Received: (at 73563) by debbugs.gnu.org; 17 May 2025 11:24:03 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat May 17 07:24:03 2025 Received: from localhost ([127.0.0.1]:46676 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1uGFe6-0002lZ-C5 for submit <at> debbugs.gnu.org; Sat, 17 May 2025 07:24:03 -0400 Received: from dane.soverin.net ([185.233.34.38]:49115) by debbugs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.84_2) (envelope-from <alan@HIDDEN>) id 1uGFe4-0002l4-E3 for 73563 <at> debbugs.gnu.org; Sat, 17 May 2025 07:24:01 -0400 Received: from smtp.soverin.net (unknown [10.10.4.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by dane.soverin.net (Postfix) with ESMTPS id 4b01mV2cfvz186L; Sat, 17 May 2025 11:23:54 +0000 (UTC) Received: from smtp.soverin.net (smtp.soverin.net [10.10.4.99]) by soverin.net (Postfix) with ESMTPSA id 4b01mT4HVmz7X; Sat, 17 May 2025 11:23:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=idiocy.org; s=soverin; t=1747481034; bh=c8EU3rK7D0uWiVMxFhSEPZTPDW9k5yxrzHA680ly2+0=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Txzb5Y7lhuNNIYmXHWtmXEo/Jhqha/OINDKDmNhe9SjIMZd9ENWiIB8M65ASuePPb 3P60qNqV65uMaOXLJSeqic55lNyvmZ/Sx2e75P0qbyrrEWveRlYruaOxjnBx2rBNdM rhYMOF3nfh07EcaQjG7T+T91e1lJowWCiO81jiuvREyyqkqkrmZ42NN44sD/NYTFBK 2sgEx+JrFkG4udzXSG0oXg8AA1+qOAv/UaSfNu+NGpC0sljh0LNtKIkIFtj/dNke/u P4aOV92MOiSBSW2CLEjDP6oY0ViecXteUnj+f6zE65Yy6RT1jjtlZLixXHyQeyRBAT ZlTdF5lAMQBzA== X-CM-Envelope: MS4xfJsOuxhDmEk4adHEAz4ubT+bEd/3mke6MdcF4AsnFO8qgM584XfvxSZmR8WIPHxfFnGCbJL42dHjpRV3/TLvWQXxFCkr+8vZErpjQKH2QbgTtObQMQCX R2psp0jqTrTJQBiZ/3rQP6MfwVkG5EGGuhna6jRX8snX9/nKLflJuC7TzuYRrs2S8RZNxQnfz5I2P/PSZyd475kW1T7ij6sSa+R9G5zxgo1yPpxcd4z4X/YO aBb5zDGwbZFhpQG4BaPN+SHMWqzjkJ3TldhCXZck9KnIzuMNX0WXyNGApqqp9Q53W0tnVKp1KoA6rb0nU8Q2WA== X-CM-Analysis: v=2.4 cv=d/oPyQjE c=1 sm=1 tr=0 ts=682871ca a=UbsBXRcqaZ6D9kgPt/Dvnw==:617 a=xqWC_Br6kY4A:10 a=kj9zAlcOel0A:10 a=dt9VzEwgFbYA:10 a=NEAV23lmAAAA:8 a=mDV3o1hIAAAA:8 a=fvF8FFjmQgGntISpTSEA:9 a=CjuIK1q_8ugA:10 a=9MSFP0l5Dcwi9NrB_JPx:22 Received: from localhost (faroe.holly.idiocy.org [local]) by faroe.holly.idiocy.org (OpenSMTPD) with ESMTPA id f253ee2a; Sat, 17 May 2025 11:23:53 +0000 (UTC) Date: Sat, 17 May 2025 12:23:53 +0100 From: Alan Third <alan@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#73563: [Ben Simms] Performance bottleneck in ns_draw_fringe_bitmap Message-ID: <aChxyarDxZUdur11@HIDDEN> Mail-Followup-To: Alan Third <alan@HIDDEN>, Eli Zaretskii <eliz@HIDDEN>, Jordan Ellis Coppard <jc+o.emacs@HIDDEN>, Gerd =?iso-8859-1?Q?M=F6llmann?= <gerd.moellmann@HIDDEN>, 73563 <at> debbugs.gnu.org, ben@HIDDEN References: <CADwFkmn9fhiU7XfXu5Ku+ouuxH=J+cx73n-APP7Gkq4FdywD0g@HIDDEN> <d3fd9db3-d93b-4f80-b216-3818383212d0@HIDDEN> <865xhzwptp.fsf@HIDDEN> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <865xhzwptp.fsf@HIDDEN> X-Spampanel-Class: ham X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 73563 Cc: Gerd =?iso-8859-1?Q?M=F6llmann?= <gerd.moellmann@HIDDEN>, ben@HIDDEN, 73563 <at> debbugs.gnu.org, Jordan Ellis Coppard <jc+o.emacs@HIDDEN> X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) On Sat, May 17, 2025 at 12:26:26PM +0300, Eli Zaretskii wrote: > > Cc: Ben Simms <ben@HIDDEN> > > Date: Tue, 13 May 2025 20:37:55 +0900 > > From: Jordan Ellis Coppard via "Bug reports for GNU Emacs, > > the Swiss army knife of text editors" <bug-gnu-emacs@HIDDEN> > > > > Howdy, > > > > > > I've been using the following patch (bottom of this email) until my most > > recent rebuild of Emacs from master. Since the recent commit fixing > > stipple drawing the patch can be reduced to just: > > https://github.com/emacs-mirror/emacs/commit/7f2efe6503fdce2a4e552c14802644a05b581bc7 > > (link to a diff authored by Ben Simms). > > > > I've now noticed again extreme slowdown when fringe bitmaps are used. It > > appears to be proportional to the number of bits set in the bitmap. An > > 'empty' bitmap (all zeroes) doesn't yield any noticeable slowdown, a > > bitmap with 1 bit set yields a little, with 2 its noticeable and with > > all 8 bits set Emacs takes up to 1 second to respond to any input at all. > > > > This has been the case since at least August of last year. I can get a > > minimal reproduction but it has happened on completely different > > configurations with the only common denominator being the NS build (on > > ARM-based macOS), and the use of fringe bitmaps. > > > > Below is trace with update_frame as the root context. Captured with > > Instruments.app (which uses dtrace and more under the hood IIRC). > > > > ns_draw_fringe_bitmap takes up 94% of the time for the short > > reproduction this trace records. The deepest the trace goes is to > > CG::Path::recalculate_bounding_box() which eats 80% of time. So instead > > of a cached value the bounding box is being recalculated every time > > which appears very expensive, but beyond that I have close to zero > > experience with macOS' graphics stack. > > > > I've just recompiled Emacs against the same commit of my recent master > > build (648453c04d9b91d96452b930c0c948b0b39b5dc0) except now with the > > patch applied (since the stipple changes are merged it's just the > > smallest subset: > > https://github.com/emacs-mirror/emacs/commit/7f2efe6503fdce2a4e552c14802644a05b581bc7) > > and once again fringe performance is back to being buttery smooth. > > Alan and Gerd, any comments or suggestions? I've not looked at it closely, but I will point out that AFAIK GNUStep does not support Core Graphics, so any function or struct starting with "CG" needs an alternative method in place. -- Alan Third
bug-gnu-emacs@HIDDEN:bug#73563; Package emacs.
