eleni.mutantstargoat.com Git - fc2020/blob - estea-xdc2020.tex

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 126 \setbeamerfont{frametitle}{size=\small}
 127
 128 \setbeamertemplate{blocks}[default]
 129 \setbeamercolor{block title}{fg=amber,bg=black}
 130
 131 \title{\textbf{OpenGL and Vulkan Interoperability}}
 132 \author[Eleni Maria Stea <estea@igalia.com>]{\small{Eleni Maria Stea
 133 <estea@igalia.com>}\\\\\includegraphics{data/igalia.eps}}
 134 \date{XDC 2020}
 135
 136 \AtBeginSection[]
 137 {
 138   \begin{frame}
 139     \frametitle{Outline}
 140         \tableofcontents[currentsection]
 141   \end{frame}
 142 }
 143
 144 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 145 \begin{document}
 146 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 147
 148 \begin{frame}[plain]
 149 \titlepage
 150 \end{frame}
 151
 152 \begin{frame}
 153         \frametitle{Outline}
 154         \tableofcontents
 155 \end{frame}
 156
 157 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 158
 159 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 160 \section[Introduction]{OpenGL interoperability extensions}
 161 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 162
 163 \begin{frame}[fragile,c]
 164         \frametitle{Interoperability Concept}
 165
 166         \begin{center}
 167         \textbf{\color{coolblack}{INTEROPERABILITY}}
 168         \vspace{0.5cm}
 169
 170 %
 171 %       The idea is to avoid unnecessary allocations and conversions when we
 172 %       exchange texture and buffer data across APIs.\\
 173 %
 174
 175         \vspace{0.5cm}
 176         \begin{tabularx}{\textwidth}{X}
 177                 \rowcolor{coolblack}
 178                 \multicolumn{1}{c}{
 179                 \color{paleaqua}{EXT\_external\_objects(\_fd) extensions enable:}
 180                 }\\
 181                 \rowcolor{platinum}
 182                 \\
 183                 \rowcolor{platinum}
 184                 \small{· \color{coolblack}{\textbf{Allocation} of resources (textures,
 185                 buffers) from Vulkan and {\textbf{sharing}} of those resources from both APIs}
 186                 }
 187                 \\
 188                 \rowcolor{platinum}
 189                 \\
 190                 \rowcolor{platinum}
 191                 \small{· \color{coolblack}{\textbf{Synchronization} of the access to
 192                 shared resources between APIs.}}\\
 193                 \rowcolor{platinum}
 194                 \\
 195         \end{tabularx}
 196
 197                 \vspace{0.5cm}
 198         \end{center}
 199         \footnotesize{\textbf{Example:} a VR compositor where the left and right eye
 200         images are allocated and displayed by Vulkan but their contents are filled by
 201         OpenGL processes.}
 202 \end{frame}
 203
 204 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 205
 206 \begin{frame}[fragile]
 207         \frametitle{OpenGL extensions for interoperability on Linux}
 208
 209         \center{\textbf{\color{coolblack}{OpenGL Extensions (Linux)}}}
 210         \vspace{0.2cm}
 211
 212         \setbeamertemplate{itemize/enumerate body begin}{\footnotesize}
 213         \setbeamertemplate{itemize/enumerate subbody begin}{\tiny}
 214         \setbeamertemplate{itemize/enumerate subsubbody begin}{\tiny}
 215
 216         \setbeamertemplate{itemize items}[triangle]
 217         \setbeamertemplate{blocks}[rounded][shadow]
 218
 219         \begin{block}{\color{afblue}{\footnotesize\textbf{EXT\_external\_objects\_fd
 220                 (EXT\_memory\_object\_fd, EXT\_semaphore\_fd)}:}}
 221                 \begin{itemize}
 222                         \item enables an OpenGL application to import a memory object or
 223                                 semaphore from POSIX file descriptor external handles
 224                 \end{itemize}
 225         \end{block}
 226
 227         \vspace{0.2cm}
 228
 229         \begin{block}{\color{afblue}{\footnotesize\textbf{EXT\_external\_objects
 230                 (EXT\_memory\_object, EXT\_semaphore)}:}}
 231                 \begin{itemize}
 232                         \item enables an OpenGL application to
 233                                 create OpenGL objects corresponding to Vulkan objects (textures,
 234                                 buffers, semaphores) and synchronize access to shared objects
 235                                 across APIs
 236                         \item {extends existing GL calls that set and query properties}
 237                 \end{itemize}
 238         \end{block}
 239 \end{frame}
 240
 241 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 242 \section[Interoperability on Mesa]{Additions to Mesa and Piglit}
 243 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 244 \begin{frame}
 245         \frametitle{Igalia's contributions}
 246
 247         \setbeamertemplate{blocks}[rounded]
 248         \center{
 249                 \normalsize{\textbf{\color{coolblack}{Work on the feature}}}
 250                 }
 251
 252         \vspace{0.5cm}
 253
 254         \begin{block}{Mesa}
 255                 \footnotesize{
 256                         Igalia contributed to the implementation of the interoperability
 257                         extensions for different {\color{deepjunglegreen}\textbf{Mesa
 258                         drivers}}.
