kc3-lang/angle/src/libANGLE/renderer/vulkan/xcb/DisplayVkXcb.cpp

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• Hash : 29f148b0
  Author :
  Date : 2016-11-23T21:05:36
  

  Support Vulkan on Linux as well as Windows.
  
  Refactor display and surface classes into Win32 and Linux parts and
  add Linux parts to gn and gyp builds.
  
  BUG=angleproject:1668
  
  Change-Id: I2a7d29c35f4f42fa0035bd97938d3770f3627672
  Reviewed-on: https://chromium-review.googlesource.com/412426
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• src/libANGLE/renderer/vulkan/xcb/DisplayVkXcb.cpp

• //
  // 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.
  //
  // DisplayVkXcb.cpp:
  //    Implements the class methods for DisplayVkXcb.
  //
  
  #include "libANGLE/renderer/vulkan/xcb/DisplayVkXcb.h"
  
  #include <xcb/xcb.h>
  
  #include "libANGLE/renderer/vulkan/xcb/WindowSurfaceVkXcb.h"
  
  namespace rx
  {
  
  DisplayVkXcb::DisplayVkXcb(const egl::DisplayState &state)
      : DisplayVk(state), mXcbConnection(nullptr)
  {
  }
  
  egl::Error DisplayVkXcb::initialize(egl::Display *display)
  {
      mXcbConnection = xcb_connect(nullptr, nullptr);
      if (mXcbConnection == nullptr)
      {
          return egl::Error(EGL_NOT_INITIALIZED);
      }
      return DisplayVk::initialize(display);
  }
  
  void DisplayVkXcb::terminate()
  {
      ASSERT(mXcbConnection != nullptr);
      xcb_disconnect(mXcbConnection);
      mXcbConnection = nullptr;
      DisplayVk::terminate();
  }
  
  bool DisplayVkXcb::isValidNativeWindow(EGLNativeWindowType window) const
  {
      // There doesn't appear to be an xcb function explicitly for checking the validity of a
      // window ID, but xcb_query_tree_reply will return nullptr if the window doesn't exist.
      xcb_query_tree_cookie_t cookie = xcb_query_tree(mXcbConnection, window);
      xcb_query_tree_reply_t *reply  = xcb_query_tree_reply(mXcbConnection, cookie, nullptr);
      if (reply)
      {
          free(reply);
          return true;
      }
      return false;
  }
  
  SurfaceImpl *DisplayVkXcb::createWindowSurfaceVk(const egl::SurfaceState &state,
                                                   EGLNativeWindowType window,
                                                   EGLint width,
                                                   EGLint height)
  {
      return new WindowSurfaceVkXcb(state, window, width, height, mXcbConnection);
  }
  
  const char *DisplayVkXcb::getWSIName() const
  {
      return VK_KHR_XCB_SURFACE_EXTENSION_NAME;
  }
  
  }  // namespace rx
  

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