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[2003:e0:b707:4700:f5e9:568d:b45a:cf37]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a35ca6254bsm5770810f8f.52.2025.05.17.02.45.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 17 May 2025 02:45:34 -0700 (PDT) From: =?utf-8?Q?Gerd_M=C3=B6llmann?= <gerd.moellmann@HIDDEN> To: Eli Zaretskii <eliz@HIDDEN> Subject: Re: bug#73563: [Ben Simms] Performance bottleneck in ns_draw_fringe_bitmap In-Reply-To: <865xhzwptp.fsf@HIDDEN> References: <CADwFkmn9fhiU7XfXu5Ku+ouuxH=J+cx73n-APP7Gkq4FdywD0g@HIDDEN> <d3fd9db3-d93b-4f80-b216-3818383212d0@HIDDEN> <865xhzwptp.fsf@HIDDEN> Date: Sat, 17 May 2025 11:45:33 +0200 Message-ID: <m2tt5jfu4i.fsf@HIDDEN> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 73563 Cc: ben@HIDDEN, Alan Third <alan@HIDDEN>, 73563 <at> debbugs.gnu.org, Jordan Ellis Coppard <jc+o.emacs@HIDDEN> X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Eli Zaretskii <eliz@HIDDEN> writes: > Alan and Gerd, any comments or suggestions? That goes beyond my macOS graphics knowledge I'm afraid.
bug-gnu-emacs@HIDDEN:bug#73563; Package emacs.
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Date: Sat, 17 May 2025 12:26:26 +0300
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From: Eli Zaretskii <eliz@HIDDEN>
To: Jordan Ellis Coppard <jc+o.emacs@HIDDEN>,
Alan Third <alan@HIDDEN>, =?utf-8?Q?Gerd_M=C3=B6llmann?=
<gerd.moellmann@HIDDEN>
In-Reply-To: <d3fd9db3-d93b-4f80-b216-3818383212d0@HIDDEN>
(bug-gnu-emacs@HIDDEN)
Subject: Re: bug#73563: [Ben Simms] Performance bottleneck in
ns_draw_fringe_bitmap
References: <CADwFkmn9fhiU7XfXu5Ku+ouuxH=J+cx73n-APP7Gkq4FdywD0g@HIDDEN>
<d3fd9db3-d93b-4f80-b216-3818383212d0@HIDDEN>
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> Cc: Ben Simms <ben@HIDDEN>
> Date: Tue, 13 May 2025 20:37:55 +0900
> From: Jordan Ellis Coppard via "Bug reports for GNU Emacs,
> the Swiss army knife of text editors" <bug-gnu-emacs@HIDDEN>
>
> Howdy,
>
>
> I've been using the following patch (bottom of this email) until my most
> recent rebuild of Emacs from master. Since the recent commit fixing
> stipple drawing the patch can be reduced to just:
> https://github.com/emacs-mirror/emacs/commit/7f2efe6503fdce2a4e552c14802644a05b581bc7
> (link to a diff authored by Ben Simms).
>
> I've now noticed again extreme slowdown when fringe bitmaps are used. It
> appears to be proportional to the number of bits set in the bitmap. An
> 'empty' bitmap (all zeroes) doesn't yield any noticeable slowdown, a
> bitmap with 1 bit set yields a little, with 2 its noticeable and with
> all 8 bits set Emacs takes up to 1 second to respond to any input at all.
>
> This has been the case since at least August of last year. I can get a
> minimal reproduction but it has happened on completely different
> configurations with the only common denominator being the NS build (on
> ARM-based macOS), and the use of fringe bitmaps.
>
> Below is trace with update_frame as the root context. Captured with
> Instruments.app (which uses dtrace and more under the hood IIRC).
>
> ns_draw_fringe_bitmap takes up 94% of the time for the short
> reproduction this trace records. The deepest the trace goes is to
> CG::Path::recalculate_bounding_box() which eats 80% of time. So instead
> of a cached value the bounding box is being recalculated every time
> which appears very expensive, but beyond that I have close to zero
> experience with macOS' graphics stack.
>
> I've just recompiled Emacs against the same commit of my recent master
> build (648453c04d9b91d96452b930c0c948b0b39b5dc0) except now with the
> patch applied (since the stipple changes are merged it's just the
> smallest subset:
> https://github.com/emacs-mirror/emacs/commit/7f2efe6503fdce2a4e552c14802644a05b581bc7)
> and once again fringe performance is back to being buttery smooth.
Alan and Gerd, any comments or suggestions?
