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

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• Hash : 475ef575
  Author :
  Date : 2018-06-27T15:54:18
  

  Vulkan: Refactor config generation out of platform specific code.
  
  Permuatations of configs are now generated in platform-independent code and
  a DisplayVk callback is used to determine native support.
  
  BUG=angleproject:2692
  
  Change-Id: Iad450c1a3275239d6bcbc350e8dd8e37470fa8e0
  Reviewed-on: https://chromium-review.googlesource.com/1117563
  Reviewed-by: Luc Ferron <lucferron@chromium.org>
  Commit-Queue: 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/vk_caps_utils.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::EglNotInitialized();
      }
      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);
  }
  
  egl::ConfigSet DisplayVkXcb::generateConfigs()
  {
      constexpr GLenum kColorFormats[]        = {GL_BGRA8_EXT};
      constexpr GLenum kDepthStencilFormats[] = {GL_NONE, GL_DEPTH24_STENCIL8};
      constexpr EGLint kSampleCounts[]        = {0};
      return egl_vk::GenerateConfigs(kColorFormats, kDepthStencilFormats, kSampleCounts, this);
  }
  
  bool DisplayVkXcb::checkConfigSupport(egl::Config *config)
  {
      // TODO(geofflang): Test for native support and modify the config accordingly.
      // anglebug.com/2692
      return true;
  }
  
  const char *DisplayVkXcb::getWSIName() const
  {
      return VK_KHR_XCB_SURFACE_EXTENSION_NAME;
  }
  
  }  // namespace rx
  

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