WebRender (MadRust)
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Por Martin Robinson. Martin Robinson, Igalia hacker y domador de píxeles en Servo y Gecko, nos hablará de cómo WebRender está rompiendo todos los moldes en el mundo del renderizado web. (Charla en Inglés). (c) Tercer Meetup MadRust 19 Abril 2018, Madrid (España) https://www.meetup.com/es-ES/MadRust/events/249664085/
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This document discusses techniques for optimizing the performance of HTML5 games on mobile devices. It begins with an overview of HTML5 game architecture and the WebKit rendering process. It then analyzes sources of performance issues, such as painting size and DOM complexity. The document recommends several optimization techniques, including DOM/canvas hybrid rendering, static object pooling, smart repainting of invalidated areas only, and minimizing source image scaling. Case studies demonstrating these techniques for real games are also presented.
Kaggle Lyft Motion Prediction for Autonomous Vehicles 4th Place Solution
Overview of the Kaggle Lyft Motion Prediction for Autonomous Vehicles competition and the 4th place winning solution.
Mongo nyc nyt + mongodb
The document discusses lessons learned from using MongoDB at the New York Times over 6 months. It covers initial setup without backups or monitoring, improving to replication and monitoring, optimizing storage, backups, restores, querying, indexing and administration. Key lessons include using replication and backups, monitoring all aspects of MongoDB and storage, optimizing data and indexes for queries, and understanding data and access patterns.
Tech meetup: Web Applications Performance
This document summarizes a tech meetup on web application performance. It introduces the moderators and discusses why performance is important. It outlines what can be optimized on the front-end and back-end, such as PHP opcode caching, memory object caching, database performance, and JavaScript. Specific techniques are provided to improve caching, reduce payload size and round trips, and optimize rendering. Tools for analyzing performance are also introduced. The document emphasizes that perception of speed is critical to a good user experience.
Cloud storage: the right way OSS EU 2018
1. The document discusses cloud object storage, describing its features like multipart uploads, versioning, and lifecycles. It provides examples of using object storage for media and documents.
2. Key aspects of object storage security are covered, including signatures, encryption, access control lists, and policies. Disaster recovery options like geo-replication are also summarized.
3. In the conclusion, the document emphasizes using object storage APIs to access advanced features, ensuring data safety, testing disaster recovery plans, and using Ceph for private cloud object storage.
High-Performance GPU Programming for Deep Learning
This session goes over many of the techniques we use at Nervana in GPU programming to achieve state-of-the-art performance for deep learning networks. The main focus will be on the customization of dense linear algebra kernels: Winograd 3x3 convolution, direct convolution, and small tile GEMM (matrix multiply). In particular, we'll look at how we achieve high utilization at very small mini batches which is important for multi-gpu scaling and inference. In addition we'll talk about where and how you can effectively leverage lower and mixed precision to further increase performance without loss in accuracy.
Archmage, Pinterest’s Real-time Analytics Platform on Druid
In this talk, we will talk about:
1) the motivation of switching from Hbase backed analytics system to Druid
2) the architecture design of Druid as a platform in Pinterest (Archmage, Hadoop, Kafka) including a query interface, Archmage, a thrift service in front of Druid which exposes a thrift api to company-wise clients, handles Druid broker hosts discovery, serves as a relay to broker hosts to abstract the async HTTP connection and provides query optimizations transparent to clients including directly translating fixed pattern SQL to Druid native JSON queries to save planning time. In addition, we’ll cover the production Hadoop batch and Kafka real time ingestion pipeline setup and the reason we picked a pull-based solution instead of a push-based solution for real time ingestion.
3) We will also talk about the use cases currently running in production on this platform including their data volume, QPS, Druid cluster setup, the unique challenges we met while onboarding and how we addressed them with extensive tunings to meet SLA and lessons learned for use cases including: partner insights, which provides partners with stats on organic pins; realtime spam detection, which detects user login related anomaly events and pin related spamming events like pin creation and repin; and migrating the backend from Presto to Druid for Ads related experiments data analysis.
