Hi Felipe, Thanks for the info.
I will see if I can get some screenshots together that highlight the differences and then file a JIRA issue. The differences are not dramatic but noticeable enough to lessen the impression of "professional quality" of my application (in my opinion). P.S. I am only talking about text rendered in controls other than Canvas. Canvas font rendering is really awful on both my Windows machines and I so hope that LCD font smoothing is made available for Canvas before I have to ship. -jct -----Original Message----- From: openjfx-dev-boun...@openjdk.java.net [mailto:openjfx-dev-boun...@openjdk.java.net] On Behalf Of Felipe Heidrich Sent: Thursday, 22 August 2013 05:04 To: openjfx-dev@openjdk.java.net List Subject: Re: Poor quality font rendering Hi John T. In JFX we use DirectWrite to produce glyph images, which I believe it what IE10 uses (once upon the time I heard that Word used Uniscribe, which is a different MS library for text. Nowadays, I have no clue). Although we use the same base library it is possible to have differences caused by: a) we are still using our shader program to produce sub-pixel positioned glyphs (LCD). b) using different values for gamma correction (unlikely) But these problems would only cause very very subtle differences in the rendering (I think), and with a bit more time I should be able to fix both. Could you please provide a picture of exact case you are seeing (maybe file a jira) ? Thank you Felipe On Aug 21, 2013, at 5:53 AM, John C. Turnbull wrote: > I have only really tested JavaFX extensively on Windows so my comments > here apply mainly to that platform. > > > > It seems that even with a font smoothing type of LCD, font rendering > in JavaFX is not at the same level of quality of native applications. > My current experiences are with JavaFX 8 b103 and I find that all > rendered text in JavaFX appears of a significantly poorer quality than > that which I would see in Word for example or even in IE10 (which I > believe uses the same text rendering engine). Also, these observations are based on text in "standard" > controls and the quality of font rendering is dramatically worse > within the Canvas control. > > > > I am not an expert in font technology but I have read many times that > the levels of antialiasing for text that can be achieved in a > GPU-based renderer are always going to be less than that achieved in a CPU-based renderer. > This is often explained on the basis of graphics card drivers being > optimised for performance and the rapid rendering of triangles > commonly required in games rather than for rendering quality when it comes to text. > > > > Is this the reason why JavaFX font rendering appears less legible and > of a lower quality than native apps? > > If so, how does IE10 for example achieve a higher quality of rendering > when it seems to also use DirectWrite? > > Is the quality of JavaFX font rendering ever going to improve? > > > > Thanks, > > > > -jct >
