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    REFLECTION DENOISING IN RAY-TRACING APPLICATIONS
    6.
    发明申请
    REFLECTION DENOISING IN RAY-TRACING APPLICATIONS 审中-公开

    公开(公告)号：US20200349755A1

    公开(公告)日：2020-11-05

    申请号：US16935431

    申请日：2020-07-22

    Applicant: NVIDIA Corporation

    Inventor： Shiqiu Liu ,  Christopher Ryan Wyman ,  Jon Hasselgren ,  Jacob Munkberg ,  Ignacio Llamas

    IPC: G06T15/06 ,  G06T15/60 ,  G06T5/00 ,  G06T5/20 ,  G06T15/50

    Abstract: Disclosed approaches may leverage the actual spatial and reflective properties of a virtual environment—such as the size, shape, and orientation of a bidirectional reflectance distribution function (BRDF) lobe of a light path and its position relative to a reflection surface, a virtual screen, and a virtual camera—to produce, for a pixel, an anisotropic kernel filter having dimensions and weights that accurately reflect the spatial characteristics of the virtual environment as well as the reflective properties of the surface. In order to accomplish this, geometry may be computed that corresponds to a projection of a reflection of the BRDF lobe below the surface along a view vector to the pixel. Using this approach, the dimensions of the anisotropic filter kernel may correspond to the BRDF lobe to accurately reflect the spatial characteristics of the virtual environment as well as the reflective properties of the surface.

    Shader binding management in ray tracing
    8.
    发明授权
    Shader binding management in ray tracing 有权

    公开(公告)号：US11727632B2

    公开(公告)日：2023-08-15

    申请号：US17376866

    申请日：2021-07-15

    Applicant: NVIDIA CORPORATION

    Inventor： Martin Stich ,  Ignacio Llamas ,  Steven Parker

    IPC: G06T15/83 ,  G06F9/54 ,  G06T15/00 ,  G06T15/06

    CPC classification number: G06T15/83 ,  G06F9/54 ,  G06T15/005 ,  G06T15/06

    Abstract: In various examples, shader bindings may be recorded in a shader binding table that includes shader records. Geometry of a 3D scene may be instantiated using object instances, and each may be associated with a respective set of the shader records using a location identifier of the set of shader records in memory. The set of shader records may represent shader bindings for an object instance under various predefined conditions. One or more of these predefined conditions may be implicit in the way the shader records are arranged in memory (e.g., indexed by ray type, by sub-geometry, etc.). For example, a section selector value (e.g., a section index) may be computed to locate and select a shader record based at least in part on a result of a ray tracing query (e.g., what sub-geometry was hit, what ray type was traced, etc.).

    REFLECTION DENOISING IN RAY-TRACING APPLICATIONS
    10.
    发明申请
    REFLECTION DENOISING IN RAY-TRACING APPLICATIONS 有权

    公开(公告)号：US20220327765A1

    公开(公告)日：2022-10-13

    申请号：US17852132

    申请日：2022-06-28

    Applicant: NVIDIA Corporation

    Inventor： Shiqiu Liu ,  Christopher Ryan Wyman ,  Jon Hasselgren ,  Jacob Munkberg ,  Ignacio Llamas

    IPC: G06T15/06 ,  G06T15/60 ,  G06T5/00 ,  G06T5/20 ,  G06T15/50

    Abstract: Disclosed approaches may leverage the actual spatial and reflective properties of a virtual environment—such as the size, shape, and orientation of a bidirectional reflectance distribution function (BRDF) lobe of a light path and its position relative to a reflection surface, a virtual screen, and a virtual camera—to produce, for a pixel, an anisotropic kernel filter having dimensions and weights that accurately reflect the spatial characteristics of the virtual environment as well as the reflective properties of the surface. In order to accomplish this, geometry may be computed that corresponds to a projection of a reflection of the BRDF lobe below the surface along a view vector to the pixel. Using this approach, the dimensions of the anisotropic filter kernel may correspond to the BRDF lobe to accurately reflect the spatial characteristics of the virtual environment as well as the reflective properties of the surface.

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