Troubleshooting MySQL from a MySQL Developer Perspective
Working as a MySQL Developer as part of the Bugs committee exposes you to a variety of bugs, such as server crashes, memory leaks, wrong query results, internal thread deadlocks, and others. In this talk, I will cover some of the technics we utilize to troubleshoot MySQL when things are not working as expected.
Some of the topics covered include:
Reproducible test cases
Git Bisect
Stack Traces
GDB
Record and Replay
By the end of this session, attendees will grasp how to tackle analyses of when software is not working as expected.
Towards shipping Ozone/Wayland (BlinkOn 10)
By Maksim Sisov.
Slides at https://docs.google.com/presentation/d/13D5M9ZDGM-i33GDjMFLFrPHWRvYJcZvai3zI4RQ0tDM/edit#slide=id.p1
(c) BlinkOn 10
Toronto, Ontario (Canada)
April 09 - 10, 2019
https://docs.google.com/document/u/1/d/e/2PACX-1vTgBrqyQ4KCchsymvssri1pN1BkOg3sEqHThqhvFDl9-zl-hLx1S5c8sc5gaZ_VzKEVaYj94H3m1vso/pub#h.igsyfaa103a0
NUMA and Java Databases
Talk given on state of NUMA with Java databases such as Cassandra and how it can improved / ameliorated, and compared with traditional storage engines.
WT-4072, Rendering Web Content at 60fps, by Vangelis Kokkevis, Antoine Labour...
WT-4072, Rendering Web Content at 60fps, by Vangelis Kokkevis, Antoine Labour...AMD Developer Central
Presentation WT-4072, Rendering Web Content at 60fps, by Vangelis Kokkevis, Antoine Labour and Brian Salomon at the AMD Developer Summit (APU13) Nov. 11-13, 2013. WT-4067, High performance WebGL games with the Turbulenz Engine, by Ian Balla...
WT-4067, High performance WebGL games with the Turbulenz Engine, by Ian Balla...AMD Developer Central
The document discusses the Turbulenz game engine for developing high performance WebGL games. It provides an overview of the Turbulenz gaming platform and publishing platform as well as the game engine itself. It then covers considerations for CPU and GPU performance optimization when using the engine. Specific APIs and components of the engine are described including the 2D and 3D rendering APIs and scene graph functionality.Drupal BigPipe: What have I learned
This document provides an overview of BigPipe in Drupal 8 and how it works to improve perceived page load performance. BigPipe sends the initial content quickly using small requests to fill in remaining parts, so the page appears interactive sooner. It works by caching page parts separately using cache metadata and lazy rendering. Placeholders are generated for non-cached parts and replaced later. This allows caching the base page for all users while dynamically filling in varying content like a shopping cart in the placeholders. Modules just need to provide proper cache metadata rather than complex configuration.
Screen Space Reflections in The Surge
The document discusses screen space reflections implemented in the game The Surge. It describes using screen space ray marching against the depth buffer to find reflection points, convolving the scene to accumulate multiple bounces, and using asynchronous compute to overlap rendering passes and improve performance. Key techniques included interleaved rendering, temporal reprojection, and using local data storage. Performance gains were achieved through optimizations like lower resolution rendering and computing mip chains in-place.
KubeCon EU 2019 - P2P Docker Image Distribution in Hybrid Cloud Environment w...
Docker image is a foundational building block of container based infrastructure, but distributing high volume of docker images in a multi-zone, hybrid cloud system has been a scaling problem for many.
In this talk, we will walk through different approaches we investigated for distributing docker images and introduce Uber’s own solution, Kraken, a P2P docker registry loosely based on BitTorrent protocol, and capable of distributing terabytes of images within seconds.
