OpenGL (open graphics library)-based inverted image display processing device and method

Abstract

The invention relates to an OpenGL (open graphics library)-based inverted image display processing device and method. The method comprises the following steps: loading and calculating parameters of an object model, acquiring texture mapping pixel data and / or default vertex colour values of the object model; carrying out vertex position spatial transformation and cutting operation on the parameters of the object model; carrying out rasterization on the parameters of the object model after the vertex position spatial transformation and cutting operation are carried out; according to the texture mapping pixel data, carrying out segment colouring treatment on the parameters of the object model after the rasterization is carried out, so as to generate an inverted image of the object model; and outputting the inverted image to display equipment for display. The device and method in the invention has the advantages that inverted image effect of the object model is realized by parameter control in an OpenGL drawing process, the simulated reality is more vivid, the storage space is saved, and the computation load of a CPU (central processing unit) and the internal memory usage are reduced; the more efficient flexibility and adaptability are provided for the CPU, the preferable frame effect and the fluency are realized, and the burden of a UI (user interface) designer is alleviated.

Description

technical field [0001] The present invention relates to the technical field of image display, in particular to an OpenGL-based reflection display processing device and method. Background technique [0002] In 3D UI (User Interface, user interface) design or real-world scene simulation, sometimes it is necessary to simulate the reflection effect to make the quality visual effect more realistic and more in line with the real world, such as the reflection effect of flat glossy surfaces such as water and glass. OpenGL (Open Graphics Library, open graphics program interface) is a powerful, easy-to-call underlying graphics library, through which various reflection effects can be achieved. [0003] At present, there are mainly the following methods for using OpenGL to draw reflection effects: [0004] Method 1: Draw the object model once on the top and bottom of the reflection surface, and then draw a carefully crafted mask patch in front of the reflection, that is, in front of th...

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Problems solved by technology

[0006] Method 3: Similar to method 2, except that the reflection texture image is taken from the original texture image of the object model. After program processing, it has a hazy gradient fade effect and produces a reflection texture object, but this consumes CPU resources and is only easy to handle. It is very difficult to deal with the reflection of non-planar three-dimensional objects

[0007] Among the several existing reflection drawing methods mentioned above, although the first method is universal, it needs to recreate the mask according to the position of the object model or the scene. Due to the complicated production of the mask surface, the reflection drawing speed is slow; for the second method , the artist workload is heavy, the production process is inflexible, and the 3D model's mesh production is complicated, and texture coordinate splitting and mapping are required; Method 3 takes up too much CPU resources, consumes a lot of memory, and has many textures, and for non-planar Object Models Are Difficult to Handle

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