 259                         }
 260         \end{block}
 261
 262         \vspace{0.3cm}
 263
 264         \begin{block}{Piglit (drivers testing framework)}
 265                 \footnotesize{
 266                         As there were \textbf{no conformance tests} available for the
 267                         extensions, we've written a Vulkan framework for
 268                         {\color{coolblack}\textbf{Piglit}} and Vulkan/GL tests that cover
 269                         some common
 270                         EXT\_external\_objects(\_fd) use cases.
 271                         }
 272         \end{block}
 273 \end{frame}
 274
 275 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 276
 277 \begin{frame}
 278         \frametitle{Additions to Mesa (the details)}
 279
 280         \center{
 281                 \normalsize{\textbf{\color{coolblack}{Contributions to Mesa
 282         drivers}}}
 283         }
 284         \tiny{
 285                 \begin{table}[t]
 286                         \begin{tabularx}{\textwidth}{|l|X|l|}
 287                                 \hline
 288                                 \rowcolor{paleaqua}
 289                                 Driver & Igalia's Contributions & Status \\
 290                                 \hline
 291                                 \hline
 292                                 \rowcolor{platinum}
 293                                 iris & \textbf{\color{coolblack}implemented} EXT\_external\_objects,
 294                                 EXT\_external\_objects\_fd & \cellcolor{babypink}{under review (MR
 295                                 !4337)}\\
 296                                 \rowcolor{whitesmoke}
 297                                 freedreno & \textbf{\color{coolblack}implemented} EXT\_external\_objects,
 298                                 EXT\_external\_objects\_fd & \cellcolor{green}{upstream} \\
 299                                 \rowcolor{platinum}
 300                                 radeonsi & \textbf{\color{coolblack}fixes} to the already implemented feature &
 301                                 \cellcolor{bananamania}{work in
 302                                 progress (WIP MR !6364)} \\
 303                                 \rowcolor{whitesmoke}
 304                                 i965 & helped with the \textbf{\color{coolblack}review}, patches & \cellcolor{babypink}{under review
 305                                 (Draft MR !5594)}\\
 306                                 \hline
 307                         \end{tabularx}
 308                 \end{table}
 309         }
 310
 311         \center{
 312                 \normalsize{\textbf{\color{coolblack}{Contributors, reviewers,
 313                 people who helped!}}}
 314         }
 315
 316         \tiny{
 317                 \begin{table}[ht]
 318                         \begin{tabularx}{\textwidth}{|l|X|X|}
 319                                 \hline
 320                                 \rowcolor{paleaqua}
 321                                 Driver & Patches & Reviews, Comments, Advice\\
 322                                 \hline
 323                                 \hline
 324                                 \rowcolor{platinum}
 325                                 iris & Juan A. Suárez Romero, Eleni Maria Stea, Tapani Pälli, Eduardo Lima Mitev
 326                                 & Tapani Pälli, Rohan Garg, Eric Engestrom, Kenneth Graunke,
 327                                 Jason Ekstrand, Oscar Barenys, Daniel Stone, Matt Turner, Tomeu Vizoso \\
 328                                 \rowcolor{whitesmoke}
 329                                 freedreno & Eduardo Lima Mitev, Hyunjun Ko & Rob