This talk will cover:
- Image distribution solutions and their characteristics
- Whether you need a p2p solution
- Architecture, performance and security features of Kraken
- How to deploy Kraken in a Kubernetes cluster
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Kaggle Lyft Motion Prediction for Autonomous Vehicles 4th Place Solution
Kaggle Lyft Motion Prediction for Autonomous Vehicles 4th Place Solution
High-Performance GPU Programming for Deep Learning
High-Performance GPU Programming for Deep Learning
Archmage, Pinterest’s Real-time Analytics Platform on Druid
Archmage, Pinterest’s Real-time Analytics Platform on Druid
Troubleshooting MySQL from a MySQL Developer Perspective
Troubleshooting MySQL from a MySQL Developer Perspective
WT-4072, Rendering Web Content at 60fps, by Vangelis Kokkevis, Antoine Labour...
WT-4072, Rendering Web Content at 60fps, by Vangelis Kokkevis, Antoine Labour...
WT-4067, High performance WebGL games with the Turbulenz Engine, by Ian Balla...
WT-4067, High performance WebGL games with the Turbulenz Engine, by Ian Balla...
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More from Igalia
A Year of the Servo Reboot: Where Are We Now?
Created by Mozilla Research in 2012 and now part of Linux Foundation Europe, the Servo project is an experimental rendering engine written in Rust. It combines memory safety and concurrency to create an independent, modular, and embeddable rendering engine that adheres to web standards. Stewardship of Servo moved from Mozilla Research to the Linux Foundation in 2020, where its mission remains unchanged. After some slow years, in 2023 there has been renewed activity on the project, with a roadmap now focused on improving the engine’s CSS 2 conformance, exploring Android support, and making Servo a practical embeddable rendering engine. In this presentation, Rakhi Sharma reviews the status of the project, our recent developments in 2023, our collaboration with Tauri to make Servo an easy-to-use embeddable rendering engine, and our plans for the future to make Servo an alternative web rendering engine for the embedded devices industry.
(c) Embedded Open Source Summit 2024
April 16-18, 2024
Seattle, Washington (US)
https://events.linuxfoundation.org/embedded-open-source-summit/
https://ossna2024.sched.com/event/1aBNF/a-year-of-servo-reboot-where-are-we-now-rakhi-sharma-igalia
Building End-user Applications on Embedded Devices with WPE
The Web engine is the most important component of a Web Browser, enabling
developers to harness the power of the Web Platform to build their
applications. However, Web Browsers are not the only type of applications that
can be built with Web Engines, which can also be used to develop other types of
applications using the same Web-based technologies, but for a different type of
use cases other than "browsing the Web".
These use cases can cover a wide range of situations outside of the traditional
desktop or mobile environments, such as the ones embedded systems are usually
used for (e.g. set-top-boxes, smart home appliances, GPS navigation devices, or
in-car/in-flight infotainment systems, to name a few). And in those situations
it is very common to be running on boards with SoCs and a particular set of HW
capabilities that make it crucial for the Web Engine to be able to tightly
integrate with them.
In this session we will focus on how WPE, a fully Open Source port of the
WebKit Web engine for Linux-based embedded devices, can be used to adapt to the
different challenges that embedded devices pose to develop end-user
applications, using the power of the Web Platform underneath.
(c) Embedded Open Source Summit 2024
April 16-18, 2024
Seattle, Washington (US)
https://events.linuxfoundation.org/embedded-open-source-summit/
https://eoss24.sched.com/event/1aNTr/building-end-user-applications-on-embedded-devices-with-wpe-mario-sanchez-prada-igalia
Raspberry Pi 5: Challenges and Solutions in Bringing up an OpenGL/Vulkan Driv...
The Raspberry Pi 5 was announced on October 2023. This new version of the
popular embedded device comes with a new iteration of Broadcom’s VideoCore GPU
platform, and was released with a fully open source driver stack, developed by
Igalia. The presentation will discuss some of the major changes required to
support this new Video Core iteration, the challenges we faced in the process
and the solutions we provided in order to deliver conformant OpenGL ES and
Vulkan drivers. The talk will also cover the next steps for the open source
Raspberry Pi 5 graphics stack.