> (trace also here in-case formatting gets borked:
> trace:
>
> 3.07 s 100.0% 0 s update_frame
> 3.06 s 100.0% 0 s update_window_tree
> 3.06 s 100.0% 1.00 ms update_window
> 2.89 s 94.2% 0 s gui_update_window_end
> 2.88 s 94.1% 0 s draw_window_fringes
> 2.88 s 93.9% 0 s draw_fringe_bitmap
> 2.88 s 93.9% 0 s draw_fringe_bitmap_1
> 2.88 s 93.9% 0 s ns_draw_fringe_bitmap
> 2.72 s 88.7% 0 s -[NSBezierPath copyWithZone:]
> 2.72 s 88.7% 0 s -[NSBezierPath _appendToPath:]
> 2.72 s 88.7% 0 s -[NSBezierPath
> _enumeratePathElementsUsingBlock:]
> 2.72 s 88.7% 0 s CGPathApplyWithBlock2
> 2.72 s 88.7% 5.00 ms CG::Path::apply(void
> (CGPathElementType, CGPoint const*, bool*) block_pointer) const
> 2.71 s 88.5% 30.00 ms
> __CGPathApplyWithBlock2_block_invoke
> 2.68 s 87.4% 11.00 ms __49-[NSBezierPath
> _enumeratePathElementsUsingBlock:]_block_invoke
> 2.48 s 80.8% 1.00 ms
> -[NSBezierPath(NSBezierPathDevicePrimitives) _deviceMoveToPoint:]
> 2.47 s 80.6% 2.00 ms CGPathMoveToPoint
> 2.46 s 80.3% 2.46 s
> CG::Path::recalculate_bounding_box()
> 5.00 ms 0.2% 4.00 ms
> CG::Path::move_to_point(CGPoint const&, CGAffineTransform const*)
> 1.00 ms 0.0% 1.00 ms
> CG::Path::convert_to_huge()
> 2.00 ms 0.1% 2.00 ms (anonymous
> namespace)::transform_is_valid(CGAffineTransform const*)
> 1.00 ms 0.0% 1.00 ms
> CG::Path::convert_to_huge()
> 1.00 ms 0.0% 1.00 ms
> CGFloatValidateWithLog
> 1.00 ms 0.0% 1.00 ms
> DYLD-STUB$$CGPathMoveToPoint
> 1.00 ms 0.0% 1.00 ms -[NSBezierPath
> _cgPath]
> 1.00 ms 0.0% 1.00 ms objc_msgSend
> 1.00 ms 0.0% 1.00 ms (anonymous
> namespace)::transform_is_valid(CGAffineTransform const*)
> 67.00 ms 2.2% 7.00 ms
> -[NSBezierPath(NSBezierPathDevicePrimitives) _deviceLineToPoint:]
> 40.00 ms 1.3% 5.00 ms
> -[NSBezierPath(NSBezierPathDevicePrimitives) _deviceClosePath]
> 39.00 ms 1.3% 2.00 ms -[NSBezierPath
> lineToPoint:]
> 14.00 ms 0.5% 14.00 ms objc_msgSend
> 6.00 ms 0.2% 6.00 ms -[NSBezierPath _cgPath]
> 5.00 ms 0.2% 5.00 ms CGPathAddLineToPoint
> 4.00 ms 0.1% 4.00 ms __30-[NSBezierPath
> _appendToPath:]_block_invoke
> 4.00 ms 0.1% 4.00 ms
> objc_msgSend$lineToPoint:
> 2.00 ms 0.1% 2.00 ms CGPathIsEmpty
> 2.00 ms 0.1% 2.00 ms
> objc_msgSend$moveToPoint:
> 2.00 ms 0.1% 2.00 ms
> CG::Path::close_subpath()
> 1.00 ms 0.0% 1.00 ms
> objc_msgSend$_deviceLineToPoint:
> 1.00 ms 0.0% 1.00 ms CGPathGetCurrentPoint
> 1.00 ms 0.0% 1.00 ms -[NSBezierPath
> moveToPoint:]
> 1.00 ms 0.0% 1.00 ms
> objc_msgSend$_deviceClosePath
> 1.00 ms 0.0% 1.00 ms objc_msgSend$closePath
> 1.00 ms 0.0% 1.00 ms
> objc_msgSend$_deviceMoveToPoint:
> 3.00 ms 0.1% 3.00 ms -[NSBezierPath
> lineToPoint:]
> 1.00 ms 0.0% 1.00 ms
> -[NSBezierPath(NSBezierPathDevicePrimitives) _deviceLineToPoint:]
> 2.00 ms 0.1% 2.00 ms __49-[NSBezierPath
> _enumeratePathElementsUsingBlock:]_block_invoke
> 1.00 ms 0.0% 1.00 ms objc_msgSend$setFlatness:
> 104.00 ms 3.4% 0 s -[NSBezierPath fill]
> 42.00 ms 1.4% 0 s -[NSBezierPath
> transformUsingAffineTransform:]
> 7.00 ms 0.2% 0 s NSRectFill
> 2.00 ms 0.1% 0 s NSColorSetWithFillAndStroke
> 1.00 ms 0.0% 1.00 ms CGContextClipToRect
> 1.00 ms 0.0% 0 s -[NSBezierPath dealloc]
> 1.00 ms 0.0% 1.00 ms CGGStateSetCompositeOperation
> 1.00 ms 0.0% 1.00 ms lookup_named_face
> 5.00 ms 0.2% 4.00 ms set_buffer_internal_2
> 1.00 ms 0.0% 0 s unblock_input
> 1.00 ms 0.0% 0 s ns_draw_window_cursor
> 121.00 ms 3.9% 0 s ns_scroll_run
> 51.00 ms 1.7% 1.00 ms update_window_line
> 4.00 ms 0.1% 4.00 ms row_equal_p
> 1.00 ms 0.0% 1.00 ms xwidget_end_redisplay
> 1.00 ms 0.0% 0 s ns_update_end
>
>
>
> Patch:
>
> --- src/nsimage.m.orig
> +++ src/nsimage.m
> @@ -28,6 +28,7 @@ Updated by Christian Limpach (chris@HIDDEN)
> /* This should be the first include, as it may set up #defines affecting
> interpretation of even the system includes. */
> #include <config.h>
> +#include <CoreGraphics/CoreGraphics.h>
>
> #include "lisp.h"
> #include "dispextern.h"
> @@ -510,10 +511,20 @@ - (void) setAlphaAtX: (int) x Y: (int) y to:
> (unsigned char) a
> }
>
> /* Returns a pattern color, which is cached here. */
> -- (NSColor *)stippleMask
> +- (CGImageRef)stippleMask
> {
> - if (stippleMask == nil)
> - stippleMask = [[NSColor colorWithPatternImage: self] retain];
> + if (stippleMask == nil) {
> + CGDataProviderRef provider = CGDataProviderCreateWithData (NULL,
> [bmRep bitmapData],
> + [self
> sizeInBytes], NULL);
> + id mask = (id)CGImageMaskCreate(
> + [self size].width,
> + [self size].height,
> + 8, 8, [self size].width,
> + provider, NULL, 0);
> +
> + CGDataProviderRelease(provider);
> + stippleMask = (CGImageRef)[mask retain];
> + }
> return stippleMask;
> }
>
> --- src/nsterm.h.orig
> +++ src/nsterm.h
> @@ -670,7 +670,7 @@ enum ns_return_frame_mode
> {
> NSBitmapImageRep *bmRep; /* used for accessing pixel data */
> unsigned char *pixmapData[5]; /* shortcut to access pixel data */
> - NSColor *stippleMask;
> + CGImageRef stippleMask;
> @public
> NSAffineTransform *transform;
> BOOL smoothing;
> @@ -687,8 +687,8 @@ enum ns_return_frame_mode
> green: (unsigned char)g blue: (unsigned char)b
> alpha:(unsigned char)a;
> - (void)setAlphaAtX: (int)x Y: (int)y to: (unsigned char)a;
> -- (NSColor *)stippleMask;
> +- (CGImageRef)stippleMask;
> - (Lisp_Object)getMetadata;
> - (BOOL)setFrame: (unsigned int) index;
> - (void)setTransform: (double[3][3]) m;
>
> --- src/nsterm.m.orig
> +++ src/nsterm.m
> @@ -2903,22 +2903,24 @@ Hide the window (X11 semantics)
> static void
> ns_define_fringe_bitmap (int which, unsigned short *bits, int h, int w)
> {
> - NSBezierPath *p = [NSBezierPath bezierPath];
> -
> if (!fringe_bmp)
