Method for achieving real-time rendering of large-scale realistic volumetric cloud
A technology of rendering effects and cloud layers, which is used in the processing of 3D images, image data processing, instruments, etc.
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[0038] This embodiment combines figure 1 -6 The present invention is introduced in detail.
[0039] (1) First, establish a two-level LOD geometric model based on dynamic billboard (Billboard) technology, such as figure 1 shown. LOD 1 The multi-layer concentric circular grid model is used as the low-level LOD of the model. The number of grid layers is related to the thickness of the cloud layer, and has a direct impact on the rendering effect and rendering speed. The more layers, the better the final rendering effect. It also takes more time to render; fewer layers can improve rendering efficiency, but when viewed from a narrower angle, you will see gaps between layers. During the simulation process, trade-offs can be made according to specific situations. LOD 0 Using dynamic billboard technology, unlike the usual billboard around a fixed center of rotation and keeping the size of the billboard unchanged, the center of rotation of the dynamic billboard and the size of the ...
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