Re: Accounting for SHELL in ./configure

2024-05-01 Thread Behdad Esfahbod
ed, we don't keep it under version control). > > Cheers, > Mohammad > > On 5/1/24 11:17 PM, Behdad Esfahbod wrote: > > Scratch that. > > > > Where is it exactly failing? On Unix, the build system is essentially > > autoconf, so it should respect SHELL as you su

Re: Accounting for SHELL in ./configure

2024-05-01 Thread Behdad Esfahbod
Scratch that. Where is it exactly failing? On Unix, the build system is essentially autoconf, so it should respect SHELL as you suggest. behdad http://behdad.org/ On Wed, May 1, 2024 at 3:15 PM Behdad Esfahbod wrote: > Can you check if also setting CONFIG_SHELL helps? > > behd

Re: Accounting for SHELL in ./configure

2024-05-01 Thread Behdad Esfahbod
is free to use > any shell they want with any program's build. > > Cheers, > Mohammad > > > > > On May 1, 2024 10:55:05 PM GMT+02:00, Behdad Esfahbod > wrote: > >> I'm not talking about the user overriding the shell specifically. I'm >> talking about users w

Re: Accounting for SHELL in ./configure

2024-05-01 Thread Behdad Esfahbod
posibility, not the > developer's. So no need to worry about that; the important thing is to give > users the freedon to customize for their custom environments (as GNU > Autoconf does for example; but Autoconf is not used in FreeType). > > Cheers, > Mohammad > > > >

Re: Accounting for SHELL in ./configure

2024-05-01 Thread Behdad Esfahbod
There's no guarantee that the user's shell is sh-compatible. autoconf really means sh here, because that's the shell the script is written for. Just symlink your favorite shell to sh then, if it's compatible. behdad http://behdad.org/ On Wed, May 1, 2024 at 2:13 PM Mohammad Akhlaghi wrote: >

Re: Creating a FreeType GitLab merge request

2024-01-23 Thread Behdad Esfahbod
Hi David, As mentioned on the issue, the main thing I like to see you address is, instead of walking all subtables, only walk subtables from 'kern' features. behdad On Tue, Jan 23, 2024 at 10:43 AM David Saltzman wrote: > it might be useful to add (also) either compile-time or runtime switch

Re: The current state of rendering and overlap

2023-12-20 Thread Behdad Esfahbod
On Tue, Dec 19, 2023 at 1:02 PM Skef Iterum wrote: > CFF2 is released, has been for years. As far as I know there's no solid > convention for ignoring unrecognized operators in a CharString, so this > would be CFF2 minor 1 at best. Which would be years out in terms of > support. > > Practically

Re: The current state of rendering and overlap

2023-12-19 Thread Behdad Esfahbod
On Tue, Dec 19, 2023 at 11:25 AM Alexei Podtelezhnikov wrote: > > Note that freetype does not use the overlap flags to determine the path > fill rule (winding vs even-odd), it always uses winding for TT or CFF2 > variable fonts, as the spec mandates; the discussion here is about freetype > using

Re: The current state of rendering and overlap

2023-12-19 Thread Behdad Esfahbod
CFF was even-odd. CFF2 is non-zero winding. behdad http://behdad.org/ On Tue, Dec 19, 2023 at 9:50 AM Hin-Tak Leung wrote: > This is the same as the winding rule concept (overlap once = wounded > twice) ... I seem to remember one of them is even-odd and the other is > non-zero, and quite

Re: [IDEA] Facilities to extract TT fonts from TTC font collections

2023-10-23 Thread Behdad Esfahbod
If you don't need to do this from C necessarily, check out ftCLI: https://github.com/ftCLI/FoundryTools-CLI Or "fonttools ttLib --help" from fonttools: https://github.com/fonttools/fonttools behdad http://behdad.org/ On Mon, Oct 23, 2023 at 6:44 AM Francesco Pretto wrote: > Hello, > >

Re: Progress update on alternative rendering engines project

2023-10-09 Thread Behdad Esfahbod
I don't think this (caching flatten outlines) is a good idea. Pretty much all serious implementations cache the rendered image. And pretty much all uses of FreeType don't render the entire glyph set. And must implementations care a lot more about loading performance. I know you are suggesting new

Re: ReactOS: stack vs heap

2023-09-04 Thread Behdad Esfahbod
On Mon, Sep 4, 2023 at 8:27 PM Werner LEMBERG wrote: > > > Upon further investigation, I think my proposed change is correct. > > Thanks a lot, committed! > Thanks. One thing I don't understand, is the "+ 2" in the code below: AF_LatinBlue blue_sorted[AF_BLUE_STRINGSET_MAX_LEN + 2];

Re: ReactOS: stack vs heap

2023-09-04 Thread Behdad Esfahbod
Upon further investigation, I think my proposed change is correct. behdad http://behdad.org/ On Mon, Sep 4, 2023 at 4:26 PM Behdad Esfahbod wrote: > What I said is wrong. But the blues array should be dynamically allocated, > and use a embedded version for small values. I'l

