From 3594eaee595f174fc6d9f39f55e9918aa4eaa9e7 Mon Sep 17 00:00:00 2001
From: Alexei Podtelezhnikov <apodtele@gmail.com>
Date: Tue, 8 Sep 2020 22:20:11 -0400
Subject: [PATCH] [raster] Improve tracing.

---
 src/raster/ftraster.c | 28 ++++++++++++----------------
 1 file changed, 12 insertions(+), 16 deletions(-)

diff --git a/src/raster/ftraster.c b/src/raster/ftraster.c
index 9dd55cbe0..7ef171979 100644
--- a/src/raster/ftraster.c
+++ b/src/raster/ftraster.c
@@ -2241,11 +2241,10 @@
 
     /* in high-precision mode, we need 12 digits after the comma to */
     /* represent multiples of 1/(1<<12) = 1/4096                    */
-    FT_TRACE7(( "  y=%d x=[%.12f;%.12f], drop-out=%d",
+    FT_TRACE7(( "  y=%d x=[% .12f;% .12f]",
                 y,
                 x1 / (double)ras.precision,
-                x2 / (double)ras.precision,
-                dropOutControl ));
+                x2 / (double)ras.precision ));
 
     /* Drop-out control */
 
@@ -2315,7 +2314,7 @@
     Short  c1, f1;
 
 
-    FT_TRACE7(( "  y=%d x=[%.12f;%.12f]",
+    FT_TRACE7(( "  y=%d x=[% .12f;% .12f]",
                 y,
                 x1 / (double)ras.precision,
                 x2 / (double)ras.precision ));
@@ -2352,8 +2351,6 @@
       Int  dropOutControl = left->flags & 7;
 
 
-      FT_TRACE7(( ", drop-out=%d", dropOutControl ));
-
       if ( e1 == e2 + ras.precision )
       {
         switch ( dropOutControl )
@@ -2447,7 +2444,7 @@
 
     if ( e1 >= 0 && e1 < ras.bWidth )
     {
-      FT_TRACE7(( " -> x=%ld (drop-out)", e1 ));
+      FT_TRACE7(( " -> x=%ld", e1 ));
 
       c1 = (Short)( e1 >> 3 );
       f1 = (Short)( e1 & 7 );
@@ -2456,7 +2453,7 @@
     }
 
   Exit:
-    FT_TRACE7(( "\n" ));
+    FT_TRACE7(( " dropout=%d\n", left->flags & 7 ));
   }
 
 
@@ -2503,7 +2500,7 @@
       Long  e1, e2;
 
 
-      FT_TRACE7(( "  x=%d y=[%.12f;%.12f]",
+      FT_TRACE7(( "  x=%d y=[% .12f;% .12f]",
                   y,
                   x1 / (double)ras.precision,
                   x2 / (double)ras.precision ));
@@ -2521,11 +2518,12 @@
           PByte  bits;
 
 
-          FT_TRACE7(( " -> y=%ld (drop-out)", e1 ));
-
           bits = ras.bOrigin + ( y >> 3 ) - e1 * ras.target.pitch;
           f1   = (Byte)( 0x80 >> ( y & 7 ) );
 
+          FT_TRACE7(( bits[0] & f1 ? " redundant"
+                                   : " -> y=%ld", e1 ));
+
           bits[0] |= f1;
         }
       }
@@ -2547,7 +2545,7 @@
     Byte   f1;
 
 
-    FT_TRACE7(( "  x=%d y=[%.12f;%.12f]",
+    FT_TRACE7(( "  x=%d y=[% .12f;% .12f]",
                 y,
                 x1 / (double)ras.precision,
                 x2 / (double)ras.precision ));
@@ -2573,8 +2571,6 @@
       Int  dropOutControl = left->flags & 7;
 
 
-      FT_TRACE7(( ", dropout=%d", dropOutControl ));
-
       if ( e1 == e2 + ras.precision )
       {
         switch ( dropOutControl )
@@ -2644,7 +2640,7 @@
 
     if ( e1 >= 0 && (ULong)e1 < ras.target.rows )
     {
-      FT_TRACE7(( " -> y=%ld (drop-out)", e1 ));
+      FT_TRACE7(( " -> y=%ld", e1 ));
 
       bits  = ras.bOrigin + ( y >> 3 ) - e1 * ras.target.pitch;
       f1    = (Byte)( 0x80 >> ( y & 7 ) );
@@ -2653,7 +2649,7 @@
     }
 
   Exit:
-    FT_TRACE7(( "\n" ));
+    FT_TRACE7(( " dropout=%d\n", left->flags & 7 ));
   }