From fe4ae2ae6dd24628a3141093d8cddea7b57812e1 Mon Sep 17 00:00:00 2001
From: Holger Schemel <info@artsoft.org>
Date: Sun, 7 Feb 2016 23:52:03 +0100
Subject: [PATCH] added re-initialization of textures after change of renderer

---
 src/init.c          | 11 ++++++-----
 src/init.h          |  1 +
 src/libgame/image.c | 14 ++++++++++++--
 src/libgame/image.h |  1 +
 src/libgame/sdl.c   |  5 +++++
 src/tools.c         |  1 +
 6 files changed, 26 insertions(+), 7 deletions(-)

diff --git a/src/init.c b/src/init.c
index e33a5adb..ca5d16b6 100644
--- a/src/init.c
+++ b/src/init.c
@@ -226,7 +226,7 @@ void InitBitmapPointers()
       graphic_info[i].bitmap = graphic_info[i].bitmaps[IMG_BITMAP_STANDARD];
 }
 
-static void InitGlobalAnimImages()
+void InitImageTextures()
 {
   int i, j, k;
 
@@ -241,8 +241,8 @@ static void InitGlobalAnimImages()
 	if (graphic == IMG_UNDEFINED)
 	  continue;
 
-	// create textures from images for fast GPU blitting, if possible
-	CreateImageTextures(graphic);
+	// (re)create textures from images for fast GPU blitting, if possible
+	ReCreateImageTextures(graphic);
       }
     }
   }
@@ -2026,8 +2026,9 @@ static void ReinitializeGraphics()
   print_timestamp_time("InitFontGraphicInfo");
   InitGlobalAnimGraphicInfo();		/* initialize global animation config */
   print_timestamp_time("InitGlobalAnimGraphicInfo");
-  InitGlobalAnimImages();		/* initialize global animation images */
-  print_timestamp_time("InitGlobalAnimImages");
+
+  InitImageTextures();			/* create textures for certain images */
+  print_timestamp_time("InitImageTextures");
 
   InitGraphicInfo_EM();			/* graphic mapping for EM engine */
   print_timestamp_time("InitGraphicInfo_EM");
diff --git a/src/init.h b/src/init.h
index 9c6185f7..ab14b75d 100644
--- a/src/init.h
+++ b/src/init.h
@@ -43,6 +43,7 @@ void KeyboardAutoRepeatOffUnlessAutoplay();
 
 void InitGfxBuffers();
 void InitGadgets();
+void InitImageTextures();
 
 void DisplayExitMessage(char *, va_list);
 
diff --git a/src/libgame/image.c b/src/libgame/image.c
index 2275bc73..16b4574d 100644
--- a/src/libgame/image.c
+++ b/src/libgame/image.c
@@ -351,11 +351,11 @@ void CreateImageWithSmallImages(int pos, int zoom_factor, int tile_size)
   setString(&img_info->leveldir, leveldir_current->identifier);
 }
 
-void CreateImageTextures(int pos)
+static void CreateImageTexturesExt(int pos, boolean force)
 {
   ImageInfo *img_info = getImageInfoEntryFromImageID(pos);
 
-  if (img_info == NULL || img_info->contains_textures)
+  if (img_info == NULL || (img_info->contains_textures && !force))
     return;
 
   CreateBitmapTextures(img_info->bitmaps);
@@ -363,6 +363,16 @@ void CreateImageTextures(int pos)
   img_info->contains_textures = TRUE;
 }
 
+void CreateImageTextures(int pos)
+{
+  CreateImageTexturesExt(pos, FALSE);
+}
+
+void ReCreateImageTextures(int pos)
+{
+  CreateImageTexturesExt(pos, TRUE);
+}
+
 void ScaleImage(int pos, int zoom_factor)
 {
   ImageInfo *img_info = getImageInfoEntryFromImageID(pos);
diff --git a/src/libgame/image.h b/src/libgame/image.h
index 627694c0..2d970823 100644
--- a/src/libgame/image.h
+++ b/src/libgame/image.h
@@ -68,6 +68,7 @@ void InitImageList(struct ConfigInfo *, int, struct ConfigTypeInfo *,
 void ReloadCustomImages();
 void CreateImageWithSmallImages(int, int, int);
 void CreateImageTextures(int);
+void ReCreateImageTextures(int);
 void ScaleImage(int, int);
 
 void FreeAllImages();
diff --git a/src/libgame/sdl.c b/src/libgame/sdl.c
index 0b2e1c16..0759b549 100644
--- a/src/libgame/sdl.c
+++ b/src/libgame/sdl.c
@@ -317,6 +317,11 @@ void SDLCreateBitmapTextures(Bitmap *bitmap)
   if (bitmap == NULL)
     return;
 
+  if (bitmap->texture)
+    SDL_DestroyTexture(bitmap->texture);
+  if (bitmap->texture_masked)
+    SDL_DestroyTexture(bitmap->texture_masked);
+
   bitmap->texture        = SDLCreateTextureFromSurface(bitmap->surface);
   bitmap->texture_masked = SDLCreateTextureFromSurface(bitmap->surface_masked);
 #endif
diff --git a/src/tools.c b/src/tools.c
index e2352d18..dbeba50c 100644
--- a/src/tools.c
+++ b/src/tools.c
@@ -8330,6 +8330,7 @@ void ChangeViewportPropertiesIfNeeded()
     // printf("::: init_video_buffer\n");
 
     InitVideoBuffer(WIN_XSIZE, WIN_YSIZE, DEFAULT_DEPTH, setup.fullscreen);
+    InitImageTextures();
   }
 
   if (init_gadgets_and_toons)
-- 
2.34.1