Re: ReactOS: stack vs heap

2023-09-04 Thread Behdad Esfahbod
What I said is wrong. But the blues array should be dynamically allocated, and use a embedded version for small values. I'll work on it. behdad http://behdad.org/ On Mon, Sep 4, 2023 at 3:47 PM Behdad Esfahbod wrote: > On Mon, Sep 4, 2023 at 3:39 PM Behdad Esfahbod wrote: > >> O

Re: ReactOS: stack vs heap

2023-09-04 Thread Behdad Esfahbod
On Mon, Sep 4, 2023 at 3:39 PM Behdad Esfahbod wrote: > On Sat, Sep 2, 2023 at 12:31 AM Alexei Podtelezhnikov > wrote: > >> > >> > Wanted to point out that compiling with gcc and adding >> "-stack-usage=2000" to get reports about stacks larger tha

Re: ReactOS: stack vs heap

2023-09-04 Thread Behdad Esfahbod
On Sat, Sep 2, 2023 at 12:31 AM Alexei Podtelezhnikov wrote: > > > > Wanted to point out that compiling with gcc and adding > "-stack-usage=2000" to get reports about stacks larger than 2000 bytes is > probably the easiest way to track down large stacks at the moment. Note > that

CFF loading overhead in tracing

2023-07-30 Thread Behdad Esfahbod
Hi, In benchmarking FreeType face loading, I noticed that the following two loops take considerable time when loading CFF1 face: --- a/src/cff/cffobjs.c +++ b/src/cff/cffobjs.c @@ -695,8 +695,8 @@ FT_TRACE4(( " %5d ", idx + 390 )); - for ( l = 0; l < s1len; l++ ) -

Re: CFF loading overhead in tracing

2023-07-30 Thread Behdad Esfahbod
Humm. I cannot reproduce this anymore. Will report if that changes. behdad http://behdad.org/ On Sun, Jul 30, 2023 at 12:41 PM Behdad Esfahbod wrote: > Hi, > > In benchmarking FreeType face loading, I noticed that the following two > loops take considerable time when loadi

Re: GSoC 2023

2023-02-03 Thread Behdad Esfahbod
I apologize. I forgot about ftbench. behdad http://behdad.org/ On Fri, Feb 3, 2023 at 9:22 AM Behdad Esfahbod wrote: > Hi Werner, > > One idea would be to develop a performance benchmarking suite of various > aspects of the library's functionality. I don't think FreeType current

HarfBuzz now renders COLRv1

2022-12-24 Thread Behdad Esfahbod
Hi, HarfBuzz now renders COLRv1, in two ways: 1. a native implementation, 2. using the FreeType API. For the latter, we found a couple of issues that I like to report: - In using FT_Get_Paint_Layers(), I found that I need to initialize the out-parameter FT_OpaquePaint to zero, otherwise

Re: FT_Get_Advance() too slow?

2022-07-30 Thread Behdad Esfahbod
Hi Werner, Regarding this thread: https://lists.nongnu.org/archive/html/freetype-devel/2022-05/msg4.html I finally spent enough time on it to have a clue. I wrote up my findings in a document: https://docs.google.com/document/d/1wskYbA-czBt57oH9gEuGf3sWbTx7bfOiEIcDs36-heo The short answer

Re: FT_Get_Advance() too slow?

2022-07-23 Thread Behdad Esfahbod
Hi Werner, Any chance the one-line patch below can be applied? Thanks, behdad http://behdad.org/ On Fri, May 20, 2022 at 11:05 AM Behdad Esfahbod wrote: > Hi, > > I'm debugging an issue where FT_Get_Advance(), even in its fast path > (NO_HINTING), seems to be much slower than th

FT_Get_Advance() too slow?

2022-05-20 Thread Behdad Esfahbod
Hi, I'm debugging an issue where FT_Get_Advance(), even in its fast path (NO_HINTING), seems to be much slower than the equivalent HarfBuzz code. Much of it seems to be overhead because we have to call FT_Get_Advance() one glyph at a time and it does multiple indirections before getting the

Re: [ft-devel] GSoC 2020 - Integrating Distance Field Generation in FreeType

2020-09-07 Thread Behdad Esfahbod
On Sat, Aug 29, 2020 at 9:12 PM Anuj Verma wrote: > Hello All, > > I have written the final report for my project. > > You can check it out here: > https://gitlab.com/-/snippets/2007070 > Thank you Anuj. I really enjoyed observing your work this summer, even though I didn't get to contribute

Re: mmap and Windows

2020-08-29 Thread Behdad Esfahbod
Here's how HarfBuzz does it: https://github.com/harfbuzz/harfbuzz/blob/master/src/hb-blob.cc On Sat, Aug 29, 2020, 10:33 AM Vincent Torri wrote: > On Sat, Aug 29, 2020 at 11:52 AM Werner LEMBERG wrote: > > > > > > >> If this really makes a difference on Windows, and if you want to > > >>

Re: I'm back

2020-06-29 Thread Behdad Esfahbod
Hi David, Thanks for the detailed response. On Mon, Jun 29, 2020 at 5:07 PM David Turner wrote: > > > Le dim. 28 juin 2020 à 04:19, Behdad Esfahbod a > écrit : > >> Hi David, >> >> I've been meaning to reply to your request but the list of things I >

