-
Show log
Commit
-
Hash : 72271140
Author :
Date : 2009-06-18T15:42:52
Fix B/W rasterization of subglyphs with different drop-out modes. Normally, the SCANMODE instruction (if present) to set the drop-out mode in a TrueType font is located in the `prep' table only and thus valid for all glyphs. However, there are fonts like `pala.ttf' which additionally contain this instruction in the hinting code of some glyphs (but not all). As a result it can happen that a composite glyph needs multiple drop-out modes for its subglyphs since the rendering state gets reset for each subglyph. FreeType collects the hinted outlines from all subglyphs, then it sends the data to the rasterizer. It also sends the drop-out mode -- after hinting has been applied -- and here is the error: It sends the drop-out mode of the last subglyph only; drop-out modes of all other subglyphs are lost. This patch fixes the problem; it adds a second, alternative mechanism to pass the drop-out mode: For each contour, the rasterizer now checks the first `tags' array element. If bit 2 is set, bits 5-7 contain the contour's drop-out mode, overriding the global drop-out mode. * include/freetype/ftimage.h (FT_CURVE_TAG_HAS_SCANMODE): New macro. * src/truetype/ttgload.c (TT_Hint_Glyph): Store drop-out mode in `tags[0]'. * src/raster/ftraster.c (Flow_Up, Overshoot_Top, Overshoot_Bottom): Use bits 3-5 instead of 0-2. (New_Profile): Set the drop-out mode in the profile's `flags' field. (Decompose_Curve): Check `tags[0]' and set `dropOutControl' if necessary. (Vertical_Sweep_Drop, Horizontal_Sweep_Drop, Horizontal_Gray_Sweep_Drop, Draw_Sweep): Use the profile's drop-out mode.
-
Properties
-
Git HTTP https://git.kmx.io/kc3-lang/freetype.git Git SSH git@git.kmx.io:kc3-lang/freetype.git Public access ? public Description Users
Tags
-
README
-
Special notes to Unix users =========================== Please read the file `docs/UPGRADE.UNIX'. It contains important information regarding the installation of FreeType on Unix systems, especially GNU based operating systems like GNU/Linux. FreeType 2's library is called `libfreetype', FreeType 1's library is called `libttf'. They are *not* compatible! FreeType 2.3.9 ============== Please read the docs/CHANGES file, it contains IMPORTANT INFORMATION. Read the files `docs/INSTALL' for installation instructions. The FreeType 2 API reference is located in `docs/reference'; use the file `ft2-doc.html' as the top entry point. Additional documentation is available as a separate package from our sites. Go to http://download.savannah.gnu.org/releases/freetype/ and download one of the following files. freetype-doc-2.3.9.tar.bz2 freetype-doc-2.3.9.tar.gz ftdoc239.zip Bugs ==== Please report bugs by e-mail to `freetype-devel@nongnu.org'. Don't forget to send a detailed explanation of the problem -- there is nothing worse than receiving a terse message that only says `it doesn't work'. Alternatively, you may submit a bug report at https://savannah.nongnu.org/bugs/?group=freetype Enjoy! The FreeType Team ---------------------------------------------------------------------- Copyright 2006, 2007, 2008, 2009 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. --- end of README ---