Back component removing method and system based on off-screen rendering and storage medium

Abstract

The invention relates to a back component removing method and system based on off-screen rendering and a storage medium, and the method comprises the steps: obtaining rendering data of all componentsin a to-be-rendered model, loading all the components and all rendering data into a preset initial component container, and initializing the initial component container to obtain a rendering componentcontainer; obtaining a visible set diffusion array set according to the rendering component container, obtaining a plurality of target adjacent components according to the rendering component container and the visible set diffusion array set, and obtaining a potential visible set container according to all the target adjacent components; and performing off-screen rendering according to all targetadjacent components in the potential visible set container to obtain a plurality of rendering query frame data, updating the rendering component container according to all the rendering query frame data to obtain a target rendering component container, and completing back component elimination. When occlusion query and elimination are carried out, whether the componentsare occluded or not can bedistinguished at a higher recognition rate, the recognition effect is more remarkable, and the elimination effect is stable.

Description

technical field [0001] The present invention relates to the technical field of graphics rendering optimization, and in particular to a method, system and storage medium for removing rear components based on off-screen rendering. Background technique [0002] The elimination of back components means that in the process of rendering a large-volume 3D model, since the rendered volume greatly exceeds the rendering limit of current mainstream GPU rendering, a series of methods are used to eliminate the back of the rendered model at the software level. On-screen component geometry or component geometry that is not obvious from a distance is an optimization method for graphics rendering performance. [0003] At present, there are two mainstream solutions, one is based on the depth buffer (ie z-buffer) to do occlusion backside culling, the culling effect of this method is not very ideal, and when the transparent component is in front of the opaque component The problem of removing ...

AI Technical Summary

Problems solved by technology

The other is to use the WebGl API interface (WebGl API is a JavaScript API that can render high-performance interactive 3D and 2D graphics in any compatible web browser without using plug-ins) to do occlusion query and culling , this method needs to build a bounding box, and do an occlusion test based on the bounding box. However, the construction of the bounding box in most of our application scenarios is irregular, and the use of rules to build the bounding box will cause culling errors, resulting in inaccurate culling.

Therefore, when the above two methods are used to perform occlusion query and removal of back components in a large-volume model (such as hundreds of thousands of components), it cannot be 100% guaranteed to distinguish whether components are occluded, and the query effect of invisible components is poor. And after the occlusion query and culling, the ratio of the determined invisible set to the total components fluctuates greatly, which leads to a very unstable frame rate of the rendered frame

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