 330                                 Clark, Marek Olšák, Jonathan Marek, Rohan Garg\\
 331                                 \rowcolor{platinum}
 332                                 radeonsi & The feature was implemented by
 333                                 AMD a few years ago and we are mostly working on fixes (WIP).
 334                                 & feedback from: Bas Nieuwenhuizen, Marek Olšák \\
 335                                 \rowcolor{whitesmoke}
 336                                 i965 & Rohan Garg, Juan A. Suárez Romero, Tapani Pälli
 337                                 & Tomeu Vizoso, Eleni Maria Stea, Oscar Barenys \\
 338                                 \hline
 339                         \end{tabularx}
 340                 \end{table}
 341         }
 342
 343         \tiny{
 344                 \begin{itemize}
 345                         \item {The information above was accurate at the beginning of
 346                                 September when I pre-recorded this presentation! Apologies if
 347                                 I've not included someone or something!}
 348                 \end{itemize}
 349         }
 350 \end{frame}
 351
 352 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 353
 354 \begin{frame}[fragile]
 355         \frametitle{Additions to Piglit (the details) I}
 356
 357         \begin{center}
 358                 \normalsize{\textbf{\color{coolblack}{Contributions to Piglit I }}}
 359         \end{center}
 360
 361         \tiny{
 362                 \begin{center}\textbf{Reusing color images:}\end{center}
 363                         \vspace{-0.3cm}
 364                 \begin{table}[t]
 365                         \begin{tabularx}{\textwidth}{|l|X|c|l|}
 366                                 \hline
 367                                 \rowcolor{paleaqua}
 368                                 Test name & Description
 369                                 & Output & Status\\
 370                                 \hline
 371                                 \hline
 372                                 \rowcolor{platinum}
 373                                 vk-image-overwrite &
 374                                 \begin{itemize}
 375                                         \vspace{-0.3cm}
 376                                 \itemsep0cm
 377                                         \item[\textbullet] \textbf{\color{coolblack}Vulkan:} allocates images of
 378                                                 different formats and tiling modes
 379                                         \item[\textbullet] \textbf{\color{coolblack}{OpenGL:}} fills them with
 380                                                 green
 381                                         \item[\textbullet] \textbf{\color{coolblack}{Expectation:}} green screen
 382                                 \end{itemize}
 383                                 &
 384                                 \adjustbox{valign=t, margin=1ex, padding=1ex}{\includegraphics[height=1cm]{shots/image_overwrite.png}} & \cellcolor{green}{upstream}\\
 385                                 \hline
 386                                 \rowcolor{whitesmoke}
 387                                 vk-image-display &
 388                                 \begin{itemize}
 389                                         \vspace{-0.3cm}
 390                                 \itemsep0cm
 391                                         \item[\textbullet] \textbf{\color{coolblack}Vulkan:} creates
 392                                                 an image and fills it with colored bars
 393                                         \item[\textbullet] \textbf{\color{coolblack}{OpenGL:}} draws
 394                                                 the image on screen using semaphores to synchronize
 395                                                 access
 396                                         \item[\textbullet] \textbf{\color{coolblack}{Expectation:}}
 397                                                 a stripped image on screen
 398                                 \end{itemize}
 399                                 &
 400                                 \adjustbox{valign=t, margin=1ex,
 401                                 padding=1ex}{\includegraphics[height=1cm]{shots/image_display.png}}
 402                                 & \cellcolor{green}{upstream}\\
 403                                 \hline
 404                                 \rowcolor{platinum}
 405                                 vk-image-display-overwrite &
 406                                 \begin{itemize}
 407                                         \vspace{-0.3cm}
 408                                 \itemsep0cm
 409                                         \item[\textbullet] \textbf{\color{coolblack}Vulkan:} creates
 410                                                 an image and fills it
 411                                         \item[\textbullet] \textbf{\color{coolblack}{OpenGL:}}
 412                                                 overwrites that image with another stripped pattern
 413                                         \item[\textbullet] \textbf{\color{coolblack}Vulkan:}
 414                                                 reads back the contents of the image
 415                                         \item[\textbullet] \textbf{\color{coolblack}{Expectation:}}
 416                                         the modified contents to be read back
 417                                 \end{itemize}
 418                                 &
 419                                 \adjustbox{valign=t, margin=1ex,
 420                                 padding=1ex}{\includegraphics[height=1cm]{shots/image_display_overwrite.png}}
 421                                 & \cellcolor{green}{upstream}\\
 422                                 \hline
 423                         \end{tabularx}
 424                 \end{table}
 425         }
 426 \end{frame}
 427
 428 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 429
 430 \begin{frame}[fragile]
 431         \frametitle{Additions to Piglit (the details) II}
 432
 433         \begin{center}
 434                 \normalsize{\textbf{\color{coolblack}{Contributions to Piglit II }}}
 435         \end{center}
 436
 437         \tiny{
