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-\setbeamercolor{block title}{fg=lightgray,bg=black}
+\setbeamercolor{block title}{fg=amber,bg=black}
+
\title{\textbf{OpenGL and Vulkan Interoperability}}
-\author[Eleni Maria Stea]{\small{Eleni Maria Stea
+\author[Eleni Maria Stea <estea@igalia.com>]{\small{Eleni Maria Stea
<estea@igalia.com>}\\\\\includegraphics{data/igalia.eps}}
-\date{}
+\date{XDC 2020}
\AtBeginSection[]
{
- \begin{frame}<beamer>
+ \begin{frame}
\frametitle{Outline}
\tableofcontents[currentsection]
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\section[Introduction]{The concept behind OpenGL and Vulkan interoperability}
+\section[Introduction]{OpenGL and Vulkan interoperability extensions}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\begin{frame}
- \frametitle{Why interoperability?}
-
- The idea is to avoid unnecessary allocations and memory mappings when we
- exchange texture and buffer data across APIs.\\
- \vspace{0.3cm}
- Interoperability extensions allow us to:\\
- \vspace{0.8cm}
-
- {\fontsize{9}{9}\selectfont
- \begin{itemize}\setlength\itemsep{0.8cm}
- \item {\color[rgb]{0, 0, 0.6} Allocate the resources (textures,
- buffers) once.}
- \item {\color[rgb]{0, 0, 0.6} Reuse them several times from both
- APIs.}
- \item {\color[rgb]{0, 0, 0.6} Synchronize the APIs access to the
- resources.}
+\begin{frame}[fragile,c]
+ \frametitle{OpenGL and Vulkan Interoperability Concept}
+
+ \begin{center}
+ \textbf{\color{coolblack}{INTEROPERABILITY}}
+ \vspace{0.5cm}
+
+%
+% The idea is to avoid unnecessary allocations and conversions when we
+% exchange texture and buffer data across APIs.\\
+%
+
+ \vspace{0.5cm}
+ \begin{tabular}{l}
+ \rowcolor{coolblack}
+ \multicolumn{1}{c}{
+ \color{paleaqua}{EXT\_external\_objects(\_fd) extensions allow:}
+ }\\
+ \rowcolor{platinum}
+ \\
+ \rowcolor{platinum}
+ \small{· \color{coolblack}{\textbf{Allocating} resources (like textures,
+ buffers) \textbf{once} from Vulkan.}}\\
+ \rowcolor{platinum}
+ \small{· \color{coolblack}{\textbf{Reusing} them \textbf{several times} from
+ both APIs.}}\\
+ \rowcolor{platinum}
+ \small{· \color{coolblack}{\textbf{Synchronizing} the APIs access to
+ the resources.}}\\
+ \rowcolor{platinum}
+ \\
+ \end{tabular}
+
+ \vspace{0.5cm}
+ \end{center}
+ \footnotesize{\textbf{Example:} a VR compositor where the left and right eye
+ images are allocated and displayed by Vulkan but their contents are filled by
+ OpenGL processes.}
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\begin{frame}[fragile]
+ \frametitle{OpenGL extensions for interoperability on Linux}
+
+ \center{\textbf{\color{coolblack}{OpenGL Extensions (Linux)}}}
+ \vspace{0.2cm}
+
+ \setbeamertemplate{itemize/enumerate body begin}{\footnotesize}
+ \setbeamertemplate{itemize/enumerate subbody begin}{\tiny}
+ \setbeamertemplate{itemize/enumerate subsubbody begin}{\tiny}
+
+ \setbeamertemplate{itemize items}[triangle]
+ \setbeamertemplate{blocks}[rounded][shadow]
+
+ \begin{block}{\color{afblue}{\footnotesize\textbf{EXT\_external\_object\_fd
+ (EXT\_memory\_object\_fd, EXT\_semaphore\_fd)}:}}
+ \begin{itemize}
+ \item enables an OpenGL application to import a memory object or
+ semaphore from POSIX file descriptor external handles
+ (\textbf{Linux only!})
\end{itemize}
- }
+ \end{block}
+
+ \vspace{0.2cm}
+
+ \begin{block}{\color{afblue}{\footnotesize\textbf{EXT\_external\_object
+ (EXT\_memory\_object, EXT\_semaphore)}:}}
+ \begin{itemize}
+ \item enables an OpenGL application to:
+ \small{
+ \begin{itemize}
+ \setbeamertemplate{itemize/enumerate subbody begin}{\normalsize}
+
