CopySrc blend mode

stepmania/src/RageDisplay_D3D.cpp

@@ -1211,6 +1211,10 @@ void RageDisplay_D3D::SetBlendMode( BlendMode mode )
 		g_pd3dDevice->SetRenderState( D3DRS_SRCBLEND,  D3DBLEND_SRCALPHA );
 		g_pd3dDevice->SetRenderState( D3DRS_DESTBLEND, D3DBLEND_ONE );
 		break;
+	case BLEND_COPY_SRC:
+		g_pd3dDevice->SetRenderState( D3DRS_SRCBLEND,  D3DBLEND_ONE );
+		g_pd3dDevice->SetRenderState( D3DRS_DESTBLEND, D3DBLEND_ZERO );
+		break;
 	case BLEND_NO_EFFECT:
 		g_pd3dDevice->SetRenderState( D3DRS_SRCBLEND,  D3DBLEND_ZERO );
 		g_pd3dDevice->SetRenderState( D3DRS_DESTBLEND, D3DBLEND_ONE );

stepmania/src/RageDisplay_OGL.cpp

@@ -1633,6 +1633,10 @@ void RageDisplay_OGL::SetBlendMode( BlendMode mode )
 	case BLEND_ADD:
 		iSourceRGB = GL_SRC_ALPHA; iDestRGB = GL_ONE;
 		break;
+	case BLEND_COPY_SRC:
+		iSourceRGB = GL_ONE; iDestRGB = GL_ZERO;
+		iSourceAlpha = GL_ONE; iDestAlpha = GL_ZERO;
+		break;
 	case BLEND_WEIGHTED_MULTIPLY:
 		/* output = 2*(dst*src).  0.5,0.5,0.5 is identity; darker colors darken the image,
 		 * and brighter colors lighten the image. */

stepmania/src/RageTypes.cpp

@@ -74,6 +74,7 @@ static const char *BlendModeNames[] =
 {
 	"Normal",
 	"Add",
+	"CopySrc",
 	"WeightedMultiply",
 	"InvertDest",
 	"NoEffect"

stepmania/src/RageTypes.h

@@ -9,6 +9,7 @@ enum BlendMode
 {
 	BLEND_NORMAL,
 	BLEND_ADD,
+	BLEND_COPY_SRC,
 	BLEND_WEIGHTED_MULTIPLY,
 	BLEND_INVERT_DEST,
 	BLEND_NO_EFFECT,