 438                 \begin{center}\textbf{Reusing the depth and stencil buffer:}\end{center}
 439                 \begin{table}[t]
 440                         \begin{tabularx}{\textwidth}{|l|X|c|l|}
 441                                 \hline
 442                                 \rowcolor{paleaqua}
 443                                 Test name & Description
 444                                 & Output & Status\\
 445                                 \hline
 446                                 \hline
 447                                 \rowcolor{platinum}
 448                                 vk-depth-display &
 449                                 \begin{itemize}
 450                                         \vspace{-0.3cm}
 451                                 \itemsep0cm
 452                                         \item[\textbullet] \textbf{\color{coolblack}Vulkan:}
 453                                                 creates a depth buffer pattern
 454                                         \item[\textbullet] \textbf{\color{coolblack}{OpenGL:}}
 455                                                 draws a fullscreen quad at a greater depth
 456                                         \item[\textbullet] \textbf{\color{coolblack}{Expectation:}}
 457                                                 quad partially obscured
 458                                 \end{itemize}
 459                                 &
 460                                 \adjustbox{valign=t, margin=1ex,
 461                                 padding=1ex}{\includegraphics[height=1cm]{shots/depth.png}}
 462                                 & \cellcolor{babypink}{under review}\\
 463                                 \hline
 464                                 \rowcolor{whitesmoke}
 465                                 vk-stencil-display &
 466                                 \begin{itemize}
 467                                         \vspace{-0.3cm}
 468                                 \itemsep0cm
 469                                         \item[\textbullet] \textbf{\color{coolblack}Vulkan:}
 470                                                 creates a pattern in the stencil buffer
 471                                         \item[\textbullet] \textbf{\color{coolblack}{OpenGL:}}
 472                                                 draws a blue fullscreen quad with stencil testing
 473                                         \item[\textbullet] \textbf{\color{coolblack}{Expectation:}}
 474                                                 quad masked by stencil pattern
 475                                 \end{itemize}
 476                                 &
 477                                 \adjustbox{valign=t, margin=1ex,
 478                                 padding=1ex}{\includegraphics[height=1cm]{shots/stencil.png}}
 479                                 & \cellcolor{babypink}{under review}\\
 480                                 \hline
 481                         \end{tabularx}
 482                 \end{table}
 483                 }
 484 \end{frame}
 485
 486 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 487
 488 \begin{frame}[fragile]
 489         \frametitle{Additions to Piglit (the details) III}
 490
 491         \begin{center}
 492                 \normalsize{\textbf{\color{coolblack}{Contributions to Piglit III }}}
 493         \end{center}
 494
 495         \tiny{
 496                 \begin{center}\textbf{Reusing a pixel buffer:}\end{center}
 497
 498                 \begin{table}[tc]
 499                         \begin{tabularx}{\textwidth}{|l|X|c|l|}
 500                                 \hline
 501                                 \rowcolor{paleaqua}
 502                                 Test name & Description
 503                                 & Output & Status\\
 504                                 \hline
 505                                 \hline
 506                                 \rowcolor{platinum}
 507                                 vk-buf-exchange &
 508                                 \begin{itemize}
 509                                         \vspace{-0.3cm}
 510                                 \itemsep0cm
 511                                         \item[\textbullet] \textbf{\color{coolblack}Vulkan:}
 512                                                 creates and fills an image with color bars and copies
 513                                                 its content to a buffer
 514                                         \item[\textbullet] \textbf{\color{coolblack}{OpenGL:}}
 515                                                 uses the buffer as pixel storage for a texture and
 516                                                 displays it
 517                                         \item[\textbullet] \textbf{\color{coolblack}{Expectation:}}
 518                                                 colored bars on screen
 519                                 \end{itemize}
 520                                 &
 521                                 \adjustbox{valign=t, margin=1ex,
 522                                 padding=1ex}{\includegraphics[height=1cm]{shots/image_display.png}}
 523                                 & \cellcolor{green}{upstream}\\
 524                                 \hline
 525                                 \rowcolor{whitesmoke}
 526                                 vk-pix-buf-update-errors &
 527                                 Same as above and:
 528                                 \begin{itemize}
 529                                 \itemsep0cm
 530                                         \item[\textbullet] \textbf{\color{coolblack}{OpenGL:}}
 531                                                 attempts to overwrite the buffer
 532                                         \item[\textbullet] \textbf{\color{coolblack}{Expectation:}}
 533                                                 error is generated, the buffer remains unchanged
 534                                 \end{itemize}
 535                                  &
 536                                 \adjustbox{valign=t, margin=1ex,
 537                                 padding=1ex}{\includegraphics[height=1cm]{shots/image_display.png}}
 538                                 & \cellcolor{blond}{work in progress}\\
 539                                 \hline
 540                         \end{tabularx}
