A method for processing 3D model data based on lod levels and related equipment

Abstract

The embodiment of the invention discloses an three-dimensional model data processing method based on LOD grade and related equipment, which are used for optimizing a rendering process of a terminal ona three-dimensional model. The method provided by the embodiment of the invention comprises the following steps: acquiring initial three-dimensional model data, wherein the initial three-dimensionalmodel data comprises original data; establishing at least two data lists by using combinations of different quantities of original data, wherein the at least two data lists are used for indicating position indexes of the original data; generating at least two pieces of index data according to the at least two data lists, the at least two pieces of index data comprising an association relationship,the association relationship being used for indicating that the at least two data lists are in one-to-one correspondence with at least two multi-level detail LOD levels; and generating target three-dimensional model data, wherein the target three-dimensional model data comprises the original data and the at least two pieces of index data.

Description

technical field [0001] The present application relates to the field of graphics rendering, in particular to a method for processing 3D model data based on LOD levels and related equipment. Background technique [0002] In the field of graphics rendering, a 3D model is composed of several vertices. Rendering a 3D model refers to performing graphics rendering based on the 3D model data corresponding to the 3D model. The 3D model data contains the vertex data and Index stream data, for the convenience of description, several consecutive vertices can be regarded as a primitive organization, each data in the index stream data corresponds to a certain vertex (or a certain primitive organization) in the vertex data in the vertex data The index (that is, the position information) in it is rendered. [0003] In the existing technology, when rendering a complex 3D model, based on efficiency considerations, if the 3D model is far away, it is not necessary to render so much primitive d...

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Problems solved by technology

[0004] However, for this graphics rendering method, the rendering process of a 3D model requires multiple copies of 3D model data corresponding to different LOD levels, that is, multiple copies of 3D model data need to be placed in the In the internal memory, the terminal memory occupied will be very large. If some models are selectively released, for example, only the 3D model data corresponding to the current LOD level is retained, the terminal IO overhead will be increased during the screen adjustment process, resulting in Terminal freeze, affecting user experience

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