[kern/kerx] Enable crossStream kerning in vertical

CoreText doesn't, but no reason we shouldn't do.

diff --git a/src/hb-aat-layout-kerx-table.hh b/src/hb-aat-layout-kerx-table.hh
index 2a12a0b..3418327 100644 (file)
--- a/src/hb-aat-layout-kerx-table.hh
+++ b/src/hb-aat-layout-kerx-table.hh
@@ -334,10 +334,10 @@ struct KerxSubTableFormat1
            {
              if (crossStream)
              {
-               /* CoreText doesn't do crossStream kerning in vertical. */
-               //crossOffset += v;
-               //if (!buffer->pos[idx].x_offset)
-               //  buffer->pos[idx].x_offset = c->font->em_scale_x (crossOffset);
+               /* CoreText doesn't do crossStream kerning in vertical.  We do. */
+               crossOffset += v;
+               if (!buffer->pos[idx].x_offset)
+                 buffer->pos[idx].x_offset = c->font->em_scale_x (crossOffset);
              }
              else
              {

diff --git a/src/hb-ot-kern-table.hh b/src/hb-ot-kern-table.hh
index e065b6f..e205b4b 100644 (file)
--- a/src/hb-ot-kern-table.hh
+++ b/src/hb-ot-kern-table.hh
@@ -161,10 +161,10 @@ struct KernSubTableFormat1
            {
              if (crossStream)
              {
-               /* CoreText doesn't do crossStream kerning in vertical. */
-               //crossOffset += v;
-               //if (!buffer->pos[idx].x_offset)
-               //  buffer->pos[idx].x_offset = c->font->em_scale_x (crossOffset);
+               /* CoreText doesn't do crossStream kerning in vertical.  We do. */
+               crossOffset += v;
+               if (!buffer->pos[idx].x_offset)
+                 buffer->pos[idx].x_offset = c->font->em_scale_x (crossOffset);
              }
              else
              {