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

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• Hash : e755a537
  Author :
  Date : 2019-04-10T09:58:21
  

  Vulkan: Add a new garbage type gated by fences.
  
  This allows Vulkan EGL objects such as EGL Syncs and EGL Images to give their
  garbage to the renderer before destroying.
  
  BUG=angleproject:2464
  
  Change-Id: I59b8e1080e4292bd0856e59a928750c7e77a372e
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1562522
  Commit-Queue: Geoff Lang <geofflang@chromium.org>
  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/vk_utils.h"
  
  namespace egl
  {
  class AttributeMap;
  }
  
  namespace rx
  {
  // The behaviors of SyncImpl and EGLSyncImpl as fence syncs (only supported type) are currently
  // identical for the Vulkan backend, and this class implements both interfaces.
  class FenceSyncVk
  {
    public:
      FenceSyncVk();
      ~FenceSyncVk();
  
      void onDestroy(RendererVk *renderer);
      void onDestroy(DisplayVk *display);
  
      angle::Result initialize(ContextVk *contextVk);
      angle::Result clientWait(vk::Context *context,
                               ContextVk *contextVk,
                               bool flushCommands,
                               uint64_t timeout,
                               VkResult *outResult);
      angle::Result serverWait(vk::Context *context, ContextVk *contextVk);
      angle::Result getStatus(vk::Context *context, bool *signaled);
  
    private:
      // The vkEvent that's signaled on `init` and can be waited on in `serverWait`, or queried with
      // `getStatus`.
      vk::Event mEvent;
      // The vkFence that's signaled once the command buffer including the `init` signal is executed.
      // `clientWait` waits on this fence.
      vk::Shared<vk::Fence> mFence;
  };
  
  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:
      FenceSyncVk mFenceSync;
  };
  
  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;
  
    private:
      FenceSyncVk mFenceSync;
  };
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_VULKAN_FENCESYNCVK_H_
  

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