+ \item[--] create OpenGL objects, textures buffers and semaphores from
+ imported Vulkan memory
+ \item[--] synchronize the rendering using the GL semaphores
+ \end{itemize}
+ }
+ \item {extends existing GL calls that set and query properties}
+ \end{itemize}
+ \end{block}
\end{frame}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\section[Interoperability on Mesa]{Additions to Mesa and Piglit}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{frame}
- \frametitle{What's the alternative?}
-
- Alternatively we would need to:\\
- \vspace{0.8cm}
-
- {\fontsize{9}{9}\selectfont
- \begin{itemize}\setlength\itemsep{0.8cm}
- \item {\color[rgb]{0, 0, 0.6} Allocate resources of the same
- size in both APIs.}
- \item {\color[rgb]{0, 0, 0.6} Map the Vulkan memory and copy the Vulkan object data to a an
- OpenGL object data (and \textit{do all the necessary
- conversions!}).}
- \item {\color[rgb]{0, 0, 0.6} Copy the data back after the process (and \textit{do all the
- necessary conversions!}).}
- \item {\color[rgb]{0, 0, 0.6} Synchronize the access externally
- (more complex).}
+ \frametitle{Igalia's contributions}
+
+ \setbeamertemplate{blocks}[rounded]
+ \center{
+ \normalsize{\textbf{\color{coolblack}{Work on the feature}}}
+ }
+
+ \vspace{0.5cm}
+
+ \begin{block}{Mesa}
+ \footnotesize{
+ Igalia contributed to the implementation of the interoperability
+ extensions for different {\color{deepjunglegreen}\textbf{Mesa
+ drivers}}.
+ }
+ \end{block}
+
+ \vspace{0.5cm}
+
+ \begin{block}{Piglit (drivers testing framework)}
+ \footnotesize{
+ As there were \textbf{no CTS}, we've written a Vulkan framework for
+ {\color{coolblack}\textbf{Piglit}} and Vulkan/GL tests that cover
+ some common
+ EXT\_external\_objects(\_fd) use cases.
+ }
+ \end{block}
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\begin{frame}
+ \frametitle{Additions to Mesa (the details)}
+
+ \center{
+ \normalsize{\textbf{\color{coolblack}{Contributions to Mesa
+ drivers}}}
+ }
+ \tiny{
+ \begin{table}[t]
+ \begin{tabularx}{\textwidth}{|l|X|l|}
+ \hline
+ \rowcolor{paleaqua}
+ Driver & Igalia's Contributions & Status \\
+ \hline
+ \hline
+ \rowcolor{platinum}
+ iris & \textbf{\color{coolblack}implemented} EXT\_external\_objects,
+ EXT\_external\_objects\_fd & \cellcolor{babypink}{under review (MR
+ !4337)}\\
+ \rowcolor{whitesmoke}
+ freedreno & \textbf{\color{coolblack}implemented} EXT\_external\_objects,
+ EXT\_external\_objects\_fd & \cellcolor{green}{upstream} \\
+ \rowcolor{platinum}
+ radeonsi & \textbf{\color{coolblack}fixes} to the already implemented feature &
+ \cellcolor{bananamania}{work in
+ progress (WIP MR !6364)} \\
+ \rowcolor{whitesmoke}
+ i965 & helped with the \textbf{\color{coolblack}review}, patches & \cellcolor{babypink}{under review
+ (Draft MR !5594)}\\
+ \hline
+ \end{tabularx}
+ \end{table}
+ }
+
+ \center{
+ \normalsize{\textbf{\color{coolblack}{Contributors, reviewers,
+ people who helped!}}}
+ }
+
+ \tiny{
+ \begin{table}[ht]
+ \begin{tabularx}{\textwidth}{|l|X|X|}
+ \hline
+ \rowcolor{paleaqua}
+ Driver & Patches & Reviews, Comments, Advice\\
+ \hline
+ \hline
+ \rowcolor{platinum}
+ iris & Juan A. Suárez Romero, Eleni Maria Stea, Tapani Pälli, Eduardo Lima Mitev
+ & Tapani Pälli, Rohan Garg, Eric Engestrom, Kenneth Graunke,
+ Jason Ekstrand, Oscar Barenys, Daniel Stone, Matt Turner, Tomeu Vizoso \\
+ \rowcolor{whitesmoke}
+ freedreno & Eduardo Lima Mitev, Hyunjun Ko & Rob
+ Clark, Marek Olšák, Jonathan Marek, Rohan Garg\\
+ \rowcolor{platinum}
+ radeonsi & The feature was implemented by
+ AMD a few years ago and we are mostly working on fixes (WIP).