(c) Embedded Open Source Summit 2024
April 16-18, 2024
Seattle, Washington (US)
https://events.linuxfoundation.org/embedded-open-source-summit/
https://eoss24.sched.com/event/1aBEx
Automated Testing for Web-based Systems on Embedded Devices
Every day, embedded devices are becoming more powerful and capable of running
more elaborate applications. Among these applications are Web-based ones,
enabling to leverage features from the Web APIs to the embedded context, either
through a generic browser running a traditional Web application or through a
customized Web engine tightly integrated within the system.
But such capabilities usually bring new challenges, like testing user
interactions with the application using the embedded device's specific I/O
methods, such as gestures, or inspecting Web application internals with
JavaScript. In this context, using a browser automation framework such as
WebDriver, which is a W3C standard supported by WebKit Web engine, allows
testing Web-based applications on such devices as if the user were actually
using it, alongside running custom JS code.
In this session, we will cover why we need browser automation for testing on
certain types of embedded devices, with a focus on WebDriver as the proposed
tool to achieve that goal. We will also discuss WebDriver's main features and
limitations, as well as other possible approaches and frameworks that could be
considered for this kind of task.
(c) Embedded Open Source Summit 2024
April 16-18, 2024
Seattle, Washington (US)
https://events.linuxfoundation.org/embedded-open-source-summit/
https://eoss24.sched.com/event/1aeSx/automated-testing-for-web-based-systems-on-embedded-devices-lauro-moura-igalia
Embedding WPE WebKit - from Bring-up to Maintenance
Embedded devices have become powerful enough to run Web content a decade ago,
and any modern SoC that can run Linux and includes a GPU is a potential
candidate to hide a Web engine under the surface. How did it made it there?
Does it only show Web content? What else can it do? The talk will cover
bring-up tips to build and get WPE WebKit working on your custom embedded
device and make your own simple Web browser, as well as the best practices for
keeping the system up to date. No less important is integration with the rest
of the system: this session will detail the possibilities that WebKit brings to
the table, including how to add new JavaScript APIs which call into native code
to provide tight, performant access to platform functionality.
(c) Embedded Open Source Summit 2024
April 16-18, 2024
Seattle, Washington (US)
https://events.linuxfoundation.org/embedded-open-source-summit/
https://eoss24.sched.com/event/1aBFQ/embedding-wpe-webkit-from-bring-up-to-maintenance-adrian-perez-de-castro-igalia
Optimizing Scheduler for Linux Gaming.pdf
This talk dives into how the scheduler impacts your gameplay on Linux and
unveils our journey to smoother gameplay. How does task scheduling impact Linux
gaming? Suboptimal task scheduling can cause stuttering while playing games on
the Steam Deck game console. First, we nail down the enemy. What exactly is
"stuttering," and how can we measure its impact on your gameplay? Next, we
extensively analyzed the characteristics of game tasks from the scheduler’s
point of view. Characterizing task behavior in Linux gaming helps to understand
why some schedulers create much stuttering and others create less and to unveil
the secrets behind smooth vs. choppy performance. Lastly, we will share our
progress on the optimized scheduler for reducing the stuttering problems in
Linux gaming, especially Steam Deck. We implemented the scheduling policy based
on sched_ext, a BPF-based extensible scheduling framework.
(c) Open Source Summit North America 2024
April 16-18, 2024
Seatle, Washington (US)
https://events.linuxfoundation.org/open-source-summit-north-america/
https://ossna2024.sched.com/event/1aBOT/optimizing-scheduler-for-linux-gaming-changwoo-min-igalia
Running JS via WASM faster with JIT
So, we are adding a backend for the SpiderMonkey’s codegen to enable JIT
support for JavaScript running through Wasm. Sounds a bit cryptic so let’s
divide it into parts.
SpiderMonkey is a JavaScript engine which is used for running JavaScript inside
the Firefox browser. SpiderMonkey is written in C++ and supports compilation
into the Wasm module, see live demo -
https://mozilla-spidermonkey.github.io/sm-wasi-demo/. However, SpiderMonkey
compiled into the Wasm module supports execution of JavaScript only in the
interpreter-only mode and it doesn’t support just-in-time compilation because
there is no Wasm backend for that. There are backends for Arm, X86, X64 etc but
there is none for Wasm.
