Created attachment 8581142 [details] Blur.png User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:39.0) Gecko/20100101 Firefox/39.0 Build ID: 20150320030211 Steps to reproduce: Sorry if I filed for the wrong component because this is a UI problem (can't seem to find the exact thing) and this is my first time, so probably not a good report. This is related somewhat to: https://bugzilla.mozilla.org/show_bug.cgi?id=612081 but maybe in the sense for Intel HD Graphics. Mine is Intel HD Graphics 4400. Name: Thunderbird Version: 39.0a1 User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:39.0) Gecko/20100101 Thunderbird/39.0a1 Application Build ID: 20150321030208 browser.cache.disk.capacity: 358400 browser.cache.disk.filesystem_reported: 1 browser.cache.disk.smart_size_cached_value: 358400 browser.cache.disk.smart_size.first_run: false browser.cache.disk.smart_size.use_old_max: false browser.cache.use_new_backend: 1 browser.display.use_system_colors: true dom.experimental_forms: true dom.forms.autocomplete.experimental: true dom.indexedDB.experimental: true extensions.lastAppVersion: 39.0a1 font.name.sans-serif.x-western: Segoe UI font.size.inflation.disabledInMasterProcess: true general.useragent.locale: en-MY gfx.direct3d.last_used_feature_level_idx: 0 gfx.font_rendering.cleartype.always_use_for_content: true gfx.font_rendering.directwrite.enabled: true mail.openMessageBehavior.version: 1 mail.winsearch.enable: true mail.winsearch.firstRunDone: true mail.winsearch.global_reindex_time: 1424592888 mailnews.database.global.datastore.id: 2039e3b8-b543-443f-91a7-ac8b360fb16 network.cookie.prefsMigrated: true network.http.accept-encoding: xz, gzip, deflate network.http.spdy.enabled.v3-1: false network.predictor.cleaned-up: true places.database.lastMaintenance: 1426754285 places.history.expiration.transient_current_max_pages: 104318 plugin.importedState: true security.csp.experimentalEnabled: true security.OCSP.enabled: 0 Adapter Description: Intel(R) HD Graphics Family Vendor ID: 0x8086 Device ID: 0x0a16 Adapter RAM: Unknown Adapter Drivers: igdumdim64 igd10iumd64 igd10iumd64 igdumdim32 igd10iumd32 igd10iumd32 Driver Version: 10.18.14.4156 Driver Date: 3-3-2015 Adapter Description (GPU #2): NVIDIA GeForce 820M Vendor ID (GPU #2): 0x10de Device ID (GPU #2): 0x1140 Adapter RAM (GPU #2): 1024 Adapter Drivers (GPU #2): nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um Driver Version (GPU #2): 126.96.36.19975 Driver Date (GPU #2): 11-12-2014 Direct2D Enabled: true DirectWrite Enabled: true (6.2.9200.16571) ClearType Parameters: Gamma: 2200 Pixel Structure: R ClearType Level: 100 Enhanced Contrast: 0 WebGL Renderer: false GPU Accelerated Windows: 1/1 Direct3D 11 AzureCanvasBackend: direct2d 1.1 AzureSkiaAccelerated: 0 AzureFallbackCanvasBackend: cairo AzureContentBackend: direct2d 1.1 It seems this problem does not happen on current Firefox Nightly 39.0a1 x64. Steps to reproduce: 1. Go to Intel HD Graphics Control Panel > 3D 2. Under Conservative Morphological Anti-Aliasing, choose either Override Application Settings or Enhance Application Settings and Apply 3. Open Thunderbird Daily, texts become blurred after a few seconds. Actual results: Texts become blurred. However, when the cursor hovers an item to be selected, that particular section become clear instantly. And then blurred again after a few seconds. Expected results: Texts should be clear always.
4 years ago
See Also: → bug 612081
Occurs only with HWA enabled, correct?
Summary: Conservative Morphological Anti-Aliasing (CMAA) causing blurness → Conservative Morphological Anti-Aliasing (CMAA) causing blurness with HWA enabled
Created attachment 8590312 [details] Blur WLM 2012 comparison Yeah, only when enable Hardware Acceleration it will have blur effects. That's why running Safe Mode without Hardware Acceleration can't reproduce it. Interestingly, Microsoft's Windows Live Mail 2012 from Windows Essentials suite also suffers from this problem... From the screenshot, You can see that the Asian words from above (CMAA enabled) is noticeably blurred compared to the bottom one (CMAA disabled). This is also what was happening to Daily.
My 2 cents (Intel HD Graphices 4600, Windows 8.1 x64): 1. For the issue to manifest itself, not only CMAA, but also "Application Optimal Mode" needs to be enabled. 2. While disabling HWA in Mozilla (43.0) sets both gfx.direct2d.disabled and layers.acceleration.disabled flags, in order to work around the issue it's sufficient to only set layers.acceleration.disabled alone (gfx.direct2d.disabled has no effect). 3. Setting or clearing gfx.font_rendering.directwrite.enabled has no effect at all. It seems it was last available in 42.0 and is gone in 43.0. 4. While font blurriness indeed goes away on mouseover, fonts are still slightly AA-ed even if system-wide setting for "Smooth edges of screen fonts" is "off". The effect is less compared to the standard full-pixel AA when "Smooth edges of screen fonts" is "on". See <https://superuser.com/questions/1064589> for more details.
Is this still reproducible with all OS, driver, and application updates installed?
2 years ago
Status: UNCONFIRMED → RESOLVED
Last Resolved: 2 years ago
Resolution: --- → INCOMPLETE
You need to log in before you can comment on or make changes to this bug.