[Git][freetype/freetype][master] [raster] Eliminate intensive flow checking.

[Alexei Podtelezhnikov (@apodtele)]

Alexei Podtelezhnikov pushed to branch master at FreeType / FreeType

Commits:

• efbae547
  by Alexei Podtelezhnikov (Алексей Подтележников) at 2023-11-24T10:23:36-05:00

  [raster] Eliminate intensive flow checking.
  
  * src/raster/ftraster.c (Draw_Sweep): Pass the flow increment.
  (Increment): Accept the flow increment.
  

1 changed file:

• src/raster/ftraster.c

Changes:

src/raster/ftraster.c

---

...	...	@@ -1913,7 +1913,8 @@
1913	1913	* Bubble sort with immediate restart is good enough and simple.
1914	1914	*/
1915	1915	static void
1916		- Increment( PProfileList list )
	1916	+ Increment( PProfileList list,
	1917	+ Int flow )
1917	1918	{
1918	1919	PProfile *old, current, next;
1919	1920
...	...	@@ -1925,7 +1926,7 @@
1925	1926	current = *old;
1926	1927	if ( --current->height )
1927	1928	{
1928		- current->offset += ( current->flags & Flow_Up ) ? 1 : -1;
	1929	+ current->offset += flow;
1929	1930	current->X = current->x[current->offset];
1930	1931	old = &current->link;
1931	1932	}
...	...	@@ -2267,6 +2268,8 @@
2267	2268	{
2268	2269	*Q = P->link; /* remove */
2269	2270
	2271	+ /* each active list contains profiles with the same flow */
	2272	+ /* left and right are arbitrary, correspond to TrueType */
2270	2273	if ( P->flags & Flow_Up )
2271	2274	InsNew( &draw_left, P );
2272	2275	else
...	...	@@ -2294,6 +2297,8 @@
2294	2297	Long xs;
2295	2298
2296	2299
	2300	+ /* TrueType should have x2 > x1, but can be opposite */
	2301	+ /* by mistake or in CFF/Type1, fix it then */
2297	2302	if ( x1 > x2 )
2298	2303	{
2299	2304	xs = x1;
...	...	@@ -2418,8 +2423,8 @@
2418	2423
2419	2424	ras.Proc_Sweep_Step( RAS_VAR );
2420	2425
2421		- Increment( &draw_left );
2422		- Increment( &draw_right );
	2426	+ Increment( &draw_left, 1 );
	2427	+ Increment( &draw_right, -1 );
2423	2428	}
2424	2429	while ( ++y < y_turn );
2425	2430	}

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