diff --git a/src/video/SDL_blit_0.c b/src/video/SDL_blit_0.c
index ff3026e590..0ae78669c5 100644
--- a/src/video/SDL_blit_0.c
+++ b/src/video/SDL_blit_0.c
@@ -604,11 +604,8 @@ SDL_FORCE_INLINE void BlitBto4Key(SDL_BlitInfo *info, const Uint32 srcbpp)
     }
 }
 
-SDL_FORCE_INLINE void BlitBtoNAlpha(SDL_BlitInfo *info, const Uint32 srcbpp)
+static void BlitBtoNAlpha(SDL_BlitInfo *info)
 {
-    const Uint32 mask = (1 << srcbpp) - 1;
-    const Uint32 align = (8 / srcbpp) - 1;
-
     int width = info->dst_w;
     int height = info->dst_h;
     Uint8 *src = info->src;
@@ -616,15 +613,17 @@ SDL_FORCE_INLINE void BlitBtoNAlpha(SDL_BlitInfo *info, const Uint32 srcbpp)
     int srcskip = info->src_skip;
     int dstskip = info->dst_skip;
     const SDL_Color *srcpal = info->src_pal->colors;
+    const SDL_PixelFormatDetails *srcfmt = info->src_fmt;
     const SDL_PixelFormatDetails *dstfmt = info->dst_fmt;
-    int dstbpp;
+    int srcbpp, dstbpp;
     int c;
-    Uint32 pixel;
+    Uint32 pixel, mask, align;
     unsigned sR, sG, sB;
     unsigned dR, dG, dB, dA;
     const unsigned A = info->a;
 
     // Set up some basic variables
+    srcbpp = srcfmt->bytes_per_pixel;
     dstbpp = dstfmt->bytes_per_pixel;
     if (srcbpp == 4)
         srcskip += width - (width + 1) / 2;
@@ -632,6 +631,8 @@ SDL_FORCE_INLINE void BlitBtoNAlpha(SDL_BlitInfo *info, const Uint32 srcbpp)
         srcskip += width - (width + 3) / 4;
     else if (srcbpp == 1)
         srcskip += width - (width + 7) / 8;
+    mask = (1 << srcbpp) - 1;
+    align = (8 / srcbpp) - 1;
 
     if (SDL_PIXELORDER(info->src_fmt->format) == SDL_BITMAPORDER_4321) {
         while (height--) {
@@ -680,28 +681,27 @@ SDL_FORCE_INLINE void BlitBtoNAlpha(SDL_BlitInfo *info, const Uint32 srcbpp)
     }
 }
 
-SDL_FORCE_INLINE void BlitBtoNAlphaKey(SDL_BlitInfo *info, const Uint32 srcbpp)
+static void BlitBtoNAlphaKey(SDL_BlitInfo *info)
 {
-    const Uint32 mask = (1 << srcbpp) - 1;
-    const Uint32 align = (8 / srcbpp) - 1;
-
     int width = info->dst_w;
     int height = info->dst_h;
     Uint8 *src = info->src;
     Uint8 *dst = info->dst;
     int srcskip = info->src_skip;
     int dstskip = info->dst_skip;
+    const SDL_PixelFormatDetails *srcfmt = info->src_fmt;
     const SDL_PixelFormatDetails *dstfmt = info->dst_fmt;
     const SDL_Color *srcpal = info->src_pal->colors;
-    int dstbpp;
+    int srcbpp, dstbpp;
     int c;
-    Uint32 pixel;
+    Uint32 pixel, mask, align;
     unsigned sR, sG, sB;
     unsigned dR, dG, dB, dA;
     const unsigned A = info->a;
     Uint32 ckey = info->colorkey;
 
     // Set up some basic variables
+    srcbpp = srcfmt->bytes_per_pixel;
     dstbpp = dstfmt->bytes_per_pixel;
     if (srcbpp == 4)
         srcskip += width - (width + 1) / 2;
@@ -709,6 +709,8 @@ SDL_FORCE_INLINE void BlitBtoNAlphaKey(SDL_BlitInfo *info, const Uint32 srcbpp)
         srcskip += width - (width + 3) / 4;
     else if (srcbpp == 1)
         srcskip += width - (width + 7) / 8;
+    mask = (1 << srcbpp) - 1;
+    align = (8 / srcbpp) - 1;
 
     if (SDL_PIXELORDER(info->src_fmt->format) == SDL_BITMAPORDER_4321) {
         while (height--) {
@@ -799,16 +801,6 @@ static const SDL_BlitFunc colorkey_blit_1b[] = {
     (SDL_BlitFunc)NULL, Blit1bto1Key, Blit1bto2Key, Blit1bto3Key, Blit1bto4Key
 };
 
