commit 623e66a142252b15ddfbd8f1c73874eae44a8f70
Author: Anuj Verma <anujv@iitbhilai.ac.in>
Date:   Fri May 21 19:41:58 2021 +0530

    [ftsdf] Synchronize with the change made in the `sdf` renderer.
    
    * src/ftsdf.c (draw): Change logic to utilize 8bit SDF instead of 16.

diff --git a/src/ftsdf.c b/src/ftsdf.c
index a638c3e..796b737 100644
--- a/src/ftsdf.c
+++ b/src/ftsdf.c
@@ -436,7 +436,7 @@
     Box  sample_region;
 
     Vec2       center;
-    FT_Short*  buffer;
+    FT_Char*   buffer;
 
 
     if ( !bitmap || !bitmap->buffer )
@@ -496,7 +496,7 @@
       draw_region.xMax    = display->bitmap->width;
     }
 
-    buffer = (FT_Short*)bitmap->buffer;
+    buffer = (FT_Char*)bitmap->buffer;
 
     /* Finally loop over all pixels inside the draw region        */
     /* and copy pixels from the sample region to the draw region. */
@@ -516,12 +516,12 @@
         {
           FT_UInt   bitmap_index = ( y / status.scale ) * bitmap->width +
                                      x / status.scale;
-          FT_Short  pixel_value  = buffer[bitmap_index];
+          FT_Char   pixel_value  = buffer[bitmap_index];
 
 
           /* If nearest filtering then simply take the value of the */
           /* nearest sampling pixel.                                */
-          min_dist = (float)pixel_value / 1024.0f;
+          min_dist = (float)pixel_value / 128.0f;
         }
         else
         {
@@ -560,22 +560,22 @@
           indc[2] = (int)bi_y * width + (int)bi_x + 1;
           indc[3] = ( (int)bi_y + 1 ) * width + (int)bi_x + 1;
 
-          dist[0] = (float)buffer[indc[0]] / 1024.0f;
+          dist[0] = (float)buffer[indc[0]] / 128.0f;
 
           if ( indc[1] >= width * rows )
             dist[1] = -status.spread;
           else
-            dist[1] = (float)buffer[indc[1]] / 1024.0f;
+            dist[1] = (float)buffer[indc[1]] / 128.0f;
 
           if ( indc[2] >= width * rows )
             dist[2] = -status.spread;
           else
-            dist[2] = (float)buffer[indc[2]] / 1024.0f;
+            dist[2] = (float)buffer[indc[2]] / 128.0f;
 
           if ( indc[3] >= width * rows )
             dist[3] = -status.spread;
           else
-            dist[3] = (float)buffer[indc[3]] / 1024.0f;
+            dist[3] = (float)buffer[indc[3]] / 128.0f;
 
           m1 = dist[0] * ( 1.0f - nbi_y ) + dist[1] * nbi_y;
           m2 = dist[2] * ( 1.0f - nbi_y ) + dist[3] * nbi_y;
@@ -615,7 +615,6 @@
 
           /* normalize using `status.spread` */
           final_dist  = final_dist < 0 ? -final_dist : final_dist;
-          final_dist /= (float)status.spread;
 
           /* invert the values */
           final_dist  = 1.0f - final_dist;
@@ -686,12 +685,16 @@
       goto Exit;
     }
 
-#ifdef __linux__
+
     int  flip_y = 1;
 
+#ifdef __linux__
+    flip_y = 0;
+#endif
+
     FT_CALL( FT_Property_Set( handle->library, "sdf", "flip_y", &flip_y ) );
     FT_CALL( FT_Property_Set( handle->library, "bsdf", "flip_y", &flip_y ) );
-#endif
+
 
     grSetTitle( display->surface, "Signed Distance Field Viewer" );
     event_color_change();