> fringe_bmp = [[NSMutableDictionary alloc] initWithCapacity:25];
>
> - [p moveToPoint:NSMakePoint (0, 0)];
>
> - for (int y = 0 ; y < h ; y++)
> - for (int x = 0 ; x < w ; x++)
> - {
> - bool bit = bits[y] & (1 << (w - x - 1));
> - if (bit)
> - [p appendBezierPathWithRect:NSMakeRect (x, y, 1, 1)];
> - }
> + for (int i = 0; i < h; i++)
> + bits[i] = ~bits[i];
> +
> + CGDataProviderRef provider = CGDataProviderCreateWithData (NULL, bits,
> + sizeof (unsigned short) * h, NULL);
> + if (provider) {
> + id p = (id)CGImageMaskCreate (w, h, 1, 1,
> + sizeof (unsigned short),
> + provider, NULL, 0);
> + CGDataProviderRelease (provider);
> +
> + [fringe_bmp setObject:p forKey:[NSNumber numberWithInt:which]];
> + }
>
> - [fringe_bmp setObject:p forKey:[NSNumber numberWithInt:which]];
> }
>
>
> @@ -2981,26 +2983,29 @@ Hide the window (X11 semantics)
> NSRectFill (clearRect);
> }
>
> - NSBezierPath *bmp = [fringe_bmp objectForKey:[NSNumber
> numberWithInt:p->which]];
> + CGImageRef bmp = (CGImageRef)[fringe_bmp objectForKey:[NSNumber
> numberWithInt:p->which]];
>
> if (bmp == nil
> && p->which < max_used_fringe_bitmap)
> {
> gui_define_fringe_bitmap (f, p->which);
> - bmp = [fringe_bmp objectForKey: [NSNumber numberWithInt: p->which]];
> + bmp = (CGImageRef)[fringe_bmp objectForKey: [NSNumber
> numberWithInt: p->which]];
> }
>
> if (bmp)
> {
> - NSAffineTransform *transform = [NSAffineTransform transform];
> - NSColor *bm_color;
> + CGRect bounds = CGRectMake (p->x, p->y - p->dh,
> + CGImageGetWidth (bmp), CGImageGetHeight (bmp));
> +
> + NSGraphicsContext *ctx = [NSGraphicsContext currentContext];
> + [ctx saveGraphicsState];
> + CGContextRef context = [ctx CGContext];
>
> - /* Because the image is defined at (0, 0) we need to take a copy
> - and then transform that copy to the new origin. */
> - bmp = [bmp copy];
> - [transform translateXBy:p->x yBy:p->y - p->dh];
> - [bmp transformUsingAffineTransform:transform];
> + CGContextTranslateCTM (context,
> + CGRectGetMinX (bounds), CGRectGetMaxY (bounds));
> + CGContextScaleCTM (context, 1, -1);
>
> + NSColor *bm_color;
> if (!p->cursor_p)
> bm_color = [NSColor colorWithUnsignedLong:face->foreground];
> else if (p->overlay_p)
> @@ -3009,9 +3014,10 @@ Hide the window (X11 semantics)
> bm_color = f->output_data.ns->cursor_color;
>
> [bm_color set];
> - [bmp fill];
> + bounds.origin = CGPointZero;
> + CGContextDrawImage (context, bounds, bmp);
>
> - [bmp release];
> + [[NSGraphicsContext currentContext] restoreGraphicsState];
> }
> ns_unfocus (f);
> }
> @@ -3273,11 +3279,10 @@ Note that CURSOR_WIDTH is meaningful only for
> (h)bar cursors.
> ns_draw_underwave (struct glyph_string *s, EmacsCGFloat width,
> EmacsCGFloat x)
> {
> int wave_height = 3, wave_length = 2;
> - int y, dx, dy, odd, xmax;
> - NSPoint a, b;
> + int y, dx, dy, xmax;
> NSRect waveClip;
>
> - dx = wave_length;
> + dx = wave_length * 2;
> dy = wave_height - 1;
> y = s->ybase - wave_height + 3;
> xmax = x + width;
> @@ -3287,25 +3292,24 @@ Note that CURSOR_WIDTH is meaningful only for
> (h)bar cursors.
> [[NSGraphicsContext currentContext] saveGraphicsState];
> NSRectClip (waveClip);
>
> - /* Draw the waves */
> - a.x = x - ((int)(x) % dx) + (EmacsCGFloat) 0.5;
> - b.x = a.x + dx;
> - odd = (int)(a.x/dx) % 2;
> - a.y = b.y = y + 0.5;
> + float ax = x - ((int)(x) % dx);
> + float ay = y + wave_height / 2.0;
>
> - if (odd)
> - a.y += dy;
> - else
> - b.y += dy;
> + NSBezierPath *path = [[NSBezierPath alloc] init];
> + [path moveToPoint: (NSPoint){ ax, ay }];
> +
> + NSPoint stepOne = { dx, 0 };
> + NSPoint controlOne = { 0.5 * dx, dy };
> + NSPoint controlTwo = { 0.5 * dx, -dy };
>
> - while (a.x <= xmax)
> + while (ax <= xmax)
> {
> - [NSBezierPath strokeLineFromPoint:a toPoint:b];
> - a.x = b.x, a.y = b.y;
> - b.x += dx, b.y = y + 0.5 + odd*dy;
> - odd = !odd;
> + [path relativeCurveToPoint:stepOne controlPoint1:controlOne
> controlPoint2:controlTwo];
> + ax += dx;
> }
>
> + [path stroke];
> +
> /* Restore previous clipping rectangle(s) */
> [[NSGraphicsContext currentContext] restoreGraphicsState];
> }
> @@ -3825,10 +3829,35 @@ Function modeled after x_draw_glyph_string_box ().
> int box_line_width = max (s->face->box_horizontal_line_width, 0);
>
> if (s->stippled_p)
> - {
> - struct ns_display_info *dpyinfo = FRAME_DISPLAY_INFO (s->f);
> - [[dpyinfo->bitmaps[face->stipple-1].img stippleMask] set];
> - goto fill;
> + {
> + [[NSColor colorWithUnsignedLong:face->background] set];
> + r = NSMakeRect (s->x, s->y + box_line_width,
> + s->background_width,
> + s->height - 2 * box_line_width);
> + NSRectFill (r);
> + s->background_filled_p = 1;
> +
> + struct ns_display_info *dpyinfo = FRAME_DISPLAY_INFO (s->f);
> + CGImageRef mask =
> + [dpyinfo->bitmaps[face->stipple - 1].img stippleMask];
> +
> + CGRect bounds = CGRectMake (s->x, s->y + box_line_width,
> + s->background_width,
> + s->height - 2 * box_line_width);
> + NSGraphicsContext *ctx = [NSGraphicsContext currentContext];
> + [ctx saveGraphicsState];
> + CGContextRef context = [ctx CGContext];
> +
> + CGContextClipToRect (context, bounds);
> +
> + CGContextScaleCTM (context, 1, -1);
> + [[NSColor colorWithUnsignedLong:face->foreground] set];
> +
> + CGRect imageSize = CGRectMake (0, 0, CGImageGetWidth (mask),
> + CGImageGetHeight (mask));
> +
> + CGContextDrawTiledImage (context, imageSize, mask);
> + [[NSGraphicsContext currentContext] restoreGraphicsState];
> }
> else if (FONT_HEIGHT (s->font) < s->height - 2 * box_line_width
> /* When xdisp.c ignores FONT_HEIGHT, we cannot trust font
> @@ -3851,7 +3880,6 @@ Function modeled after x_draw_glyph_string_box ().
