Image rendering method applied to computer screen

Abstract

The invention discloses an image rendering method applied to a computer screen, comprising the following steps: (1) a window for supporting a transparent channel is created; (2) display coordinates of each pixel in the image are computed, a three-dimensional accelerated graphics port is used for amplifying the image and rendering the image to a local video memory mapping, and background color is set into black ARGB; (3) chromatic values of a plurality of adjacent points in the image are averaged, and the rendered mapping is zoomed into output size; (4) the mapping in the local video memory isexchanged to an internal memory mapping by the operation of the three-dimensional accelerated graphics port:; (5) a two-dimensional Alpha mixed function is used for leading the internal memory mapping to be drawn on a desktop, so as to lead the image to be displayed on the desktop. The method can realize that three-dimensional cartoon images can be rendered out clearly and smoothly in a real-timemanner on any desktop background, thereby achieving good expressive form, eliminating sawtooth form at the edge part of the three-dimensional image, leading the image display to be real and achievingsmooth transition effect.

Description

technical field [0001] The invention relates to the technical field of computer image processing, in particular to an image rendering method applied to computer desktops. Background technique [0002] The desktop of the computer presents various and complicated colors depending on the background or the different windows opened, and if a three-dimensional animation image can be displayed independently of the window, it must be able to adapt to different background colors. The traditional 3D image model rendering method is to use a 3D graphics acceleration interface (such as Direct3D) to directly render the image on the screen. Since this method only supports rectangular rendering, and operates directly on video memory without going through a two-dimensional rendering process, it is not suitable for rendering polygonal desktop images. [0003] General methods, such as the method of creating a window that supports transparent channels: (1) When creating and using a window, set...

AI Technical Summary

Problems solved by technology

[0004] The defect of the above method is that, since the 3D graphics acceleration interface does not support translucency during 3D rendering, even if there is a window that supports the transparent channel, the entire output graphics cannot be mixed with the background color, especially the edges. part, there will be obvious jaggedness

At the same time, because the character model directly rendered by the 3D graphics acceleration interface will appear jagged, the visual effect is not ideal, and the fusion with the background on the desktop is poor, making the jagged performance more obvious

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