Re: I'm back

2020-06-27 Thread Behdad Esfahbod
Hi David, I've been meaning to reply to your request but the list of things I wanted to communicate kept growing exponentially and so I have not been able to say. But here, from a technical perspective this is my biggest issue, which you can also see as a roadmap:

Re: Logging Library-GSOC

2020-06-20 Thread Behdad Esfahbod
On Sat, Jun 13, 2020 at 10:59 PM Werner LEMBERG wrote: > > > I find it a *very* bad idea to have code in FreeType that would > > write to a file. Specially bad if that can be controlled by an > > env-var. > > Interesting. Please explain. Do you fear security issues? > Sorry, forgot to reply

Re: Logging Library-GSOC

2020-06-20 Thread Behdad Esfahbod
On Sat, Jun 13, 2020 at 10:59 PM Werner LEMBERG wrote: > > > I find it a *very* bad idea to have code in FreeType that would > > write to a file. Specially bad if that can be controlled by an > > env-var. > > Interesting. Please explain. Do you fear security issues? > > > I still think what's

Re: [Freetype-devel] Re: GSOC - Distance Fields

2020-06-20 Thread Behdad Esfahbod
Hi Anuj, On Tue, Jun 16, 2020 at 9:43 PM Anuj Verma wrote: > Hello Behdad, > > > First, let me congratulate you. This is a very thorough and impressive > piece of work for such a short time period. > > Thank you for that. Viktor's paper did help me a lot while writing the > code. I guess you

Re: [Freetype-devel] Re: GSOC - Distance Fields

2020-06-20 Thread Behdad Esfahbod
Werner! On Wed, Jun 17, 2020 at 12:23 AM Werner LEMBERG wrote: > > Also, why doesn't FreeType use floats? Is it just because of > > platform which doesn't have floating point type? > > Yes. The original intention of FreeType was to provide support for > embedded devices, which usually are

Re: [Freetype-devel] Re: GSOC - Distance Fields

2020-06-20 Thread Behdad Esfahbod
On Tue, Jun 16, 2020 at 9:54 PM Anuj Verma wrote: > > > Also I'm surprised that you haven't put the code get_min_distance code > for each edge type into a function. > > Would you prefer that I comment re these on github? > > I don't think that will be necessary. I will fix that while adding in >

Re: [Freetype-devel] Re: GSOC - Distance Fields

2020-06-20 Thread Behdad Esfahbod
On Wed, Jun 17, 2020 at 7:22 PM Alexei Podtelezhnikov wrote: > Hi Anuj, > > Please let me finish my thoughts below... > > >> Each curved segment has a large number of neighboring grid points. > >> each of which has a unique nearest projection on the curve. The curve > >> is naturally sampled by

Re: [Freetype-devel] Re: GSOC - Distance Fields

2020-06-16 Thread Behdad Esfahbod
On Tue, Jun 16, 2020 at 11:02 AM Werner LEMBERG wrote: > > > For SIMD, I studied what's available last year for HarfBuzz. I > > documented what I found here: > > > > https://github.com/harfbuzz/harfbuzz/blob/simd/src/hb-simd.hh > > Thanks for the link, it's an interesting read. > > > If you

Re: [Freetype-devel] Re: GSOC - Distance Fields

2020-06-16 Thread Behdad Esfahbod
to generate the output. But even solving computing roots or the Newton-Raphson can be done in SIMD for up to 8 samples at a time. On Tue, Jun 16, 2020 at 8:51 AM Behdad Esfahbod wrote: > Hi Anuj, > > First, let me congratulate you. This is a very thorough and impressive > p

Re: [Freetype-devel] Re: GSOC - Distance Fields

2020-06-16 Thread Behdad Esfahbod
On Tue, Jun 16, 2020 at 9:49 AM Alexei Podtelezhnikov wrote: > Anuj, > > Each curved segment has a large number of neighboring grid points. > each of which has a unique nearest projection on the curve. The curve > is naturally sampled by this projection points a very large number of > times and

Re: [Freetype-devel] Re: GSOC - Distance Fields

2020-06-16 Thread Behdad Esfahbod
On Tue, Jun 16, 2020 at 9:50 AM Werner LEMBERG wrote: > >>> - Your handling of two edges meeting at a corner is solid. That's > >>> exactly what we do in GLyphy. However, I'm also now convinced > >>> that there is no way to produce SDF from contours that might > >>> overlap. Imagine a

Re: [Freetype-devel] Re: GSOC - Distance Fields

2020-06-16 Thread Behdad Esfahbod
Also I'm surprised that you haven't put the code get_min_distance code for each edge type into a function. Would you prefer that I comment re these on github? On Tue, Jun 16, 2020 at 8:53 AM Behdad Esfahbod wrote: > Oh, I forgot: > > After you do all this, you will realize that

Re: [Freetype-devel] Re: GSOC - Distance Fields

2020-06-16 Thread Behdad Esfahbod
On Mon, Jun 15, 2020 at 9:47 AM Alexei Podtelezhnikov wrote: > On Mon, Jun 15, 2020 at 11:03 AM Anuj Verma wrote: > >> > > > For linear segments, it will save more than 90% according to your > > > table. Then you will see that splitting Bezier curves is not such a > > > bad option. In general,

