[raster] Handle `FT_RASTER_FLAG_AA' correctly.

This fixes a breakage caused by the commit `[raster] Remove
5-level gray AA mode from monochrome rasterizer.'.

Problem reported by Markus Trippelsdorf <markus@trippelsdorf.de> and
octoploid <octoploid@yandex.com>.

* src/raster/ftraster.c (ft_black_render): Handle
`FT_RASTER_FLAG_AA'.

* src/raster/ftrend1.c (ft_raster1_render): Remove gray AA mode
remnants.

ChangeLog

@@ -1,3 +1,19 @@
+2015-01-23  Behdad Esfahbod  <behdad@behdad.org>
+
+	[raster] Handle `FT_RASTER_FLAG_AA' correctly.
+
+	This fixes a breakage caused by the commit `[raster] Remove
+	5-level gray AA mode from monochrome rasterizer.'.
+
+	Problem reported by Markus Trippelsdorf <markus@trippelsdorf.de> and
+	octoploid <octoploid@yandex.com>.
+
+	* src/raster/ftraster.c (ft_black_render): Handle
+	`FT_RASTER_FLAG_AA'.
+
+	* src/raster/ftrend1.c (ft_raster1_render): Remove gray AA mode
+	remnants.
+
 2015-01-18  Werner Lemberg  <wl@gnu.org>
 
 	* src/base/ftobjs.c (FT_New_Library): Fix compiler warning.

src/raster/ftraster.c

@@ -3108,6 +3108,9 @@
     if ( params->flags & FT_RASTER_FLAG_DIRECT )
       return FT_THROW( Unsupported );
 
+    if ( params->flags & FT_RASTER_FLAG_AA )
+      return FT_THROW( Unsupported );
+
     if ( !target_map )
       return FT_THROW( Invalid );
 

src/raster/ftrend1.c

@@ -187,19 +187,8 @@
       slot->internal->flags &= ~FT_GLYPH_OWN_BITMAP;
     }
 
-    /* allocate new one, depends on pixel format */
-    if ( !( mode & FT_RENDER_MODE_MONO ) )
-    {
-      /* we pad to 32 bits, only for backwards compatibility with FT 1.x */
-      pitch              = FT_PAD_CEIL( width, 4 );
-      bitmap->pixel_mode = FT_PIXEL_MODE_GRAY;
-      bitmap->num_grays  = 256;
-    }
-    else
-    {
-      pitch              = ( ( width + 15 ) >> 4 ) << 1;
-      bitmap->pixel_mode = FT_PIXEL_MODE_MONO;
-    }
+    pitch              = ( ( width + 15 ) >> 4 ) << 1;
+    bitmap->pixel_mode = FT_PIXEL_MODE_MONO;
 
     bitmap->width = width;
     bitmap->rows  = height;
@@ -218,9 +207,6 @@
     params.source = outline;
     params.flags  = 0;
 
-    if ( bitmap->pixel_mode == FT_PIXEL_MODE_GRAY )
-      params.flags |= FT_RASTER_FLAG_AA;
-
     /* render outline into the bitmap */
     error = render->raster_render( render->raster, &params );