Using the newly-added function instead of a hack; should fix any potential BCS-analog problems

git-svn-id: svn://svn.code.sf.net/p/sc2/code/trunk@1878 8092fc87-c524-0410-9efc-e669fe64eaf9

sc2/src/sc2code/intro.c

@@ -196,6 +196,7 @@ Present_GenerateSIS (PRESENTATION_INPUT_STATE* pPIS)
 	HOT_SPOT hs;
 	int slot;
 	COUNT piece;
+	COLOR SisBack;
 
 	LockMutex (GraphicsLock);
 	OldContext = SetContext (OffScreenContext);
@@ -213,8 +214,11 @@ Present_GenerateSIS (PRESENTATION_INPUT_STATE* pPIS)
 			WANT_PIXMAP, r.extent.width, r.extent.height, 1
 			));
 	SetContextFGFrame (SisFrame);
-	SetContextForeGroundColor (BUILD_COLOR (MAKE_RGB15 (1, 1, 1), 7));
-	DrawFilledRectangle (&r);
+	SetContextClipRect (NULL_PTR);
+	SisBack = BUILD_COLOR (MAKE_RGB15 (1, 1, 1), 7);
+	SetContextBackGroundColor (SisBack);
+	ClearDrawable ();
+	SetFrameTransparentColor (SisFrame, SisBack);
 
 	s.frame = SetAbsFrameIndex (SkelFrame, 0);
 	s.origin.x = 0;
@@ -265,11 +269,6 @@ Present_GenerateSIS (PRESENTATION_INPUT_STATE* pPIS)
 	hs.y = r.extent.height / 2;
 	SetFrameHot (SisFrame, hs);
 
-	/* TODO: this is a hack to get it to work
-	 * anyone know how to do this better? */
-	TFB_DrawCanvas_SetTransparentColor (
-			((PFRAME_DESC)SisFrame)->image->NormalImg, 8, 8, 8, TRUE);
-
 	SetContext (OldContext);
 	FlushGraphics ();
 	UnlockMutex (GraphicsLock);