line width is a float in OpenGL for line AA

stepmania/src/RageDisplay.h

@@ -234,7 +234,7 @@ public:
 
 	// hacks for cell-shaded models
 	virtual void SetPolygonMode( PolygonMode pm ) {}
-	virtual void SetLineWidth( int iWidth ) {}
+	virtual void SetLineWidth( float fWidth ) {}
 
 	enum GraphicsFileFormat
 	{

stepmania/src/RageDisplay_OGL.cpp

@@ -1826,9 +1826,9 @@ void RageDisplay_OGL::SetPolygonMode( PolygonMode pm )
 	glPolygonMode( GL_FRONT_AND_BACK, m );
 }
 
-void RageDisplay_OGL::SetLineWidth( int iWidth )
+void RageDisplay_OGL::SetLineWidth( float fWidth )
 {
-	glLineWidth( iWidth );
+	glLineWidth( fWidth );
 }
 
 CString RageDisplay_OGL::GetTextureDiagnostics( unsigned id ) const

stepmania/src/RageDisplay_OGL.h

@@ -67,7 +67,7 @@ public:
 
 	// hacks for cell-shaded models
 	virtual void SetPolygonMode( PolygonMode pm );
-	virtual void SetLineWidth( int iWidth );
+	virtual void SetLineWidth( float fWidth );
 
 	CString GetTextureDiagnostics( unsigned id ) const;