Why do we want to add support for JIT? Well, because we want speed. Right now
there is no solution to run JS scripts via Wasm fast, there are only
interpreters.
Why does JIT improve performance?
The reasons are the same for why an interpreter is slower than a compiler -
because it eliminates the interpreter loop, uses a more efficient ABI and, more
importantly, it can specialize polymorphic operations in JavaScript. So, we not
only enable the JIT tier in SpiderMonkey for Wasm but we also provide support
for inline caches.
Inline caches is a mechanism for specializing the behavior of particular
operations like plus or a call to specific arguments provided at runtime.
With all that we can generate Wasm modules on the fly, instantiate them, and
link them to provide from ~2x to ~11x speedup over the interpreter. In the
talks we will cover how the whole scheme works with SpiderMonkey: 1. How to
link modules on the fly into SpiderMonkey.wasm 2. How to add an exotic Wasm
backend into SpiderMonkey’s supported backend line - X64, X86, Arm, Wasm 3. How
to use the whole solution in the cloud instead of QuickJS 4. How to get a
speedup of your JS over wasm with test data.
Wasm I/O 2024
14 - 15 Mar, 2024
Barcelona
https://2024.wasmio.tech/
To crash or not to crash: if you do, at least recover fast!
What could be possibly worse that an almost unbeatable boss in
a game or a tough maze that consume hours of gameplay with not
much progress? How about a Linux kernel crash that makes you
lose all the game progress with no apparent reason or feedback?
Though rare, it is a real possibility that would make gamers
quite annoyed, given that Linux is used more and more as a
platform for playing games.
Some technologies are available to collect logs and feedback
the user in case such disastrous events happen, mostly related
with kernel crashes handling mechanisms. The main ones available
are kdump and pstore, but still there are work to be done in
this area...
In this talk we're going to present the basics about kernel
crash handling, like how a kernel panic might happen, how to
deal with that (with an overall discussion about kdump and
pstore techs) and the kdumpst tool, developed specially to
deal with this situation on Steam Deck (and generically on
Arch Linux); also we're gonna discuss some missing
pieces / ideas to make it even less likely gamers need to
complain that their device just got hang for no reason!
FOSForums 2023
Aug 26 - Aug 27, 2023
Institute of Computing, State University of Campinas (Unicamp)
Campinas, São Paulo, Brazil
https://www.fosforums.org/
Implementing a Vulkan Video Encoder From Mesa to GStreamer
(c) Vulkanised 2024
The 6th Vulkan Conference
Sunnyvale, CA. USA
Feb 5-7, 2024
https://vulkan.org/events/vulkanised-2024
8 Years of Open Drivers, including the State of Vulkan in Mesa
(c) Vulkanised 2024
The 6th Vulkan Conference
Sunnyvale, CA. USA
Feb 5-7, 2024
https://vulkan.org/events/vulkanised-2024
Introducción a Mesa. Caso específico dos dispositivos Raspberry Pi por Igalia
Nesta charla impartida por Alejandro Piñeiro de Igalia, darase unha introdución
a Mesa, librería open-source para o desenvolvemento de drivers gráficos.
Explicarase a súa historia, os seus compoñentes máis importantes, que
utilidades proporcionan aos desenvolvedores e unha lista de hardware ás que dan
soporte. Finalmente explicarase o caso concreto do soporte proporcionado para
as GPUs dos dispositivos da serie Raspberry Pi, centrándonos nas Raspberry Pi 4
e Raspberry Pi 5
Igalia é unha empresa galega, con sede na Coruña, especializada en servizos de
consultoría, e que desenvolve solucións innovadoras de código aberto para un
gran conxunto de plataformas de software e hardware. En Igalia traballan nas
áreas máis interesantes do software de código aberto, incluídos navegadores,
gráficos e multimedia.
