An RGBA32 3D texture with no mip maps and a resolution of 16 x 16 x 16 has a size of 128KB, but with a resolution of 256 x 256 x 256 it has a size of 512MB. The maximum resolution of a 3D texture is 2048 x 2048 x 2048.īe aware that the size of a 3D texture in memory and on disk increases quickly as its resolution increases. 3D textures are commonly used to simulate volumetric effects such as fog or smoke, to approximate a volumetric 3D mesh, or to store animated textures and blend between them smoothly. A 3D texture is a bitmap image that contains information in three dimensions rather than the standard two.
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