What's "graphics software stack"?

Should be a pretty low level conception, would someon开发者_开发技巧e explain please?

"Graphics software stack" is not a familiar term as such, but it seems reasonable in light of software stacks in general.

A software stack is a set of software packages that work together to get something done; typically they are layered one on top of another, i.e. dependencies between the components are usually one-way, although not necessarily (see LAMP stack).

An example of a graphics software stack might include a scene graph framework like Google's O3D, which is written in Javascript; the scene graph framework uses a low-level library like WebGL (implemented as part of a browser); and the latter in turn can use shaders written in GLSL (which run on a graphics card).