+ & feedback from: Bas Nieuwenhuizen, Marek Olšák \\
+ \rowcolor{whitesmoke}
+ i965 & Rohan Garg, Juan A. Suárez Romero, Tapani Pälli
+ & Tomeu Vizoso, Eleni Maria Stea, Oscar Barenys \\
+ \hline
+ \end{tabularx}
+ \end{table}
+ }
+
+ \tiny{
+ \begin{itemize}
+ \item {The information above was accurate at the beginning of
+ September when I pre-recorded this presentation! Apologies if
+ I've not included someone or something!}
\end{itemize}
}
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\section[EXT\_external\_objects(\_fd)]{The required OpenGL extensions}
+
+\begin{frame}[fragile]
+ \frametitle{Additions to Piglit (the details) I}
+
+ \begin{center}
+ \normalsize{\textbf{\color{coolblack}{Contributions to Piglit I }}}
+ \end{center}
+
+ \tiny{
+ \begin{center}\textbf{Reusing color images:}\end{center}
+ \begin{table}[t]
+ \begin{tabularx}{\textwidth}{|l|X|c|l|}
+ \hline
+ \rowcolor{paleaqua}
+ Test name & Description
+ & Output & Status\\
+ \hline
+ \hline
+ \rowcolor{platinum}
+ vk-image-overwrite &
+ The test allocates images of different formats and
+ tiling modes using Vulkan and fills their pixels using OpenGL.
+ &
+ \adjustbox{valign=t, margin=1ex, padding=1ex}{\includegraphics[height=1cm]{shots/image_overwrite.png}} & \cellcolor{green}{upstream}\\
+ \hline
+ \rowcolor{whitesmoke}
+ vk-image-display &
+ The test allocates a Vulkan image and renders a
+ pattern to it using Vulkan. Then it displays it using OpenGL.
+ The test uses semaphores to synchronize the GL, Vulkan access to
+ the texture.\vspace{0.3cm} &
+ \adjustbox{valign=t, margin=1ex,
+ padding=1ex}{\includegraphics[height=1cm]{shots/image_display.png}}
+ & \cellcolor{green}{upstream}\\
+ \hline
+ \rowcolor{platinum}
+ vk-image-display-overwrite &
+ Similar to the previous ones, but the Vulkan texture data are
+ overwritten again with OpenGL and then read back from Vulkan. &
+ \adjustbox{valign=t, margin=1ex,
+ padding=1ex}{\includegraphics[height=1cm]{shots/image_display_overwrite.png}}
+ & \cellcolor{green}{upstream}\\
+ \hline
+ \end{tabularx}
+ \end{table}
+ }
+\end{frame}
+
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\begin{frame}
- \frametitle{test}
- foobar
+\begin{frame}[fragile]
+ \frametitle{Additions to Piglit (the details) II}
+
+ \begin{center}
+ \normalsize{\textbf{\color{coolblack}{Contributions to Piglit II }}}
+ \end{center}
+
+ \tiny{
+ \begin{center}\textbf{Reusing the depth and stencil buffer:}\end{center}
+ \begin{table}[t]
+ \begin{tabularx}{\textwidth}{|l|X|c|l|}
+ \hline
+ \rowcolor{paleaqua}
+ Test name & Description
+ & Output & Status\\
+ \hline
+ \hline
+ \rowcolor{platinum}
+ vk-depth-display & On the Vulkan side we draw a quad at a
+ specific depth to fill the z buffer with a recognizable pattern.
+ Then we use the Vulkan z buffer from OpenGL, where we clear the
+ framebuffer to green and render a
+ blue fullscreen quad positioned on the z-axis further away than
+ the depth of the original quad. If the z buffer has been imported
+ correctly the blue quad should be partially obscured due to the
+ depth test failing in the middle.
+ \vspace{0.3cm}
+ &
+ \adjustbox{valign=t, margin=1ex,
+ padding=1ex}{\includegraphics[height=1cm]{shots/depth.png}}
+ & \cellcolor{babypink}{under review}\\
+ \hline
+ \rowcolor{whitesmoke}
+ vk-stencil-display & Similarly, a small quad is rendered with
+ Vulkan and the stencil test enabled. It is
+ then imported and used by OpenGL that renders a fullscreen quad
+ with the stencil test enabled. Pixels that pass the stencil test
+ have the quad color and the rest the framebuffer
+ color.
