pig: implement rudimentary GNU Rocket integrationHEADmaster

This creates GNU Rocket tracks for all active float uniforms in
the loaded shaders.

Simply start a GNU Rocket editor listening on the standard port @
localhost, and the tracks should appear.

The automatic setting of these uniforms becomes overriden by the
track values, which can be annoying.

1 files changed, 11 insertions, 7 deletions

diff --git a/README b/README
index b8d21aa..777a25c 100644
--- a/README
+++ b/README
@@ -25,21 +25,25 @@ The set of uniforms pig wires up to the shaders are currently:
 	uniform float rand;
 ```
 
-alpha:	is always 1.f currently, this comes in by virtue of libstage integration.
-	when your shader is used as a shader-node w/libstage for instance, this
-	value would reflect stage_t.alpha, set via stage_set_alpha() or at stage_t
-	create time via stage_conf_t.alpha.
+alpha:	is always 1.f currently, this comes in by virtue of libstage
+	integration.  When your shader is used as a shader-node w/libstage for
+	instance, this value would reflect stage_t.alpha, set via
+	stage_set_alpha() or at stage_t create time via stage_conf_t.alpha.
 
 time:	time since program start in seconds.fraction
 
 T:	0.f - 1.f, cycled at 1HZ, intended for driving animation/effects.  The
 	time uniform can be considered absolute time, whereas this would be
-	relative to the shader's start, with a duration assumed of 1 second.
-	In the future there will probably be flags or something to set the
-	duration and range.
+	relative to the shader's start, with a duration assumed of 1 second.  In
+	the future there will probably be flags or something to set the duration
+	and range.
 
 color:	0.f - 1.f, a random color, randomized every cycle of T
 
 seed:	0.f - 1.f, a random seed, randomized every cycle of T
 
 rand:	0.f - 1.f, a random number, randomized every run of the shader
+
+For externally controlling uniforms, GNU Rocket support has been integrated as
+well.  The current implementation exposes any float type uniforms as tracks for
+external control.