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-rw-r--r--src/3rdparty/freetype/src/smooth/ftsmooth.c127
1 files changed, 83 insertions, 44 deletions
diff --git a/src/3rdparty/freetype/src/smooth/ftsmooth.c b/src/3rdparty/freetype/src/smooth/ftsmooth.c
index ef176bdf1e..cd034d2b40 100644
--- a/src/3rdparty/freetype/src/smooth/ftsmooth.c
+++ b/src/3rdparty/freetype/src/smooth/ftsmooth.c
@@ -1,19 +1,19 @@
-/***************************************************************************/
-/* */
-/* ftsmooth.c */
-/* */
-/* Anti-aliasing renderer interface (body). */
-/* */
-/* Copyright 2000-2018 by */
-/* David Turner, Robert Wilhelm, and Werner Lemberg. */
-/* */
-/* This file is part of the FreeType project, and may only be used, */
-/* modified, and distributed under the terms of the FreeType project */
-/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
-/* this file you indicate that you have read the license and */
-/* understand and accept it fully. */
-/* */
-/***************************************************************************/
+/****************************************************************************
+ *
+ * ftsmooth.c
+ *
+ * Anti-aliasing renderer interface (body).
+ *
+ * Copyright (C) 2000-2019 by
+ * David Turner, Robert Wilhelm, and Werner Lemberg.
+ *
+ * This file is part of the FreeType project, and may only be used,
+ * modified, and distributed under the terms of the FreeType project
+ * license, LICENSE.TXT. By continuing to use, modify, or distribute
+ * this file you indicate that you have read the license and
+ * understand and accept it fully.
+ *
+ */
#include <ft2build.h>
@@ -22,7 +22,6 @@
#include FT_OUTLINE_H
#include "ftsmooth.h"
#include "ftgrays.h"
-#include "ftspic.h"
#include "ftsmerrs.h"
@@ -31,6 +30,26 @@
static FT_Error
ft_smooth_init( FT_Renderer render )
{
+
+#ifndef FT_CONFIG_OPTION_SUBPIXEL_RENDERING
+
+ FT_Vector* sub = render->root.library->lcd_geometry;
+
+
+ /* set up default subpixel geometry for striped RGB panels. */
+ sub[0].x = -21;
+ sub[0].y = 0;
+ sub[1].x = 0;
+ sub[1].y = 0;
+ sub[2].x = 21;
+ sub[2].y = 0;
+
+#elif 0 /* or else, once ClearType patents expire */
+
+ FT_Library_SetLcdFilter( render->root.library, FT_LCD_FILTER_DEFAULT );
+
+#endif
+
render->clazz->raster_class->raster_reset( render->raster, NULL, 0 );
return 0;
@@ -130,7 +149,11 @@
slot->internal->flags &= ~FT_GLYPH_OWN_BITMAP;
}
- ft_glyphslot_preset_bitmap( slot, mode, origin );
+ if ( ft_glyphslot_preset_bitmap( slot, mode, origin ) )
+ {
+ error = FT_THROW( Raster_Overflow );
+ goto Exit;
+ }
/* allocate new one */
if ( FT_ALLOC_MULT( bitmap->buffer, bitmap->rows, bitmap->pitch ) )
@@ -220,7 +243,7 @@
}
if ( lcd_filter_func )
- lcd_filter_func( bitmap, mode, lcd_weights );
+ lcd_filter_func( bitmap, lcd_weights );
}
#else /* !FT_CONFIG_OPTION_SUBPIXEL_RENDERING */
@@ -235,33 +258,40 @@
unsigned int width = bitmap->width;
int pitch = bitmap->pitch;
+ FT_Vector* sub = slot->library->lcd_geometry;
- /* Render 3 separate monochrome bitmaps, shifting the outline */
- /* by 1/3 pixel. */
- width /= 3;
- bitmap->buffer += width;
