Method and device for efficiently drawing and rendering basic graphic

Abstract

The invention relates to a method and a device for efficiently drawing and rendering a basic graphic, which comprises the following steps of: creating a memory texture and a video texture by using OpenGL or DirecX to obtain a data buffer in the first layer of memory texture, and creating a device context (DC) related to the data buffer; creating GDI (Graphics Device Interface) or GDIPlus drawing object by using the DC, and drawing the basic graphic by using the drawing object; and updating the data in the memory texture to the video texture, rendering the video texture by using OpenGL or DirecX, and displaying the data in the video texture. The scheme of the invention not only maintains the advantage of high graphic rendering efficiency of OpenGL and DirecX, but also favorably utilizes the traditional algorithm and the function packaging of GDI and GDIPlus to favorably realize better combination of the existing algorithm and the function packaging, simply and conveniently realizes thedrawing function of the basic graphic, and lowers the technical requirements of OpenGL and DirecX for developers.

Description

technical field [0001] The invention relates to the technical field of drawing and rendering of computer graphics, in particular to a method for drawing and rendering basic graphics with high efficiency, and a device for drawing and rendering basic graphics with high efficiency. Background technique [0002] In today's computer graphics field, the drawing and rendering of basic graphics is a common function. The commonly used implementation technologies are GDI, GDIPlus, OpenGL and DirectX. In terms of graphics rendering efficiency, GDI is slightly higher than GDIPlus, but the difference is not large; similarly, the rendering efficiency of OpenGL and DirectX is also comparable. But as we all know, OpenGL and DirectX make full use of the acceleration function of the hardware, especially the graphics card, with strong computing power and low CPU usage, and are much more efficient in graphics rendering than GDI and GDIPlus. [0003] In specific software development, software ...

AI Technical Summary

Problems solved by technology

This is because the graphics drawn by GDI, especially GDIPlus, have high smoothness, rich graphics function interfaces, powerful functions, and good encapsulation, which is very convenient for the realization of graphics drawing functions. However, OpenGL and DirectX have insufficient encapsulation of algorithms and do not provide rich graphics. Interface, so the use complexity is correspondingly high

For example, for the drawing function of ellipse graphics, GDIPlus only needs to call a function interface DrawEllipse to realize it. Since OpenGL and DirectX have no ready-made function interface calls, software developers are required to realize their drawing functions according to the ellipse algorithm. This is undoubtedly Increased software development complexity

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