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Abstract
OpenGL refers to the definition of a cross programming language, cross platform
programming interface specification professional graphical program interface. It is
used for 3D image, is a powerful, easy to call the underlying graphics library.
Texture mapping is the process of mapping the texture pixels in the texture space
to the pixels in the screen space. In simple terms, is to paste an image on the surface
of three-dimensional objects to enhance the sense of reality, and can be combined
with the calculation of light, image mixing technology to form a number of very
beautiful results. In 3D graphics, texture mapping is the most widely used method.
However, the process of texture loading can affect the running speed of the
program, especially when the texture image is very large. How to properly manage
the texture and reduce unnecessary overhead is a problem that must be considered
when the system is optimized. OpenGL hardware can save multiple textures in
memory instead of loading them each time they are used, thus reducing the amount of
computation and increasing the speed.
Keywords:OpenGL, texture mapping, 3D, sense of reality