 541                 \end{table}
 542         }
 543 \end{frame}
 544
 545 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 546
 547 \begin{frame}[fragile]
 548         \frametitle{Additions to Piglit (the details) IV}
 549
 550         \begin{center}
 551                 \normalsize{\textbf{\color{coolblack}{Contributions to Piglit IV }}}
 552         \end{center}
 553
 554         \tiny{
 555                 \begin{center}\textbf{Reusing a vertex buffer:}\end{center}
 556                 \begin{table}[t]
 557                         \begin{tabularx}{\textwidth}{|l|X|l|l|}
 558                                 \hline
 559                                 \rowcolor{paleaqua}
 560                                 Test name & Description
 561                                 & Output & Status\\
 562                                 \hline
 563                                 \hline
 564                                 \rowcolor{platinum}
 565                                 vk-vert-buf-update-errors &
 566                                 \begin{itemize}
 567                                         \vspace{-0.3cm}
 568                                 \itemsep0cm
 569                                         \item[\textbullet] \textbf{\color{coolblack}Vulkan:}
 570                                                 creates a vertex buffer and fills it with only the odd
 571                                                 quads of a chess board pattern
 572                                         \item[\textbullet] \textbf{\color{coolblack}{OpenGL:}}
 573                                                 clears the screen to red and draws the vertex buffer in
 574                                                 blue
 575                                         \item[\textbullet] \textbf{\color{coolblack}OpenGL:}
 576                                                 attempts to overwrite the VBO
 577                                         \item[\textbullet] \textbf{\color{coolblack}{Expectation:}}
 578                                                 a red-blue chess board pattern on screen and an invalid
 579                                                 operation error is generated
 580                                 \end{itemize}
 581                                 &
 582                                 \adjustbox{valign=t, margin=1ex,
 583                                 padding=1ex}{\includegraphics[height=1cm]{shots/vert_buf_update_errors.png}}
 584                                 & \cellcolor{blond}{work in progress}\\
 585                                 \hline
 586                                 \rowcolor{whitesmoke}
 587                                 vk-vert-buf-reuse &
 588                                 \begin{itemize}
 589                                         \vspace{-0.3cm}
 590                                 \itemsep0cm
 591                                         \item[\textbullet] \textbf{\color{coolblack}Vulkan:}
 592                                                 same as above
 593                                         \item[\textbullet] \textbf{\color{coolblack}{OpenGL:}}
 594                                                 same as above minus the invalid overwrite test
 595                                         \item[\textbullet] \textbf{\color{coolblack}Vulkan:}
 596                                                 reuses the VBO in a renderpass to draw the chess board
 597                                         \item[\textbullet] \textbf{\color{coolblack}{Expectation:}}
 598                                                 chessboard on screen
 599                                 \end{itemize}
 600                                 &
 601                                 \adjustbox{valign=t, margin=1ex,
 602                                 padding=1ex}{\includegraphics[height=1cm]{shots/vert_buf_update_errors.png}}
 603                                 &
 604                                 \cellcolor{blond}{work in progress}\\
 605                                 \hline
 606                         \end{tabularx}
 607                 \end{table}
 608         }
 609 \end{frame}
 610
 611 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 612
 613 \begin{frame}[fragile]
 614         \frametitle{Additions to Piglit (the details) V}
 615         \begin{center}
 616                 \normalsize{\textbf{\color{coolblack}{Contributions to Piglit V }}}\\
 617                 \vspace{0.5cm}
 618                 \scriptsize{Many people helped us with the work on the
 619                 tests:}
 620         \end{center}
 621
 622         \tiny{
 623                 \begin{table}[t]
 624                         \begin{tabularx}{\textwidth}{|l|X|}
 625                                 \hline
 626                                 \rowcolor{paleaqua}
 627                                 Contributors & Contributions \\
 628                                 \hline
 629                                 \hline
 630                                 \rowcolor{platinum}
 631                                 Eleni Maria Stea & tests, Vulkan framework code \\
 632                                 \rowcolor{whitesmoke}
 633                                 Juan A. Suárez Romero & contributions to the framework, and
 634                                 vk-image-overwrite, testing \\
 635                                 \rowcolor{platinum}
 636                                 Tapani Pälli (\textit{\color{coolblack}{many thanks!}}) & reviews, testing and patches
 637                                 for the framework \\
 638                                 \rowcolor{whitesmoke}
 639                                 Bas Nieuwenhuizen & framework patch to support dedicated memory \\
 640                                 \rowcolor{platinum}
 641                                 Topi Pohjolainen & we've used some old patches of him as an example
 642                                 at the very beginning\\
 643                                 \hline
 644                         \end{tabularx}
 645                 \end{table}
 646         }
 647
 648         \begin{itemize}
 649                 \item Also thanks to Germán Poo Caamaño who helped tidying up the
 650                         initial mess of the Vulkan framework commits.
