CPU-based graphic rendering engine and realization method

Abstract

The invention discloses a CPU-based graphic rendering engine and a realization method. The CPU-based graphic rendering engine consists of a rending preparation module, a camera space module, a conversion module, an illumination module, a rasterization module, a rendering ending module. The realization method for graphic rendering comprises the following steps that: an application program sets a rendering state and sends the rendering state to the rendering preparation module and meanwhile, the rendering preparation module initializes a color buffer region and a depth buffer region; the camera space module establishes a view conversion matrix and a projection conversion matrix according to camera data in a scene; objects in the scene are taken successively and the conversion module, the illumination module and the rasterization module carry out processing on the objects to complete rendering on all the subjects; after all the objects in the scene are rendered, a rendering result is posted back to the application program and is then output; and the rendering ending module empties the color buffer region and the depth buffer region that are prepared during the rendering preparation stage. According to the invention, it can be realized that graphic rendering is carried out directly based on a CPU without relying on a display card, thereby realizing good portability and realizing controllability on an effect of a subtitle system.

Description

technical field [0001] The invention relates to the field of subtitle processing in TV program production in the radio and television field, in particular to a CPU-based graphics rendering engine and an implementation method. Background technique [0002] With the continuous development of computer graphics, images, and video technologies, and the domestic broadcasting industry is in the period of transition from standard definition mode to high definition mode, television production and broadcasting units such as TV stations have put forward higher requirements for the production and broadcasting of TV graphics. , Update requirements. It is required to greatly enhance and enrich the broadcast effect of graphics and texts, and show visual impact. [0003] GPU (Graphic Processing Unit, Graphics Processing Unit), a chip computing unit that independently processes computer graphics images. It is precisely because of the superior, flexible processing performance and highly par...

AI Technical Summary

Problems solved by technology

[0011] In order to solve the above-mentioned shortcomings of the prior art, the main purpose of the present invention is to provide a CPU-based graphics rendering engine and its implementation method, to solve the problem in the prior art that the graphics rendering of the GPU must rely on the graphics card for graphics rendering

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