638860 - Some font rendering features do not work properly (e.g. ligatures)

Status: RESOLVED INCOMPLETE

(Core :: Layout: Text and Fonts, defect)

Description

[The 8472]

User-Agent:       Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b13pre) Gecko/20110303 Firefox/4.0b13pre
Build Identifier: 

Some test cases showing advanced font rendering features in opentype web fonts do not work properly for me.

Screenshots will follow below.

I'm testing with HW acceleration and DirectWrite enabled but at least in the first test case this also occurs with them disabled.

Reproducible: Always

Comment 1

[The 8472]

Attachment: screenshot for the 1st testcase

http://behdad.org/webfont-test/x.html

the "fi" in the second case supposedly should render as a ligature

Comment 2

[The 8472]

Attachment: screenshot for the 2nd testcase

it should render similar to http://www.smeltery.net/fonts/megalopolis-extra

Note the missing ribbons, non-wavey double-S and various other differences.

Comment 3

[Jonathan Kew [:jfkthame]]

Please also post the contents of about:support from your system - thanks.

Comment 4

[The 8472]

  Modified Preferences

      Name

      Value

        accessibility.typeaheadfind.flashBar
        0

        browser.history_expire_days.mirror
        180

        browser.places.createdSmartBookmarks
        true

        browser.places.importBookmarksHTML
        false

        browser.places.importDefaults
        false

        browser.places.leftPaneFolderId
        -1

        browser.places.migratePostDataAnnotations
        false

        browser.places.smartBookmarksVersion
        2

        browser.places.updateRecentTagsUri
        false

        browser.startup.homepage_override.buildID
        20110303122446

        browser.startup.homepage_override.mstone
        rv:2.0b13pre

        browser.tabs.closeButtons
        3

        browser.tabs.selectOwnerOnClose
        false

        dom.event.contextmenu.enabled
        false

        dom.max_script_run_time
        1800

        dom.popup_allowed_events

        extensions.lastAppVersion
        4.0b13pre

        gfx.font_rendering.directwrite.enabled
        true

        layers.use-d3d10
        true

        network.cookie.cookieBehavior
        2

        network.cookie.prefsMigrated
        true

        network.http.max-connections
        10

        network.http.max-connections-per-server
        3

        network.http.max-persistent-connections-per-server
        3

        network.http.pipelining
        true

        network.http.pipelining.maxrequests
        10

        places.database.lastMaintenance
        1299253129

        places.history.expiration.transient_current_max_pages
        193225

        places.last_vacuum
        1279857391

        privacy.sanitize.migrateFx3Prefs
        true

        security.disable_button.openCertManager
        false

        security.warn_viewing_mixed
        false

  Graphics

        Adapter Description
        NVIDIA GeForce 9600 GT

        Vendor ID
        10de

        Device ID
        0622

        Adapter RAM
        512

        Adapter Drivers
        nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um

        Driver Version
        8.17.12.6099

        Driver Date
        10-16-2010

        Direct2D Enabled
        true

        DirectWrite Enabled
        true (6.1.7600.16385, font cache n/a)

        WebGL Renderer
        Google Inc. -- ANGLE -- OpenGL ES 2.0 (ANGLE 0.0.0.541)

        GPU Accelerated Windows
        1/1 Direct3D 10

Comment 5

[Wayne Mery (:wsmwk)]

Reporter, do you still see this when using a current version?

Comment 6

[Phoenix]

Resolved per whiteboard