--- ../../../SDL-1.2.15/src/video/SDL_blit_N.c	2012-01-19 07:30:06.000000000 +0100
+++ SDL_blit_N.c	2012-02-19 11:41:40.000000000 +0100
@@ -689,6 +689,8 @@
         while ((UNALIGNED_PTR(dst)) && (width)) {
             bits = *(src++);
             RGBA_FROM_8888(bits, srcfmt, r, g, b, a);
+            if(!srcfmt->Amask)
+              a = srcfmt->alpha;
             *(dst++) = MAKE8888(dstfmt, r, g, b, a);
             width--;
         }
@@ -716,6 +718,8 @@
         while (extrawidth) {
             bits = *(src++);  /* max 7 pixels, don't bother with prefetch. */
             RGBA_FROM_8888(bits, srcfmt, r, g, b, a);
+            if(!srcfmt->Amask)
+              a = srcfmt->alpha;
             *(dst++) = MAKE8888(dstfmt, r, g, b, a);
             extrawidth--;
         }
@@ -769,6 +773,8 @@
             vec_dstst(dst+scalar_dst_lead, DST_CTRL(2,32,1024), DST_CHAN_DEST);
             bits = *(src++);
             RGBA_FROM_8888(bits, srcfmt, r, g, b, a);
+            if(!srcfmt->Amask)
+              a = srcfmt->alpha;
             *(dst++) = MAKE8888(dstfmt, r, g, b, a);
             width--;
         }
@@ -798,6 +804,8 @@
         while (extrawidth) {
             bits = *(src++);  /* max 7 pixels, don't bother with prefetch. */
             RGBA_FROM_8888(bits, srcfmt, r, g, b, a);
+            if(!srcfmt->Amask)
+              a = srcfmt->alpha;
             *(dst++) = MAKE8888(dstfmt, r, g, b, a);
             extrawidth--;
         }