Vertex index compression and decompression method, device and computer storage medium

Abstract

The embodiment of the present invention discloses a vertex index compression and decompression method, device, and computer storage medium; the method may include: according to the set difference range, the elements in the vertex index array are calculated according to the difference between adjacent elements The value is divided into one or more original index segments, and the number of vertex indices of each original index segment and the number of bits corresponding to the maximum difference between adjacent vertex indices in each original index segment are obtained; for each original index Fragment: Keep the first vertex index data unchanged, replace the subsequent vertex index data after the first vertex index data according to the difference between the adjacent vertex index data, and obtain the compressed index fragment corresponding to each original index fragment; All compressed index segments, the number of vertex indexes in each compressed index segment, and the number of bits corresponding to the maximum difference between adjacent vertex indices in the original index segment corresponding to each compressed index segment are in accordance with the original index segment The order of divisions is transferred to the GPU for storage in video memory.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of Graphics Processing Unit (GPU), and in particular, to a compression and decompression method and device for vertex indexes, and a computer storage medium. Background technique [0002] Open Graphics Library (OpenGL, Open Graphics Library) is a cross-language, cross-platform application programming interface (API, Application Programming Interface) for rendering 2D and 3D vector graphics, and it can call GPU functions. [0003] At present, in the process of calling the GPU through OpenGL to realize the image drawing function, the specific drawing mode can include the Draw_Arrays mode that directly calls the vertex array data for drawing, and the Draw-elements mode that grabs the vertex data through the vertex index. For the Draw-elements mode, in the specific implementation process, the CPU usually needs to specify the target vertex index, and the GPU uses the target vertex index to g...

AI Technical Summary

Problems solved by technology

When the number of vertex indexes is too large, it will take up more storage space to cache the vertex indexes, which will increase the number of times to read video memory and reduce processing efficiency.

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