rendering. For example, one embodiment of an apparatus comprises: a set of on-chip geometry buffers including a first buffer to store geometry data, and a set of pointer buffers to store pointers to the geometry data; a tile-based immediate mode rendering (TBIMR) module to perform tile-based immediate mode rendering using geometry data and pointers stored within the set of on-chip geometry buffers; spill circuitry to determine when the on-chip geometry buffers are over-subscribed and responsively spill additional geometry data and/or pointers to an off-chip memory; and a prefetcher to start prefetching the geometry data from the off-chip memory as space becomes available within the on-chip geometry buffers, the TBIMR module to perform tile-based immediate mode rendering using the geometry data prefetched from the off-chip memory.

公开(公告)号：US20200333879A1

公开(公告)日：2020-10-22

申请号：US16867248

申请日：2020-05-05

Applicant: Intel Corporation

Inventor： Ingo WALD ,  Brent E. INSKO ,  Prasoonkumar SURTI ,  Adam T. LAKE ,  Peter L. DOYLE ,  Daniel POHL

IPC: G06F3/01 ,  G02B27/00

Abstract: One embodiment of a virtual reality apparatus comprises: a graphics processing engine comprising a plurality of graphics processing stages, the graphics processing engine to render a plurality of image frames for left and right displays of a head mounted display (HMD); and foveation control hardware logic to independently control two or more of the plurality of graphics processing stages based on feedback received from an eye tracking module of the HMD, the feedback indicating a foveated region selected based on a current or anticipated direction of a user's gaze, the foveation control hardware logic to cause the two or more of the graphics processing stages to process the foveated region differently than other regions of the image frames.

公开(公告)号：US20200211264A1

公开(公告)日：2020-07-02

申请号：US16236041

申请日：2018-12-28

Applicant: Intel Corporation

Inventor： Scott JANUS ,  Prasoonkumar SURTI ,  Karthik VAIDYANATHAN ,  Carsten BENTHIN ,  Philip LAWS

IPC: G06T15/06 ,  G06T15/00 ,  G06T17/00

Abstract: Apparatus and method for ray tracing acceleration using a grid primitive. For example, one embodiment of an apparatus comprises: a grid primitive generator to generate a grid primitive comprising a plurality of adjacent interconnected primitives; a bitmask generator to generate a bitmask associated with the grid primitive, the bitmask comprising a plurality of bitmask values, each mask value associated with a primitive of the grid primitive; a ray tracing engine comprising traversal and intersection hardware logic to perform traversal and intersection operations in which rays are traversed through a hierarchical acceleration data structure and intersections between the rays and one or more of the adjacent interconnected primitives identified, wherein the ray tracing engine is to read the bitmask to determine a first set of primitives from the grid primitive on which to perform the traversal and intersection operations and a second set of primitives from the grid primitive on which the traversal and intersection operations will not be performed.