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    Primitive shader
    1.
    发明授权
    Primitive shader 有权

    公开(公告)号：US11379941B2

    公开(公告)日：2022-07-05

    申请号：US15415823

    申请日：2017-01-25

    Applicant: Advanced Micro Devices, Inc. ,  ATI Technologies ULC

    Inventor： Todd Martin ,  Mangesh P. Nijasure ,  Randy W. Ramsey ,  Michael Mantor ,  Laurent Lefebvre

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

    Abstract: Improvements in the graphics processing pipeline are disclosed. More specifically, a new primitive shader stage performs tasks of the vertex shader stage or a domain shader stage if tessellation is enabled, a geometry shader if enabled, and a fixed function primitive assembler. The primitive shader stage is compiled by a driver from user-provided vertex or domain shader code, geometry shader code, and from code that performs functions of the primitive assembler. Moving tasks of the fixed function primitive assembler to a primitive shader that executes in programmable hardware provides many benefits, such as removal of a fixed function crossbar, removal of dedicated parameter and position buffers that are unusable in general compute mode, and other benefits.

    Single pass flexible screen/scale rasterization
    5.
    发明授权
    Single pass flexible screen/scale rasterization 有权

    公开(公告)号：US10546365B2

    公开(公告)日：2020-01-28

    申请号：US15843968

    申请日：2017-12-15

    Applicant: ADVANCED MICRO DEVICES, INC. ,  ATI TECHNOLOGIES ULC

    Inventor： Michael Mantor ,  Laurent Lefebvre ,  Mika Tuomi ,  Kiia Kallio

    IPC: G06T3/40 ,  G06T1/20 ,  G06T3/00 ,  G06T15/80 ,  G06T15/00

    Abstract: An apparatus, such as a head mounted device (HMD), includes one or more processors configured to implement a graphics pipeline that renders pixels in window space with a nonuniform pixel spacing. The apparatus also includes a first distortion function that maps the non-uniformly spaced pixels in window space to uniformly spaced pixels in raster space. The apparatus further includes a scan converter configured to sample the pixels in window space through the first distortion function. The scan converter is configured to render display pixels used to generate an image for display to a user based on the uniformly spaced pixels in raster space. In some cases, the pixels in the window space are rendered such that a pixel density per subtended area is constant across the user's field of view.

    Light volume rendering
    8.
    发明授权
    Light volume rendering 有权

    公开(公告)号：US11551398B2

    公开(公告)日：2023-01-10

    申请号：US17008388

    申请日：2020-08-31

    Applicant: Advanced Micro Devices, Inc. ,  ATI Technologies ULC

    Inventor： Mika Tuomi ,  Miikka Petteri Kangasluoma ,  Jan Henrik Achrenius ,  Laurent Lefebvre

    IPC: G06T15/00 ,  G06T15/40 ,  G06T15/80 ,  G06T17/10 ,  G06T7/00 ,  G06T1/20

    Abstract: Systems, apparatuses, and methods for implementing light volume rendering techniques are disclosed. A processor is coupled to a memory. A processor renders the geometry of a scene into a geometry buffer. For a given light source in the scene, the processor initiates two shader pipeline passes to determine which pixels in the geometry buffer to light. On the first pass, the processor renders a front-side of a light volume corresponding to the light source. Any pixels of the geometry buffer which are in front of the front-side of the light volume are marked as pixels to be discarded. Then, during the second pass, only those pixels which were not marked to be discarded are sent to the pixel shader. This approach helps to reduce the overhead involved in applying a lighting effect to the scene by reducing the amount of work performed by the pixel shader.

    Hybrid render with preferred primitive batch binning and sorting
    10.
    发明授权
    Hybrid render with preferred primitive batch binning and sorting 有权

    公开(公告)号：US11954782B2

    公开(公告)日：2024-04-09

    申请号：US17208730

    申请日：2021-03-22

    Applicant: Advanced Micro Devices, Inc. ,  ATI Technologies ULC

    Inventor： Michael Mantor ,  Laurent Lefebvre ,  Mikko Alho ,  Mika Tuomi ,  Kiia Kallio

    IPC: G06T15/00 ,  G06T15/04

    CPC classification number: G06T15/005 ,  G06T15/04

    Abstract: A method, system, and non-transitory computer readable storage medium for rasterizing primitives are disclosed. The method, system, and non-transitory computer readable storage medium includes: generating a primitive batch from a sequence of one or more primitives, wherein the primitive batch includes primitives sorted into one or more row groups based on which row of a plurality of rows each primitive intersects; and processing each row group, the processing for each row group including: identifying one or more primitive column intercepts for each of the one or more primitives in the row group, wherein each combination of primitive column intercept and row identifies a bin; and rasterizing the one or more primitives that intersect the bin.

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