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Hardware-assisted visibility-ordering algorithm

机译:硬件辅助的可见性排序算法

摘要

A hardware assisted system and method for computing a visibility ordering of a set of primitives and rendering the set of primitives is described, comprising the steps of and means for locating primitives potentially in a layer and removing occluded primitives from the layer. The hardware assisted locating step further includes the steps of initializing hardware buffers, initializing a layer number, assigning the layer number to each primitive, extracting a subset of the primitives from the set of primitives assigned to the layer number, and storing the subset of primitives in a color buffer. The hardware assisted removing step further includes the steps of reading the color buffer to locate all primitives of the layer number, traversing a pixel array of the subset of primitives to obtain primitive ids and depth complexities, testing depth complexity for each primitive using a stencil buffer, removing those primitives from the layer number if the depth complexity greater than one, re-inserting the primitives with a depth complexity greater than one back into the set of primitives, rendering the primitives of the layer number, incrementing the layer number, determining if any primitives have been extracted from the set of primitives in the layer number, halting execution if no primitives have been removed from the layer number, and repeating all of the above steps.
机译:描述了一种用于计算一组图元的可见性排序并渲染该图元集的硬件辅助系统和方法,包括用于在层中潜在地定位图元并从该层中去除被遮挡的图元的步骤和装置。硬件辅助定位步骤还包括以下步骤:初始化硬件缓冲区,初始化层号,将层号分配给每个图元,从分配给层号的图元集合中提取图元的子集以及存储图元的子集在颜色缓冲区中。硬件辅助去除步骤还包括以下步骤:读取颜色缓冲区以查找层号的所有图元,遍历图元子集的像素数组以获得图元id和深度复杂度,使用模板缓冲区测试每个图元的深度复杂度,如果深度复杂度大于1,则从层号中删除这些图元,然后将深度复杂度大于1的图元重新插入到图元集合中,渲染层号的图元,增加层号,确定是否从层编号中的一组基元中提取任何基元,如果尚未从层编号中除去基元,则停止执行,并重复上述所有步骤。

著录项

  • 公开/公告号US6801215B1

    专利类型

  • 公开/公告日2004-10-05

    原文格式PDF

  • 申请/专利权人 AT&T CORP.;

    申请/专利号US20010995683

  • 发明设计人 BIN WEI;CLAUDIO T. SILVA;

    申请日2001-11-29

  • 分类号G09G50/20;

  • 国家 US

  • 入库时间 2022-08-21 23:16:54

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