kc3-lang/angle/src/libANGLE/renderer/vulkan/ResourceVk.cpp

• Show log

  Commit

• Hash : 745e0712
  Author :
  Date : 2020-03-21T17:46:05
  

  Vulkan: Enable CPU only buffers for PBOs
  
  Add support for a CPU only buffer for PBOs that serve as
  the destination for all host operations like MapBuffer*.
  This removes the latency caused by waiting for the in-flight
  GPU commands to be complete before handing over the buffer
  to the app.
  
  This change removes a ~6ms wait/sleep on the first call to
  MapBuffer* in each frame of Manhattan
  
  Bug: angleproject:4339
  Tests: angle_end2end_tests --gtest_filter=BufferDataTest*Vulkan
  Change-Id: I52016b160af8a670cc30f01c05e48f699521310f
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2116874
  Commit-Queue: Mohan Maiya <m.maiya@samsung.com>
  Reviewed-by: Tobin Ehlis <tobine@google.com>
  

Download

• src/libANGLE/renderer/vulkan/ResourceVk.cpp

• //
  // Copyright 2017 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.
  //
  // Resource:
  //    Resource lifetime tracking in the Vulkan back-end.
  //
  
  #include "libANGLE/renderer/vulkan/ResourceVk.h"
  
  #include "libANGLE/renderer/vulkan/ContextVk.h"
  
  namespace rx
  {
  namespace vk
  {
  // Resource implementation.
  Resource::Resource()
  {
      mUse.init();
  }
  
  Resource::~Resource()
  {
      mUse.release();
  }
  
  angle::Result Resource::finishRunningCommands(ContextVk *contextVk)
  {
      return contextVk->finishToSerial(mUse.getSerial());
  }
  
  angle::Result Resource::waitForIdle(ContextVk *contextVk)
  {
      // If there are pending commands for the resource, flush them.
      if (usedInRecordedCommands())
      {
          ANGLE_TRY(contextVk->flushImpl(nullptr));
      }
  
      // Make sure the driver is done with the resource.
      if (usedInRunningCommands(contextVk->getLastCompletedQueueSerial()))
      {
          ANGLE_TRY(finishRunningCommands(contextVk));
      }
  
      ASSERT(!isCurrentlyInUse(contextVk->getLastCompletedQueueSerial()));
  
      return angle::Result::Continue;
  }
  
  // SharedGarbage implementation.
  SharedGarbage::SharedGarbage() = default;
  
  SharedGarbage::SharedGarbage(SharedGarbage &&other)
  {
      *this = std::move(other);
  }
  
  SharedGarbage::SharedGarbage(SharedResourceUse &&use, std::vector<GarbageObject> &&garbage)
      : mLifetime(std::move(use)), mGarbage(std::move(garbage))
  {}
  
  SharedGarbage::~SharedGarbage() = default;
  
  SharedGarbage &SharedGarbage::operator=(SharedGarbage &&rhs)
  {
      std::swap(mLifetime, rhs.mLifetime);
      std::swap(mGarbage, rhs.mGarbage);
      return *this;
  }
  
  bool SharedGarbage::destroyIfComplete(RendererVk *renderer, Serial completedSerial)
  {
      if (mLifetime.isCurrentlyInUse(completedSerial))
          return false;
  
      mLifetime.release();
  
      for (GarbageObject &object : mGarbage)
      {
          object.destroy(renderer);
      }
  
      return true;
  }
  
  // ResourceUseList implementation.
  ResourceUseList::ResourceUseList() = default;
  
  ResourceUseList::~ResourceUseList()
  {
      ASSERT(mResourceUses.empty());
  }
  
  void ResourceUseList::releaseResourceUses()
  {
      for (SharedResourceUse &use : mResourceUses)
      {
          use.release();
      }
  
      mResourceUses.clear();
  }
  
  void ResourceUseList::releaseResourceUsesAndUpdateSerials(Serial serial)
  {
      for (SharedResourceUse &use : mResourceUses)
      {
          use.releaseAndUpdateSerial(serial);
      }
  
      mResourceUses.clear();
  }
  }  // namespace vk
  }  // namespace rx
  

Download