Blit function cleanup

1 files changed, 2 insertions, 2 deletions

diff --git a/src/internal/subtitle/renderers/kitsubass.c b/src/internal/subtitle/renderers/kitsubass.c
index b6e8735..afac077 100644
--- a/src/internal/subtitle/renderers/kitsubass.c
+++ b/src/internal/subtitle/renderers/kitsubass.c
@@ -20,7 +20,7 @@ static void Kit_ProcessAssImage(SDL_Surface *surface, const ASS_Image *img) {
     unsigned char r = ((img->color) >> 24) & 0xFF;

     unsigned char g = ((img->color) >> 16) & 0xFF;

     unsigned char b = ((img->color) >>  8) & 0xFF;

-    unsigned char a = (img->color) & 0xFF;

+    unsigned char a = 0xFF - ((img->color) & 0xFF);

     unsigned char *src = img->bitmap;

     unsigned char *dst = surface->pixels;

     unsigned int x;

@@ -33,7 +33,7 @@ static void Kit_ProcessAssImage(SDL_Surface *surface, const ASS_Image *img) {
             dst[rx + 0] = r;

             dst[rx + 1] = g;

             dst[rx + 2] = b;

-            dst[rx + 3] = ((255 - a) * src[x]) >> 8;

+            dst[rx + 3] = (a * src[x]) >> 8;

         }

         src += img->stride;

         dst += surface->pitch;