Fixed bug #616

 rainer canavan      2009-03-29 12:30:12 PDT

add default visual to this->hidden->visuals

X11_SetIcon appears to have problems getting the correct bpp for the default
visual of my screen. With larger icons, this causes a segfault somewhere in
libX11. Instead of adding the default visual to the internal list, I can work
around this problem (both the segfault and the distortion) by setting bpp to 32
before sicon = SDL_CreateRGBSurface(...) in X11_SetIcon, although with this
patch, it stays at 24.

--HG--
branch : SDL-1.2
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/branches/SDL-1.2%403925

src/video/x11/SDL_x11modes.c

@@ -338,6 +338,18 @@ static void move_cursor_to(_THIS, int x, int y)
     XWarpPointer(SDL_Display, None, SDL_Root, 0, 0, 0, 0, x, y);
 }
 
+static int add_default_visual(_THIS)
+{
+    int i;
+    int n = this->hidden->nvisuals;
+    for (i=0; i<n; i++) {
+        if (this->hidden->visuals[i].visual == DefaultVisual(SDL_Display, SDL_Screen)) return n;
+    }
+    this->hidden->visuals[n].depth = DefaultDepth(SDL_Display, SDL_Screen);;
+    this->hidden->visuals[n].visual = DefaultVisual(SDL_Display, SDL_Screen);;
+    this->hidden->nvisuals++;
+    return(this->hidden->nvisuals);
+}
 static int add_visual(_THIS, int depth, int class)
 {
     XVisualInfo vi;
@@ -801,6 +813,7 @@ int X11_GetVideoModes(_THIS)
                                 add_visual(this, depth_list[i], StaticColor);
                         }
                 }
+                add_default_visual(this);
         }
         if ( this->hidden->nvisuals == 0 ) {
             SDL_SetError("Found no sufficiently capable X11 visuals");