Hand-apply patches (glyph cache) from Authentic8 branch: 653869c 30f23d4 74b015d 4e51e6d 2829087

libxrdp/libxrdpinc.h

@@ -40,13 +40,15 @@ struct xrdp_pen
   int color;
 };
 
+/* 2.2.2.2.1.2.5.1 Cache Glyph Data (TS_CACHE_GLYPH_DATA) */
 struct xrdp_font_char
 {
-  int offset;
-  int baseline;
-  int width;
-  int height;
+  int offset;    /* x */
+  int baseline;  /* y */
+  int width;     /* cx */
+  int height;    /* cy */
   int incby;
+  int bpp;
   char* data;
 };
 

libxrdp/xrdp_orders.c

@@ -2020,15 +2020,25 @@ xrdp_orders_send_font(struct xrdp_orders *self,
     int order_flags = 0;
     int datasize = 0;
     int len = 0;
+    int flags;
 
-    datasize = FONT_DATASIZE(font_char);
+    if (font_char->bpp == 8) /* alpha font */
+    {
+        datasize = ((font_char->width + 3) & ~3) * font_char->height;
+        flags = 8 | 0x4000;
+    }
+    else
+    {
+        datasize = FONT_DATASIZE(font_char);
+        flags = 8;
+    }
     xrdp_orders_check(self, datasize + 18);
     self->order_count++;
     order_flags = RDP_ORDER_STANDARD | RDP_ORDER_SECONDARY;
     out_uint8(self->out_s, order_flags);
     len = (datasize + 12) - 7; /* length after type minus 7 */
     out_uint16_le(self->out_s, len);
-    out_uint16_le(self->out_s, 8); /* flags */
+    out_uint16_le(self->out_s, flags);
     out_uint8(self->out_s, RDP_ORDER_FONTCACHE); /* type */
     out_uint8(self->out_s, font_index);
     out_uint8(self->out_s, 1); /* num of chars */