> else
> [FRAME_CURSOR_COLOR (s->f) set];
>
> - fill:
> r = NSMakeRect (s->x, s->y + box_line_width,
> s->background_width,
> s->height - 2 * box_line_width);
> @@ -4175,12 +4203,42 @@ Function modeled after x_draw_glyph_string_box ().
> dpyinfo = FRAME_DISPLAY_INFO (s->f);
> if (s->hl == DRAW_CURSOR)
> [FRAME_CURSOR_COLOR (s->f) set];
> - else if (s->stippled_p)
> - [[dpyinfo->bitmaps[s->face->stipple - 1].img stippleMask] set];
> - else
> + else if (s->stippled_p) {
> + [[NSColor colorWithUnsignedLong:s->face->background]
> + set];
> + NSRectFill (
> + NSMakeRect (x, s->y, background_width, s->height));
> +
> + CGImageRef mask =
> + [dpyinfo->bitmaps[s->face->stipple - 1]
> + .img stippleMask];
> +
> + CGRect bounds
> + = CGRectMake (s->x, s->y, s->background_width,
> + s->height);
> +
> + NSGraphicsContext *ctx =
> + [NSGraphicsContext currentContext];
> + [ctx saveGraphicsState];
> + CGContextRef context = [ctx CGContext];
> + CGContextClipToRect(context, bounds);
> + CGContextScaleCTM (context, 1, -1);
> + [[NSColor colorWithUnsignedLong:s->face->foreground]
> + set];
> +
> + CGRect imageSize
> + = CGRectMake (0, 0, CGImageGetWidth (mask),
> + CGImageGetHeight (mask));
> +
> + CGContextDrawTiledImage (context, imageSize, mask);
> +
> + [[NSGraphicsContext currentContext]
> + restoreGraphicsState];
> + }
> + else {
> [[NSColor colorWithUnsignedLong: s->face->background] set];
> -
> - NSRectFill (NSMakeRect (x, s->y, background_width, s->height));
> + NSRectFill (NSMakeRect (x, s->y, background_width, s->height));
> + }
> }
> }
>
>
>
>
>
bug-gnu-emacs@HIDDEN:bug#73563; Package emacs.
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Subject: bug#73563: [Ben Simms] Performance bottleneck in ns_draw_fringe_bitmap
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Howdy,
I've been using the following patch (bottom of this email) until my most
recent rebuild of Emacs from master. Since the recent commit fixing
stipple drawing the patch can be reduced to just:
https://github.com/emacs-mirror/emacs/commit/7f2efe6503fdce2a4e552c14802644a05b581bc7
(link to a diff authored by Ben Simms).
I've now noticed again extreme slowdown when fringe bitmaps are used. It
appears to be proportional to the number of bits set in the bitmap. An
'empty' bitmap (all zeroes) doesn't yield any noticeable slowdown, a
bitmap with 1 bit set yields a little, with 2 its noticeable and with
all 8 bits set Emacs takes up to 1 second to respond to any input at all.
This has been the case since at least August of last year. I can get a
minimal reproduction but it has happened on completely different
configurations with the only common denominator being the NS build (on
ARM-based macOS), and the use of fringe bitmaps.
Below is trace with update_frame as the root context. Captured with
Instruments.app (which uses dtrace and more under the hood IIRC).
ns_draw_fringe_bitmap takes up 94% of the time for the short
reproduction this trace records. The deepest the trace goes is to
CG::Path::recalculate_bounding_box() which eats 80% of time. So instead
of a cached value the bounding box is being recalculated every time
which appears very expensive, but beyond that I have close to zero
experience with macOS' graphics stack.
I've just recompiled Emacs against the same commit of my recent master
build (648453c04d9b91d96452b930c0c948b0b39b5dc0) except now with the
patch applied (since the stipple changes are merged it's just the
smallest subset:
https://github.com/emacs-mirror/emacs/commit/7f2efe6503fdce2a4e552c14802644a05b581bc7)
and once again fringe performance is back to being buttery smooth.
(trace also here in-case formatting gets borked:
trace:
3.07 s 100.0% 0 s update_frame
3.06 s 100.0% 0 s update_window_tree
3.06 s 100.0% 1.00 ms update_window
2.89 s 94.2% 0 s gui_update_window_end
2.88 s 94.1% 0 s draw_window_fringes
2.88 s 93.9% 0 s draw_fringe_bitmap
2.88 s 93.9% 0 s draw_fringe_bitmap_1
2.88 s 93.9% 0 s ns_draw_fringe_bitmap
2.72 s 88.7% 0 s -[NSBezierPath copyWithZone:]
2.72 s 88.7% 0 s -[NSBezierPath _appendToPath:]
2.72 s 88.7% 0 s -[NSBezierPath
_enumeratePathElementsUsingBlock:]
2.72 s 88.7% 0 s CGPathApplyWithBlock2
2.72 s 88.7% 5.00 ms CG::Path::apply(void
(CGPathElementType, CGPoint const*, bool*) block_pointer) const
2.71 s 88.5% 30.00 ms
__CGPathApplyWithBlock2_block_invoke
2.68 s 87.4% 11.00 ms __49-[NSBezierPath
_enumeratePathElementsUsingBlock:]_block_invoke
2.48 s 80.8% 1.00 ms
-[NSBezierPath(NSBezierPathDevicePrimitives) _deviceMoveToPoint:]
2.47 s 80.6% 2.00 ms CGPathMoveToPoint
2.46 s 80.3% 2.46 s
CG::Path::recalculate_bounding_box()
5.00 ms 0.2% 4.00 ms
CG::Path::move_to_point(CGPoint const&, CGAffineTransform const*)
1.00 ms 0.0% 1.00 ms
CG::Path::convert_to_huge()
2.00 ms 0.1% 2.00 ms (anonymous
namespace)::transform_is_valid(CGAffineTransform const*)
1.00 ms 0.0% 1.00 ms
CG::Path::convert_to_huge()
1.00 ms 0.0% 1.00 ms
CGFloatValidateWithLog
1.00 ms 0.0% 1.00 ms
DYLD-STUB$$CGPathMoveToPoint
1.00 ms 0.0% 1.00 ms -[NSBezierPath
_cgPath]
1.00 ms 0.0% 1.00 ms objc_msgSend
1.00 ms 0.0% 1.00 ms (anonymous
namespace)::transform_is_valid(CGAffineTransform const*)
67.00 ms 2.2% 7.00 ms
-[NSBezierPath(NSBezierPathDevicePrimitives) _deviceLineToPoint:]
40.00 ms 1.3% 5.00 ms
-[NSBezierPath(NSBezierPathDevicePrimitives) _deviceClosePath]
39.00 ms 1.3% 2.00 ms -[NSBezierPath
lineToPoint:]
14.00 ms 0.5% 14.00 ms objc_msgSend
6.00 ms 0.2% 6.00 ms -[NSBezierPath _cgPath]
5.00 ms 0.2% 5.00 ms CGPathAddLineToPoint
4.00 ms 0.1% 4.00 ms __30-[NSBezierPath
_appendToPath:]_block_invoke
4.00 ms 0.1% 4.00 ms
objc_msgSend$lineToPoint:
2.00 ms 0.1% 2.00 ms CGPathIsEmpty
