APPARATUS AND METHOD FOR ASYNCHRONOUS RAY TRACING

    公开(公告)号:US20220130097A1

    公开(公告)日:2022-04-28

    申请号:US17392810

    申请日:2021-08-03

    Abstract: Apparatus and method for asynchronous ray tracing. For example, one embodiment of a processor comprises: a bounding volume hierarchy (BVH) generator to construct a BVH comprising a plurality of hierarchically arranged nodes including a root node, a plurality of internal nodes, and a plurality of leaf nodes comprising primitives, wherein each internal node comprises a child node to either the root node or another internal node and each leaf node comprises a child node to an internal node; a first storage bank to be arranged as a first plurality of entries; a second storage bank to be arranged as a second plurality of entries, wherein each entry of the first plurality of entries and the second plurality of entries is to store a ray to be traversed through the BVH; an allocator circuit to distribute an incoming ray to either the first storage bank or the second storage bank based on a relative numbers of rays currently stored in the first and second storage banks; and traversal circuitry to alternate between selecting a next ray from the first storage bank and the second storage bank, the traversal circuitry to traverse the next ray through the BVH by reading a next BVH node from a top of a BVH node stack and determining whether the next ray intersects the next BVH node.

    Decoupled Shading Pipeline
    149.
    发明申请

    公开(公告)号:US20210225066A1

    公开(公告)日:2021-07-22

    申请号:US17222347

    申请日:2021-04-05

    Abstract: In some embodiments, a given frame or picture may have different shading rates. In one embodiment in some areas of the frame or picture the shading rate may be less than once per pixel and in other places it may be once per pixel. Examples where the shading rate may be reduced include areas where there is motion and camera defocus, areas of peripheral blur, and in general, any case where the visibility is reduced anyway. The shading rate may be changed in a region, such as a shading quad, by changing the size of the region.

    Apparatus and method for ray tracing with grid primitives

    公开(公告)号:US11062500B2

    公开(公告)日:2021-07-13

    申请号:US16236041

    申请日:2018-12-28

    Abstract: Apparatus and method for ray tracing acceleration using a grid primitive. For example, one embodiment of an apparatus comprises: a grid primitive generator to generate a grid primitive comprising a plurality of adjacent interconnected primitives; a bitmask generator to generate a bitmask associated with the grid primitive, the bitmask comprising a plurality of bitmask values, each mask value associated with a primitive of the grid primitive; a ray tracing engine comprising traversal and intersection hardware logic to perform traversal and intersection operations in which rays are traversed through a hierarchical acceleration data structure and intersections between the rays and one or more of the adjacent interconnected primitives identified, wherein the ray tracing engine is to read the bitmask to determine a first set of primitives from the grid primitive on which to perform the traversal and intersection operations and a second set of primitives from the grid primitive on which the traversal and intersection operations will not be performed.

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