Samsung Electronics Co., Ltd.

Korea Advanced Institute of Science and Technology

Chang-Hyo Yu

Lee-Sup Kim

Hong-Yun Kim

Yong-Kwon Cho

A graphic processing unit includes a geometry processing unit and a rendering processing unit. The geometry processing unit is configured to receive vertexes and to generate at least one primitive using the vertexes. The rendering processing unit is configured to convert the generated at least one primitive into fragments, to perform fragment shading on the converted fragments, and to perform anti-aliasing on the fragments on which the fragment shading has been performed. The rendering processing unit performs the anti-aliasing on first color data and second color data that is different from the first color data using different operations from each other.

Graphic processing unit, system and anti-aliasing method to perform rendering based on image information

A graphics processing unit (GPU) is provided. The GPU includes a tiling unit and a rasterizer. The tiling unit is configured to determines primitives touching a corresponding tile in tiles in an image frame, to determine at least one representative primitive of the primitives using a depth value of each of the primitives, and to generate visible primitives of the primitives for the corresponding tile using a depth value of the at least one representative primitive. The rasterizer is configured to rasterize the at least one representative and the visible primitives.

Graphic processing unit and tile-based rendering method

A graphic processor includes a rasterizer configured to process vertex data to generate fragment data based on a maximum depth value, a minimum depth value, and a mask bit of each pixel included in one tile, each mask bit indicating whether each pixel is drawn or not, the vertex data including three dimensional information of the pixels, a pixel shader configured to process the fragment data to generate color data, and a raster operation unit configured to convert the color data to pixel data to be displayed.

Graphic processor and method of early testing visibility of pixels

Provided are a 3D graphics rendering engine for processing fragments and a 3D graphics rendering engine method. The 3D graphics rendering engine positions a depth filter having a specific z value in a depth filtering circuit and compares a depth value of each of a plurality of fragments forming a first object being rasterized in a 3D space with a depth value of the depth filter. Then, the 3D graphics rendering engine stores data, which is mapped to the depth filter and corresponds to each of the fragments of the first object, in a storage device, based on the result of the comparison concerning the first object and rasterizes each of a plurality of fragments forming a second object. After that, the 3D graphics rendering engine renders the fragments of the first object and compares a depth value of each of the fragments of the second object in the 3D space with the depth value of the depth filter and removes at least one fragment from the second object that is overlapped with the first object, based on the result of the comparison concerning the second object and based on the data corresponding to each of the fragments of the first object, the data being stored in the storage device. In addition, the 3D graphics rendering engine corrects the position of the depth filter in real time according to the spatial distribution of rendered fragments.

Growing community of inventors

Yongin-si, South Korea

Chang-Hyo Yu