2.00 ms 0.1% 2.00 ms
objc_msgSend$moveToPoint:
2.00 ms 0.1% 2.00 ms
CG::Path::close_subpath()
1.00 ms 0.0% 1.00 ms
objc_msgSend$_deviceLineToPoint:
1.00 ms 0.0% 1.00 ms CGPathGetCurrentPoint
1.00 ms 0.0% 1.00 ms -[NSBezierPath
moveToPoint:]
1.00 ms 0.0% 1.00 ms
objc_msgSend$_deviceClosePath
1.00 ms 0.0% 1.00 ms objc_msgSend$closePath
1.00 ms 0.0% 1.00 ms
objc_msgSend$_deviceMoveToPoint:
3.00 ms 0.1% 3.00 ms -[NSBezierPath
lineToPoint:]
1.00 ms 0.0% 1.00 ms
-[NSBezierPath(NSBezierPathDevicePrimitives) _deviceLineToPoint:]
2.00 ms 0.1% 2.00 ms __49-[NSBezierPath
_enumeratePathElementsUsingBlock:]_block_invoke
1.00 ms 0.0% 1.00 ms objc_msgSend$setFlatness:
104.00 ms 3.4% 0 s -[NSBezierPath fill]
42.00 ms 1.4% 0 s -[NSBezierPath
transformUsingAffineTransform:]
7.00 ms 0.2% 0 s NSRectFill
2.00 ms 0.1% 0 s NSColorSetWithFillAndStroke
1.00 ms 0.0% 1.00 ms CGContextClipToRect
1.00 ms 0.0% 0 s -[NSBezierPath dealloc]
1.00 ms 0.0% 1.00 ms CGGStateSetCompositeOperation
1.00 ms 0.0% 1.00 ms lookup_named_face
5.00 ms 0.2% 4.00 ms set_buffer_internal_2
1.00 ms 0.0% 0 s unblock_input
1.00 ms 0.0% 0 s ns_draw_window_cursor
121.00 ms 3.9% 0 s ns_scroll_run
51.00 ms 1.7% 1.00 ms update_window_line
4.00 ms 0.1% 4.00 ms row_equal_p
1.00 ms 0.0% 1.00 ms xwidget_end_redisplay
1.00 ms 0.0% 0 s ns_update_end
Patch:
--- src/nsimage.m.orig
+++ src/nsimage.m
@@ -28,6 +28,7 @@ Updated by Christian Limpach (chris@HIDDEN)
/* This should be the first include, as it may set up #defines affecting
interpretation of even the system includes. */
#include <config.h>
+#include <CoreGraphics/CoreGraphics.h>
#include "lisp.h"
#include "dispextern.h"
@@ -510,10 +511,20 @@ - (void) setAlphaAtX: (int) x Y: (int) y to:
(unsigned char) a
}
/* Returns a pattern color, which is cached here. */
-- (NSColor *)stippleMask
+- (CGImageRef)stippleMask
{
- if (stippleMask == nil)
- stippleMask = [[NSColor colorWithPatternImage: self] retain];
+ if (stippleMask == nil) {
+ CGDataProviderRef provider = CGDataProviderCreateWithData (NULL,
[bmRep bitmapData],
+ [self
sizeInBytes], NULL);
+ id mask = (id)CGImageMaskCreate(
+ [self size].width,
+ [self size].height,
+ 8, 8, [self size].width,
+ provider, NULL, 0);
+
+ CGDataProviderRelease(provider);
+ stippleMask = (CGImageRef)[mask retain];
+ }
return stippleMask;
}
--- src/nsterm.h.orig
+++ src/nsterm.h
@@ -670,7 +670,7 @@ enum ns_return_frame_mode
{
NSBitmapImageRep *bmRep; /* used for accessing pixel data */
unsigned char *pixmapData[5]; /* shortcut to access pixel data */
- NSColor *stippleMask;
+ CGImageRef stippleMask;
@public
NSAffineTransform *transform;
BOOL smoothing;
@@ -687,8 +687,8 @@ enum ns_return_frame_mode
green: (unsigned char)g blue: (unsigned char)b
alpha:(unsigned char)a;
- (void)setAlphaAtX: (int)x Y: (int)y to: (unsigned char)a;
-- (NSColor *)stippleMask;
+- (CGImageRef)stippleMask;
- (Lisp_Object)getMetadata;
- (BOOL)setFrame: (unsigned int) index;
- (void)setTransform: (double[3][3]) m;
--- src/nsterm.m.orig
+++ src/nsterm.m
@@ -2903,22 +2903,24 @@ Hide the window (X11 semantics)
static void
ns_define_fringe_bitmap (int which, unsigned short *bits, int h, int w)
{
- NSBezierPath *p = [NSBezierPath bezierPath];
-
if (!fringe_bmp)
fringe_bmp = [[NSMutableDictionary alloc] initWithCapacity:25];
- [p moveToPoint:NSMakePoint (0, 0)];
- for (int y = 0 ; y < h ; y++)
- for (int x = 0 ; x < w ; x++)
- {
- bool bit = bits[y] & (1 << (w - x - 1));
- if (bit)
- [p appendBezierPathWithRect:NSMakeRect (x, y, 1, 1)];
- }
+ for (int i = 0; i < h; i++)
+ bits[i] = ~bits[i];
+
+ CGDataProviderRef provider = CGDataProviderCreateWithData (NULL, bits,
+ sizeof (unsigned short) * h, NULL);
+ if (provider) {
+ id p = (id)CGImageMaskCreate (w, h, 1, 1,
+ sizeof (unsigned short),
+ provider, NULL, 0);
+ CGDataProviderRelease (provider);
+
+ [fringe_bmp setObject:p forKey:[NSNumber numberWithInt:which]];
+ }
- [fringe_bmp setObject:p forKey:[NSNumber numberWithInt:which]];
}
@@ -2981,26 +2983,29 @@ Hide the window (X11 semantics)
NSRectFill (clearRect);
}
- NSBezierPath *bmp = [fringe_bmp objectForKey:[NSNumber
numberWithInt:p->which]];
+ CGImageRef bmp = (CGImageRef)[fringe_bmp objectForKey:[NSNumber
numberWithInt:p->which]];
if (bmp == nil
&& p->which < max_used_fringe_bitmap)
{
gui_define_fringe_bitmap (f, p->which);
- bmp = [fringe_bmp objectForKey: [NSNumber numberWithInt: p->which]];
+ bmp = (CGImageRef)[fringe_bmp objectForKey: [NSNumber
numberWithInt: p->which]];
}
if (bmp)
{
- NSAffineTransform *transform = [NSAffineTransform transform];
- NSColor *bm_color;
+ CGRect bounds = CGRectMake (p->x, p->y - p->dh,
+ CGImageGetWidth (bmp), CGImageGetHeight (bmp));
+
+ NSGraphicsContext *ctx = [NSGraphicsContext currentContext];
+ [ctx saveGraphicsState];
+ CGContextRef context = [ctx CGContext];
- /* Because the image is defined at (0, 0) we need to take a copy
- and then transform that copy to the new origin. */
- bmp = [bmp copy];
- [transform translateXBy:p->x yBy:p->y - p->dh];
- [bmp transformUsingAffineTransform:transform];
+ CGContextTranslateCTM (context,
+ CGRectGetMinX (bounds), CGRectGetMaxY (bounds));
+ CGContextScaleCTM (context, 1, -1);
+ NSColor *bm_color;
if (!p->cursor_p)
bm_color = [NSColor colorWithUnsignedLong:face->foreground];
else if (p->overlay_p)
@@ -3009,9 +3014,10 @@ Hide the window (X11 semantics)
bm_color = f->output_data.ns->cursor_color;
[bm_color set];
- [bmp fill];
+ bounds.origin = CGPointZero;
+ CGContextDrawImage (context, bounds, bmp);
- [bmp release];
+ [[NSGraphicsContext currentContext] restoreGraphicsState];
}
ns_unfocus (f);
}
@@ -3273,11 +3279,10 @@ Note that CURSOR_WIDTH is meaningful only for
(h)bar cursors.
