公开(公告)号：US20170263046A1

公开(公告)日：2017-09-14

申请号：US15453822

申请日：2017-03-08

Applicant: NVIDIA Corporation

Inventor： Anjul Patney ,  Marco Salvi ,  Joohwan Kim ,  Anton S. Kaplanyan ,  Christopher Ryan Wyman ,  Nir Benty ,  David Patrick Luebke ,  Aaron Eliot Lefohn

IPC: G06T15/20 ,  G06T15/80 ,  G06T5/20 ,  G06T15/50 ,  G06T15/60 ,  G06T5/00 ,  G06T15/00 ,  G06T15/04

CPC classification number: G06T15/20 ,  G02B27/017 ,  G06F3/013 ,  G06K9/40 ,  G06T2210/36

Abstract: A method, computer readable medium, and system are disclosed for rendering images utilizing a foveated rendering algorithm with post-process filtering to enhance a contrast of the foveated image. The method includes the step of receiving a three-dimensional scene, rendering the 3D scene according to a foveated rendering algorithm to generate a foveated image, and filtering the foveated image using a contrast-enhancing filter to generate a filtered foveated image. The foveated rendering algorithm may incorporate aspects of coarse pixel shading, mipmapped texture maps, linear efficient anti-aliased normal maps, exponential variance shadow maps, and specular anti-aliasing techniques. The foveated rendering algorithm may also be combined with temporal anti-aliasing techniques to further reduce artifacts in the foveated image.

公开(公告)号：US09754407B2

公开(公告)日：2017-09-05

申请号：US14645327

申请日：2015-03-11

Applicant: NVIDIA Corporation

Inventor： Anjul Patney ,  Eric B. Enderton ,  Eric B. Lum ,  Marco Salvi ,  Christopher Ryan Wyman ,  Yubo Zhang ,  Yong He ,  G. Evan Hart, Jr. ,  Kayvon Fatahalian ,  Yury Uralsky ,  Henry Packard Moreton ,  Aaron Eliot Lefohn

IPC: G06T15/50 ,  G06T15/80 ,  G06T17/10 ,  G06T17/20

CPC classification number: G06T15/80 ,  G06T17/10 ,  G06T17/20 ,  G06T17/205 ,  G06T2200/04 ,  G06T2210/36

Abstract: A system, method, and computer program product are provided for shading using a dynamic object-space grid. An object defined by triangle primitives in a three-dimensional (3D) space that is specific to the object is received and an object-space shading grid is defined for a first triangle primitive of the triangle primitives based on coordinates of the first triangle primitive in the 3D space. A shader program is executed by a processing pipeline to compute a shaded value at a point on the object-space shading grid for the first triangle primitive.

公开(公告)号：US20160203635A1

公开(公告)日：2016-07-14

申请号：US14989585

申请日：2016-01-06

Applicant: NVIDIA Corporation

Inventor： Christopher Ryan Wyman ,  Aaron Eliot Lefohn ,  Anjul Patney

IPC: G06T15/60 ,  G06T15/80 ,  G06T1/20 ,  G06T15/50

CPC classification number: G06T15/60 ,  G06T15/503 ,  G06T15/506 ,  G06T15/80

Abstract: A method, computer readable medium, and system are disclosed for rendering shadows. A frustum projected from a grid cell corresponding to a light source in light-space is defined and a graphics primitive is determined to intersect the frustum. A light-space visibility buffer is accessed to obtain a set of pixel fragment footprints corresponding to the frustum and it is identified whether each pixel fragment footprint of the pixel fragment footprints is shadowed by the graphics primitive.

Abstract translation: 公开了一种用于渲染阴影的方法，计算机可读介质和系统。 定义从光空间中对应于光源的网格单元投影的平截头体，并且确定图形原语与平截头体相交。 访问光空间可见性缓冲器以获得对应于截头锥体的一组像素片段覆盖区，并且识别像素片段脚印的每个像素片段占用是否被图形原语遮蔽。

公开(公告)号：US20150317827A1

公开(公告)日：2015-11-05

申请号：US14704875

申请日：2015-05-05

Applicant: NVIDIA Corporation

Inventor： Cyril Jean-Francois Crassin ,  Morgan McGuire ,  Aaron Eliot Lefohn ,  David Patrick Luebke

IPC: G06T15/80 ,  G06T1/60 ,  G06K9/52 ,  G06K9/62

CPC classification number: G06T15/005 ,  G06K9/6218 ,  G06K9/622 ,  G06K9/6272 ,  G06T1/60 ,  G06T15/80

Abstract: A system, method, and computer program product are provided for generating anti-aliased images. The method includes the steps of assigning one or more samples to a plurality of clusters, each cluster in the plurality of clusters corresponding to an aggregate stored in an aggregate geometry buffer, where each of the one or more samples is covered by a visible fragment and rasterizing three-dimensional geometry to generate material parameters for each sample of the one or more samples. For each cluster in the plurality of clusters, the material parameters for each sample assigned to the cluster are combined to produce the aggregate. The combined material parameters for each cluster are stored in an aggregate geometry buffer. An anti-aliased image may then be generated by shading the combined material parameters.

Abstract translation: 提供了一种用于产生抗锯齿图像的系统，方法和计算机程序产品。 该方法包括以下步骤：将一个或多个样本分配给多个聚类，多个聚类中的每个簇对应于存储在聚合几何缓冲器中的聚合，其中一个或多个样本中的每一个被可见碎片覆盖， 光栅化三维几何以生成一个或多个样本的每个样本的材料参数。 对于多个集群中的每个集群，将分配给集群的每个样本的材料参数组合以产生聚合。 每个集群的组合材料参数都存储在聚合几何缓冲区中。 然后可以通过遮蔽组合的材料参数来生成抗锯齿图像。