SINGLE PASS BOUNDING VOLUME HIERARCHY RASTERIZATION

    公开(公告)号:EP3420537A1

    公开(公告)日:2019-01-02

    申请号:EP17701377.8

    申请日:2017-01-05

    IPC分类号: G06T15/06

    摘要: A render output unit running on at least one processor may receive a source pixel value to be written to a pixel location in a render target, wherein the source pixel value is associated with a source node in a hierarchical structure. The render output unit may receive a destination pixel value of the pixel location in the render target, wherein the destination pixel value is associated with a destination node in the hierarchical structure. The render output unit may determine a lowest common ancestor node of the source node and the destination node in the hierarchical structure. The render output unit may output a resulting pixel value associated with the lowest common ancestor node of the source node and the destination node to the pixel location in the render target.

    EFFICIENT HIERARCHY TRAVERSAL IN RAY TRACING APPLICATIONS
    3.
    发明公开
    EFFICIENT HIERARCHY TRAVERSAL IN RAY TRACING APPLICATIONS 审中-公开
    射线追踪应用中的高效层级传播

    公开(公告)号:EP3278306A1

    公开(公告)日:2018-02-07

    申请号:EP16714125.8

    申请日:2016-03-16

    发明人: OBERT, Juraj

    IPC分类号: G06T15/06 G06T17/00

    摘要: Methods and systems disclosed improve the efficiency of ray tracing. In one aspect, a method of ray tracing in a digital representation of a scene includes segmenting the scene into a plurality of voxels, associating each of the voxels with a node of a bounding volume hierarchy (BVH) representing one or more object primitives within the scene, determining a set of voxels through which the ray passes, determining a set of nodes associated with the set of voxels, determining a deepest common ancestor node of the set of nodes, traversing the hierarchy starting at the deepest common ancestor node to determine a point of intersection between the ray and one of the one or more object primitives; and updating a digital image of the scene based on the determined point of intersection.

    RAY-BOX INTERSECTION TESTING USING DOT PRODUCT-BASED FIXED FUNCTION LOGIC
    7.
    发明公开
    RAY-BOX INTERSECTION TESTING USING DOT PRODUCT-BASED FIXED FUNCTION LOGIC 审中-公开
    使用基于DOT产品的固定功能逻辑的RAY-BOX交叉测试

    公开(公告)号:EP3207526A1

    公开(公告)日:2017-08-23

    申请号:EP15781538.2

    申请日:2015-10-05

    IPC分类号: G06T15/06 G06T15/00

    摘要: A method and apparatus for ray tracing may include using texture pipeline hardware of a GPU to perform ray intersection testing for a first ray and a first shape. Using the texture pipeline hardware to perform ray intersection testing may include calculating a plurality of dot products with the texture pipeline hardware, and determining whether the first ray intersects the first shape based on the plurality of dot products.

    摘要翻译: 用于射线追踪的方法和设备可以包括使用GPU的纹理流水线硬件来针对第一射线和第一形状执行射线相交测试。 使用纹理流水线硬件来执行射线相交测试可以包括利用纹理流水线硬件来计算多个点积,并且基于多个点积来确定第一射线是否与第一形状相交。