Commit c93e3b36074ddb2ed986cbacc5e9d4f3a60db343
2021-04-28T10:43:28
Fixed bug #2881 - SDL_RLEsurface may encode RGB888 if it has no color key (Thanks Simon Hug) To encode with BLEND mode, it needs a valid alpha channel
diff --git a/src/video/SDL_RLEaccel.c b/src/video/SDL_RLEaccel.c
index 32cf8e0..3f3b62c 100644
--- a/src/video/SDL_RLEaccel.c
+++ b/src/video/SDL_RLEaccel.c
@@ -1423,9 +1423,12 @@ SDL_RLESurface(SDL_Surface * surface)
return -1;
}
- /* If we don't have colorkey or blending, nothing to do... */
- flags = surface->map->info.flags;
- if (!(flags & (SDL_COPY_COLORKEY | SDL_COPY_BLEND))) {
+ if (flags & SDL_COPY_COLORKEY) {
+ /* ok */
+ } else if ((flags & SDL_COPY_BLEND) && surface->format->Amask) {
+ /* ok */
+ } else {
+ /* If we don't have colorkey or blending, nothing to do... */
return -1;
}