<html><head><style type="text/css"></style></head><body><div style="font-family:verdana,helvetica,sans-serif;font-size:10pt"><div>Now with the attachments. Sorry! Regarding the tests made on the submitted patch, I tried 2 configurations successfully: 1. antialias=true,rgba=none  => FT_Render_Mode=FT_RENDER_MODE_NORMAL (XftSwapImage() is executed) 2. antialias=true,rgba=rgb    => FT_Render_Mode=FT_RENDER_MODE_LCD (XftSwapImage() is bypassed) If needed, I would be glad to perform further tests on the X server-client configuration mentioned below. </div><div style="font-family:verdana, helvetica, sans-serif;font-size:10pt"> <div style="font-family:times new roman, new york, times, serif;font-size:12pt"><hr size="1">From: Mario Vergara To: xorg-devel@lists.x.org Sent: Wed, May 18, 2011 12:47:48 AM Subject: [xorg-devel][patch] libXft subpixel hinting no image swap <div style="font-family:verdana, helvetica, sans-serif;font-size:10pt;"><div>Hi DevTeam, I would like to submit the attached patch to your consideration. It solves a problem regarding bad rendering (e.g. 'yellow halo' font background) when subpixel hinting is enabled in libXft and the application runs in a mixed endian X client-server configuration. This case is quite atypical but it can be found in enterprise environments where servers are grouped by function, for example: login, presentation (X servers), batch processing, etc. Here are the technical details: 1. X client ---------- All X clients run in RHEL 4 x86_64 Linux machines (little endian). Linux 2.6.9-78.0.17.ELsmp #1 SMP Thu Mar 5 04:58:34 EST 2009 x86_64 x86_64 x86_64 GNU/Linux Red Hat Enterprise Linux AS release 4 (Nahant Update 7) 2. X server ----------- All X servers run in Solaris machines (big endian) SunOS 5.10 Generic_138888-06 sun4u sparc SUNW,Sun-Fire-V440 -------------------------------------------------------------- > xdpyinfo name of display:    :13.0 version number:    11.0 vendor string:    Citrix Systems Inc vendor release number:    59809 maximum request size:  4194300 bytes motion buffer size:  256 bitmap unit, bit order, padding:    32, MSBFirst, 32 image byte order:    MSBFirst number of supported pixmap formats:    3 supported pixmap formats:     depth 1, bits_per_pixel 1, scanline_pad 32     depth 8, bits_per_pixel 8, scanline_pad 32     depth 24, bits_per_pixel 32, scanline_pad 32 keycode range:    minimum 8, maximum 207 focus:  window 0x1000003, revert to PointerRoot number of extensions:    14     BIG-REQUESTS     DOUBLE-BUFFER     Extended-Visual-Information     GLX     MIT-SHM     MIT-SUNDRY-NONSTANDARD     RECORD     SECURITY     SGI-GLX     SHAPE     SYNC     TOG-CUP     XC-MISC     XTEST default screen number:    0 number of screens:    1 screen #0:   dimensions:    1280x800 pixels (325x203 millimeters)   resolution:    100x100 dots per inch   depths (1):    24   root window id:    0x26   depth of root window:    24 planes   number of colormaps:    minimum 1, maximum 1   default colormap:    0x22   default number of colormap cells:    256   preallocated pixels:    black 0, white 16777215   options:    backing-store NO, save-unders NO   largest cursor:    32x32   current input event mask:    0xfa2033     KeyPressMask             KeyReleaseMask           EnterWindowMask              LeaveWindowMask          ButtonMotionMask         StructureNotifyMask          SubstructureNotifyMask   SubstructureRedirectMask FocusChangeMask              PropertyChangeMask       ColormapChangeMask    number of visuals:    1   default visual id:  0x23   visual:     visual id:    0x23     class:    TrueColor     depth:    24 planes     available colormap entries:    256 per subfield     red, green, blue masks:    0xff0000, 0xff00, 0xff     significant bits in color specification:    8 bits ----------------------------------------------------------------- 3. Test application ------------------ The application used to test the submitted patch was 'rxvt-unicode' linked to patched versions of Xft and Freetype as follows: * freetype_2.4.3 + infinality patches: <a target="_blank" href="http://www.infinality.net/files/freetype-add-subpixel-hinting-infinality-20101114-1.patch">http://www.infinality.net/files/freetype-add-subpixel-hinting-infinality-20101114-1.patch</a> <a target="_blank" href="http://www.infinality.net/files/freetype-enable-subpixel-hinting-infinality-20100909-1.patch">http://www.infinality.net/files/freetype-enable-subpixel-hinting-infinality-20100909-1.patch</a> <a target="_blank" href="http://www.infinality.net/files/freetype-entire-infinality-patchset-20101114-1.patch">http://www.infinality.net/files/freetype-entire-infinality-patchset-20101114-1.patch</a> <a target="_blank" href="http://www.infinality.net/files/freetype-filter-envvar-fix-20101117-1.patch">http://www.infinality.net/files/freetype-filter-envvar-fix-20101117-1.patch</a> * libXft_2.2.0 <a rel="nofollow" target="_blank" href="http://archive.ubuntu.com/ubuntu/pool/main/x/xft/xft_2.1.14.orig.tar.gz"></a><a rel="nofollow" target="_blank" href="http://archive.ubuntu.com/ubuntu/pool/main/x/xft/xft_2.1.14-1ubuntu1.diff.gz"></a><a rel="nofollow" target="_blank" href="https://launchpad.net/ubuntu/+archive/primary/+files/xft_2.2.0.orig.tar.gz">https://launchpad.net/ubuntu/+archive/primary/+files/xft_2.2.0.orig.tar.gz</a> <a rel="nofollow" target="_blank" href="https://launchpad.net/ubuntu/+archive/primary/+files/xft_2.2.0-2ubuntu2.diff.gz">https://launchpad.net/ubuntu/+archive/primary/+files/xft_2.2.0-2ubuntu2.diff.gz</a> patched with: libXft-2.2.0/debian/patches/100-libXft-2.1.10-lcd-filter-3.patch -> and <- xft_2.2.0-subpixel-hinting-no-image-swap.patch (attached) * rxvt-unicode_9.10 <a target="_blank" href="http://dist.schmorp.de/rxvt-unicode/Attic/rxvt-unicode-9.10.tar.bz2">http://dist.schmorp.de/rxvt-unicode/Attic/rxvt-unicode-9.10.tar.bz2</a>      I wonder if you could review the patch and let me know if it solves a general issue or if it is only applicable to my particular case. I have also attached a sample image of the overall result. Thanks & BR, /Mario. </div> </div></div></div> </div></body></html>