Intel Corporation

Akshay R Chada

Abhishek R Appu

Joydeep Ray

Prasoonkumar Surti

Vasanth Ranganathan

Karol A Szerszen

Saikat Mandal

Vamsee Vardhan Chivukula

Altug Koker

Saurabh Sharma

Aleksander Olek Neyman

Luis F Cruz Camacho

Art Hunter

Andrew S Downsworth

Bryon T Rogers

Briefly, in accordance with one or more embodiments, a processor performs a coarse depth test on pixel data, and performs a final depth test on the pixel data. Coarse depth data is stored in a coarse depth cache, and per pixel depth data is stored in a per pixel depth cache. If a result of the coarse depth test is ambiguous, the processor is to read the per pixel depth data from the per pixel depth cache, and to update the coarse depth data with the per pixel depth data if the per pixel depth data has a smaller depth range than the coarse depth data.

Hierarchical depth buffer back annotation

Hierarchical depth buffer back annotaton

An embodiment of graphics apparatus may include a coarse depth tester to perform a coarse depth test on a block of pixels, and a stencil tester to perform a stencil test on the block of pixels. The stencil tester may be further configured to perform the stencil test in parallel with the coarse depth test. Other embodiments are disclosed and claimed.

Graphics with early stencil test

Growing community of inventors

Folsom, CA, United States of America

Akshay R Chada