Igalia desenvolveu os controladores OpenGL ES 3.1 e Vulkan 1.2 conformes para a
GPU VideoCore VII Broadcom que se fornece coa nova Raspberry Pi 5.
Alejandro Piñeiro é enxeñeiro de Software e socio en Igalia, é desenvolvedor de
Software Libre desde 2004. A súa experiencia inclúe unha variedade de proxectos
de GNOME e freedesktop.org, enfocándose desde 2015 en Mesa, especificamente os
drivers Intel e Broadcom. É un dos responsables do desenvolvemento do
controlador Broadcom Vulkan para Raspberry Pi 4 & 5.
Máis información en https://aindustriosa.org/Mesa/
Esta actividade está patrocinada pola Xunta de Galicia e pola Axencia Para a
Modernización Tecnolóxica (AMTEGA).
(c) A Industriosa
https://aindustriosa.org
28 de Outubro (Vigo)
2023 in Chimera Linux
Chimera Linux is a novel Linux distribution built around FreeBSD core tools and
the LLVM toolchain. Since its initial launch in 2021, it has made a lot of
progress and is now in alpha stage. The system can be deployed on a wide array
of hardware and many people are using it as their desktop system; it works on
x86_64, AArch64, POWER (little and big endian) as well as RISC-V and by now
comes with thousands of packages.
While trying to be practical, Chimera is also highly hardened, partly thanks to
the LLVM toolchain, rendering it immune to various security issues other
distros are vulnerable to. It has transparent and robust infrastructure,
ensuring smooth deployment of packages. We are also developing various new
tooling that the whole ecosystem can benefit from, including the Turnstile
session tracker. Service management is based around Dinit, a modern,
supervising system; we maintain and create a variety of tooling around it,
trying to break the existing status quo with systemd, while abandoning legacy
approaches.
2023 has seen several major milestones, so I will focus on these, while also
giving a short overview so that people unfamiliar with the system don't feel
lost. I will also explain how our work benefits the entire Linux ecosystem, as
well as beyond.
(c) FOSDEM 2024
3 & 4 February 2024
https://fosdem.org/2024/schedule/event/fosdem-2024-2524-2023-in-chimera-linux/
Building a Linux distro with LLVM
For the last 3 years, I've been building a complete Linux distribution, Chimera
Linux (https://chimera-linux.org) using solely LLVM as its system toolchain -
that means Clang, compiler-rt, and libc++, alongside its other tooling. Right
now, it is a complete desktop system that is already used by many, with a
familiar GNOME interface and thousands of packages, targeting 5 CPU
architectures. In this talk I would like to focus on my experiences using the
toolchain, what obstacles got in the way, how I dealt with them, the issues
that are still left and I would like to see addressed, the many benefits using
LLVM gave the project, and overall give the audience an insight into practical
deployment of LLVM in a project where it isn't simply a drop-in alternative to
GCC.
(c) FOSDEM 2024
3 & 4 February 2024
https://fosdem.org/2024/schedule/event/fosdem-2024-2555-building-a-linux-distro-with-llvm/
turnip: Update on Open Source Vulkan Driver for Adreno GPUs
Turnip changed a lot since the last status update. You could now run AAA
desktop games via FEX + Turnip, Adreno 7xx is now supported, Turnip is used by
emulators on Android, and more!
(c) FOSDEM 2024
3 & 4 February 2024
https://fosdem.org/2024/schedule/event/fosdem-2024-2033-turnip-update-on-open-source-vulkan-driver-for-adreno-gpus/
Graphics stack updates for Raspberry Pi devices
This talk will show the efforts done in the Open-Source graphics stack for
supporting Raspberry Pi devices. Although the talk will focus on the recently
launched new Raspberry Pi 5, we will show the improvements done for previous
generations of the Raspberry Pi hardware.
Raspberry Pi 5 has available FLOSS GPU drivers on product launch, exposing
OpenGL-ES 3.1 and Vulkan 1.2. We'll go through the changes needed to enable
desktop OpenGL 3.1 on RPi4/5.
