kc3-lang/angle/src/libANGLE/renderer/vulkan/SyncVk.h

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• Hash : e20f36f4
  Author :
  Date : 2020-04-21T15:45:44
  

  EGL: Implement EGL_ANDROID_native_fence_sync on vulkan
  
  Check the following -
  1. Vulkan ICD supports VK_KHR_external_fence_fd
  2. ExternalFenceProperties and ExternalSemaphoreProperties
     support Android FD.
  
  eglCreateSync - if FD was provided import to VkFence,
                  else create VkFence with new FD and then
                  flush and submit VkFence on next vkQueueSubmit.
  
  eglGetSyncAttrib - for status call vkGetFenceStatus.
  
  eglDupNativeFenceFdANDROID - return FD from vkGetFenceFD call.
  
  eglClientWaitSync - call vkWaitForFences.
  
  eglWaitSync - dup FD, create VkSemaphore and import FD, then
                flush() and add VkSemaphore to next vkQueueSubmit
                as a waiting semaphore.
  
  Extended end2end test suite with nativefence test cases.
  
  Bug: angleproject:2517
  Test: angle_end2end_tests --gtest_filter=EGLSyncTest.AndroidNativeFence_*
  Change-Id: I8f6a6f4c3d71d83007f662b78377aa015a740035
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2026177
  Commit-Queue: Mohan Maiya <m.maiya@samsung.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/vulkan/SyncVk.h

• //
  // Copyright 2016 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.
  //
  // SyncVk:
  //    Defines the class interface for SyncVk, implementing SyncImpl.
  //
  
  #ifndef LIBANGLE_RENDERER_VULKAN_FENCESYNCVK_H_
  #define LIBANGLE_RENDERER_VULKAN_FENCESYNCVK_H_
  
  #include "libANGLE/renderer/EGLSyncImpl.h"
  #include "libANGLE/renderer/SyncImpl.h"
  #include "libANGLE/renderer/vulkan/ResourceVk.h"
  
  namespace egl
  {
  class AttributeMap;
  }
  
  namespace rx
  {
  namespace vk
  {
  
  // Represents an invalid native fence FD.
  constexpr int kInvalidFenceFd = EGL_NO_NATIVE_FENCE_FD_ANDROID;
  
  // Implementation of fence types - glFenceSync, and EGLSync(EGL_SYNC_FENCE_KHR).
  // The behaviors of SyncVk and EGLFenceSyncVk as fence syncs are currently
  // identical for the Vulkan backend, and this class implements both interfaces.
  class SyncHelper : public vk::Resource
  {
    public:
      SyncHelper();
      virtual ~SyncHelper();
  
      virtual void releaseToRenderer(RendererVk *renderer);
  
      virtual angle::Result initialize(ContextVk *contextVk);
      virtual angle::Result clientWait(Context *context,
                                       ContextVk *contextVk,
                                       bool flushCommands,
                                       uint64_t timeout,
                                       VkResult *outResult);
      virtual angle::Result serverWait(ContextVk *contextVk);
      virtual angle::Result getStatus(Context *context, bool *signaled) const;
      virtual angle::Result dupNativeFenceFD(Context *context, int *fdOut) const
      {
          return angle::Result::Stop;
      }
  
    private:
      // The vkEvent that's signaled on `init` and can be waited on in `serverWait`, or queried with
      // `getStatus`.
      Event mEvent;
      // The fence is signaled once the CB including the `init` signal is executed.
      // `clientWait` waits on this fence.
      Shared<Fence> mFence;
  };
  
  // Implementation of sync types: EGLSync(EGL_SYNC_ANDROID_NATIVE_FENCE_ANDROID).
  class SyncHelperNativeFence : public SyncHelper
  {
    public:
      SyncHelperNativeFence() {}
      ~SyncHelperNativeFence() override {}
  
      void releaseToRenderer(RendererVk *renderer) override;
  
      angle::Result initializeWithFd(ContextVk *contextVk, int inFd);
      angle::Result clientWait(Context *context,
                               ContextVk *contextVk,
                               bool flushCommands,
                               uint64_t timeout,
                               VkResult *outResult) override;
      angle::Result serverWait(ContextVk *contextVk) override;
      angle::Result getStatus(Context *context, bool *signaled) const override;
      angle::Result dupNativeFenceFD(Context *context, int *fdOut) const override;
  
    private:
      vk::Fence mFenceWithFd;
  };
  
  }  // namespace vk
  
  // Implementor for glFenceSync.
  class SyncVk final : public SyncImpl
  {
    public:
      SyncVk();
      ~SyncVk() override;
  
      void onDestroy(const gl::Context *context) override;
  
      angle::Result set(const gl::Context *context, GLenum condition, GLbitfield flags) override;
      angle::Result clientWait(const gl::Context *context,
                               GLbitfield flags,
                               GLuint64 timeout,
                               GLenum *outResult) override;
      angle::Result serverWait(const gl::Context *context,
                               GLbitfield flags,
                               GLuint64 timeout) override;
      angle::Result getStatus(const gl::Context *context, GLint *outResult) override;
  
    private:
      vk::SyncHelper mSyncHelper;
  };
  
  // Implementor for EGLSync.
  class EGLSyncVk final : public EGLSyncImpl
  {
    public:
      EGLSyncVk(const egl::AttributeMap &attribs);
      ~EGLSyncVk() override;
  
      void onDestroy(const egl::Display *display) override;
  
      egl::Error initialize(const egl::Display *display,
                            const gl::Context *context,
                            EGLenum type) override;
      egl::Error clientWait(const egl::Display *display,
                            const gl::Context *context,
                            EGLint flags,
                            EGLTime timeout,
                            EGLint *outResult) override;
      egl::Error serverWait(const egl::Display *display,
                            const gl::Context *context,
                            EGLint flags) override;
      egl::Error getStatus(const egl::Display *display, EGLint *outStatus) override;
  
      egl::Error dupNativeFenceFD(const egl::Display *display, EGLint *fdOut) const override;
  
    private:
      EGLenum mType;
      vk::SyncHelper *mSyncHelper;  // SyncHelper or SyncHelperNativeFence decided at run-time.
      const egl::AttributeMap &mAttribs;
  };
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_VULKAN_FENCESYNCVK_H_
  

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