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    FidelityFX SDK

    • AMD FidelityFX SDK documentation

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  • FidelityFX SDK
    FidelityFX SDK

    • class TLAS

    The FidelityFX Cauldron Framework api/platform-agnostic representation of the Top Level Acceleration Structure.

    File location: framework/cauldron/framework/inc/render/rtresources.h

    Methods

    Return type

    Description

    static TLAS*
    CreateTLAS ()
    TLAS instance creation function. Implemented per api/platform to return the correct internal resource type.

    const Buffer *
    GetBuffer () const
    Returns the backing “Buffer“ resource.

    void
    Build (CommandList * pCmdList) = 0
    Builds the top level acceleration structure.

    void
    AddInstance ( const BLAS * pBlas, const Mat4 & transform, const uint32_t instanceID ) = 0
    Adds a transformed BLAS instance to the TLAS instance.

    Detailed description

    The FidelityFX Cauldron Framework api/platform-agnostic representation of the Top Level Acceleration Structure. Only created when “BuildRayTracingAccelerationStructure” config is set to true.

    Methods

    CreateTLAS

    Copied!

    static TLAS* CreateTLAS ()

    TLAS instance creation function. Implemented per api/platform to return the correct internal resource type.

    GetBuffer

    Copied!

    const Buffer * GetBuffer () const

    Returns the backing Buffer resource.

    Build

    Copied!

    virtual void Build (CommandList * pCmdList) = 0

    Builds the top level acceleration structure.

    AddInstance

    Copied!

    virtual void AddInstance (
    const BLAS * pBlas,
    const Mat4 & transform,
    const uint32_t instanceID
) = 0

    Adds a transformed BLAS instance to the TLAS instance.

    Related pages

    • Visit the FidelityFX SDK product page for download links and more information.

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