Re: [Freetype-devel] Re: GSOC - Distance Fields

2020-06-16 Thread Behdad Esfahbod
. This is what GLyphy does and some of the other solutions as well. On Tue, Jun 16, 2020 at 8:51 AM Behdad Esfahbod wrote: > Hi Anuj, > > First, let me congratulate you. This is a very thorough and impressive > piece of work for such a short time period. I read your code over a week > ago b

Re: [Freetype-devel] Re: GSOC - Distance Fields

2020-06-16 Thread Behdad Esfahbod
Hi Anuj, First, let me congratulate you. This is a very thorough and impressive piece of work for such a short time period. I read your code over a week ago but couldn't sit down and type this. I see there has been lots of progress since. I'll just summarize: - I highly suggest you stick to

Re: Logging Library-GSOC

2020-06-13 Thread Behdad Esfahbod
I find it a *very* bad idea to have code in FreeType that would write to a file. Specially bad if that can be controlled by an env-var. I still think what's desired can be done best by just revamping and writing custom code in FreeType itself. This is my last word on this particular topic, but

Re: Logging library

2020-06-08 Thread Behdad Esfahbod
On Mon, Jun 8, 2020 at 9:53 AM Werner LEMBERG wrote: > > > I want to raise same concerns that David did in a thread a few > > months ago. > > > > I don't think a logging library is neither needed nor appropriate > > for FreeType. Werner, can you please summarize why you think this > > is a good

Logging library

2020-06-08 Thread Behdad Esfahbod
I want to raise same concerns that David did in a thread a few months ago. I don't think a logging library is neither needed nor appropriate for FreeType. Werner, can you please summarize why you think this is a good idea? -- behdad http://behdad.org/

Re: GSOC - Distance Fields

2020-06-04 Thread Behdad Esfahbod
had your chance to contribute Distance >> Fields before May and will have it after September. >> >> Best regards, >> Alexei >> >> >> >> >> On Thu, Jun 4, 2020 at 12:39 PM Behdad Esfahbod >> wrote: >> > >> >

Re: GSOC - Distance Fields

2020-06-04 Thread Behdad Esfahbod
will have it after September. > > Best regards, > Alexei > > > > > On Thu, Jun 4, 2020 at 12:39 PM Behdad Esfahbod wrote: > > > > Thanks Jim. > > > > A 2.14 representation when 1 unit = 1em is sufficient. If we are > talking pixels then 10.6 or be

Re: GSOC - Distance Fields

2020-06-04 Thread Behdad Esfahbod
SDFs, 1 unit in distance is one pixel. And Anuj, > I'm not sure 2.14 is enough precision in the integer part. It's been a > while, but I believe I got better results with at least 3 bits of integer. > > On Wed, Jun 3, 2020 at 6:33 PM Behdad Esfahbod wrote: > >> Jim, >> >

Re: GSOC - Distance Fields

2020-06-03 Thread Behdad Esfahbod
Hi Jim, others, Thanks for your input. I've been meaning to get into the discussion as well but didn't get to. I support your suggestions: generate from vector instead of bitmap, as well as 8-bit 3.5 fixed point or similar at least as an option. In your 3.5 fixed-point, does one unit reflect

Re: [Freetype-devel] Re: GSOC - Distance Fields

2020-06-03 Thread Behdad Esfahbod
Anuj, You cannot use just the orientation of the closest contour. That's what we did in GLyphy but is wrong for reasons you found out. You need to calculate actual winding number of the sampling point. On Mon, Jun 1, 2020 at 3:21 AM Anuj Verma wrote: > Hello Werner, > > > > *> As you like.

Re: GSOC - Distance Fields

2020-06-03 Thread Behdad Esfahbod
break the input curve on cusps if any. But even that has not been an issue: https://github.com/googlefonts/cu2qu/issues/6 Cheers, behdad On Wed, Jun 3, 2020 at 3:16 PM Behdad Esfahbod wrote: > Hi Jim, others, > > Thanks for your input. I've been meaning to get into the discussion

Re: [Freetype-devel] Re: GSOC - Distance Fields

2020-06-03 Thread Behdad Esfahbod
On Mon, Jun 1, 2020 at 3:10 PM Alexei Podtelezhnikov wrote: > On Mon, Jun 1, 2020 at 2:43 PM Werner LEMBERG wrote: > > >> However there is an issue with the program, the glyphs which > > >> contain intersecting contours have an issue. (example: > > >> https://imgur.com/MxJfAwY) > > > > > > The

Re: Build system considerations

2020-05-18 Thread Behdad Esfahbod
Let me think about the HarfBuzz co-dependency a bit... On Mon, May 18, 2020 at 12:26 PM Behdad Esfahbod wrote: > Hi David, > > Thanks for experimenting with this! > > I encourage you to explore removing the Module and Service abstraction > completely. We did that in Pango a c

Re: Build system considerations

2020-05-18 Thread Behdad Esfahbod
Hi David, Thanks for experimenting with this! I encourage you to explore removing the Module and Service abstraction completely. We did that in Pango a couple of years ago and never looked back... I'll reply to your original request this week. Threadsafety and lack of a functional separate

