/* */
/* Anti-aliasing renderer interface (body). */
/* */
-/* Copyright 2000-2001, 2002, 2003, 2004, 2005, 2006, 2009 by */
+/* Copyright 2000-2006, 2009-2012 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
FT_Error error;
FT_Outline* outline = NULL;
FT_BBox cbox;
- FT_UInt width, height, height_org, width_org, pitch;
+ FT_Pos width, height, pitch;
+#ifndef FT_CONFIG_OPTION_SUBPIXEL_RENDERING
+ FT_Pos height_org, width_org;
+#endif
FT_Bitmap* bitmap;
FT_Memory memory;
FT_Int hmul = mode == FT_RENDER_MODE_LCD;
cbox.xMax = FT_PIX_CEIL( cbox.xMax );
cbox.yMax = FT_PIX_CEIL( cbox.yMax );
- width = (FT_UInt)( ( cbox.xMax - cbox.xMin ) >> 6 );
- height = (FT_UInt)( ( cbox.yMax - cbox.yMin ) >> 6 );
+ if ( cbox.xMin < 0 && cbox.xMax > FT_INT_MAX + cbox.xMin )
+ {
+ FT_ERROR(( "ft_smooth_render_generic: glyph too large:"
+ " xMin = %d, xMax = %d\n",
+ cbox.xMin >> 6, cbox.xMax >> 6 ));
+ return Smooth_Err_Raster_Overflow;
+ }
+ else
+ width = ( cbox.xMax - cbox.xMin ) >> 6;
+
+ if ( cbox.yMin < 0 && cbox.yMax > FT_INT_MAX + cbox.yMin )
+ {
+ FT_ERROR(( "ft_smooth_render_generic: glyph too large:"
+ " yMin = %d, yMax = %d\n",
+ cbox.yMin >> 6, cbox.yMax >> 6 ));
+ return Smooth_Err_Raster_Overflow;
+ }
+ else
+ height = ( cbox.yMax - cbox.yMin ) >> 6;
+
bitmap = &slot->bitmap;
memory = render->root.memory;
+#ifndef FT_CONFIG_OPTION_SUBPIXEL_RENDERING
width_org = width;
height_org = height;
+#endif
/* release old bitmap buffer */
if ( slot->internal->flags & FT_GLYPH_OWN_BITMAP )
/* Required check is ( pitch * height < FT_ULONG_MAX ), */
/* but we care realistic cases only. Always pitch <= width. */
- if ( width > 0xFFFFU || height > 0xFFFFU )
+ if ( width > 0x7FFF || height > 0x7FFF )
{
- FT_ERROR(( "ft_smooth_render_generic: glyph too large: %d x %d\n",
+ FT_ERROR(( "ft_smooth_render_generic: glyph too large: %u x %u\n",
width, height ));
return Smooth_Err_Raster_Overflow;
}