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In Firefox 65 beta, one of the option of ClearType rendering modes not works

eqlv12
eqlv12
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OS: Windows 10 Pro

Version: 65.0b7 (64-bit)

After I upgraded my Firefox to 65 beta, the option in about:config, `gfx.font_rendering.cleartype_params.rendering_mode=5` seems not to be effective. Is the entry is now obsolete?

OS: Windows 10 Pro Version: 65.0b7 (64-bit) After I upgraded my Firefox to 65 beta, the option in about:config, `gfx.font_rendering.cleartype_params.rendering_mode=5` seems not to be effective. Is the entry is now obsolete?

Modified by eqlv12

All Replies (1)

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
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Microsoft says this about the difference between 4 and 5:

4 = DWRITE_RENDERING_MODE_NATURAL

"Specifies that antialiasing is performed in the horizontal direction. This rendering mode allows glyphs to be positioned with subpixel precision and is therefore suitable for natural (i.e., resolution-independent) layout. The antialiasing may be either ClearType or grayscale depending on the text antialiasing mode."

5 = DWRITE_RENDERING_MODE_NATURAL_SYMMETRIC

"Similar to natural mode except that antialiasing is performed in both the horizontal and vertical directions. This is typically used at larger sizes to make curves and diagonal lines look smoother. The antialiasing may be either ClearType or grayscale depending on the text antialiasing mode."

But it sounds as though you are seeing something very different with 5 than you see with 4 (or -1, which I think defaults to NATURAL). What are you seeing?