This set of scenes each use a shader downloaded  from  ShaderToy.com
as a background to a single performer.  Because  the  VGHD  software
uses non-standard names for some of the shader inputs, and others do
not seem to be supported at all, it has been necessary to make a few
modifications to the downloaded sources.  However,  these  have been
kept to a minimum and generaly comprise

   Using #define to equivalence the VGHD and standard names

   Faking out iMouse and iChanneln references.

Occasionaly #defines have been used to allow shader parameters, such
as maximum interation counts, to be easily changed in order to lower
the resources used by a shader.  This is useful for scenes which use
a lot of resources and stress the host system leading to judder when
a scene is played.

Other than the minimal alterations to adapt  these  shaders  to  the
VGHD software TheEmu has not changed them.

TheEmu can take no credit for any of these shaders,  that belongs to
there original creators and the names used for the scenes do reflect
this.

Please note,  a few of these shaders make heavy use of GPU resources
which may result in jerky motion on "low end" machines. It may still
be possible to use them by reducing their requirements by  adjusting
the values of control parameters in the .fsh files and in some cases
this has specificaly been allowed for,  but other than that you will
have to change the body of the .fsh or simply not use the scene.