公开(公告)号：US10559122B2

公开(公告)日：2020-02-11

申请号：US14166627

申请日：2014-01-28

Applicant: Nvidia Corporation

Inventor： Alexey Panteleev ,  Evgeny Makarov ,  Sergey Bolotov ,  Yury Uralsky

IPC: G06T15/50 ,  G06T15/55 ,  G06T15/80

Abstract: A system for, and method of, computing reduced-resolution indirect illumination using interpolated directional incoming radiance and a graphics processing subsystem incorporating the system or the method. In one embodiment, the system includes: (1) a cone tracing shader executable in a graphics processing unit to compute directional incoming radiance cones for sparse pixels and project the directional incoming radiance cones on a basis and (2) an interpolation shader executable in the graphics processing unit to compute outgoing radiance values for untraced pixels based on directional incoming radiance values for neighboring ones of the sparse pixels.

公开(公告)号：US20200043228A1

公开(公告)日：2020-02-06

申请号：US16268915

申请日：2019-02-06

Applicant: NVIDIA Corporation

Inventor： David Patrick ,  Dale L. Kirkland ,  Henry Packard Moreton ,  Ziyad Sami Hakura ,  Yury Uralsky

IPC: G06T17/10 ,  G06T15/00 ,  G06T1/20 ,  G06F9/38

Abstract: A graphics processing pipeline includes three architectural features that allow a fragment shader to efficiently calculate per-sample attribute values using barycentric coordinates and per-vertex attributes. The first feature is barycentric coordinate injection to provide barycentric coordinates to the fragment shader. The second feature is an attribute qualifier that allows an attribute of a graphics primitive to be processed without conventional fixed-function interpolation. The third feature is a direct access path from the fragment shader to triangle data storage hardware resources where vertex attribute data and/or plane equation coefficients are stored. Allowing the fragment shader to calculate per-sample attribute values in this way advantageously increases system flexibility while reducing workload associated with triangle plane equation setup.

公开(公告)号：US20200013174A1

公开(公告)日：2020-01-09

申请号：US16538209

申请日：2019-08-12

Applicant: NVIDIA Corporation

Inventor： Yury Uralsky ,  Henry Packard Moreton ,  Eric Brian Lum ,  Jonathan J. Dunaisky ,  Steven James Heinrich ,  Stefano Pescador ,  Shirish Gadre ,  Michael Alan Fetterman

IPC: G06T7/44 ,  G06T7/45 ,  G06T7/60 ,  G06T7/49

Abstract: Methods and apparatuses are disclosed for reporting texture footprint information. A texture footprint identifies the portion of a texture that will be utilized in rendering a pixel in a scene. The disclosed methods and apparatuses advantageously improve system efficiency in decoupled shading systems by first identifying which texels in a given texture map are needed for subsequently rendering a scene. Therefore, the number of texels that are generated and stored may be reduced to include the identified texels. Texels that are not identified need not be rendered and/or stored.

公开(公告)号：US10147222B2

公开(公告)日：2018-12-04

申请号：US14952390

申请日：2015-11-25

Applicant: NVIDIA CORPORATION

Inventor： Ziyad Hakura ,  Cynthia Allison ,  Dale Kirkland ,  Jeffrey Bolz ,  Yury Uralsky ,  Jonah Alben

IPC: G06T17/00 ,  G06T15/00 ,  G06T15/40 ,  G06T15/50 ,  G06T15/80 ,  G06T17/20 ,  G06T1/20

Abstract: A multi-pass unit interoperates with a device driver to configure a screen space pipeline to perform multiple processing passes with buffered graphics primitives. The multi-pass unit receives primitive data and state bundles from the device driver. The primitive data includes a graphics primitive and a primitive mask. The primitive mask indicates the specific passes when the graphics primitive should be processed. The state bundles include one or more state settings and a state mask. The state mask indicates the specific passes where the state settings should be applied. The primitives and state settings are interleaved. For a given pass, the multi-pass unit extracts the interleaved state settings for that pass and configures the screen space pipeline according to those state settings. The multi-pass unit also extracts the interleaved graphics primitives to be processed in that pass. Then, the multi-pass unit causes the screen space pipeline to process those graphics primitives.

公开(公告)号：US09633469B2

公开(公告)日：2017-04-25

申请号：US13844093

申请日：2013-03-15

Applicant: NVIDIA Corporation

Inventor： Eric Brian Lum ,  Walter Robert Steiner ,  Henry Packard Moreton ,  Justin L. Cobb ,  Barry Nolan Rodgers ,  Yury Uralsky ,  Timo Oskari Aila ,  Tero Tapani Karras

IPC: G06T3/40 ,  G06T15/10 ,  G06T11/20

CPC classification number: G06T15/10 ,  G06T3/403 ,  G06T11/203 ,  G06T11/40

Abstract: A system, method, and computer program product are provided for conservative rasterization of primitives using an error term. In use, an edge equation is determined for each edge of a primitive, the edge equation having coefficients defining the edge of the primitive. Each edge of the primitive is shifted to enlarge the primitive by modifying coefficients of the edge equation defining the edge by an error term that is a predetermined amount. Pixels that intersect the primitive are then determined using the enlarged primitive.

