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Make subpixel positioning match that of Gecko. #1715

Merged
merged 1 commit into from Sep 19, 2017
Merged

Make subpixel positioning match that of Gecko. #1715

merged 1 commit into from Sep 19, 2017
+72 −25

Commits on Sep 18, 2017

  1. Make subpixel positioning match that of Gecko. 

    Simplify the quantization function, and add unit tests.

Modify the shader to correctly add the glyph subpixel offset
before truncating the value.

With these changes, the glyph rendering is pixel-perfect with
Gecko in all the test cases I checked.

Fixes #1270.
    @gw3583
    gw3583 committed Sep 18, 2017
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