<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta content="text/html; charset=UTF-8" http-equiv="Content-Type"> </head> <body bgcolor="#ffffff" text="#000000"> Hi Mariano, Thanks for the samples and the details on your screen. Now I can tell what you see. Other Text Rasterization Engines, such as FreeType, CoreText and ClearType do auto-hinting of glyphs. This aligns glyph features to integer pixel coordinates at the expense of correct geometry. VectorEnginePlugin doesn't. It rasterizes glyphs just like any other vector graphics, respecting the true geometry of glyphs. This is only noticeable in horizontal lines, when they want to cover half a pixel or so. If you disable glyph caching, or (even slightly) zoom windows, then not even the position of glyphs is aligned to integer pixels, giving a more correct layout of text, making each instance of the same character be drawn differently. You can see this if you capture a screen and zoom the pixels to make them larger. This is a rather fundamental decision on how VectorEngine works. It doesn't "draw pixels", but applies a low pass filter and then samples a continuous shape. The older StrikeFonts were rendered with FreeType, and then captured as Bitmaps. Thanks, On 10/30/2022 10:28 AM, Mariano Montone via Cuis-dev wrote: <blockquote cite="mid:ccaec59e-9d55-258f-2a9e-f7eb26527844@gmail.com" type="cite"> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <div class="moz-cite-prefix">El 29/10/22 a las 21:01, Juan Vuletich escribió: </div> <blockquote type="cite" cite="mid:635DBEDF.1060201@cuis.st">Hi Mariano, On 10/29/2022 7:53 AM, Mariano Montone via Cuis-dev wrote: <blockquote type="cite">A thing I would like to adjust if it were possible, is that I feel like the font rendering loses some sharpness with VG; some fonts more than others, and some sizes more than others. </blockquote> You can tweak VectorEngineWithPluginSubPixel>>#defaultAntiAliasingWidth and then evaluate `TrueTypeFont allInstancesDo: [ :f | f releaseCachedState ].`, to try different parameters for the antialiasing filter. </blockquote> Ah, apologies to Gerald, I didn't see that part when he pointed it to me. <blockquote type="cite" cite="mid:635DBEDF.1060201@cuis.st"> Still, I'm curious. Can you post a Display using HybridCanvas/VectorCanvas and another using BitBltCanvas? Best if you can include some fonts/sizes you feel are sharp enough, and others that aren't. If file sizes are too big for the list (I believe it is 500kb once encoded in MIME64), please send them to me privately. </blockquote> I'm inserting some images below. Look at the equality symbol for example. I think the problem is that the greying of the font is too much and makes the font blurry. But my comparison is probably unfair, since I'm using the DejaVuBitmap font for the Bitmap case, with doesn't use the greying, or too little; but that's an example of what I mean "sharp". <blockquote type="cite" cite="mid:635DBEDF.1060201@cuis.st"> One question: What Display resolution do you use? Size of screen? Does the `Display size` in Cuis match the OS and physical screen resolution? (this is rarely the case on MacOS, unfortunately). </blockquote> I'm on Linux with screen size of 1366x768. Cuis Display is 1360x713. <blockquote type="cite" cite="mid:635DBEDF.1060201@cuis.st"> Finally, a screen capture of an editor in your host OS with some text that looks sharp to your eyes would be helpful. </blockquote> Bitmap Cuis (DejaVuBitmap) (sharp): <img moz-do-not-send="false" src="cid:part1.00060907.01010500@cuis.st" alt="" height="100" width="252"> Vector (DejaVuSans) (not sharp): <img moz-do-not-send="false" src="cid:part2.09040007.05040305@cuis.st" alt="" height="91" width="269"> Host OS app: <img moz-do-not-send="false" src="cid:part3.00020802.07020103@cuis.st" alt="" height="108" width="820"> I feel like the Host OS is using less greying around the fonts than Cuis and that makes it sharper. Thanks, Mariano </blockquote> <pre class="moz-signature" cols="72">-- Juan Vuletich cuis.st github.com/jvuletich researchgate.net/profile/Juan-Vuletich independent.academia.edu/JuanVuletich patents.justia.com/inventor/juan-manuel-vuletich linkedin.com/in/juan-vuletich-75611b3 twitter.com/JuanVuletich</pre> </body> </html>