Qualcomm Incorporated

Ati Technologies Inc.

Ati Technologies Ulc

Maurice Franklin Ribble

Skyler Jonathon Saleh

Jonathan Lawrence Campbell

Moinul H Khan

Nhon Toai Quach

Martin Renschler

Colin Christopher Sharp

David Rigel Garcia Garcia

Andrew Evan Gruber

Ning Bi

Vineet Goel

Avinash Seetharamaiah

Christopher Paul Frascati

Ramesh Chandrasekhar

Murat Balci

Rashmi Kulkarni

Mehrad Tavakoli

Assaf Menachem

Hitendra Mohan Gangani

Eduardus Antonius Metz

Ricky Wai Kit Yuen

Jeffrey Leger

Zachary Aaron Pfeffer

Suman Tatiraju

Todd Lemoine

Mohan Maiya

This disclosure describes examples for foveation rendering. A graphics processing unit (GPU) may render image content for each tile at different sizes as part of the rendering pass after a binning pass in which the GPU determined to which tiles vertices of primitives belong. The GPU may upsample the rendered image content based on the size at which GPU rendered the image content, and output the upsampled image content for later display.

Foveated rendering in tiled architectures

This disclosure describes examples for determining an amount of foveation that is to be applied for rendering an image. The example techniques may use information indicative of a performance of a graphics processing unit (GPU) to determine the amount of foveation that is to be applied. The GPU may render an image based on the determined amount of foveation.

Dynamic foveation adjustment

A graphics processing unit (GPU) may rasterize a primitive into a plurality of samples, wherein vertices of the primitive are associated with VRS parameters. The GPU may determine a VRS quality group that comprises one or more sub regions of the plurality of samples based at least in part on the VRS parameters. The GPU may fragment shade a VRS tile that represents the VRS quality group, wherein the VRS tile comprises fewer samples than the VRS quality group. The GPU may amplify the stored VRS tile into shaded fragments that correspond to the VRS quality group.

Per-vertex variable rate shading

Certain aspects of the present disclosure provide methods and apparatus for operating a wearable display device. Certain aspects of the present disclosure provide a method for operating a wearable display device. The method includes determining a position of the wearable display device based on a motion sensor. The method includes rendering, by a graphics processing unit, an image based on the determined position. The method includes determining a first updated position of the wearable display device based on the motion sensor. The method includes warping, by a warp engine, a first portion of the rendered image based on the first updated position. The method includes displaying the warped first portion of the rendered image on a display of the wearable display device.

Display synchronized image warping

Techniques are described in which a processor determines an expected performance level of a graphics processing unit (GPU) based on an amount of commands the GPU is to execute. The processor outputs information indicating the performance level, and the GPU adjusts its clock rate prior to execution of the commands that were used to determine the performance level.

Clock rate adjustment for processing unit

Systems, methods, and computer programs are disclosed for reducing motion-to-photon latency and memory bandwidth in a virtual reality display system. An exemplary method involves receiving sensor data from one or more sensors tracking translational and rotational motion of a user for a virtual reality application. An updated position of the user is computed based on the received sensor data. The speed and acceleration of the user movement may be computed based on the sensor data. The updated position, the speed, and the acceleration may be provided to a warp engine configured to update a rendered image before sending to a virtual reality display based on one or more of the updated position, the speed, and the acceleration.

Systems and methods for reducing motion-to-photon latency and memory bandwidth in a virtual reality system

In an example, a method for rendering graphics data includes receiving a plurality of commands associated with a plurality of render targets, where the plurality of commands are received in an initial order. The method also includes determining an execution order for the plurality of commands including reordering one or more of the plurality of commands in a different order than the initial order based on data dependencies between commands. The method also includes executing the plurality of commands in the determined execution order.

Render target command reordering in graphics processing

In general, aspects of this disclosure describe example techniques for efficient storage of data of various data types for graphics processing. In some examples, a processing unit may assign first and second contiguous range of addresses for a first and second data type, respectively. The processing unit may store at least one of graphics data of the first or second data type or addresses of the graphics data of the first or second data type within blocks whose addresses are within the first and second contiguous range of addresses, respectively. The processing unit may store, in cache lines of a cache, the graphics data of the first data type, and the graphics data of the second data type.

Data storage address assignment for graphics processing

This disclosure describes techniques for automatically selecting a rendering mode for use by a graphics processing unit (GPU) to render graphics data for display. More specifically, the techniques include evaluating at least two metrics associated with rendering graphics data of one or more rendering units, and automatically selecting either an immediate rendering mode or a deferred rendering mode for a current rendering unit based on the evaluated metrics. The selected rendering mode may be the one of the rendering modes predicted to use less power and/or system bandwidth to render the graphics data of the current rendering unit. A rendering unit may comprise a set of frames, a frame, a portion of a frame, multiple render targets associated with a frame, a single render target associated with a frame, or a portion of a single render target.

Rendering mode selection in graphics processing units

Systems and methods are provided for processing data. The systems and methods include multiple processors that each couple to receive commands and data, where the commands and/or data correspond to frames of video that include multiple pixels. An interlink module is coupled to receive processed data corresponding to the frames from each of the processors. The interlink module divides a first frame into multiple frame portions by dividing pixels of the first frame using at least one balance point. The interlink module dynamically determines a position for the balance point that minimizes differences between the workload of the processors during processing of commands and/or data of one or more subsequent frames.

Growing community of inventors

Lancaster, MA, United States of America

Maurice Franklin Ribble