公开(公告)号：US09390543B2

公开(公告)日：2016-07-12

申请号：US14163801

申请日：2014-01-24

Applicant: Nvidia Corporation

Inventor： Alexey Panteleev ,  Yury Uralsky ,  Evgeny Makarov ,  Henry Moreton ,  Sergey Bolotov ,  Eric B Lum

IPC: G06T15/08 ,  G06T15/00 ,  G06T15/20 ,  G06T15/80

CPC classification number: G06T15/005 ,  G06T15/08 ,  G06T15/20 ,  G06T15/80

Abstract: A graphics processing subsystem and method for computing a 3D clipmap. One embodiment of the subsystem includes: (1) a renderer operable to render a primitive surface representable by a 3D clipmap, (2) a geometry shader (GS) configured to select respective major-plane viewports for a plurality of clipmap levels, the major-plane viewports being sized to represent full spatial extents of the 3D clipmap relative to a render target (RT) for the plurality of clipmap levels, (3) a rasterizer configured to employ the respective major-plane viewports and the RT to rasterize a projection of the primitive surface onto a major plane corresponding to the respective major-plane viewports into pixels representing fragments of the primitive surface for each of the plurality of clipmap levels, and (4) a plurality of pixel shader (PS) instances configured to transform the fragments into respective voxels in the plurality of clipmap levels, thereby voxelizing the primitive surface.

Abstract translation: 用于计算3D剪贴图的图形处理子系统和方法。 子系统的一个实施例包括：（1）渲染器，其可操作以渲染由3D剪辑映射表示的原始表面;（2）几何着色器（GS），被配置为针对多个剪贴图级别选择相应的主平面视口，主要 平面视口的大小适于表示相对于多个剪贴图级别的渲染目标（RT）的3D剪贴图的完整空间范围，（3）被配置为使用相应的主平面视口和RT来光栅化投影的光栅化器 的原始表面到与相应主平面视口对应的主平面上，以代表代表多个剪贴图级别中的每一个的原始表面的片段的像素，以及（4）多个像素着色器（PS）实例，被配置为转换 将片段分割成多个剪贴图级别中的相应体素，从而使原始表面体素化。

公开(公告)号：US20160049000A1

公开(公告)日：2016-02-18

申请号：US14645340

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: G06T15/80 ,  G06T1/20

CPC classification number: G06T15/80 ,  G06T1/20 ,  G06T15/005 ,  G06T17/205 ,  G06T2210/36

Abstract: A system, method, and computer program product are provided for performing object-space shading. A primitive defined by vertices in three-dimensional (3D) space that is specific to an object defined by at least the primitive is received and a shading sample rate is computed for the primitive based on a screen-space derivative of coordinates of a pixel fragment transformed into the 3D space. A shader program is executed by a processing pipeline to compute shaded attributes for the primitive according to the computed shading sample rate.

Abstract translation: 提供了一种用于执行对象空间阴影的系统，方法和计算机程序产品。 接收由三维（3D）空间中的至少由原语定义的对象特定的顶点定义的原语，并且基于像素片段的坐标的屏幕空间导数来计算底纹采样率 转化为3D空间。 着色器程序由处理流水线执行，以根据计算的阴影采样率计算原始图像的阴影属性。

公开(公告)号：US20160048999A1

公开(公告)日：2016-02-18

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: G06T15/80 ,  G06T17/20 ,  G06T17/10

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 fir 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.

Abstract translation: 使用动态对象空间网格提供系统，方法和计算机程序产品。 接收由特定于对象的三维（3D）空间中的三角形基元定义的对象，并且基于第一个三角形基元的坐标，为三角形基元的第一个三角形基元定义对象空间阴影网格 3D空间。 着色器程序由处理流程执行，以计算第一个三角形原语的对象空间阴影网格上的一个点处的阴影值。

公开(公告)号：US09165399B2

公开(公告)日：2015-10-20

申请号：US13666878

申请日：2012-11-01

Applicant: NVIDIA Corporation

Inventor： Yury Uralsky ,  Henry Packard Moreton

IPC: G06T15/00 ,  G06T15/40 ,  G06T15/50

CPC classification number: G06T15/405 ,  G06T15/503

Abstract: A system, method, and computer program product are provided for inputting modified coverage data into a pixel shader. In use, coverage data modified by a depth/stencil test is input into a pixel shader. Additionally, one or more actions are performed at the pixel shader, utilizing the modified coverage data.

Abstract translation: 提供了将修改的覆盖数据输入到像素着色器中的系统，方法和计算机程序产品。 在使用中，通过深度/模板测试修改的覆盖率数据被输入到像素着色器中。 另外，利用修改的覆盖数据，在像素着色器处执行一个或多个动作。

公开(公告)号：US20150109296A1

公开(公告)日：2015-04-23

申请号：US14160883

申请日：2014-01-22

Applicant: Nvidia Corporation

Inventor： Alexey Panteleev ,  Sergey Bolotov ,  Evgeny Makarov ,  Yury Uralsky

IPC: G06T15/00 ,  G06T17/00 ,  G06T19/20 ,  G06T15/20

CPC classification number: G06T15/005 ,  G06T15/08 ,  G06T15/20 ,  G06T15/80

Abstract: A graphics processing subsystem and method for updating a voxel representation of a scene. One embodiment of the graphics processing subsystem includes: (1) a memory configured to store a voxel representation of a scene having first and second regions to be updated, and (2) a graphics processing unit (GPU) operable to: (2a) unify the first and second regions into a bounding region if a volume thereof does not exceed summed volumes of the first and second regions by more than a tolerance, and (2b) generate voxels for the bounding region and cause the voxels to be stored in the voxel representation.

Abstract translation: 用于更新场景的体素表示的图形处理子系统和方法。 图形处理子系统的一个实施例包括：（1）存储器，被配置为存储具有要更新的第一和第二区域的场景的体素表示，以及（2）可操作以：（2a）统一 如果第一区域和第二区域的体积不超过第一区域和第二区域的相加体积超过公差，则为第一区域和第二区域，并且（2b）为边界区域生成体素并且使体素存储在体素中 表示。