*SDL project

1 files changed, 15 insertions, 1 deletions

diff --git a/Source/3rdParty/SDL2/src/video/SDL_surface.c b/Source/3rdParty/SDL2/src/video/SDL_surface.c
index 719f831..1b2ee6c 100644
--- a/Source/3rdParty/SDL2/src/video/SDL_surface.c
+++ b/Source/3rdParty/SDL2/src/video/SDL_surface.c
@@ -37,7 +37,7 @@ SDL_COMPILE_TIME_ASSERT(surface_size_assumptions,
 /*
  * Calculate the pad-aligned scanline width of a surface
  */
-int
+static int
 SDL_CalculatePitch(Uint32 format, int width)
 {
     int pitch;
@@ -292,6 +292,20 @@ SDL_SetColorKey(SDL_Surface * surface, int flag, Uint32 key)
     return 0;
 }
 
+SDL_bool
+SDL_HasColorKey(SDL_Surface * surface)
+{
+    if (!surface) {
+        return SDL_FALSE;
+    }
+
+    if (!(surface->map->info.flags & SDL_COPY_COLORKEY)) {
+        return SDL_FALSE;
+    }
+
+	return SDL_TRUE;
+}
+
 int
 SDL_GetColorKey(SDL_Surface * surface, Uint32 * key)
 {