We will also review the changes done to the kernel driver to expose the RPi5
capabilities and the new GPU stats support for RPi4/5.
Finally, we will show the work done to use Wayfire as the default Wayland
compositor on the Raspberry Pi OS.
- https://www.mesa3d.org/
- https://www.raspberrypi.com/
- https://wayfire.org/
(c) FOSDEM 2024
3 & 4 February 2024
https://fosdem.org/2024/schedule/event/fosdem-2024-2841-graphics-stack-updates-for-raspberry-pi-devices/
Delegated Compositing - Utilizing Wayland Protocols for Chromium on ChromeOS
This talk will cover our experience in utilizing Wayland subsurfaces and
implementing delegated compositing for Chromium on ChromeOS. Several concepts
will be covered - from overlay making decision in Chromium/Viz to design and
implementation of custom Wayland protocols, which were required to pass frame
data as overlays via Wayland and reconstruct that frame on the Wayland server
side.
(c) FOSDEM 2024
3 & 4 February 2024
https://fosdem.org/2024/schedule/event/fosdem-2024-3177-delegated-compositing-utilizing-wayland-protocols-for-chromium-on-chromeos/
MessageFormat: The future of i18n on the web
Internationalization in JavaScript and on the web platform is very complicated,
but also vastly important for us developers in order to build accessible and
intelligible interfaces. Thankfully, Unicode Consortium's MessageFormat working
group and TC39 have been hard at work standardizing the next generation of i18n
tooling that aims to unify analogous non-standard tools in use today while
approaching this problem from a fresh perspective.
Join me along this tour of i18n in JavaScript, discover some of the newest
additions to the toolkit and learn about the ongoing MessageFormat proposal and
how it aims to radically improve the developer experience.
(c) FOSDEM 2024
3 & 4 February 2024
https://fosdem.org/2024/schedule/event/fosdem-2024-2832-messageformat-the-future-of-i18n-on-the-web/
Replacing the geometry pipeline with mesh shaders
This talk will discuss the problems with the traditional vertex processing
pipeline and present how mesh shading solves these problems. Instead of
processing a fixed set of input vertices, mesh shaders can create an arbitrary
topology of vertices and primitives. Mesh shading also includes a new solution
for geometry amplification: task shaders.
The talk should be scheduled before Timur's talk about implementing mesh
shaders in the RADV Mesa driver.
(c) X.Org Developer Conference (XDC) 2022
October 4-6, 2022
Minneapolis, Minnesota, USA
https://indico.freedesktop.org/event/2/
I'm not an AMD expert, but...
Let's talk about developing AMD display drivers in the DRM subsystem as an
external contributor. Part of this work is a trail of breadcrumbs to build
documentation. What are those breadcrumbs? How do they help to review, fix,
improve and enable features of AMD drivers? How would both sides benefit if
those pieces of information were already documented? We are gathering
information from anywhere and also bothering experts for input. Ultimately,
this presentation focuses on AMD driver development but may fit DRM drivers of
any GPU vendors.
(c) X.Org Developer Conference (XDC) 2022
October 4-6, 2022
Minneapolis, Minnesota, USA
https://indico.freedesktop.org/event/2/
Status of Vulkan on Raspberry
There has been a lot of activity in V3DV, the Vulkan driver for Raspberry Pi 4,
over the last year: we have significantly reworked our synchronization code,
obtained Vulkan 1.1 conformance, implemented Vulkan 1.2 support, continued to
work on compiler optimizations and more.
In this talk I would like to go through the main development milestones and
changes we implemented in the driver as well as discussing some limitations of
the underlying hardware platform that have discouraged us from implementing
features such as scalar block layout or fp16.
(c) X.Org Developer Conference (XDC) 2022
October 4-6, 2022
Minneapolis, Minnesota, USA
https://indico.freedesktop.org/event/2/
More from Igalia (20)
Building End-user Applications on Embedded Devices with WPE
Building End-user Applications on Embedded Devices with WPE
Raspberry Pi 5: Challenges and Solutions in Bringing up an OpenGL/Vulkan Driv...
