Added image blending patch for ppc, possibly other big-endian arches. Fixes bug #72721.

1 files changed, 35 insertions, 0 deletions

diff --git a/games-puzzle/easysok/files/image_effect-ppc.patch b/games-puzzle/easysok/files/image_effect-ppc.patch
new file mode 100644
index 000000000000..744d33ece96e
--- /dev/null
+++ b/games-puzzle/easysok/files/image_effect-ppc.patch
@@ -0,0 +1,35 @@
+--- src/image_effect.cpp	2004-12-12 23:33:38.452490448 +1100
++++ easysok-0.3.4-clean/src/image_effect.cpp	2003-12-31 04:42:50.000000000 +1100
+@@ -91,20 +91,20 @@
+     for (int y = 0; y < height; ++y)
+     {
+         uchar * upper_line = upper.scanLine(y + upper_y_offset) + ((width + upper_x_offset) << 2) - 1;
+-        uchar * lower_line = lower.scanLine(y + y_offset) + ((width + x_offset) << 2) - 1;
++	uchar * lower_line = lower.scanLine(y + y_offset) + ((width + x_offset) << 2) - 1;
+ 
+         int x = width - 1;
+ 
+         do
+         {
+-            while ( !(alpha = *upper_line) && (x > 0) )
++	    while ( !(alpha = *(upper_line - 3)) && (x > 0) )
+             {
+                 upper_line -= 4;
+                 lower_line -= 4;
+                 --x;
+             }
+ 
+-            *lower_line = 255 - (((255 - *upper_line) * (255 - *lower_line) + 255) >> 8);
++            *lower_line += ( ((*upper_line - *lower_line) * alpha) >> 8);
+             --upper_line;
+             --lower_line;
+             *lower_line += ( ((*upper_line - *lower_line) * alpha) >> 8);
+@@ -113,7 +113,7 @@
+             *lower_line += ( ((*upper_line - *lower_line) * alpha) >> 8);
+             --upper_line;
+             --lower_line;
+-            *lower_line += ( ((*upper_line - *lower_line) * alpha) >> 8);
++	    *lower_line = 255 - (((255 - *upper_line) * (255 - *lower_line) + 255) >> 8);
+             --upper_line;
+             --lower_line;
+             --x;