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An improved method of anti-aliasing in rasterization stage in graphics rendering pipeline

A graphics rendering and rasterization technology, applied in 3D image processing, image communication, image data processing, etc., can solve problems such as slow rendering speed and complicated rendering process, achieve good anti-aliasing effect, improve computing efficiency, and realize anti-aliasing The effect of the aliasing effect

Inactive Publication Date: 2016-05-04
CHINA DIGITAL VIDEO BEIJING
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Problems solved by technology

[0006] (1) The rendering speed is slow, especially when there are multiple layers of textures;
[0007] (2) The rendering process is complicated, and all sampling points need to be calculated;

Method used

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  • An improved method of anti-aliasing in rasterization stage in graphics rendering pipeline
  • An improved method of anti-aliasing in rasterization stage in graphics rendering pipeline
  • An improved method of anti-aliasing in rasterization stage in graphics rendering pipeline

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Embodiment Construction

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on this The embodiments in the invention, and all other embodiments obtained by persons of ordinary skill in the art without creative effort, all belong to the scope of protection of the present invention.

[0019] The improved anti-aliasing method of the present invention is applied in the rasterization stage of the graphics rendering pipeline, and is a rendering engine that can be implemented independently without relying on GPU. In addition, because the scan line algorithm is used in the rasterization stage, the anti-aliasing in the rasterization stage must be implemented, and the sampling points in the X and Y directions adopt a regular m*n method....

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Abstract

The invention discloses a method for anti-aliasing improvement at a rasterization phase in a graphic rendering pipeline. The method comprises the following steps that: before a rasterization phase, according to an anti-aliasing level, an amplified color buffer region and a depth buffer region are prepared and initialization is carried out; rasterization processing is successively carried out on triangular plates forming an object; and after processing on all the triangular plates is completed, the size of the amplified color buffer region is shrunk to an original one, thereby obtaining an anti-aliasing rendering result. According to the embodiment of the invention, calculation efficiency can be effectively improved on the condition that there is a texture.

Description

technical field [0001] The invention relates to the field of subtitle processing in the field of television program production, in particular to an improved method for anti-aliasing at the rasterization stage in a graphics rendering pipeline. Background technique [0002] The subtitle system is widely used in the field of video production, and it is also an important part of the application of video technology. As a necessary element of TV programs, TV subtitles are an important display form of TV graphics. [0003] From a broad point of view, the ultimate goal of the rendering of subtitle objects processed by TV subtitles is to obtain a frame of images composed of pixels represented by 32-bit RGBA by using relevant algorithms of digital image processing based on graphical vector information and image textures. . In order to obtain a stable and clear image, it is usually necessary to perform anti-aliasing processing on the subtitle object. The anti-aliasing technology is m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T15/00H04N5/278
Inventor 蔡欢张君琦郑培枫孙季川
Owner CHINA DIGITAL VIDEO BEIJING
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