-* A GPU capable of running GLSL fragment shaders,
- processing floating-point textures, and a few other things (all are
- part of OpenGL 3.0 or newer, although most OpenGL 2.0 cards also
- have what's needed through extensions). If your machine is less than five
- years old _and you have the appropriate drivers_, you're home free.
-* The [Eigen 3] and [Google Test] libraries. (The library itself
- depends only on the former, but you probably want to run the unit tests.)
+* A GPU capable of running OpenGL 3.0 or newer. GLES3 (for mobile devices)
+ will also work.
+* The [Eigen 3], [FFTW3] and [Google Test] libraries. (The library itself
+ does not depend on the latter, but you probably want to run the unit tests.)