Re: Build system considerations

2020-04-30 Thread Behdad Esfahbod
Hi David, Thanks for bringing this up. I come from the GNOME camp. My understanding is that meson is replacing autotools longterm, sidestepping attempts like cmake, the same way that git replaced CVS, sidestepping mercurial, bazaar, etc. In the latest HarfBuzz release we added a meson build

Re: Blending non-color glyphs

2019-11-22 Thread Behdad Esfahbod
Hi Werner, On Thu, Nov 21, 2019 at 8:51 AM Werner LEMBERG wrote: > > Hello Behdad, > > > I like to compose multiple glyphs in a bitmap without using any > > graphics library. I found that FT_Bitmap_Blend() does exactly what > > I want except that if none of the glyphs are color, it still > >

Re: Two minor build fixes

2019-11-21 Thread Behdad Esfahbod
On Thu, Nov 21, 2019 at 3:15 PM Werner LEMBERG wrote: > > > I need these in my custom build setup. Looks correct to me. > > Will apply, thanks. > > However: The `aflatin2' stuff is never activated; I'm not sure whether > it still compiles at all. What are you doing with it? Right. I need to

Two minor build fixes

2019-11-21 Thread Behdad Esfahbod
I need these in my custom build setup. Looks correct to me. Thanks -- behdad http://behdad.org/ diff --git a/src/autofit/aflatin2.c b/src/autofit/aflatin2.c index c601ab8d9..dab86dde6 100644 --- a/src/autofit/aflatin2.c +++ b/src/autofit/aflatin2.c @@ -21,6 +21,7 @@ */ +#include

Blending non-color glyphs

2019-11-21 Thread Behdad Esfahbod
Hi, I like to compose multiple glyphs in a bitmap without using any graphics library. I found that FT_Bitmap_Blend() does exactly what I want except that if none of the glyphs are color, it still promotes the image to a color bitmap. Would be nice to have another version that would only upgrade

Re: [ft-devel] Glitchy rendering of overlapping outlines in variable fonts

2019-09-25 Thread Behdad Esfahbod
Yes. On Wed, Sep 25, 2019 at 1:38 PM Nikolaus Waxweiler wrote: > Hi list, > I was just looking at SourceSerifVariable-Roman.otf from > https://github.com/adobe-fonts/source-serif-pro/releases/tag/3.000R and > found this discrepancy between the variable instance of Black and the > static one

Re: [ft-devel] [freetype2] hooks-via-module-property d94f52b: Use `FT_Property_Set' to set the hooks. One less API function.

2019-08-21 Thread Behdad Esfahbod
On Tue, Aug 20, 2019 at 11:35 AM Werner LEMBERG wrote: > > > [...], after this commit, I am not abusing it to set pointer to > > code. I am abusing it to set a structure of four function pointers. > > > > Let me know if your concerns remain the same with this change. > > His concerns stay the

Re: [ft-devel] [freetype2] hooks-via-module-property d94f52b: Use `FT_Property_Set' to set the hooks. One less API function.

2019-08-19 Thread Behdad Esfahbod
On Fri, Jul 19, 2019 at 4:34 PM Moazin Khatri wrote: > Just want to express that this is very, *very*, /very/, VERY, bad. >> > > Thank you for pointing that out. However, ... > > The whole property API is a big anti-pattern that FreeType has adopted. >> Still, using it to set boolean, integer,

Re: [ft-devel] Fwd: Issue 977845 in chromium: pdf_font_fuzzer: Integer-overflow in compute_glyph_metrics

2019-08-13 Thread Behdad Esfahbod
I'm not sure what exactly points of discussion are, but in HarfBuzz we do purposefully ignore position overflows. We use a macro like this for that: #define HB_NO_SANITIZE_SIGNED_INTEGER_OVERFLOW __attribute__((no_sanitize("signed-integer-overflow"))) If you want to copy the macro, please copy

Re: [ft-devel] [freetype2] GSoC-2019-moazin 8887048: Performs basic to see if SVG data is valid or not.

2019-07-29 Thread Behdad Esfahbod
nvalid data is checked for and rejected, so decided to do > the same. > > On Tue, Jul 30, 2019 at 12:59 AM Behdad Esfahbod > wrote: > >> Why? >> >> On Mon, Jul 29, 2019 at 12:41 PM Moazin Khatti >> wrote: >> >>> branch: GSoC-2019-moazin &g

Re: [ft-devel] [freetype2] GSoC-2019-moazin 8887048: Performs basic to see if SVG data is valid or not.

2019-07-29 Thread Behdad Esfahbod
Why? On Mon, Jul 29, 2019 at 12:41 PM Moazin Khatti wrote: > branch: GSoC-2019-moazin > commit 8887048557db93857ffa6169cfe4c3190f9cb1a1 > Author: Moazin Khatti > Commit: Moazin Khatti > > Performs basic to see if SVG data is valid or not. > --- > src/sfnt/ttsvg.c | 38

Re: [ft-devel] GSoC: OT-SVG: Feature requirements from SVG rendering library

2019-07-25 Thread Behdad Esfahbod
Cairo has a "recording surface" which has _cairo_recording_surface_get_bounds(). On Thu, Jul 25, 2019 at 2:43 PM Alexei Podtelezhnikov wrote: > Hi Moazin, > > Can any of SVG libraries return a bounding box without actual > rendering? Do they have something for FT_RendererClass.get_glyph_cbox? >

Re: [ft-devel] Where is FT_Library reference for FT_MM_Var?

