[Git][freetype/freetype][master] [raster] Make `band_top' local variable.

[Alexei Podtelezhnikov (@apodtele)]

Alexei Podtelezhnikov pushed to branch master at FreeType / FreeType

Commits:

• fb4511eb
  by Alexei Podtelezhnikov at 2021-06-26T08:49:20-04:00

  [raster] Make `band_top' local variable.
  
  * src/raster/ftraster.c (black_TWorker): Move `band_top' from here...
  (Render_Single_Pass): ... to here, and refactor.
  (Render_Glyph): Updated.
  

2 changed files:

• ChangeLog
• src/raster/ftraster.c

Changes:

ChangeLog

---

	1	+2021-06-25 Alexei Podtelezhnikov <apodtele@gmail.com>
	2	+
	3	+ [raster] Make `band_top' local variable.
	4	+
	5	+ * src/raster/ftraster.c (black_TWorker): Move `band_top' from here...
	6	+ (Render_Single_Pass): ... to here, and refactor.
	7	+ (Render_Glyph): Updated.
	8	+
1	9	2021-06-25 Alexei Podtelezhnikov <apodtele@gmail.com>
2	10
3	11	[raster] Adjust sub-band bisecting limits.

src/raster/ftraster.c

---

...	...	@@ -529,7 +529,6 @@
529	529
530	530	black_TBand band_stack[16]; /* band stack used for sub-banding */
531	531	/* enough for signed short bands */
532		- Int band_top; /* band stack top */
533	532
534	533	};
535	534
...	...	@@ -3034,12 +3033,13 @@
3034	3033	Render_Single_Pass( RAS_ARGS Bool flipped )
3035	3034	{
3036	3035	Short i, j, k;
	3036	+ Int band_top = 0;
3037	3037
3038	3038
3039		- while ( ras.band_top >= 0 )
	3039	+ do
3040	3040	{
3041		- ras.maxY = (Long)ras.band_stack[ras.band_top].y_max * ras.precision;
3042		- ras.minY = (Long)ras.band_stack[ras.band_top].y_min * ras.precision;
	3041	+ ras.maxY = (Long)ras.band_stack[band_top].y_max * ras.precision;
	3042	+ ras.minY = (Long)ras.band_stack[band_top].y_min * ras.precision;
3043	3043
3044	3044	ras.top = ras.buff;
3045	3045
...	...	@@ -3052,33 +3052,29 @@
3052	3052
3053	3053	/* sub-banding */
3054	3054
3055		- i = ras.band_stack[ras.band_top].y_min;
3056		- j = ras.band_stack[ras.band_top].y_max;
	3055	+ i = ras.band_stack[band_top].y_min;
	3056	+ j = ras.band_stack[band_top].y_max;
3057	3057
3058	3058	if ( i == j )
3059		- {
3060		- ras.band_top = 0;
3061		-
3062	3059	return ras.error; /* still Raster_Overflow */
3063		- }
3064	3060
3065	3061	k = (Short)( ( i + j ) / 2 );
3066	3062
3067		- ras.band_stack[ras.band_top + 1].y_min = (Short)( k + 1 );
3068		- ras.band_stack[ras.band_top + 1].y_max = j;
	3063	+ ras.band_stack[band_top].y_max = k;
3069	3064
3070		- ras.band_stack[ras.band_top].y_max = k;
	3065	+ ras.band_stack[band_top + 1].y_min = (Short)( k + 1 );
	3066	+ ras.band_stack[band_top + 1].y_max = j;
3071	3067
3072		- ras.band_top++;
	3068	+ band_top++;
3073	3069	}
3074	3070	else
3075	3071	{
3076	3072	if ( ras.fProfile )
3077	3073	if ( Draw_Sweep( RAS_VAR ) )
3078	3074	return ras.error;
3079		- ras.band_top--;
	3075	+ band_top--;
3080	3076	}
3081		- }
	3077	+ } while ( band_top >= 0 );
3082	3078
3083	3079	return Raster_Err_Ok;
3084	3080	}
...	...	@@ -3128,7 +3124,6 @@
3128	3124	ras.Proc_Sweep_Drop = Vertical_Sweep_Drop;
3129	3125	ras.Proc_Sweep_Step = Vertical_Sweep_Step;
3130	3126
3131		- ras.band_top = 0;
3132	3127	ras.band_stack[0].y_min = 0;
3133	3128	ras.band_stack[0].y_max = (Short)( ras.target.rows - 1 );
3134	3129
...	...	@@ -3151,7 +3146,6 @@
3151	3146	ras.Proc_Sweep_Drop = Horizontal_Sweep_Drop;
3152	3147	ras.Proc_Sweep_Step = Horizontal_Sweep_Step;
3153	3148
3154		- ras.band_top = 0;
3155	3149	ras.band_stack[0].y_min = 0;
3156	3150	ras.band_stack[0].y_max = (Short)( ras.target.width - 1 );
3157	3151

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