Invention Grant
- Patent Title: Integration of variable rate shading and super-sample shading
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Application No.: US16228692Application Date: 2018-12-20
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Publication No.: US11276211B2Publication Date: 2022-03-15
- Inventor: Skyler Jonathon Saleh , Andrew S. Pomianowski
- Applicant: Advanced Micro Devices, Inc.
- Applicant Address: US CA Santa Clara
- Assignee: Advanced Micro Devices, Inc.
- Current Assignee: Advanced Micro Devices, Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Volpe Koenig
- Main IPC: G06T11/40
- IPC: G06T11/40 ; G06T1/60 ; G06T1/20

Abstract:
A technique for performing rasterization and pixel shading with decoupled resolution is provided herein. The technique involves performing rasterization as normal to generate quads. The quads are accumulated into a tile buffer. A shading rate is determined for the contents of the tile buffer. If the shading rate is a sub-sampling shading rate, then the quads in the tile buffer are down-sampled, which reduces the amount of work to be performed by a pixel shader. The shaded down-sampled quads are then restored to the resolution of the render target. If the shading rate is a super-sampling shading rate, then the quads in the tile buffer are up-sampled. The results of the shaded down-sampled or up-sampled quads are written to the render target.
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