2019-07-25 Thread Behdad Esfahbod
You're not missing anything... Face->GlyphSlot->Library... On Thu, Jul 25, 2019, 4:47 AM Akira TAGOH wrote: > Hi, > > FT_MM_Var instance can be created without FT_Library instance in its > scope. but FT_Library is required to free it with FT_Done_MM_Var. How > can it be freed to avoid the

Re: [ft-devel] [freetype2] hooks-via-module-property d94f52b: Use `FT_Property_Set' to set the hooks. One less API function.

2019-07-19 Thread Behdad Esfahbod
Just want to express that this is very, *very*, /very/, VERY, bad. The whole property API is a big anti-pattern that FreeType has adopted. Still, using it to set boolean, integer, or string values is justifiable. Abusing it to set pointer to code, Just Unacceptable. b On Wed, Jul 17, 2019 at

Re: [ft-devel] GSoC: OT-SVG: Brief Update Week 6

2019-07-17 Thread Behdad Esfahbod
On Wed, Jul 17, 2019 at 8:37 AM Moazin Khatri wrote: > --with-svg=autoeither `yes' or `no', depending on what the >> system provides >> > > Werner, can you please elaborate what you mean by > "what the system provides". I understood the rest of > the options. >

Re: [ft-devel] GSoC: OT-SVG: Brief Update Week 6

2019-07-17 Thread Behdad Esfahbod
On Wed, Jul 17, 2019 at 6:00 AM Alexei Podtelezhnikov wrote: > > > Or, you can just prioritize the separate renderers. Do not waste > > > your work. > > > > While the concept of having different renderers sounds nice in theory, > > I think it is a hassle to implement, since it moves the burden

Re: [ft-devel] Accessing `ft_mem_*' from OT-SVG hooks

2019-07-07 Thread Behdad Esfahbod
I haven't read the entire thread carefully. However I want to point out that how the SVG library allocates and frees memory is its own business and should NOT be tied to FreeType memory routines. You still need to negotiate the bitmap allocation though. On Sat, Jul 6, 2019 at 5:55 AM Moazin

Re: [ft-devel] Accessing `ft_mem_*' from OT-SVG hooks

2019-07-05 Thread Behdad Esfahbod
Use cairo_image_surface_create_for_data(). On Fri, Jul 5, 2019 at 6:37 AM Moazin Khatri wrote: > Hi, > > I'm trying to fix all of the memory leaks in the work that I have > done so far and one very important memory leak is that of the whole > image buffer data. > > For example, in my `resvg'

Re: [ft-devel] GSoC: OT-SVG: `librsvg' based port functional now

2019-07-03 Thread Behdad Esfahbod
Hi Moazin, That looks great. You shouldn't be using global state though. The state should be held by FT_Library and passed to init/fini as well as the renderer functions. On Tue, Jul 2, 2019 at 10:03 PM Moazin Khatri wrote: > Hi Werner and Toshiya, > > While using resvg to render glyphs from

Re: [ft-devel] Modification in FT_Gzip_Uncompress

2019-06-10 Thread Behdad Esfahbod
Note that OT-SVG only allows gzip-wrapper compressed documents, not zlib-wrapped. On Sat, Jun 8, 2019 at 1:57 AM Moazin Khatri wrote: > Hi, > > In OpenType fonts, SVG documents can be either in plain text or gzip > encoded. > > While writing the code to read these documents I looked for a

Re: [ft-devel] Pixel Differences after 2ea511eed8 and 7a81b63abc2b3

2019-05-24 Thread Behdad Esfahbod
Alexei, I don't know about others on the list. But I find the linear algebra / bezier discussion very interesting and I'm happy to discuss those. The new algorithm is pretty simple, yes. BTW, I wonder if the 1/8th of pixel tolerance is what's causing this:

Re: [ft-devel] The criterion for comparing SVG Rendering libraries

2019-05-15 Thread Behdad Esfahbod
On Tue, May 14, 2019 at 11:42 PM Werner LEMBERG wrote: > > > Realistically, not many fonts combine multiple glyphs into the same > > SVG documents, for obvious reasons of workflow: fonts are built out > > of a collection of standalone SVGs much more often than hand-curated > > SVG documents

Re: [ft-devel] The criterion for comparing SVG Rendering libraries

2019-05-15 Thread Behdad Esfahbod
On Tue, May 14, 2019 at 11:24 PM Werner LEMBERG wrote: > > > If you read the OT-SVG table spec, multiple glyphs can refer to the > > same SVG document. Then for a glyph eg. 1234, client is expected to > > render the element with id "glyph1234" in the referenced SVG > > document. > > OK, thanks.

