From 0c454763268d571be71d2c7a633f5bd855d0ad0b Mon Sep 17 00:00:00 2001
From: Holger Schemel <info@artsoft.org>
Date: Wed, 25 May 2016 21:36:30 +0200
Subject: [PATCH] removed using cross-fading buffer (not needed anymore after
 recent changes)

---
 src/libgame/sdl.c    |  2 +-
 src/libgame/sdl.h    |  2 +-
 src/libgame/system.c |  4 ++--
 src/libgame/system.h |  2 +-
 src/tools.c          | 31 +------------------------------
 5 files changed, 6 insertions(+), 35 deletions(-)

diff --git a/src/libgame/sdl.c b/src/libgame/sdl.c
index 48a3e374..a860eeb9 100644
--- a/src/libgame/sdl.c
+++ b/src/libgame/sdl.c
@@ -924,7 +924,7 @@ void PrepareFadeBitmap(int draw_target)
   FinalizeScreen(draw_target);
 }
 
-void SDLFadeRectangle(Bitmap *bitmap_cross, int x, int y, int width, int height,
+void SDLFadeRectangle(int x, int y, int width, int height,
 		      int fade_mode, int fade_delay, int post_delay,
 		      void (*draw_border_function)(void))
 {
diff --git a/src/libgame/sdl.h b/src/libgame/sdl.h
index 8c4ae076..4d70bfcd 100644
--- a/src/libgame/sdl.h
+++ b/src/libgame/sdl.h
@@ -453,7 +453,7 @@ void SDLFreeBitmapPointers(Bitmap *);
 void SDLCopyArea(Bitmap *, Bitmap *, int, int, int, int, int, int, int);
 void SDLBlitTexture(Bitmap *, int, int, int, int, int, int, int);
 void SDLFillRectangle(Bitmap *, int, int, int, int, Uint32);
-void SDLFadeRectangle(Bitmap *, int, int, int, int, int, int, int,
+void SDLFadeRectangle(int, int, int, int, int, int, int,
 		      void (*draw_border_function)(void));
 void SDLDrawSimpleLine(Bitmap *, int, int, int, int, Uint32);
 void SDLDrawLine(Bitmap *, int, int, int, int, Uint32);
diff --git a/src/libgame/system.c b/src/libgame/system.c
index 02938e35..4e53f626 100644
--- a/src/libgame/system.c
+++ b/src/libgame/system.c
@@ -671,7 +671,7 @@ void BlitBitmapTiled(Bitmap *src_bitmap, Bitmap *dst_bitmap,
   }
 }
 
-void FadeRectangle(Bitmap *bitmap_cross, int x, int y, int width, int height,
+void FadeRectangle(int x, int y, int width, int height,
 		   int fade_mode, int fade_delay, int post_delay,
 		   void (*draw_border_function)(void))
 {
@@ -679,7 +679,7 @@ void FadeRectangle(Bitmap *bitmap_cross, int x, int y, int width, int height,
   if (!InClippedRectangle(backbuffer, &x, &y, &width, &height, TRUE))
     return;
 
-  SDLFadeRectangle(bitmap_cross, x, y, width, height,
+  SDLFadeRectangle(x, y, width, height,
 		   fade_mode, fade_delay, post_delay, draw_border_function);
 }
 
diff --git a/src/libgame/system.h b/src/libgame/system.h
index 7abe7328..f155c212 100644
--- a/src/libgame/system.h
+++ b/src/libgame/system.h
@@ -1389,7 +1389,7 @@ void ReCreateBitmap(Bitmap **, int, int, int);
 void FreeBitmap(Bitmap *);
 void BlitBitmap(Bitmap *, Bitmap *, int, int, int, int, int, int);
 void BlitBitmapTiled(Bitmap *, Bitmap *, int, int, int, int, int, int, int,int);
-void FadeRectangle(Bitmap *bitmap, int, int, int, int, int, int, int,
+void FadeRectangle(int, int, int, int, int, int, int,
 		   void (*draw_border_function)(void));
 void FillRectangle(Bitmap *, int, int, int, int, Pixel);
 void ClearRectangle(Bitmap *, int, int, int, int);
diff --git a/src/tools.c b/src/tools.c
index ac83cfd5..ec059e12 100644
--- a/src/tools.c
+++ b/src/tools.c
@@ -598,26 +598,10 @@ void BackToFront_WithFrameDelay(unsigned int frame_delay_value)
   SetVideoFrameDelay(frame_delay_value_old);
 }
 
-static void FadeCrossSaveBackbuffer()
-{
-  BlitBitmap(backbuffer, bitmap_db_cross, 0, 0, WIN_XSIZE, WIN_YSIZE, 0, 0);
-}
-
-static void FadeCrossRestoreBackbuffer()
-{
-  int redraw_mask_last = redraw_mask;
-
-  BlitBitmap(bitmap_db_cross, backbuffer, 0, 0, WIN_XSIZE, WIN_YSIZE, 0, 0);
-
-  // do not change redraw mask when restoring backbuffer after cross-fading
-  redraw_mask = redraw_mask_last;
-}
-
 static void FadeExt(int fade_mask, int fade_mode, int fade_type)
 {
   static int fade_type_skip = FADE_TYPE_NONE;
   void (*draw_border_function)(void) = NULL;
-  Bitmap *bitmap = (fade_mode & FADE_TYPE_TRANSFORM ? bitmap_db_cross : NULL);
   int x, y, width, height;
   int fade_delay, post_delay;
 
@@ -632,18 +616,8 @@ static void FadeExt(int fade_mask, int fade_mode, int fade_type)
       return;
     }
 
-#if 1
-    FadeCrossSaveBackbuffer();
-#endif
-
     if (fading.fade_mode & FADE_TYPE_TRANSFORM)
-    {
-#if 0
-      FadeCrossSaveBackbuffer();
-#endif
-
       return;
-    }
   }
 
   redraw_mask |= fade_mask;
@@ -706,12 +680,9 @@ static void FadeExt(int fade_mask, int fade_mode, int fade_type)
     return;
   }
 
-  FadeRectangle(bitmap, x, y, width, height, fade_mode, fade_delay, post_delay,
+  FadeRectangle(x, y, width, height, fade_mode, fade_delay, post_delay,
 		draw_border_function);
 
-  if (fade_type == FADE_TYPE_FADE_OUT)
-    FadeCrossRestoreBackbuffer();
-
   redraw_mask &= ~fade_mask;
 }
 
-- 
2.34.1