Terrain rendering method, device and equipment and readable storage medium

Abstract

The invention discloses a terrain rendering method which comprises the following steps: acquiring terrain image data, and performing quadtree segmentation on the terrain image data to obtain a plurality of terrain tiles; Creating a texture array of each terrain tile according to the layer-by-layer number, the image width and the image height of the terrain image data; Storing texture images and texture coordinates of all layers of the terrain image data in the current terrain tile through the texture array of each terrain tile; And performing terrain rendering according to the texture image and the texture coordinates in the texture array of each terrain tile. Wherein the texture array is not limited by the layer-by-layer number of the image, so that the limitation of a computer display card on the number of texture units can be avoided, layer-by-layer rendering is not needed in the rendering process, and the rendering efficiency is improved. The terrain rendering device and equipmentand the readable storage medium disclosed by the invention also have the above technical effects.

Description

technical field [0001] The present invention relates to the technical field of spatial geographic information, and more specifically, to a terrain rendering method, device, equipment and readable storage medium. Background technique [0002] Existing terrain rendering methods include: multi-texture rendering and multi-channel rendering. [0003] In the multi-texture rendering method, a terrain image layer corresponds to a texture unit, and a texture unit corresponds to a texture channel, and multiple textures are applied to the same polygon one by one in the texture operation pipeline. However, since the number of texture units supported by the computer graphics card is limited, when the multi-texture rendering method is adopted, the number of texture units supported by the computer graphics card needs to be considered, which limits the rendering. [0004] When using the multi-channel rendering method, first draw the first layer of terrain image, enable the blending functio...

AI Technical Summary

Problems solved by technology

Although the multi-channel rendering method is not limited by the number of texture units, it is affected by the number of terrain image layers. When the number of terrain image layers increases, the frame rate will be lower, which will result in lower rendering efficiency.

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