Fixed bug #33; Crossfades are consistent and don't glitch anymore

git-svn-id: svn://svn.code.sf.net/p/sc2/code/trunk@891 8092fc87-c524-0410-9efc-e669fe64eaf9

sc2/ChangeLog

@@ -1,4 +1,7 @@
 Changes towards version 0.3:
+- Crossfade code now explicitly caches the screen to transition from, and
+  thus no longer glitches.  The code needed a slight rewrite, but this
+  does fix bug #33 -McMartin
 - Melee scaling is now trilinear by default, but it's still possible to
   choose nearest neighbour with --meleescale; fixes #34 -Mika
 - Minimum scaling extent is now 1,1; fixes mostly small-objects-disappearing

sc2/src/sc2code/battle.c

@@ -208,20 +208,23 @@ first_time = (BOOLEAN)(LOBYTE (GLOBAL (CurrentActivity)) == IN_HYPERSPACE);
 		do
 		{
 			extern UWORD nth_frame;
+			RECT r;
 
+			if (first_time)
+			{
+				r.corner.x = SIS_ORG_X;
+				r.corner.y = SIS_ORG_Y;
+				r.extent.width = SIS_SCREEN_WIDTH;
+				r.extent.height = SIS_SCREEN_HEIGHT;
+				SetTransitionSource (&r);
+			}
 			BatchGraphics ();
 			if (LOBYTE (GLOBAL (CurrentActivity)) == IN_HYPERSPACE)
 				SeedUniverse ();
 			RedrawQueue (TRUE);
 			if (first_time)
 			{
-	RECT r;
-	
 				first_time = FALSE;
-	r.corner.x = SIS_ORG_X;
-	r.corner.y = SIS_ORG_Y;
-	r.extent.width = SIS_SCREEN_WIDTH;
-	r.extent.height = SIS_SCREEN_HEIGHT;
 				ScreenTransition (3, &r);
 			}
 			UnbatchGraphics ();

sc2/src/sc2code/comm.c

@@ -1492,7 +1492,9 @@ static BOOLEAN
 DoCommunication (INPUT_STATE InputState, PENCOUNTER_STATE pES)
 {
 	if (!(CommData.AlienTransitionDesc.AnimFlags & (TALK_INTRO | TALK_DONE)))
+	{
 		AlienTalkSegue ((COUNT)~0);
+	}
 
 	if (GLOBAL (CurrentActivity) & CHECK_ABORT)
 		;
@@ -1719,6 +1721,7 @@ HailAlien (void)
 		r.corner.y = SIS_ORG_Y;
 		r.extent.width = SIS_SCREEN_WIDTH;
 
+		SetTransitionSource (NULL);
 		BatchGraphics ();
 		if (LOBYTE (GLOBAL (CurrentActivity)) == WON_LAST_BATTLE)
 		{

sc2/src/sc2code/credits.c

@@ -84,6 +84,7 @@ FreeHyperData ();
 	TimeIn = GetTimeCounter ();
 	for (i = 1; i < NUM_CREDITS; ++i)
 	{
+		SetTransitionSource (&r);
 		BatchGraphics ();
 		s.frame = f[0];
 		DrawStamp (&s);

sc2/src/sc2code/encount.c

@@ -189,6 +189,7 @@ DestroyMusic (MR);
 	SetSemaphore (GraphicsSem);
 	s.origin.x = s.origin.y = 0;
 
+	SetTransitionSource (NULL);
 	BatchGraphics ();
 	
 	SetContextBackGroundColor (BLACK_COLOR);
@@ -293,6 +294,7 @@ SetSemaphore (GraphicsSem);
 
 	UnbatchGraphics ();
 	DestroyDrawable (ReleaseDrawable (SegueFrame));
+	ScreenTransition (3, NULL);
 
 	SetResourceIndex (hOldIndex);
 

sc2/src/sc2code/gameopt.c

@@ -909,6 +909,7 @@ DoPickGame (INPUT_STATE InputState, PMENU_STATE pMS)
 		}
 
 		SetSemaphore (GraphicsSem);
+		SetTransitionSource (NULL);
 		BatchGraphics ();
 Restart:
 		SetContext (SpaceContext);
@@ -994,12 +995,7 @@ if (pSolarSysState)
 			}
 			else
 			{
-				extern BOOLEAN
+				extern BOOLEAN LoadGame (COUNT which_game, SUMMARY_DESC *summary_desc);
-						LoadGame
-						(COUNT
-						which_game,
-						SUMMARY_DESC
-						*summary_desc);
 