ns_draw_underwave (struct glyph_string *s, EmacsCGFloat width,
EmacsCGFloat x)
{
int wave_height = 3, wave_length = 2;
- int y, dx, dy, odd, xmax;
- NSPoint a, b;
+ int y, dx, dy, xmax;
NSRect waveClip;
- dx = wave_length;
+ dx = wave_length * 2;
dy = wave_height - 1;
y = s->ybase - wave_height + 3;
xmax = x + width;
@@ -3287,25 +3292,24 @@ Note that CURSOR_WIDTH is meaningful only for
(h)bar cursors.
[[NSGraphicsContext currentContext] saveGraphicsState];
NSRectClip (waveClip);
- /* Draw the waves */
- a.x = x - ((int)(x) % dx) + (EmacsCGFloat) 0.5;
- b.x = a.x + dx;
- odd = (int)(a.x/dx) % 2;
- a.y = b.y = y + 0.5;
+ float ax = x - ((int)(x) % dx);
+ float ay = y + wave_height / 2.0;
- if (odd)
- a.y += dy;
- else
- b.y += dy;
+ NSBezierPath *path = [[NSBezierPath alloc] init];
+ [path moveToPoint: (NSPoint){ ax, ay }];
+
+ NSPoint stepOne = { dx, 0 };
+ NSPoint controlOne = { 0.5 * dx, dy };
+ NSPoint controlTwo = { 0.5 * dx, -dy };
- while (a.x <= xmax)
+ while (ax <= xmax)
{
- [NSBezierPath strokeLineFromPoint:a toPoint:b];
- a.x = b.x, a.y = b.y;
- b.x += dx, b.y = y + 0.5 + odd*dy;
- odd = !odd;
+ [path relativeCurveToPoint:stepOne controlPoint1:controlOne
controlPoint2:controlTwo];
+ ax += dx;
}
+ [path stroke];
+
/* Restore previous clipping rectangle(s) */
[[NSGraphicsContext currentContext] restoreGraphicsState];
}
@@ -3825,10 +3829,35 @@ Function modeled after x_draw_glyph_string_box ().
int box_line_width = max (s->face->box_horizontal_line_width, 0);
if (s->stippled_p)
- {
- struct ns_display_info *dpyinfo = FRAME_DISPLAY_INFO (s->f);
- [[dpyinfo->bitmaps[face->stipple-1].img stippleMask] set];
- goto fill;
+ {
+ [[NSColor colorWithUnsignedLong:face->background] set];
+ r = NSMakeRect (s->x, s->y + box_line_width,
+ s->background_width,
+ s->height - 2 * box_line_width);
+ NSRectFill (r);
+ s->background_filled_p = 1;
+
+ struct ns_display_info *dpyinfo = FRAME_DISPLAY_INFO (s->f);
+ CGImageRef mask =
+ [dpyinfo->bitmaps[face->stipple - 1].img stippleMask];
+
+ CGRect bounds = CGRectMake (s->x, s->y + box_line_width,
+ s->background_width,
+ s->height - 2 * box_line_width);
+ NSGraphicsContext *ctx = [NSGraphicsContext currentContext];
+ [ctx saveGraphicsState];
+ CGContextRef context = [ctx CGContext];
+
+ CGContextClipToRect (context, bounds);
+
+ CGContextScaleCTM (context, 1, -1);
+ [[NSColor colorWithUnsignedLong:face->foreground] set];
+
+ CGRect imageSize = CGRectMake (0, 0, CGImageGetWidth (mask),
+ CGImageGetHeight (mask));
+
+ CGContextDrawTiledImage (context, imageSize, mask);
+ [[NSGraphicsContext currentContext] restoreGraphicsState];
}
else if (FONT_HEIGHT (s->font) < s->height - 2 * box_line_width
/* When xdisp.c ignores FONT_HEIGHT, we cannot trust font
@@ -3851,7 +3880,6 @@ Function modeled after x_draw_glyph_string_box ().
else
[FRAME_CURSOR_COLOR (s->f) set];
- fill:
r = NSMakeRect (s->x, s->y + box_line_width,
s->background_width,
s->height - 2 * box_line_width);
@@ -4175,12 +4203,42 @@ Function modeled after x_draw_glyph_string_box ().
