[freetype2] anuj-distance-field 6b178b8: [sdf] Temporary change.

[Anuj Verma]

branch: anuj-distance-field
commit 6b178b8a9e7f482090e0c51b1b180132295ec37c
Author: Anuj Verma <anujv@iitbhilai.ac.in>
Commit: Anuj Verma <anujv@iitbhilai.ac.in>

    [sdf] Temporary change.
    
    Added new property to dynamically change the
    optimization to be used to generate the SDF.
    This can be used to compare the performance of
    different optimization techniques without going
    and recompiling the program.
    And will also be used in the demo to check the
    performance.
---
 [GSoC]ChangeLog     | 12 ++++++++++++
 src/sdf/ftsdf.c     | 19 +++++++++++++++++--
 src/sdf/ftsdf.h     | 13 +++++++++++++
 src/sdf/ftsdfrend.c | 16 ++++++++++++++++
 src/sdf/ftsdfrend.h |  3 +++
 5 files changed, 61 insertions(+), 2 deletions(-)

diff --git a/[GSoC]ChangeLog b/[GSoC]ChangeLog
index fc25667..09d0bdd 100644
--- a/[GSoC]ChangeLog
+++ b/[GSoC]ChangeLog
@@ -1,3 +1,15 @@
+2020-07-14  Anuj Verma  <anujv@iitbhilai.ac.in>
+
+       [sdf] Temporary change.
+
+       Added new property to dynamically change the
+       optimization to be used to generate the SDF.
+       This can be used to compare the performance of
+       different optimization techniques without going
+       and recompiling the program.
+       And will also be used in the demo to check the
+       performance.
+
 2020-07-13  Anuj Verma  <anujv@iitbhilai.ac.in>
 
        [sdf] Added more properties.
diff --git a/src/sdf/ftsdf.c b/src/sdf/ftsdf.c
index 4797be8..f8e6f60 100644
--- a/src/sdf/ftsdf.c
+++ b/src/sdf/ftsdf.c
@@ -3129,8 +3129,23 @@
 
     FT_CALL( sdf_outline_decompose( outline, shape ) );
 
-    FT_CALL( sdf_generate_subdivision( internal_params, shape, 
sdf_params->spread,
-                           sdf_params->root.target ) );
+    /* TEMPORARY */
+    if ( sdf_params->optimization == OPTIMIZATION_BB )
+      FT_CALL( sdf_generate_bounding_box( internal_params,
+                                          shape, sdf_params->spread,
+                                          sdf_params->root.target ) );
+    else if ( sdf_params->optimization == OPTIMIZATION_SUB )
+      FT_CALL( sdf_generate_subdivision( internal_params,
+                                         shape, sdf_params->spread,
+                                         sdf_params->root.target ) );
+    else if ( sdf_params->optimization == OPTIMIZATION_CG )
+      FT_CALL( sdf_generate_coarse_grid( internal_params,
+                                         shape, sdf_params->spread,
+                                         sdf_params->root.target ) );
+    else
+      FT_CALL( sdf_generate( internal_params,
+                             shape, sdf_params->spread,
+                             sdf_params->root.target ) );
 
     if ( shape )
       sdf_shape_done( &shape );
diff --git a/src/sdf/ftsdf.h b/src/sdf/ftsdf.h
index edad035..475393a 100644
--- a/src/sdf/ftsdf.h
+++ b/src/sdf/ftsdf.h
@@ -17,6 +17,16 @@ FT_BEGIN_HEADER
   /* maximum spread supported by the rasterizer. */
   #define MAX_SPREAD      32
 
+  /* TEMPORARY */
+  typedef enum Optimizations_ {
+    OPTIMIZATION_NONE = 0,  /* default: check all points against all edges  */
+    OPTIMIZATION_BB   = 1,  /* use bounding box to check nearby grid points */
+    OPTIMIZATION_SUB  = 2,  /* subdivide then use bounding box              */
+    OPTIMIZATION_CG   = 3,  /* use coarse grid to only check relevant edges */
+
+  } Optimizations;
+  /* --------- */
+
   /**************************************************************************
    *
    * @struct:
@@ -38,6 +48,9 @@ FT_BEGIN_HEADER
     FT_Bool           flip_sign;
     FT_Bool           flip_y;
 
+    /* TEMPORARY */
+    FT_Int            optimization;
+
   } SDF_Raster_Params;
 
   FT_EXPORT_VAR( const FT_Raster_Funcs ) ft_sdf_raster;
diff --git a/src/sdf/ftsdfrend.c b/src/sdf/ftsdfrend.c
index 0b0bd5a..44b2fc0 100644
--- a/src/sdf/ftsdfrend.c
+++ b/src/sdf/ftsdfrend.c
@@ -79,6 +79,16 @@
       FT_TRACE7(( "[sdf] sdf_property_set: "
                   "updated property `flip_y' to %d\n", val ));
     }
+    /* TEMPORARY */
+    else if ( ft_strcmp( property_name, "optimization" ) == 0 )
+    {
+      FT_Int  val = *(const FT_Int*)value;
+
+
+      render->optimization = val ? 1 : 0;
+      FT_TRACE7(( "[sdf] sdf_property_set: "
+                  "updated property `optimization' to %d\n", val ));
+    }
     else
     {
       FT_TRACE0(( "[sdf] sdf_property_set: "
@@ -167,6 +177,9 @@
     sdf_render->flip_sign = 0;
     sdf_render->flip_y    = 0;
 
+    /* TEMPORARY */
+    sdf_render->optimization = OPTIMIZATION_NONE;
+
     return FT_Err_Ok;
   }
 
@@ -280,6 +293,9 @@
     params.flip_sign   = sdf_module->flip_sign;
     params.flip_y      = sdf_module->flip_y;
 
+    /* TEMPORARY */
+    params.optimization = sdf_module->optimization;
+
     /* render the outline */
     error = render->raster_render( render->raster, (const 
FT_Raster_Params*)&params );
 
diff --git a/src/sdf/ftsdfrend.h b/src/sdf/ftsdfrend.h
index 3f0f831..262a2a1 100644
--- a/src/sdf/ftsdfrend.h
+++ b/src/sdf/ftsdfrend.h
@@ -29,6 +29,9 @@ FT_BEGIN_HEADER
     FT_Bool         flip_sign;
     FT_Bool         flip_y;
 
+    /* TEMPORARY */
+    FT_Int          optimization;
+
   } SDF_Renderer_Module, *SDF_Renderer;