Re: [ft-devel] The criterion for comparing SVG Rendering libraries

2019-05-14 Thread Behdad Esfahbod
On Tue, May 14, 2019 at 9:42 AM Werner LEMBERG wrote: > > >> Could you tell me more about "all the current energye is going in > >> the wrong direction"? Do you think "spending much energy for the > >> discussion which is not so much important"? Or, do you think > >> "trying to implement

Re: [ft-devel] The criterion for comparing SVG Rendering libraries

2019-05-14 Thread Behdad Esfahbod
On Tue, May 14, 2019 at 9:17 AM suzuki toshiya wrote: > Dear Behdad, > > Alexei wrote: > > Whatever external SVG renderer you choose, please use FT_Renderer > facility to hook it up with FreeType instead of creating a set of SVG > specific functions: an SVG glyph should be tagged as

Re: [ft-devel] The criterion for comparing SVG Rendering libraries

2019-05-14 Thread Behdad Esfahbod
On Tue, May 14, 2019 at 8:37 AM Alexei Podtelezhnikov wrote: > > > 3. *How much work to do make it work with FreeType*: Does it need a >> >C API wrapper? >> >> Yes. > > > Whatever external SVG renderer you choose, please use FT_Renderer facility > to hook it up with FreeType instead of

Re: [ft-devel] [ft] Three GSoC projects for FreeType

2019-05-09 Thread Behdad Esfahbod
On Wed, May 8, 2019 at 10:19 PM Werner LEMBERG wrote: > > >> It's not completely off the table, but it seems to me that > >> `svgnative' is preferable. > > > > Given that we want a pluggable renderer, the whole discussion is > > moot. > > It's not moot at all IMHO. I want to have a default that

Re: [ft-devel] [ft] Three GSoC projects for FreeType

2019-05-07 Thread Behdad Esfahbod
On Tue, May 7, 2019 at 9:46 AM Werner LEMBERG wrote: > > > What happened to the resvg (Rust library) idea? > > It's not completely off the table, but it seems to me that `svgnative' > is preferable. > Given that we want a pluggable renderer, the whole discussion is moot. For pangocairo, we're

Re: [ft-devel] [ft] Three GSoC projects for FreeType

2019-05-07 Thread Behdad Esfahbod
What happened to the resvg (Rust library) idea? At any rate, I agree SVG renderrer should be pluggable by client and not fixed in FreeType. Also, note that the small SVG Native comes at a cost that it doesn't support much... On Tue, May 7, 2019 at 8:27 AM wrote: > On Tue, May 07, 2019 at

Re: [ft-devel] Savannah downloads broken?

2019-04-04 Thread Behdad Esfahbod
On Thu, Apr 4, 2019, 12:40 AM Werner LEMBERG wrote: > > Hello Behdad! > > > > When trying to download this: > > > > http://download.savannah.gnu.org/freetype/freetype-2.9.tar.bz2 > > > > which is linked from: > > > > http://download.savannah.gnu.org/releases/freetype/ > > Is it? It was

[ft-devel] Savannah downloads broken?

2019-04-03 Thread Behdad Esfahbod
When trying to download this: http://download.savannah.gnu.org/freetype/freetype-2.9.tar.bz2 which is linked from: http://download.savannah.gnu.org/releases/freetype/ I get a 404. Our HarfBuzz CI bots are hitting this. Any idea? -- behdad http://behdad.org/

Re: [ft-devel] what FT_Color

2019-03-03 Thread Behdad Esfahbod
Skia has been rendering color fonts to billions of devices for over five years now, based on existing FreeType. Patches existed for cairo for the same time and were finally integrated last year. This idea that something big in FreeType has happened re color recently sounds detached from reality

Re: [ft-devel] Potential Timing Side-channel in Freetype Library

2019-02-19 Thread Behdad Esfahbod
On Tue, Feb 19, 2019 at 2:27 AM Werner LEMBERG wrote: > > > We're a group of researchers from University of California > > Riverside. We recently discovered that the outline processing (font > > translation/decomposition) subroutine in the Freetype version 2.9.1 > > takes variable amount of time

Re: [ft-devel] Variable fonts: hhea/typo/win metrics interpreted differently for instances compared to static fonts?

2019-02-04 Thread Behdad Esfahbod
Fully agree. Thanks Nikolaus and Ben. On Mon, Feb 4, 2019, 3:06 PM Ben Wagner wrote: > So, to summarize, the new behavior is sTypo (if UseTypoMetrics), then hhea > (if not 0), then sTypo (if not 0), then usWin. This is now consistent > across all fonts; variable fonts do not have a different

Re: [ft-devel] Variable fonts: hhea/typo/win metrics interpreted differently for instances compared to static fonts?

2019-01-30 Thread Behdad Esfahbod
.png > https://i.postimg.cc/PJjQhWrT/Bildschirmfoto-vom-2019-01-31-00-09-56.png > > Text becomes compressed. > Am Do, 31. Jan, 2019 um 12:38 A. M. schrieb Behdad Esfahbod > : > > That's what line-gap is: gap between consecutive lines. There is no > > line before the first line, an

Re: [ft-devel] Variable fonts: hhea/typo/win metrics interpreted differently for instances compared to static fonts?

