add glow modes

stepmania/src/Actor.cpp

@@ -690,6 +690,13 @@ void Actor::Command( CString sCommandString )
 		/* Add left/right/top/bottom for alpha if needed. */
 		else if( sName=="diffusealpha" )	{ for(int i = 0; i < 4; ++i) { RageColor c = GetDiffuses( i ); c.a = fParam(1); SetDiffuses( i, c ); } }
 		else if( sName=="glow" )			SetGlow( RageColor(fParam(1),fParam(2),fParam(3),fParam(4)) );
+		else if( sName=="glowmode" ) {
+			if(!sParam(1).CompareNoCase("whiten"))
+				SetGlowMode( GLOW_WHITEN );
+			else if(!sParam(1).CompareNoCase("brighten"))
+				SetGlowMode( GLOW_BRIGHTEN );
+			else ASSERT(0);
+		}
 		else if( sName=="rotationx" )		SetRotationX( fParam(1) );
 		else if( sName=="rotationy" )		SetRotationY( fParam(1) );
 		else if( sName=="rotationz" )		SetRotationZ( fParam(1) );
@@ -770,6 +777,7 @@ void Actor::TweenState::Init()
 	for(int i=0; i<4; i++) 
 		diffuse[i] = RageColor( 1, 1, 1, 1 );
 	glow = RageColor( 1, 1, 1, 0 );
+	glowmode = GLOW_WHITEN;
 }
 
 void Actor::TweenState::MakeWeightedAverage( TweenState& average_out, const TweenState& ts1, const TweenState& ts2, float fPercentBetween )

stepmania/src/Actor.h

@@ -46,6 +46,7 @@ public:
 		RageVector3 scale;
 		RageColor   diffuse[4];
 		RageColor   glow;
+		GlowMode	glowmode;
 
 		void Init();
 		static void MakeWeightedAverage( TweenState& average_out, const TweenState& ts1, const TweenState& ts2, float fPercentBetween );
@@ -132,6 +133,8 @@ public:
 	virtual RageColor GetDiffuses( int i )				{ return DestTweenState().diffuse[i]; };
 	virtual void SetGlow( RageColor c )					{ DestTweenState().glow = c; };
 	virtual RageColor GetGlow()							{ return DestTweenState().glow; };
+	virtual void SetGlowMode( GlowMode m )				{ DestTweenState().glowmode = m; };
+	virtual GlowMode GetGlowMode()						{ return DestTweenState().glowmode; };
 
 
 	virtual void BeginTweening( float time, TweenType tt = TWEEN_LINEAR );

stepmania/src/BitmapText.cpp

@@ -338,7 +338,7 @@ void BitmapText::DrawPrimitives()
 	/* render the glow pass */
 	if( m_temp.glow.a > 0.0001f )
 	{
-		DISPLAY->SetTextureModeGlow();
+		DISPLAY->SetTextureModeGlow(m_temp.glowmode);
 
 		for( unsigned i=0; i<verts.size(); i++ )
 			verts[i].c = m_temp.glow;

stepmania/src/RageDisplay.cpp

@@ -913,13 +913,18 @@ void RageDisplay::SetBlendMode(int src, int dst)
 	glBlendFunc( GLenum(src), GLenum(dst) );
 }
 
-void RageDisplay::SetTextureModeGlow()
+void RageDisplay::SetTextureModeGlow(GlowMode m)
 {
-	if(!m_oglspecs->EXT_texture_env_combine) {
+	if(m == GLOW_WHITEN && !m_oglspecs->EXT_texture_env_combine)
+		m = GLOW_BRIGHTEN; /* we can't do GLOW_WHITEN */
+
+	switch(m)
+	{
+	case GLOW_BRIGHTEN:
 		SetBlendMode( GL_SRC_ALPHA, GL_ONE );
 		return;
-	}
 
+	case GLOW_WHITEN:
 		/* Source color is the diffuse color only: */
 		glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE_EXT);
 		glTexEnvi(GL_TEXTURE_ENV, GLenum(GL_COMBINE_RGB_EXT), GL_REPLACE);
@@ -931,6 +936,8 @@ void RageDisplay::SetTextureModeGlow()
 		glTexEnvi(GL_TEXTURE_ENV, GLenum(GL_SOURCE0_ALPHA_EXT), GL_PRIMARY_COLOR_EXT);
 		glTexEnvi(GL_TEXTURE_ENV, GLenum(GL_OPERAND1_ALPHA_EXT), GL_SRC_ALPHA);
 		glTexEnvi(GL_TEXTURE_ENV, GLenum(GL_SOURCE1_ALPHA_EXT), GL_TEXTURE);
+		return;
+	}
 }
 
 void RageDisplay::SetBlendModeNormal()

stepmania/src/RageDisplay.h

@@ -61,7 +61,7 @@ public:
 	void SetTexture( RageTexture* pTexture );
 
 	void SetTextureModeModulate();
-	void SetTextureModeGlow();
+	void SetTextureModeGlow(GlowMode m = GLOW_WHITEN );
 	void SetBlendModeNormal();
 	void SetBlendModeAdd();
 	bool ZBufferEnabled() const;

stepmania/src/Sprite.cpp

@@ -321,7 +321,7 @@ void Sprite::DrawPrimitives()
 	//////////////////////
 	if( m_temp.glow.a > 0.0001f )
 	{
-		DISPLAY->SetTextureModeGlow();
+		DISPLAY->SetTextureModeGlow(m_temp.glowmode);
 		v[0].c = v[1].c = v[2].c = v[3].c = m_temp.glow;
 		DISPLAY->DrawQuad( v );
 	}