Greg Pomerantz
93b27d724b
The 19-26 ms mid-scroll stalls (Mali-only, fixed content offsets) were the Skia renderer's final synchronous GrDirectContext::flush() blocking the UI thread on Mali driver back-pressure — proven by per-stage timestamps in the vendored renderer (stall frames: flush 19-24 ms, walk 1-3 ms, 1 binding re-eval, image imports 0.1 ms each). - vendor/i-slint-renderer-skia (pinned 1.18.1, [patch.crates-io]): remove that one flush. Redundant on the wgpu backend: the surface already calls flush_and_submit before queue.present, same Vulkan queue, in-order. Phone: 0 stalls across 4 runs (max 3.6-7.4 ms vs the 8.3 ms budget), display verified clean. - docs/BUGS/slint-skia-final-flush-jank.md: full evidence, prior art (slint-ui/slint#12030 closest), open question for a future upstream filing (not filed yet). - Profiling also retired the O(n)-walk theory: Slint 1.18 prunes the item walk to ~133-152 items; the windowed Flickable built on that theory was already reverted (ListView is smooth with the fix). - Strip all jank-hunt instrumentation: FR/SCR/TICK/APLYD/STG logging, stg markers, .gallery_* file knobs, jsamp thread sampler, DbgScroll programmatic scroll, nblog perf-file mirroring. Also fixes the 'launches into unstoppable fast scroll' bug: a leftover .gallery_cmd was re-read on every launch (file never deleted) and overrode user swipes — the hook is gone. - Keep: nblog (logd backpressure is real), zero-dimension decode guards, keep-alive (default-off). - HANDOFF: replace stale windowed-Flickable section with the actual root cause/fix; 15 unit tests pass. Verified on phone (aarch64, 8580 photos) and emulator (x86_64).
44 lines
3.5 KiB
Markdown
44 lines
3.5 KiB
Markdown
# Slint Royalty-free Desktop, Mobile, and Web Applications License
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Version 2.0
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## Preamble
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Slint is a toolkit that can be used to build user interfaces for applications. Slint (hereafter referred to as **Software**) is made available under different licenses by SixtyFPS GmbH incorporated at Oranienburger Str. 44, 16540 Hohen Neuendorf, Germany (**SixtyFPS**). The **Slint Royalty-free Desktop, Mobile, and Web Applications License** is suitable for those who develop desktop, mobile, or web applications and do not want to use open source components under copyleft licenses.
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## 1. Grant of Rights
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SixtyFPS hereby grants You a world-wide, royalty-free, non-exclusive license to use, reproduce, make available, modify, display, perform, distribute the Software as part of a Desktop, Mobile, or Web Application.
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A **Desktop Application** is a computer program that is designed to run on a general-purpose computer (PC or notebook), typically installed and executed locally on the computer's operating system.
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A **Mobile Application** is a computer program that is designed to run on a general-purpose mobile computer (mobile phone or tablet), typically installed and executed locally on the computer's operating system.
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A **Web Application** is a computer program that is designed to run in the sandbox environment provided by a web browser.
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Desktop Application, Mobile Application, and Web Application are hereafter referred to as **Application**.
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## 2. License Conditions - Attribution
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You may distribute the Software as part of an Application, modified or unmodified, provided that You do either of the following:
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(a) Display the [`AboutSlint`](https://docs.slint.dev/latest/docs/slint/reference/std-widgets/misc/aboutslint/) widget in an "About" screen or dialog that is accessible from the top level menu of the Application. In the absence of such a screen or dialog, display the widget in the "Splash Screen" of the Application.
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(b) Display the [Slint attribution badge](https://github.com/slint-ui/slint/tree/master/logo/MadeWithSlint-logo-whitebg.png) on a public webpage, preferably where the binaries of your Application can be downloaded from, in such a way that it can be easily found by any visitor to that page.
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## 3. Limitations
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The License does not permit to distribute or make the Software publicly available alone and without integration into an Application. For this purpose you may use the Software under the GNU General Public License, version 3.
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The License does not permit the use of the Software within Embedded Systems. An **Embedded System** is a computer system designed to perform a specific task within a larger mechanical or electrical system.
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The License does not permit the distribution of Application that exposes the APIs, in part or in total, of the Software.
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You may not remove or alter any license notices (including copyright notices, disclaimers of warranty, or limitations of liability) contained within the source code form of the Software.
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## 4. Warranty and Liability
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SixtyFPS is only liable for conflicting rights of third parties if SixtyFPS was aware of these rights without informing you. Unless required by applicable law or agreed to in writing, SixtyFPS provides the Software on an "as is" basis, without warranties or conditions of any kind, either express or implied, including, without limitation, any warranties or conditions of merchantability, or fitness for a particular purpose.
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Unless required by law, SixtyFPS won't be liable for any direct, indirect, incidental, or consequential damages arising in any way out of the use of the Software.
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