Re-add and disable blit_with_interpolate_overlay

diff --git a/src/client/tile.cpp b/src/client/tile.cpp
index f9f38ec6d91c5f0628cec22dc3f61ae1d4b27290..e6668063c26d4443adaf3c73b32fa1e03152b3d2 100644 (file)
--- a/src/client/tile.cpp
+++ b/src/client/tile.cpp
@@ -1748,6 +1748,37 @@ static void blit_with_alpha_overlay(video::IImage *src, video::IImage *dst,
        }
 }
 
+// This function has been disabled because it is currently unused.
+// Feel free to re-enable if you find it handy.
+#if 0
+/*
+       Draw an image on top of an another one, using the specified ratio
+       modify all partially-opaque pixels in the destination.
+*/
+static void blit_with_interpolate_overlay(video::IImage *src, video::IImage *dst,
+               v2s32 src_pos, v2s32 dst_pos, v2u32 size, int ratio)
+{
+       for (u32 y0 = 0; y0 < size.Y; y0++)
+       for (u32 x0 = 0; x0 < size.X; x0++)
+       {
+               s32 src_x = src_pos.X + x0;
+               s32 src_y = src_pos.Y + y0;
+               s32 dst_x = dst_pos.X + x0;
+               s32 dst_y = dst_pos.Y + y0;
+               video::SColor src_c = src->getPixel(src_x, src_y);
+               video::SColor dst_c = dst->getPixel(dst_x, dst_y);
+               if (dst_c.getAlpha() > 0 && src_c.getAlpha() != 0)
+               {
+                       if (ratio == -1)
+                               dst_c = src_c.getInterpolated(dst_c, (float)src_c.getAlpha()/255.0f);
+                       else
+                               dst_c = src_c.getInterpolated(dst_c, (float)ratio/255.0f);
+                       dst->setPixel(dst_x, dst_y, dst_c);
+               }
+       }
+}
+#endif
+
 /*
        Apply color to destination
 */