Raspberry Pi 5: Challenges and Solutions in Bringing up an OpenGL/Vulkan Driv...
Automated Testing for Web-based Systems on Embedded Devices
Automated Testing for Web-based Systems on Embedded Devices
Embedding WPE WebKit - from Bring-up to Maintenance
Embedding WPE WebKit - from Bring-up to Maintenance
To crash or not to crash: if you do, at least recover fast!
To crash or not to crash: if you do, at least recover fast!
Implementing a Vulkan Video Encoder From Mesa to GStreamer
Implementing a Vulkan Video Encoder From Mesa to GStreamer
8 Years of Open Drivers, including the State of Vulkan in Mesa
8 Years of Open Drivers, including the State of Vulkan in Mesa
Introducción a Mesa. Caso específico dos dispositivos Raspberry Pi por Igalia
Introducción a Mesa. Caso específico dos dispositivos Raspberry Pi por Igalia
turnip: Update on Open Source Vulkan Driver for Adreno GPUs
turnip: Update on Open Source Vulkan Driver for Adreno GPUs
Delegated Compositing - Utilizing Wayland Protocols for Chromium on ChromeOS
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Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-and-domino-license-cost-reduction-in-the-world-of-dlau/
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Unlock the Future of Search with MongoDB Atlas_ Vector Search Unleashed.pdf
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WebRender (MadRust)
- 1. MadRust • April 19, 2018 Martin Robinson Igalia
- 2. Page Rendering ● Final stage in web engine pipeline ● Very performance sensitive ● Deeply integrated with input handling ● Competes with layout and script for CPU time ● Culprit in common web page problems ○ Slow frame rate ○ Scrolling jank ○ Rendering bugs
- 5. Pros and Cons of Layers ● Pros ○ Layers can move very quickly ○ Allows for 3D transformations ○ Re-rasterization can be limited to a single layer ● Cons ○ Overlapping layers lead to overdraw ○ Increased memory usage due to double or triple buffering ○ Still using the CPU to render content ○ GPU-usage not optimal ○ Deep rendering pipeline
- 6. What is the ideal rendering engine for a browser?
- 7. Wish List ● Fast (60fps, especially when scrolling) ● Use the GPU as much as possible ● Use the CPU efficiently (Rust!!) ● Limit overdraw ● Limit memory usage
- 8. Focus on CSS Primitives ● Boxes ● Borders ● Images ● Text ● Shadows ● Gradients ● Stacking Contexts ○ Transformation ○ Blending ○ Filters
- 9. WebRender
- 10. Z-Culling ● Every object assigned a z-index in the z-buffer ● Opaque objects are rendered from front-to-back ● Translucent objects are rendered back-to-front ● The GPU uses z-buffer to avoid painting occluded pixels
- 11. Z-Culling ● Every object assigned a z-index in the z-buffer ● Opaque objects are rendered from front-to-back ● Translucent objects are rendered back-to-front ● The GPU uses z-buffer to avoid painting occluded pixels Don’t need to paint any content underneath this box.
- 12. Batching ● Render similar things together ● Avoid GPU state changes ● Find a good balance between aggressive batching and opportunities for using the depth buffer ● We are re-rendering everything every frame ● Cache expensive primitives ○ Font glyphs ○ Shadows ○ Blurs Caching
- 13. Trying WebRender ● If you use Servo, you are always using WebRender ● Firefox Nightly ○ about:config → layers.acceleration.force-enabled=true ○ Enable WebRender (3 options) ■ about:config → gfx.webrender.enabled=true ■ Environment variable: MOZ_WEBRENDER=1 ■ Build with ac_add_options --enable-webrender
- 14. Collaborate ● Find us on Github: http://github.com/servo/webrender ● File bugs ○ Firefox specific bugs @ Bugzilla ○ WebRender specific bugs @ Github ● IRC (irc.mozilla.org) ○ #gfx ○ #servo ● Open bugs