+ \vspace{0.3cm} &
+ \adjustbox{valign=t, margin=1ex,
+ padding=1ex}{\includegraphics[height=1cm]{shots/stencil.png}}
+ & \cellcolor{babypink}{under review}\\
+ \hline
+ \end{tabularx}
+ \end{table}
+ }
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\section[Piglit tests use cases]{Some use cases for Piglit}
+
+\begin{frame}[fragile]
+ \frametitle{Additions to Piglit (the details) III}
+
+ \begin{center}
+ \normalsize{\textbf{\color{coolblack}{Contributions to Piglit III }}}
+ \end{center}
+
+ \tiny{
+ \begin{center}\textbf{Reusing a pixel buffer:}\end{center}
+
+ \begin{table}[t]
+ \begin{tabularx}{\textwidth}{|l|X|l|l|}
+ \hline
+ \rowcolor{paleaqua}
+ Test name & Description
+ & Output & Status\\
+ \hline
+ \hline
+ \rowcolor{platinum}
+ vk-buf-exchange &
+ The test renders an image and copies it to a buffer using
+ Vulkan. Then, the buffer is imported in OpenGL and is used as
+ pixel storage for an OpenGL texture. OpenGL renders the texture
+ and we validate that it contains the pattern that was rendered
+ by Vulkan. \vspace{0.3cm} &
+ \adjustbox{valign=t, margin=1ex,
+ padding=1ex}{\includegraphics[height=1cm]{shots/image_display.png}}
+ & \cellcolor{green}{upstream}\\
+ \hline
+ \rowcolor{whitesmoke}
+ vk-pix-buf-update-errors &
+ The test is similar to the previous one with the difference that
+ we attempt to overwrite the buffer using BufferSubData. We
+ validate that an invalid operation error is generated and the
+ contents of the buffer remain unchanged after the
+ attempt.\vspace{0.3cm} &
+ \adjustbox{valign=t, margin=1ex,
+ padding=1ex}{\includegraphics[height=1cm]{shots/image_display.png}}
+ & \cellcolor{blond}{work in progress}\\
+ \hline
+ \end{tabularx}
+ \end{table}
+ }
+\end{frame}
+
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\begin{frame}
- \frametitle{test}
- foobar
+\begin{frame}[fragile]
+ \frametitle{Additions to Piglit (the details) IV}
+
+ \begin{center}
+ \normalsize{\textbf{\color{coolblack}{Contributions to Piglit IV }}}
+ \end{center}
+
+ \tiny{
+ \begin{center}\textbf{Reusing a vertex buffer:}\end{center}
+ \begin{table}[t]
+ \begin{tabularx}{\textwidth}{|l|X|l|l|}
+ \hline
+ \rowcolor{paleaqua}
+ Test name & Description
+ & Output & Status\\
+ \hline
+ \hline
+ \rowcolor{platinum}
+ vk-vert-buf-update-errors &
+ A Vulkan vertex buffer is allocated and filled with data so that
+ the vertices create quads that follow a chess pattern. This
+ vertex buffer is used by OpenGL that clears the screen with red
+ and paints the pixels blue.
+ We validate that the geometry is correct and that we can't
+ overwrite it using \texttt{glBufferSubdata}. \vspace{0.3cm} &
+ \adjustbox{valign=t, margin=1ex,
+ padding=1ex}{\includegraphics[height=1cm]{shots/vert_buf_update_errors.png}}
+ & \cellcolor{blond}{work in progress}\\
+ \hline
+ \rowcolor{whitesmoke}
+ vk-vert-buf-reuse &
+ Similar to the previous test, but the Vulkan vertex buffer is
+ used in a Vulkan renderpass afterwards to make sure Vulkan can
+ read back and reuse the vertex buffer.\vspace{0.3cm} &
+ \adjustbox{valign=t, margin=1ex,
+ padding=1ex}{\includegraphics[height=1cm]{shots/vert_buf_update_errors.png}}
+ &
+ \cellcolor{blond}{work in progress}\\
+ \hline
+ \end{tabularx}
+ \end{table}
+ }
\end{frame}
-\section[Work and Status]{Igalia's work on mesa}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\begin{frame}[fragile]
+ \frametitle{Additions to Piglit (the details) V}
+ \begin{center}
+ \normalsize{\textbf{\color{coolblack}{Contributions to Piglit V }}}\\
+ \vspace{0.5cm}
+ \scriptsize{Same as with mesa many people helped us with the work on the
+ tests:}
+ \end{center}
+
+ \tiny{
+ \begin{table}[t]
+ \begin{tabularx}{\textwidth}{|l|X|}
+ \hline
+ \rowcolor{paleaqua}
+ Contributors & Contributions \\
+ \hline
+ \hline
+ \rowcolor{platinum}
+ Eleni Maria Stea & tests, Vulkan framework code \\
+ \rowcolor{whitesmoke}
+ Juan A. Suárez Romero & contributions to the framework, and
+ vk-image-overwrite, testing \\
+ \rowcolor{platinum}
+ Tapani Pälli (\textit{\color{coolblack}{many thanks!}}) & reviews, testing and patches
+ for the framework \\
+ \rowcolor{whitesmoke}
+ Bas Nieuwenhuizen & framework patch to support dedicated memory \\
+ \rowcolor{platinum}
+ Topi Pohjolainen & we've used some old patches of him as an example
+ at the very beginning\\
+ \hline
+ \end{tabularx}
+ \end{table}
+ }
+
+ \begin{itemize}
+ \item Also thanks to Germán Poo Caamaño who helped tidying up the
+ initial mess of the Vulkan framework commits.
