kc3-lang/angle/src/libANGLE/renderer/vulkan/linux/wayland/DisplayVkWayland.cpp

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• Hash : 25390156
  Author :
  Date : 2025-08-21T00:13:19
  

  Suppress unsafe buffers on a file-by-file basis in src/ [1 of N]
  
  In this CL, we suppress many files but stop short of actually
  enabling the warning by not removing the line from the
  unsafe_buffers_paths.txt file. That will happen in a follow-on
  CL, along with resolving any stragglers missed here.
  
  This is mostly a manual change so as to familiarize myself with
  the kinds of issues faced by the Angle codebase when applying buffer
  safety warnings.
  
  -- Re-generate affected hashes.
  -- Clang-format applied to all changed files.
  -- Add a few missing .reserve() calls to vectors as noticed.
  -- Fix some mismatches between file names and header comments.
  -- Be more consistent with header comment format (blank lines and
     trailing //-only lines when a filename comment adjoins license
     boilerplate).
  
  Bug: b/436880895
  Change-Id: I3bde5cc2059acbe8345057289214f1a26f1c34aa
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6869022
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/libANGLE/renderer/vulkan/linux/wayland/DisplayVkWayland.cpp

• //
  // Copyright 2021-2022 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.
  //
  // DisplayVkWayland.cpp:
  //    Implements the class methods for DisplayVkWayland.
  //
  
  #ifdef UNSAFE_BUFFERS_BUILD
  #    pragma allow_unsafe_buffers
  #endif
  
  #include "libANGLE/renderer/vulkan/linux/wayland/DisplayVkWayland.h"
  
  #include <wayland-client.h>
  
  #include "common/angleutils.h"
  #include "common/linux/dma_buf_utils.h"
  #include "common/system_utils.h"
  #include "libANGLE/Display.h"
  #include "libANGLE/renderer/vulkan/linux/wayland/WindowSurfaceVkWayland.h"
  #include "libANGLE/renderer/vulkan/vk_caps_utils.h"
  #include "libANGLE/renderer/vulkan/vk_renderer.h"
  
  namespace rx
  {
  
  DisplayVkWayland::DisplayVkWayland(const egl::DisplayState &state)
      : DisplayVkLinux(state), mOwnDisplay(false), mWaylandDisplay(nullptr)
  {}
  
  egl::Error DisplayVkWayland::initialize(egl::Display *display)
  {
      EGLNativeDisplayType nativeDisplay = display->getNativeDisplayId();
      if (nativeDisplay == EGL_DEFAULT_DISPLAY)
      {
          mOwnDisplay     = true;
          mWaylandDisplay = wl_display_connect(nullptr);
      }
      else
      {
          mWaylandDisplay = reinterpret_cast<wl_display *>(nativeDisplay);
      }
  
      if (!mWaylandDisplay)
      {
          ERR() << "Failed to retrieve wayland display";
          return egl::Error(EGL_NOT_INITIALIZED);
      }
  
      egl::Error ret = DisplayVk::initialize(display);
      if (ret.isError())
      {
          return ret;
      }
  
      return ret;
  }
  
  void DisplayVkWayland::terminate()
  {
      if (mOwnDisplay)
      {
          wl_display_disconnect(mWaylandDisplay);
          mOwnDisplay = false;
      }
      mWaylandDisplay = nullptr;
      DisplayVk::terminate();
  }
  
  bool DisplayVkWayland::isValidNativeWindow(EGLNativeWindowType window) const
  {
      // Wayland display Errors are fatal.
      // If this function returns non-zero, the display is not valid anymore.
      int error = wl_display_get_error(mWaylandDisplay);
      if (error)
      {
          WARN() << "Wayland window is not valid: " << error << " " << strerror(error);
      }
      return error == 0;
  }
  
  SurfaceImpl *DisplayVkWayland::createWindowSurfaceVk(const egl::SurfaceState &state,
                                                       EGLNativeWindowType window)
  {
      return new WindowSurfaceVkWayland(state, window, mWaylandDisplay);
  }
  
  egl::ConfigSet DisplayVkWayland::generateConfigs()
  {
      const std::array<GLenum, 1> kColorFormats = {GL_BGRA8_EXT};
  
      std::vector<GLenum> depthStencilFormats(
          egl_vk::kConfigDepthStencilFormats,
          egl_vk::kConfigDepthStencilFormats + ArraySize(egl_vk::kConfigDepthStencilFormats));
  
      if (getCaps().stencil8)
      {
          depthStencilFormats.push_back(GL_STENCIL_INDEX8);
      }
      return egl_vk::GenerateConfigs(kColorFormats.data(), kColorFormats.size(),
                                     depthStencilFormats.data(), depthStencilFormats.size(), this);
  }
  
  void DisplayVkWayland::checkConfigSupport(egl::Config *config)
  {
      // In wayland there is no native visual ID or type
  }
  
  const char *DisplayVkWayland::getWSIExtension() const
  {
      return VK_KHR_WAYLAND_SURFACE_EXTENSION_NAME;
  }
  
  angle::NativeWindowSystem DisplayVkWayland::getWindowSystem() const
  {
      return angle::NativeWindowSystem::Wayland;
  }
  
  bool IsVulkanWaylandDisplayAvailable()
  {
      wl_display *display = wl_display_connect(nullptr);
      if (!display)
      {
          return false;
      }
      wl_display_disconnect(display);
      return true;
  }
  
  DisplayImpl *CreateVulkanWaylandDisplay(const egl::DisplayState &state)
  {
      return new DisplayVkWayland(state);
  }
  
  }  // namespace rx
  

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