 651                 \item Again, this information was accurate when I prepared and
 652                         pre-recorded the slides. Sorry if I am missing someone or something!
 653         \end{itemize}
 654 \end{frame}
 655
 656 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 657
 658 \begin{frame}[fragile]
 659         \frametitle{Piglit Results}
 660         \begin{block}{\begin{center}Conclusions from running the tests:\end{center}}
 661                 \begin{itemize}
 662                                 \vspace{0.5cm}
 663                         \item Most of the new Piglit tests are passing in the mesa drivers
 664                                 mentioned before (iris, freedreno, radeonsi, i965).\\
 665                                 \vspace{0.5cm}
 666                         \item Unfortunately Mesa does not yet support the depth and stencil
 667                                 buffer exchange. The only implementation I 've found that currently
 668                                 supports this feature is the Nvidia proprietary driver.\\
 669                                 \vspace{0.5cm}
 670                         \item radeonsi needs some fixes to better support buffers and
 671                                 optimal tiling (WIP).
 672                                 \vspace{0.5cm}
 673                 \end{itemize}
 674         \end{block}
 675
 676 \end{frame}
 677
 678 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 679
 680 %\begin{frame}[fragile]
 681 %       \frametitle{vk-image-overwrite}
 682 %       \begin{block}{vk-image-overwrite}
 683 %               \lstinline[language=C++, style=CStyle]{glCreateMemoryObjectsEXT(1, gl_mem_obj); }
 684 %       \end{block}
 685 %\end{frame}
 686
 687 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 688 \section[Q \& A]{Questions}
 689 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 690
 691 \begin{frame}
 692         \frametitle{Questions?}
 693         {\fontsize{8}{7}\selectfont
 694         \begin{center}
 695                 \begin{figure}
 696                 \includegraphics[scale=0.04]{data/qmark.png}
 697                 \end{figure}
 698                 \vspace{0.7cm}
 699                 {\large E-mail: {\color{coolblack}estea@igalia.com}}\\
 700                 {\large IRC/Freenode: {\color{coolblack}hikiko}}\\
 701         \end{center}
 702         }
 703 \end{frame}
 704
 705 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 706 \section[References]{References}
 707 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 708 %\setbeamertemplate{bibliography entry title}{}
 709 %\setbeamertemplate{bibliography entry location}{}
 710 %\setbeamertemplate{bibliography entry note}{}
 711 \setbeamerfont{bibliography item}{size=\footnotesize}
 712 \setbeamerfont{bibliography entry author}{size=\footnotesize}
 713 \setbeamerfont{bibliography entry title}{size=\footnotesize}
 714 \setbeamerfont{bibliography entry year}{size=\footnotesize}
 715 \setbeamerfont{bibliography entry note}{size=\footnotesize}
 716
 717 \begin{frame}[allowframebreaks]
 718         \frametitle{Links}
 719         \bibliographystyle{unsrt}
 720         \bibliography{bib/references.bib}
 721         \nocite{*}
 722 \end{frame}
 723
 724 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 725
 726 \begin{frame}[plain]
 727 \begin{minipage}[b][0.6\textheight]{\linewidth}
 728         \begin{picture}(0, 0)
 729                 \put(0, -76){%
 730                         \pgfuseimage{igaliabglight}
 731                         }
 732                         \begin{minipage}[b][0.4\textheight]{\linewidth}
 733                                 \begin{figure}
 734                                         \includegraphics[scale=0.6]{data/mesa.png}
 735                                 \end{figure}
 736                         \end{minipage}
 737                 \put(-200, 0) {
 738                         \hfill \huge{\textbf{\color{coolblack}Thank you!}}\\
 739                         }
 740         \end{picture}
 741 \end{minipage}
 742
 743 \end{frame}
 744 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 745
 746 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 747 \end{document}