+ \item Again, this information was accurate when I prepared and
+ pre-recorded the slides. Sorry if I am missing someone or something!
+ \end{itemize}
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\begin{frame}[fragile]
+ \frametitle{Piglit Results}
+ \begin{block}{\begin{center}Conclusions from running the tests:\end{center}}
+ \begin{itemize}
+ \vspace{0.5cm}
+ \item The feature seems to work well for the most use cases tested in
+ all mesa drivers mentioned before.\\
+ \vspace{0.5cm}
+ \item Depth and stencil buffer exchange is only supported on
+ proprietary Nvidia driver, unfortunately not on Mesa yet.\\
+ \vspace{0.5cm}
+ \item radeonsi needs some fixes to better support buffers and
+ optimal tiling (WIP).
+ \vspace{0.5cm}
+ \end{itemize}
+ \end{block}
+
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+%\begin{frame}[fragile]
+% \frametitle{vk-image-overwrite}
+% \begin{block}{vk-image-overwrite}
+% \lstinline[language=C++, style=CStyle]{glCreateMemoryObjectsEXT(1, gl_mem_obj); }
+% \end{block}
+%\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\section[Q \& A]{Questions}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
\begin{frame}
- \frametitle{test}
- foobar
+ \frametitle{Questions?}
+ {\fontsize{8}{7}\selectfont
+ \begin{center}
+ \begin{figure}
+ \includegraphics[scale=0.04]{data/qmark.png}
+ \end{figure}
+ \vspace{0.7cm}
+ {\large E-mail: {\color{coolblack}estea@igalia.com}}\\
+ {\large IRC/Freenode: {\color{coolblack}hikiko}}\\
+ \end{center}
+ }
\end{frame}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\section[Q \& A]{Questions and Answers}
+\section[References]{References}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%\setbeamertemplate{bibliography entry title}{}
+%\setbeamertemplate{bibliography entry location}{}
+%\setbeamertemplate{bibliography entry note}{}
+\setbeamerfont{bibliography item}{size=\footnotesize}
+\setbeamerfont{bibliography entry author}{size=\footnotesize}
+\setbeamerfont{bibliography entry title}{size=\footnotesize}
+\setbeamerfont{bibliography entry year}{size=\footnotesize}
+\setbeamerfont{bibliography entry note}{size=\footnotesize}
+
+\begin{frame}[allowframebreaks]
+ \frametitle{Links}
+ \bibliographystyle{unsrt}
+ \bibliography{bib/references.bib}
+ \nocite{*}
+\end{frame}
+
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\begin{frame}[plain]
+\begin{minipage}[b][0.6\textheight]{\linewidth}
+ \begin{picture}(0, 0)
+ \put(0, -76){%
+ \pgfuseimage{igaliabglight}
+ }
+ \begin{minipage}[b][0.4\textheight]{\linewidth}
+ \begin{figure}
+ \includegraphics[scale=0.6]{data/mesa.png}
+ \end{figure}
+ \end{minipage}
+ \put(-200, 0) {
+ \hfill \huge{\textbf{\color{coolblack}Thank you!}}\\
+ }
+ \end{picture}
+\end{minipage}
+
+\end{frame}
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projects / fc2020 / blobdiff