 				ConfirmSaveLoad (0);
 				if (LoadGame ((COUNT)pMS->CurState, NULL_PTR))
@@ -1029,7 +1025,9 @@ pMS->ModuleFrame = 0;
 
 		if (NewState != pMS->CurState)
 		{
+			RECT r;
 			SetSemaphore (GraphicsSem);
+
 			BatchGraphics ();
 			if (((SUMMARY_DESC *)pMS->CurString)[NewState].year_index != 0)
 			{
@@ -1070,26 +1068,22 @@ ChangeGameSelection:
 			{
 				if (first_time)
 				{
-					RECT r;
-	
 					r.corner.x = SIS_ORG_X;
 					r.corner.y = SIS_ORG_Y;
 					r.extent.width = SIS_SCREEN_WIDTH;
 					r.extent.height = SIS_SCREEN_HEIGHT;
+
 					ScreenTransition (3, &r);
 				}
 				UnbatchGraphics ();
 			}
 
-			{
-				RECT r;
-				
 			r.corner.x = 3 + (NewState * 21);
 			r.corner.y = 176;
 			r.extent.width = 18;
 			r.extent.height = 18;
 			SetFlashRect (&r, (FRAME)0);
-			}
+
 			ClearSemaphore (GraphicsSem);
 		}
 	}
@@ -1153,6 +1147,7 @@ PickGame (PMENU_STATE
 				|| !(pSolarSysState
 				&& pSolarSysState->MenuState.Initialized < 3))
 		{
+			SetTransitionSource (&DlgRect);
 			BatchGraphics ();
 			DrawStamp(&DlgStamp);
 			ScreenTransition (3, &DlgRect);

sc2/src/sc2code/libs/graphics/gfx_common.h

@@ -56,6 +56,7 @@ void SetGraphicGrabOther (int grab_other);
 void SetGraphicScale (int scale);
 int  GetGraphicScale (void);
 void SetGraphicUseOtherExtra (int other);
+void SetTransitionSource (PRECT pRect);
 void ScreenTransition (int transition, PRECT pRect);
 
 extern float FrameRate;

sc2/src/sc2code/libs/graphics/sdl/3do_funcs.c

@@ -114,6 +114,12 @@ transition_task_func (void *data)
 	return 0;
 }
 
+void
+SetTransitionSource (PRECT pRect)
+{
+	TFB_DrawScreen_Copy(pRect, TFB_SCREEN_MAIN, TFB_SCREEN_TRANSITION);
+}
+
 // Status: Implemented
 void
 ScreenTransition (int TransType, PRECT pRect)
@@ -140,8 +146,6 @@ ScreenTransition (int TransType, PRECT pRect)
 		TransitionClipRect.h = ScreenHeight;
 	}
 
-	SDL_BlitSurface (SDL_Screen, &TransitionClipRect, TransitionScreen, &TransitionClipRect);
-
 #ifdef HAVE_OPENGL
 	if (GraphicsDriver == TFB_GFXDRIVER_SDL_OPENGL)
 	{

sc2/src/sc2code/outfit.c

@@ -600,6 +600,7 @@ DoOutfit (INPUT_STATE InputState, PMENU_STATE pMS)
 					LoadGraphic (OUTFIT_PMAP_ANIM)
 					);
 
+			SetTransitionSource (NULL);
 			BatchGraphics ();
 			DrawSISFrame ();
 			SetSemaphore(GraphicsSem);

sc2/src/sc2code/planets/lander.c

@@ -1515,6 +1515,7 @@ InitPlanetSide (void)
 		SetContextClipRect (&r);
 		SetContextClipping (TRUE);
 
+		SetTransitionSource (&r);
 		BatchGraphics ();
 		
 		{
@@ -1856,6 +1857,7 @@ ReturnToOrbit (PRECT pRect)
 	OldContext = SetContext (SpaceContext);
 	SetContextClipRect (pRect);
 
+	SetTransitionSource (pRect);
 	BatchGraphics ();
 	DrawStarBackGround (TRUE);
 	SetContext (ScanContext);

sc2/src/sc2code/planets/planets.c

@@ -64,6 +64,7 @@ LoadPlanet (BOOLEAN IsDefined)
 	SetSemaphore (GraphicsSem);
 
 	BatchGraphics ();
+	SetTransitionSource (NULL);
 	if (!(LastActivity & CHECK_LOAD))
 		DrawStarBackGround (TRUE);
 
