Merge pull request #11389 from Pokechu22/sw-no-alpha-1-hack

Software: Remove alpha=1 blending special-case

Source/Core/VideoBackends/Software/Tev.cpp

@@ -550,19 +550,6 @@ void Tev::Draw()
   if (!TevAlphaTest(output[ALP_C]))
     return;
 
-  // Hardware testing indicates that an alpha of 1 can pass an alpha test,
-  // but doesn't do anything in blending
-  // This situation is important for Mario Kart Wii's menus (they will render incorrectly if the
-  // alpha test for the FMV in the background fails, since they depend on depth for drawing a yellow
-  // border) and Fortune Street's gameplay (where a rectangle with an alpha value of 1 is drawn over
-  // the center of the screen several times, but those rectangles shouldn't be visible).
-  // Blending seems to result in no changes to the output with an alpha of 1, even if the input
-  // color is white.
-  // TODO: Investigate this further: we might be handling blending incorrectly in general (though
-  // there might not be any good way of changing blending behavior)
-  if (output[ALP_C] == 1)
-    output[ALP_C] = 0;
-
   // z texture
   if (bpmem.ztex2.op != ZTexOp::Disabled)
   {