[Jahshaka-cvs] openlibraries/effects/shaders histogram.cg, NONE, 1.1

[Goncalo N. M. de C. <gl...@us...>]

Update of /cvsroot/openlibraries/openlibraries/effects/shaders
In directory sc8-pr-cvs3.sourceforge.net:/tmp/cvs-serv15114/effects/shaders

Added Files:
	histogram.cg 
Log Message:
+ Cg histogram shader
+ offscreen support in ool (replication of oel which must go)

--- NEW FILE: histogram.cg ---

// fx - A compositing library representation.

// Copyright (C) 2005-2006 Visual Media FX Ltd.
// Released under the LGPL.
// For more information, see http://www.openlibraries.org.

half4 main( in half2 v_tex, uniform half min, uniform half max , uniform half4 channels, uniform samplerRECT inColor0 ) : COLOR
{
	half4 color = h4texRECT( inColor0, v_tex );
	
	half level = dot( channels, color );
	if( level < min || level >= max )
		discard;
		
	return color;
}