@@ -176,7 +177,7 @@ LoadPlanet (BOOLEAN IsDefined)
 		BatchGraphics();
 		DrawPlanet (SIS_SCREEN_WIDTH - MAP_WIDTH, SIS_SCREEN_HEIGHT - MAP_HEIGHT, 0, 0);
 		UnbatchGraphics();
-		ScreenTransition (3, &r);
+		ScreenTransition (3, &r);  // How does this work?
 		UnbatchGraphics ();
 		LoadIntoExtraScreen (&r);
 		ClearSemaphore (GraphicsSem);

sc2/src/sc2code/planets/pstarmap.c

@@ -268,6 +268,11 @@ DrawStarMap (COUNT race_update, PRECT pClipRect)
 		SetFrameHot (Screen,
 				MAKE_HOT_SPOT (pClipRect->corner.x, pClipRect->corner.y));
 	}
+
+	if (transition_pending)
+	{
+		SetTransitionSource (NULL);
+	}
 	BatchGraphics ();
 	
 	which_space = GET_GAME_STATE (ARILOU_SPACE_SIDE);

sc2/src/sc2code/planets/solarsys.c

@@ -490,6 +490,7 @@ ShowPlanet:
 					GenerateMoons ();
 
 					NewWaitPlanet = 0;
+					SetTransitionSource (NULL);
 					BatchGraphics ();
 					SetGraphicGrabOther (1);
 					DrawSystem (pSolarSysState->pBaseDesc->pPrevDesc->radius, TRUE);
@@ -673,7 +674,12 @@ void
 ZoomSystem (void)
 {
 	RECT r;
+	r.corner.x = SIS_ORG_X;
+	r.corner.y = SIS_ORG_Y;
+	r.extent.width = SIS_SCREEN_WIDTH;
+	r.extent.height = SIS_SCREEN_HEIGHT;
 
+	SetTransitionSource (&r);
 	BatchGraphics ();
 	if (pSolarSysState->pBaseDesc == pSolarSysState->MoonDesc)
 		DrawSystem (pSolarSysState->pBaseDesc->pPrevDesc->radius, TRUE);
@@ -684,10 +690,6 @@ ZoomSystem (void)
 
 		DrawSystem (pSolarSysState->SunDesc[0].radius, FALSE);
 	}
-	r.corner.x = SIS_ORG_X;
-	r.corner.y = SIS_ORG_Y;
-	r.extent.width = SIS_SCREEN_WIDTH;
-	r.extent.height = SIS_SCREEN_HEIGHT;
 	ScreenTransition (3, &r);
 	UnbatchGraphics ();
 	LoadIntoExtraScreen (&r);
@@ -974,9 +976,10 @@ ScaleSystem (void)
 	CONTEXT OldContext;
 	
 	OldContext = SetContext (SpaceContext);
+	GetContextClipRect (&r);
+	SetTransitionSource (&r);
 	BatchGraphics ();
 	DrawSystem (pSolarSysState->SunDesc[0].radius, FALSE);
-	GetContextClipRect (&r);
 	ScreenTransition (3, &r);
 	UnbatchGraphics ();
 	LoadIntoExtraScreen (&r);
@@ -1085,8 +1088,8 @@ TheMess:
 		if (old_radius)
 			ScaleSystem ();
 
+		SetTransitionSource (NULL);
 		BatchGraphics ();
-		
 		if (!(draw_sys_flags & DRAW_REFRESH)) // don't repair from Extra or draw ship if forcing repair
 		{
 			CONTEXT OldContext;
@@ -1405,6 +1408,7 @@ LoadLanderData ();
 
 	if (pSolarSysState->MenuState.Initialized == 0)
 	{
+		SetTransitionSource (NULL);
 		BatchGraphics ();
 		draw_sys_flags |= UNBATCH_SYS;
 		

sc2/src/sc2code/shipyard.c

@@ -1205,6 +1205,7 @@ DoShipyard (INPUT_STATE InputState, PMENU_STATE pMS)
 
 			pMS->hMusic = LoadMusicInstance (SHIPYARD_MUSIC);
 
+			SetTransitionSource (NULL);
 			BatchGraphics ();
 
 			DrawSISFrame ();

sc2/src/sc2code/starbase.c

@@ -314,6 +314,7 @@ s.origin.x = SAFE_X, s.origin.y = SAFE_Y + 4;
 		pMS->hMusic = LoadMusicInstance (STARBASE_MUSIC);
 
 		SetSemaphore (GraphicsSem);
+		SetTransitionSource (NULL);
 		BatchGraphics ();
 		SetContextBackGroundColor (BLACK_COLOR);
 		ClearDrawable ();