From: Holger Schemel <info@artsoft.org>
Date: Thu, 26 Apr 2018 17:12:26 +0000 (+0200)
Subject: fixed potential bug with alpha blending when using virtual buttons
X-Git-Tag: 4.1.1.0~180
X-Git-Url: https://git.artsoft.org/?p=rocksndiamonds.git;a=commitdiff_plain;h=0bd8e1ee6077beacfa455dbe1e93aa9de726a797

fixed potential bug with alpha blending when using virtual buttons
---

diff --git a/src/libgame/sdl.c b/src/libgame/sdl.c
index 34c40044..07064a4b 100644
--- a/src/libgame/sdl.c
+++ b/src/libgame/sdl.c
@@ -2992,7 +2992,7 @@ static void DrawTouchInputOverlay()
   static int width = 0, height = 0;
   static int alpha_max = SDL_ALPHA_OPAQUE / 2;
   static int alpha_step = 5;
-  static int alpha_last = 0;
+  static int alpha_last = -1;
   static int alpha = 0;
   boolean active = (overlay.enabled && overlay.active);
 
@@ -3042,7 +3042,6 @@ static void DrawTouchInputOverlay()
     SDL_FreeSurface(surface);
 
     SDL_SetTextureBlendMode(texture, SDL_BLENDMODE_BLEND);
-    SDL_SetTextureAlphaMod(texture, alpha_max);
 
     initialized = TRUE;
   }