/*!
\page hdx_page_front Hdx : Hydra extensions
\if ( PIXAR_MFB_BUILD )
\mainpage  Hdx : Hydra extensions
\publicLib
\endif

\anchor hdx_mainpage

Collection of useful extensions for clients interested in using Hydra.

\section hdx_overview Overview

Hdx builds on the abstractions established by Hd, providing abstractions
and extensions useful for clients interested in using Hydra for imaging.

It currently houses common tasks, such as:
\li HdxColorizeTask
\li HdxFullscreenShader
\li HdxRenderSetupTask
\li HdxRenderTask
\li HdxSelectionTask
\li HdxShadowTask
\li HdxSimpleLightTask

It also houses HdxTaskController, which wraps the above tasks and provides 
setters for these tasks' params. It attempts to encapsulate some of the
task-specific boiler plate code when using Hydra to render a scene.

*/