Qualcomm Incorporated

Li Shen

Gang Zhong

Yan Li

Feng Ge

Kyusik Chung

SeokHoon Kim

The present disclosure relates to methods and apparatus for graphics processing. In some aspects, the apparatus can determine a plurality of sub-primitives corresponding to one or more primitives in an image. The apparatus can also determine visibility information for each of the sub-primitives. The visibility information can include information regarding whether the sub-primitive is visible. Further, the apparatus can identify one or more of the sub-primitives as visible based on the visibility information. The apparatus can also determine a sub-primitive visibility stream including the sub-primitives identified as visible. Additionally, the apparatus can render at least one of the sub-primitives identified as visible in the sub-primitive visibility stream. The apparatus can also identify at least one of the sub-primitives as not visible based on the determined visibility information. Moreover, the apparatus can determine to skip rendering the at least one of the sub-primitives identified as not visible.

Methods and apparatus for visibility stream management

The present disclosure relates to methods and apparatus of operation of a GPU. The apparatus can determine a plurality of attributes including one or more vertex attributes and one or more instance attributes. The apparatus can also send the plurality of attributes to at least one processing unit. Additionally, the apparatus can store at least one of the plurality of attributes in a buffer of the at least one processing unit. In some aspects, the at least one of the plurality of attributes can include the one or more instance attributes. The apparatus can also retrieve the at least one of the plurality of attributes from the buffer when the at least one of the plurality of attributes is stored in the buffer. Also, the apparatus can store at least some of the plurality of attributes in a cache of the at least one processing unit.

Methods and apparatus for GPU attribute storage

This disclosure describes a method and apparatus for performing tessellation in a graphics process. A graphics processing unit may be configured to determine tessellation factors for a first patch of the graphics data, determine, based on the tessellation factors, that a first edge of an outermost ring of the first patch will produce only degenerated sub-primitives, and skip performing tessellation for the first edge. A graphics processing unit may determine that a second edge of the outermost ring of the first patch will produce at least some normal sub-primitives, and perform tessellation for the second edge to produce output primitives.

Removal of degenerated sub-primitives in tessellation

This disclosure describes a device configured to generate a primitive visibility stream that indicates whether respective primitives of a set of primitives are visible when rendered and to generate, based on the primitive visibility stream, a draw call visibility stream that indicates whether respective draw calls for rendering the set of primitives include instructions for rendering visible primitives of the set of primitives. Based on the draw call visibility stream indicating that a respective draw call does not include instructions for rendering visible primitives, the device is further configured to drop the respective draw call. Based on the draw call visibility stream indicating that the respective draw call includes instructions for rendering visible primitives, the device is further configured to execute the respective draw call.

Growing community of inventors

San Diego, CA, United States of America

Li Shen