kc3-lang/angle/src/tests/test_utils/MultiThreadSteps.cpp

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• Hash : e6ac77d9
  Author :
  Date : 2023-02-27T16:13:29
  

  Tests: Enable RunLockStepThreads OpenGL/GLES backend support.
  
  Added "EGL_CONTEXT_VIRTUALIZATION_GROUP_ANGLE" attribute if display
  has "EGL_ANGLE_context_virtualization" extension enabled.
  
  Bug: angleproject:8032
  Change-Id: I482475950b9d8d63891c74fc832cc13d93921e21
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4291436
  Reviewed-by: Charlie Lao <cclao@google.com>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Commit-Queue: Igor Nazarov <i.nazarov@samsung.com>
  

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• src/tests/test_utils/MultiThreadSteps.cpp

• //
  // Copyright 2022 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  // MultiThreadSteps.cpp:
  //   Synchronization help for tests that use multiple threads.
  
  #include "MultiThreadSteps.h"
  
  #include "angle_test_platform.h"
  #include "gtest/gtest.h"
  #include "util/EGLWindow.h"
  
  namespace angle
  {
  
  void RunLockStepThreads(EGLWindow *window, size_t threadCount, LockStepThreadFunc threadFuncs[])
  {
      EGLDisplay dpy   = window->getDisplay();
      EGLConfig config = window->getConfig();
  
      constexpr EGLint kPBufferSize = 256;
      // Initialize the pbuffer and context
      EGLint pbufferAttributes[] = {
          EGL_WIDTH, kPBufferSize, EGL_HEIGHT, kPBufferSize, EGL_NONE, EGL_NONE,
      };
  
      std::vector<EGLSurface> surfaces(threadCount);
      std::vector<EGLContext> contexts(threadCount);
  
      // Create N surfaces and shared contexts, one for each thread
      for (size_t threadIndex = 0; threadIndex < threadCount; ++threadIndex)
      {
          surfaces[threadIndex] = eglCreatePbufferSurface(dpy, config, pbufferAttributes);
          EXPECT_EQ(eglGetError(), EGL_SUCCESS);
          EGLint extraAttributes[] = {EGL_CONTEXT_VIRTUALIZATION_GROUP_ANGLE,
                                      static_cast<EGLint>(threadIndex), EGL_NONE};
          if (!IsEGLDisplayExtensionEnabled(dpy, "EGL_ANGLE_context_virtualization"))
          {
              extraAttributes[0] = EGL_NONE;
          }
          contexts[threadIndex] =
              window->createContext(threadIndex == 0 ? EGL_NO_CONTEXT : contexts[0], extraAttributes);
          EXPECT_NE(EGL_NO_CONTEXT, contexts[threadIndex]) << threadIndex;
      }
  
      std::vector<std::thread> threads(threadCount);
  
      // Run the threads
      for (size_t threadIndex = 0; threadIndex < threadCount; ++threadIndex)
      {
          threads[threadIndex] = std::thread(std::move(threadFuncs[threadIndex]), dpy,
                                             surfaces[threadIndex], contexts[threadIndex]);
      }
  
      // Wait for them to finish
      for (size_t threadIndex = 0; threadIndex < threadCount; ++threadIndex)
      {
          threads[threadIndex].join();
  
          // Clean up
          eglDestroySurface(dpy, surfaces[threadIndex]);
          eglDestroyContext(dpy, contexts[threadIndex]);
      }
  }
  }  // namespace angle
  

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