+ /* Render 3 separate monochrome bitmaps, shifting the outline. */
+ width /= 3;
+ FT_Outline_Translate( outline,
+ -sub[0].x,
+ -sub[0].y );
error = render->raster_render( render->raster, &params );
if ( error )
goto Exit;
- FT_Outline_Translate( outline, -21, 0 );
- x_shift -= 21;
bitmap->buffer += width;
-
+ FT_Outline_Translate( outline,
+ sub[0].x - sub[1].x,
+ sub[0].y - sub[1].y );
error = render->raster_render( render->raster, &params );
+ bitmap->buffer -= width;
if ( error )
goto Exit;
- FT_Outline_Translate( outline, 42, 0 );
- x_shift += 42;
- bitmap->buffer -= 2 * width;
-
+ bitmap->buffer += 2 * width;
+ FT_Outline_Translate( outline,
+ sub[1].x - sub[2].x,
+ sub[1].y - sub[2].y );
error = render->raster_render( render->raster, &params );
+ bitmap->buffer -= 2 * width;
if ( error )
goto Exit;
+ x_shift -= sub[2].x;
+ y_shift -= sub[2].y;
+
/* XXX: Rearrange the bytes according to FT_PIXEL_MODE_LCD. */
/* XXX: It is more efficient to render every third byte above. */
@@ -286,34 +316,43 @@
{
int pitch = bitmap->pitch;
+ FT_Vector* sub = slot->library->lcd_geometry;
+
- /* Render 3 separate monochrome bitmaps, shifting the outline */
- /* by 1/3 pixel. Triple the pitch to render on each third row. */
+ /* Render 3 separate monochrome bitmaps, shifting the outline. */
+ /* Notice that the subpixel geometry vectors are rotated. */
+ /* Triple the pitch to render on each third row. */
bitmap->pitch *= 3;
bitmap->rows /= 3;
- bitmap->buffer += pitch;
-
+ FT_Outline_Translate( outline,
+ -sub[0].y,
+ sub[0].x );
error = render->raster_render( render->raster, &params );
if ( error )
goto Exit;
- FT_Outline_Translate( outline, 0, 21 );
- y_shift += 21;
bitmap->buffer += pitch;
-
+ FT_Outline_Translate( outline,
+ sub[0].y - sub[1].y,
+ sub[1].x - sub[0].x );
error = render->raster_render( render->raster, &params );
+ bitmap->buffer -= pitch;
if ( error )
goto Exit;
- FT_Outline_Translate( outline, 0, -42 );
- y_shift -= 42;
- bitmap->buffer -= 2 * pitch;
-
+ bitmap->buffer += 2 * pitch;
+ FT_Outline_Translate( outline,
+ sub[1].y - sub[2].y,
+ sub[2].x - sub[1].x );
error = render->raster_render( render->raster, &params );
+ bitmap->buffer -= 2 * pitch;
if ( error )
goto Exit;
+ x_shift -= sub[2].y;
+ y_shift += sub[2].x;
+
bitmap->pitch /= 3;
bitmap->rows *= 3;
}
@@ -403,7 +442,7 @@
(FT_Renderer_GetCBoxFunc) ft_smooth_get_cbox, /* get_glyph_cbox */
(FT_Renderer_SetModeFunc) ft_smooth_set_mode, /* set_mode */
- (FT_Raster_Funcs*)&FT_GRAYS_RASTER_GET /* raster_class */
+ (FT_Raster_Funcs*)&ft_grays_raster /* raster_class */
)
@@ -430,7 +469,7 @@
(FT_Renderer_GetCBoxFunc) ft_smooth_get_cbox, /* get_glyph_cbox */
(FT_Renderer_SetModeFunc) ft_smooth_set_mode, /* set_mode */
- (FT_Raster_Funcs*)&FT_GRAYS_RASTER_GET /* raster_class */
+ (FT_Raster_Funcs*)&ft_grays_raster /* raster_class */
)
@@ -457,7 +496,7 @@
(FT_Renderer_GetCBoxFunc) ft_smooth_get_cbox, /* get_glyph_cbox */
(FT_Renderer_SetModeFunc) ft_smooth_set_mode, /* set_mode */
- (FT_Raster_Funcs*)&FT_GRAYS_RASTER_GET /* raster_class */
+ (FT_Raster_Funcs*)&ft_grays_raster /* raster_class */
)
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-23 15:33:19 +0000