dpyinfo = FRAME_DISPLAY_INFO (s->f);
if (s->hl == DRAW_CURSOR)
[FRAME_CURSOR_COLOR (s->f) set];
- else if (s->stippled_p)
- [[dpyinfo->bitmaps[s->face->stipple - 1].img stippleMask] set];
- else
+ else if (s->stippled_p) {
+ [[NSColor colorWithUnsignedLong:s->face->background]
+ set];
+ NSRectFill (
+ NSMakeRect (x, s->y, background_width, s->height));
+
+ CGImageRef mask =
+ [dpyinfo->bitmaps[s->face->stipple - 1]
+ .img stippleMask];
+
+ CGRect bounds
+ = CGRectMake (s->x, s->y, s->background_width,
+ s->height);
+
+ NSGraphicsContext *ctx =
+ [NSGraphicsContext currentContext];
+ [ctx saveGraphicsState];
+ CGContextRef context = [ctx CGContext];
+ CGContextClipToRect(context, bounds);
+ CGContextScaleCTM (context, 1, -1);
+ [[NSColor colorWithUnsignedLong:s->face->foreground]
+ set];
+
+ CGRect imageSize
+ = CGRectMake (0, 0, CGImageGetWidth (mask),
+ CGImageGetHeight (mask));
+
+ CGContextDrawTiledImage (context, imageSize, mask);
+
+ [[NSGraphicsContext currentContext]
+ restoreGraphicsState];
+ }
+ else {
[[NSColor colorWithUnsignedLong: s->face->background] set];
-
- NSRectFill (NSMakeRect (x, s->y, background_width, s->height));
+ NSRectFill (NSMakeRect (x, s->y, background_width, s->height));
+ }
}
}
bug-gnu-emacs@HIDDEN:bug#73563; Package emacs.
Full text available.Received: (at 73563) by debbugs.gnu.org; 30 Sep 2024 12:27:17 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Sep 30 08:27:16 2024 Received: from localhost ([127.0.0.1]:44931 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1svFUi-0007jh-JB for submit <at> debbugs.gnu.org; Mon, 30 Sep 2024 08:27:16 -0400 Received: from eggs.gnu.org ([209.51.188.92]:41966) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eliz@HIDDEN>) id 1svFUg-0007jB-JQ for 73563 <at> debbugs.gnu.org; Mon, 30 Sep 2024 08:27:15 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <eliz@HIDDEN>) id 1svFU3-0002rx-K5; Mon, 30 Sep 2024 08:26:35 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=References:Subject:In-Reply-To:To:From:Date: mime-version; bh=sgpgEVTf7WdE1Nl18d8mqVd6+UV3/Hl+BxkoNBW23GM=; b=lCnMA+IuibSp S12j3lTimeBAZKSIy4XBj99Cp37SCkMxfiZzkXoxDZawJ/yhHW9RLplEzuPU79rCER0SNHCm3XEsC qxVYJ8qkB/mzedk404dhI7zQHJkadK942uRsyJkaRCVl92RNGs1hHBdmESeT5Fe74FxHNs27L6EuY 4WbENr0pLyLYlUu+q0HERvyhk/tZ55O+6IRavr514I7cO+lREEGzBVoi4Ej6GUasZZaz3jEspjtZ4 AQ+hzFltD2ab1o5bbDIAUS1Y1S842XZfALIoFj2HEUFhU+sobwjlhyOoeZaH2vUpuVIeUoQqEGibe kNbME89h/vTu5BYx876zbQ==; Date: Mon, 30 Sep 2024 15:26:31 +0300 Message-Id: <86plol2uq0.fsf@HIDDEN> From: Eli Zaretskii <eliz@HIDDEN> To: Stefan Kangas <stefankangas@HIDDEN> In-Reply-To: <CADwFkmn9fhiU7XfXu5Ku+ouuxH=J+cx73n-APP7Gkq4FdywD0g@HIDDEN> (message from Stefan Kangas on Mon, 30 Sep 2024 07:21:03 +0000) Subject: Re: bug#73563: [Ben Simms] Performance bottleneck in ns_draw_fringe_bitmap References: <CALNBX0aNy78GFVTfR_4O6hdeOcBiFLiKUJSi+kVbciXqLOd+jw@HIDDEN> <CADwFkmn9fhiU7XfXu5Ku+ouuxH=J+cx73n-APP7Gkq4FdywD0g@HIDDEN> X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 73563 Cc: ben@HIDDEN, 73563 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) > Cc: Ben Simms <ben@HIDDEN> > From: Stefan Kangas <stefankangas@HIDDEN> > Date: Mon, 30 Sep 2024 07:21:03 +0000 > > Hi all, I recently started using Emacs (ns) HEAD on an ARM macos sonoma > system. > > I've noticed that ns_draw_fringe_bitmap is a fairly large performance sink > when using pixel scrolling (to the point of 99% of cpu time being inside this > function, with Emacs drawing at approx 5Hz). The slowness here isn't as > obvious when not pixel scrolling, presumably because Emacs never tries to > redraw at 60+Hz otherwise. > > I have performed some profiling and discovered that in my observed worse case > situation, of the 99% of cpu time spent in ns_draw_fringe_bitmap, approx 50% > is spent in [NSBezierPath copy], and approx 30% in [NSBezierPath fill]. According to the posted profile, ns_draw_fringe_bitmap takes much less than 99% of CPU time, somewhere around 10%. What am I missing?
bug-gnu-emacs@HIDDEN:bug#73563; Package emacs.
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charset="UTF-8" I'm forwarding this to the bug tracker so that we don't lose track of it. Original message: https://lists.gnu.org/r/emacs-devel/2024-06/msg00900.html -------------------- Start of forwarded message -------------------- From: Ben Simms <ben@HIDDEN> Date: Wed, 26 Jun 2024 13:56:43 +0200 Subject: Performance bottleneck in ns_draw_fringe_bitmap To: emacs-devel@HIDDEN --0000000000002a887a0623510c8e Content-Type: text/plain; charset="US-ASCII" Content-Disposition: attachment Content-Transfer-Encoding: base64 X-Attachment-Id: 583748d02080dd75_0.2 LS0tLS0tLS0tLS0tLS0tLS0tLS0gRW5kIG9mIGZvcndhcmRlZCBtZXNzYWdlIC0tLS0tLS0tLS0t LS0tLS0tLS0tCg== --0000000000002a887a0623510c8e Content-Type: text/html; charset="utf-8" Content-Disposition: attachment Content-Transfer-Encoding: base64 X-Attachment-Id: 583748d02080dd75_0.1.1 PGRpdiBkaXI9Imx0ciI+SGkgYWxsLCBJIHJlY2VudGx5IHN0YXJ0ZWQgdXNpbmcgRW1hY3MgKG5z KSBIRUFEIG9uIGFuIEFSTSBtYWNvcyBzb25vbWEgc3lzdGVtLjxkaXY+PGJyPjwvZGl2PjxkaXY+ SSYjMzk7dmUgbm90aWNlZCB0aGF0IG5zX2RyYXdfZnJpbmdlX2JpdG1hcCBpcyBhIGZhaXJseSBs 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Stefan Kangas <stefankangas@HIDDEN>:ben@HIDDEN, bug-gnu-emacs@HIDDEN.
Full text available.ben@HIDDEN, bug-gnu-emacs@HIDDEN:bug#73563; Package emacs.
Full text available.
GNU bug tracking system
Copyright (C) 1999 Darren O. Benham,
1997 nCipher Corporation Ltd,
1994-97 Ian Jackson.