Speed up FT_Set_Var_{Design,Blend}_Coordinates if curr == new.
We exit early if the current design or blend coordinates are identical to the new ones. * src/truetype/ttgxvar.c (tt_set_mm_blend, TT_Set_Var_Design): Implement it, returning internal error code -1 if there will be no variation change. * src/type1/t1load.c (t1_set_mm_blend): Ditto. * src/base/ftmm.c (FT_Set_Var_Design_Coordinates, FT_Set_MM_Blend_Coordinates, FT_Set_Var_Blend_Coordinates): Updated.
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ChangeLog
16
ChangeLog
@ -1,3 +1,19 @@
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2017-12-20 Werner Lemberg <wl@gnu.org>
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Speed up FT_Set_Var_{Design,Blend}_Coordinates if curr == new.
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We exit early if the current design or blend coordinates are
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identical to the new ones.
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* src/truetype/ttgxvar.c (tt_set_mm_blend, TT_Set_Var_Design):
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Implement it, returning internal error code -1 if there will be no
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variation change.
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* src/type1/t1load.c (t1_set_mm_blend): Ditto.
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* src/base/ftmm.c (FT_Set_Var_Design_Coordinates,
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FT_Set_MM_Blend_Coordinates, FT_Set_Var_Blend_Coordinates): Updated.
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2017-12-18 Werner Lemberg <wl@gnu.org>
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[sfnt] Fix charmap type 2 iterator (#52646).
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@ -48,11 +48,15 @@ FT_BEGIN_HEADER
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FT_UInt num_coords,
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FT_Long* coords );
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/* use return value -1 to indicate that the new coordinates */
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/* are equal to the current ones; no changes are thus needed */
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typedef FT_Error
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(*FT_Set_Var_Design_Func)( FT_Face face,
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FT_UInt num_coords,
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FT_Fixed* coords );
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/* use return value -1 to indicate that the new coordinates */
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/* are equal to the current ones; no changes are thus needed */
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typedef FT_Error
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(*FT_Set_MM_Blend_Func)( FT_Face face,
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FT_UInt num_coords,
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@ -203,6 +203,10 @@
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error = FT_ERR( Invalid_Argument );
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if ( service_mm->set_var_design )
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error = service_mm->set_var_design( face, num_coords, coords );
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/* internal error code -1 means `no change'; we can exit immediately */
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if ( error == -1 )
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return FT_Err_Ok;
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}
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if ( !error )
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@ -275,6 +279,10 @@
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error = FT_ERR( Invalid_Argument );
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if ( service_mm->set_mm_blend )
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error = service_mm->set_mm_blend( face, num_coords, coords );
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/* internal error code -1 means `no change'; we can exit immediately */
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if ( error == -1 )
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return FT_Err_Ok;
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}
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if ( !error )
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@ -322,6 +330,10 @@
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error = FT_ERR( Invalid_Argument );
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if ( service_mm->set_mm_blend )
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error = service_mm->set_mm_blend( face, num_coords, coords );
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/* internal error code -1 means `no change'; we can exit immediately */
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if ( error == -1 )
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return FT_Err_Ok;
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}
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if ( !error )
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@ -2432,6 +2432,12 @@
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}
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else
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{
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FT_Bool have_diff = 0;
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FT_UInt j;
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FT_Fixed* c;
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FT_Fixed* n;
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manageCvt = mcvt_retain;
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for ( i = 0; i < num_coords; i++ )
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@ -2439,10 +2445,34 @@
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if ( blend->normalizedcoords[i] != coords[i] )
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{
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manageCvt = mcvt_load;
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have_diff = 1;
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break;
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}
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}
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if ( FT_IS_NAMED_INSTANCE( FT_FACE( face ) ) )
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{
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FT_UInt idx = (FT_UInt)face->root.face_index >> 16;
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c = blend->normalizedcoords + i;
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n = blend->normalized_stylecoords + idx * mmvar->num_axis + i;
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for ( j = i; j < mmvar->num_axis; j++, n++, c++ )
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if ( *c != *n )
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have_diff = 1;
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}
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else
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{
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c = blend->normalizedcoords + i;
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for ( j = i; j < mmvar->num_axis; j++, c++ )
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if ( *c != 0 )
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have_diff = 1;
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}
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/* return value -1 indicates `no change' */
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if ( !have_diff )
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return -1;
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for ( ; i < mmvar->num_axis; i++ )
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{
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if ( blend->normalizedcoords[i] != 0 )
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@ -2664,8 +2694,11 @@
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FT_Memory memory = face->root.memory;
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FT_Fixed* c;
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FT_Fixed* n;
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FT_Fixed* normalized = NULL;
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FT_Bool have_diff = 0;
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if ( !face->blend )
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{
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@ -2690,25 +2723,35 @@
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goto Exit;
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}
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FT_MEM_COPY( blend->coords,
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coords,
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num_coords * sizeof ( FT_Fixed ) );
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c = blend->coords + num_coords;
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c = blend->coords;
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n = coords;
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for ( i = 0; i < num_coords; i++, n++, c++ )
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{
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if ( *c != *n )
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{
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*c = *n;
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have_diff = 1;
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}
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}
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if ( FT_IS_NAMED_INSTANCE( FT_FACE( face ) ) )
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{
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FT_UInt instance_index;
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FT_Var_Named_Style* named_style;
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FT_Fixed* n;
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instance_index = (FT_UInt)face->root.face_index >> 16;
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named_style = mmvar->namedstyle + instance_index - 1;
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n = named_style->coords + num_coords;
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for ( i = num_coords; i < mmvar->num_axis; i++, n++, c++ )
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*c = *n;
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for ( ; i < mmvar->num_axis; i++, n++, c++ )
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{
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if ( *c != *n )
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{
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*c = *n;
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have_diff = 1;
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}
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}
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}
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else
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{
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@ -2716,10 +2759,20 @@
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a = mmvar->axis + num_coords;
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for ( i = num_coords; i < mmvar->num_axis; i++, a++, c++ )
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*c = a->def;
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for ( ; i < mmvar->num_axis; i++, a++, c++ )
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{
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if ( *c != a->def )
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{
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*c = a->def;
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have_diff = 1;
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}
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}
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}
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/* return value -1 indicates `no change' */
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if ( !have_diff )
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return -1;
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if ( FT_NEW_ARRAY( normalized, mmvar->num_axis ) )
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goto Exit;
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@ -374,6 +374,8 @@
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PS_Blend blend = face->blend;
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FT_UInt n, m;
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FT_Bool have_diff = 0;
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if ( !blend )
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return FT_THROW( Invalid_Argument );
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@ -405,10 +407,16 @@
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result = FT_MulFix( result, factor );
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}
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blend->weight_vector[n] = result;
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if ( blend->weight_vector[n] != result )
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{
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blend->weight_vector[n] = result;
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have_diff = 1;
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}
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}
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return FT_Err_Ok;
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/* return value -1 indicates `no change' */
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return have_diff ? FT_Err_Ok : -1;
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}
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