add RageTextureID::equal

stepmania/src/RageTexture.cpp

@@ -24,6 +24,19 @@ void RageTextureID::Init()
 	iColorDepth = TEXTUREMAN->GetTextureColorDepth();
 }
 
+bool RageTextureID::equal(const RageTextureID &rhs) const
+{
+	if(filename != rhs.filename) return false;
+	if(iMaxSize != rhs.iMaxSize) return false;
+	if(iMipMaps != rhs.iMipMaps) return false;
+	if(iAlphaBits != rhs.iAlphaBits) return false;
+	if(iColorDepth != rhs.iColorDepth) return false;
+	if(bDither != rhs.bDither) return false;
+	if(bStretch != rhs.bStretch) return false;
+	return true;
+}
+
+
 RageTexture::RageTexture( RageTextureID name )
 {
 //	LOG->Trace( "RageTexture::RageTexture()" );

stepmania/src/RageTexture.h

@@ -32,6 +32,8 @@ struct RageTextureID
 
 	/* Define an ordering so this can be used in a set<>. */
 	bool operator< (const RageTextureID &rhs) const	{ return filename < rhs.filename; }
+	bool equal(const RageTextureID &rhs) const;
+
 	void Init();
 
 	RageTextureID() { Init(); }