add EffectMode

stepmania/src/RageDisplay.h

@@ -210,6 +210,8 @@ public:
 	virtual void SetTextureWrapping( TextureUnit tu, bool b ) = 0;
 	virtual int GetMaxTextureSize() const = 0;
 	virtual void SetTextureFiltering( TextureUnit tu, bool b ) = 0;
+	virtual void SetEffectMode( EffectMode effect ) { }
+	virtual bool IsEffectModeSupported( EffectMode effect ) { return effect == EffectMode_Normal; }
 
 	bool SupportsRenderToTexture() const { return false; }
 	

stepmania/src/RageTypes.cpp

@@ -91,6 +91,15 @@ XToString( TextureMode );
 LuaXType( TextureMode );
 
 
+static const char *EffectModeNames[] =
+{
+	/* Normal blending.  All supported texture modes have their standard effects. */
+	"Normal",
+};
+XToString( EffectMode );
+LuaXType( EffectMode );
+
+
 static const char *ZTestModeNames[] =
 {
 	"Off",

stepmania/src/RageTypes.h

@@ -34,6 +34,14 @@ enum TextureMode
 };
 LuaDeclareType( TextureMode );
 
+enum EffectMode
+{
+	EffectMode_Normal,
+	NUM_EffectMode,
+	EffectMode_Invalid
+};
+LuaDeclareType( EffectMode );
+
 enum CullMode
 {
 	CULL_BACK,