-static void Blit1btoNAlpha(SDL_BlitInfo *info)
-{
-    BlitBtoNAlpha(info, 1);
-}
-
-static void Blit1btoNAlphaKey(SDL_BlitInfo *info)
-{
-    BlitBtoNAlphaKey(info, 1);
-}
-
 
 
 static void Blit2bto1(SDL_BlitInfo *info) {
@@ -851,16 +843,6 @@ static const SDL_BlitFunc colorkey_blit_2b[] = {
     (SDL_BlitFunc)NULL, Blit2bto1Key, Blit2bto2Key, Blit2bto3Key, Blit2bto4Key
 };
 
-static void Blit2btoNAlpha(SDL_BlitInfo *info)
-{
-    BlitBtoNAlpha(info, 2);
-}
-
-static void Blit2btoNAlphaKey(SDL_BlitInfo *info)
-{
-    BlitBtoNAlphaKey(info, 2);
-}
-
 
 
 static void Blit4bto1(SDL_BlitInfo *info) {
@@ -903,16 +885,6 @@ static const SDL_BlitFunc colorkey_blit_4b[] = {
     (SDL_BlitFunc)NULL, Blit4bto1Key, Blit4bto2Key, Blit4bto3Key, Blit4bto4Key
 };
 
-static void Blit4btoNAlpha(SDL_BlitInfo *info)
-{
-    BlitBtoNAlpha(info, 4);
-}
-
-static void Blit4btoNAlphaKey(SDL_BlitInfo *info)
-{
-    BlitBtoNAlphaKey(info, 4);
-}
-
 
 
 SDL_BlitFunc SDL_CalculateBlit0(SDL_Surface *surface)
@@ -940,10 +912,10 @@ SDL_BlitFunc SDL_CalculateBlit0(SDL_Surface *surface)
             break;
 
         case SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND:
-            return which >= 2 ? Blit1btoNAlpha : (SDL_BlitFunc)NULL;
+            return which >= 2 ? BlitBtoNAlpha : (SDL_BlitFunc)NULL;
 
         case SDL_COPY_COLORKEY | SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND:
-            return which >= 2 ? Blit1btoNAlphaKey : (SDL_BlitFunc)NULL;
+            return which >= 2 ? BlitBtoNAlphaKey : (SDL_BlitFunc)NULL;
         }
         return NULL;
     }
@@ -963,10 +935,10 @@ SDL_BlitFunc SDL_CalculateBlit0(SDL_Surface *surface)
             break;
 
         case SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND:
-            return which >= 2 ? Blit2btoNAlpha : (SDL_BlitFunc)NULL;
+            return which >= 2 ? BlitBtoNAlpha : (SDL_BlitFunc)NULL;
 
         case SDL_COPY_COLORKEY | SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND:
-            return which >= 2 ? Blit2btoNAlphaKey : (SDL_BlitFunc)NULL;
+            return which >= 2 ? BlitBtoNAlphaKey : (SDL_BlitFunc)NULL;
         }
         return NULL;
     }
@@ -986,10 +958,10 @@ SDL_BlitFunc SDL_CalculateBlit0(SDL_Surface *surface)
             break;
 
         case SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND:
-            return which >= 2 ? Blit4btoNAlpha : (SDL_BlitFunc)NULL;
+            return which >= 2 ? BlitBtoNAlpha : (SDL_BlitFunc)NULL;
 
         case SDL_COPY_COLORKEY | SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND:
-            return which >= 2 ? Blit4btoNAlphaKey : (SDL_BlitFunc)NULL;
+            return which >= 2 ? BlitBtoNAlphaKey : (SDL_BlitFunc)NULL;
         }
         return NULL;
     }