Tiago Vignatti

Outras informações:
- Operating Systems design: I have designed an architecture for systems with shared physical memory to exploit the advantages of heterogeneous computing, saving memory and boosting performance on graphics libraries (details here http://goo.gl/AsxDVc). This innovative architecture and code are now (2016) fully-upstreamed on Linux and also in Chrome OS, which is largely being shipped within Chromebooks and other products. - Performance and Optimization: In 2015, I modified Chrome OS to make zero-copy texture uploads possible (full report at http://goo.gl/iJUPW). In the best scenario the Web content now is loaded 38% faster, using 65% lower memory. This optimization is being shipped in millions of devices using Chrome OS on Intel Architecture. - Web Browser development: When I ported Chrome to run on Wayland (2013), it became obvious that a new abstraction for hosting different window systems in Chrome was needed. Therefore together with Google I have developed Ozone and implemented its first backend, Ozone-Wayland (http://goo.gl/Y8FnK1). Commercial products have been using it, including a smart TVs' multi-billion corporation and a Digital Signage for a fast food chain installed in more than 6,500 stores. This later influenced Google to switch Chrome for Ozone as well (http://goo.gl/jPW01N). - R&D: In 2012 we released the first version of Wayland. This event was much expected by the Linux community because it replaced the de facto X11, a protocol that existed for 25 years and contained several limitations when used in modern devices. I was involved on designing Wayland protocol and the architecture of Weston compositor: development of backlight display control, input devices hotplug, multi-touch support, client APIs ("tablet shell"), and XWayland (a transitional module for running X11 apps atop Wayland). As of 2016, the adoption of Wayland scales up to many millions of users and range from mobile, IVI / automotive, set top box / smart TV to Linux distributions

Outras informações:
- Productization: Working in the Maemo operating system for building N900, the first Nokia smartphone running on Linux. Also, developing MeeGo for N9, the N900 successor and critically-acclaimed Linux smartphone. - Software development: I have made contributions throughout the open-source graphics stack: the X Window System implementation (Xorg), the PowerVR SGX driver, the OpenGL ES 2D/3D open-source driver and the Qt-based compositor manager. The architecture platform was OMAP / ARM. I have also developed and helped to build Wayland protocol and its reference compositor Weston, making sure that this (back then) innovative graphics system could run on different platform vendors.

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