What Are 3D Textures?

3D texture mapping is a 3D image processing technology that can greatly improve the authenticity of 3D images. Using this technology can reduce texture connection errors; generate cross-sectional display images in real time; have more realistic fog, smoke, fire, and animation effects; improve transformation Look at the authenticity of things from a perspective; simulate the natural light and shadow effects produced by moving light sources.

3D texture mapping is a 3D image processing technology that can greatly improve the authenticity of 3D images. The use of this technology can reduce texture connection errors; real-time generation of cross-sectional display maps; simulation of natural light and shadow effects generated by moving light sources; .. And these, under the condition of the graphics card hardware, only through "

Generally, the rendering technology of three-dimensional objects is divided into two technologies: surface rendering and volume rendering. The surface rendering technology has the same meaning as the literal meaning. Lighting, materials, etc. all occur on the surface of the object. This is also related to the surface representation technology (surface representation or border representation) of the three-dimensional object; this technology cannot draw the details inside the object, so It cannot usually be called a true three-dimensional representation.

For example, CT three-dimensional reconstruction of the human body can see the tissues and structures under the skin and even bones, but the technology of surface rendering is like taking photos of people. The photos cannot reflect the deep real three-dimensional structure of the human body, and cannot give doctors more Judgment information; like mineral deposits, we can roughly infer its true three-dimensional structure through well exploration data.

3D texture map loading texture

The first necessary step in applying texture mapping to geometry is to load the texture into memory. Once loaded, this texture becomes part of the current texture state.

There are three functions for loading textures, which correspond to one-dimensional, two-dimensional, and three-dimensional textures.

3D texture map texture object

Texture objects are used to store texture data for use at any time. With the texture object created, multiple textures can be loaded into memory at one time so that any one of them can be referenced at any time during scene drawing ^[2] .