2019-01-30 Thread Behdad Esfahbod
That's what line-gap is: gap between consecutive lines. There is no line before the first line, and as such, no gap. On Wed, Jan 30, 2019 at 4:37 PM Nikolaus Waxweiler wrote: > Even more testing. > > ftview and Qt actually do the same GTK does: they don't add the line > gap to the top, so text

Re: [ft-devel] Logging library proposal

2019-01-22 Thread Behdad Esfahbod
On Tue, Jan 22, 2019 at 11:47 AM Werner LEMBERG wrote: > > Of course. Only if some preprocessor macros are defined at configure > time, this feature is available – I won't change that. In other > words, it will stay as a developer-only feature. Right. Which makes using en external library

Re: [ft-devel] Logging library proposal

2019-01-22 Thread Behdad Esfahbod
Werner, Please don't use an external library. Logging in FreeType is for developers only, and some parts maybe for font designers. Clients who just want to render text don't need the logging capabilities. Just keep it simple. On Mon, Jan 21, 2019 at 4:35 PM Yash Khasbage wrote: > Hi > I

Re: [ft-devel] Variable fonts: hhea/typo/win metrics interpreted differently for instances compared to static fonts?

2018-12-22 Thread Behdad Esfahbod
On Sat, Dec 22, 2018 at 11:23 AM Nikolaus Waxweiler wrote: > > > The thinking within the working group was that no one uses win > > metrics, so we didn't encode their variations. Indeed, the only time > > one uses them these days is if typo and hhea metrics are not set... > > > > But MVAR tags

Re: [ft-devel] Variable fonts: hhea/typo/win metrics interpreted differently for instances compared to static fonts?

2018-12-22 Thread Behdad Esfahbod
On Sat, Dec 22, 2018 at 8:43 AM Nikolaus Waxweiler wrote: > > There's also the question of whether MVAR tags should apply to > > whatever was used for ascent/descent. I think yes. And I'll > > implement that in HB. > > What would you do when > > 1. the typo metrics are modified by the MVAR

Re: [ft-devel] Variable fonts: hhea/typo/win metrics interpreted differently for instances compared to static fonts?

2018-12-20 Thread Behdad Esfahbod
On Thu, Dec 20, 2018 at 5:32 AM Werner LEMBERG wrote: > > > I just tested the static and variable fonts in macOS 10.14 TextEdit. > > For the static instances, it presumably takes the hhea metrics, for > > the VF, it always takes typo metrics. (It also adds the line gap at > > the bottom, making

Re: [ft-devel] Variable fonts: hhea/typo/win metrics interpreted differently for instances compared to static fonts?

2018-12-20 Thread Behdad Esfahbod
On Thu, Dec 20, 2018 at 6:02 AM Nikolaus Waxweiler wrote: > > This is certainly the most convenient solution for me since I have > > nothing to do on the FreeType side :-) > > (As an aside, GTK/Pango seem to make the same mistake as TextEdit then, > putting the line gap at the bottom instead of

Re: [ft-devel] color framework

2018-12-19 Thread Behdad Esfahbod
On Wed, Dec 19, 2018 at 9:08 AM Alexei Podtelezhnikov wrote: > On Wed, Dec 19, 2018 at 5:43 AM Alexei Podtelezhnikov > wrote: > > > Alexei, I think we miscommunicate. > > > > I struggle to get your attention to FT_Glyph_To_Bitmap. > > I just discovered that, while ignoring the FT_Glyph

Re: [ft-devel] color framework

2018-12-19 Thread Behdad Esfahbod
On Tue, Dec 18, 2018 at 5:35 AM Werner LEMBERG wrote: > > >> FreeType is about to make a major leap into color rendering. > > > > Is it? Color rendering was the news before variable-fonts were > > news. So 2013. The world has moved on. > > You completely misunderstood. Alexei talks about

Re: [ft-devel] color framework

2018-12-19 Thread Behdad Esfahbod
On Wed, Dec 19, 2018 at 5:43 AM Alexei Podtelezhnikov wrote: > FT_Render_Glyph used to be democratic. The renderers were chosen based > on the match between the glyph format and the rendering mode. The only > way to keep it this way is either FT_RENDER_MODE_BGRA or > FT_GLYPH_FORMAT_LAYERED.

Re: [ft-devel] Variable fonts: hhea/typo/win metrics interpreted differently for instances compared to static fonts?

2018-12-18 Thread Behdad Esfahbod
On Tue, Dec 18, 2018 at 11:43 AM Nikolaus Waxweiler wrote: > Thanks Alexei for chiming in at > https://github.com/googlei18n/fontmake/issues/492#issuecomment-448249543. > > > The following seems to be different: hhea does not seem to be used in > VF. Compare and decide which one is correct. > >

Re: [ft-devel] color framework

2018-12-16 Thread Behdad Esfahbod
On Sat, Dec 15, 2018 at 11:10 PM Alexei Podtelezhnikov wrote: > > FreeType is about to make a major leap into color rendering. Is it? Color rendering was the news before variable-fonts were news. So 2013. The world has moved on. > It is > possible to make it right while keeping rendering

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