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

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• Hash : d2a6b2a0
  Author :
  Date : 2023-08-04T14:15:11
  

  Use offscreen DisplayVk on ChromeOS
  
  Currently, we always use DisplayVkHeadless on ChromeOS which can
  fail if the drivers do not support VK_EXT_headless_surface (like on
  Intel). At the end of the day, CrOS never really uses Vulkan WSI, so
  it shouldn't need a WSI extension anyways.
  
  This CL introduces a simple DisplayVkOffscreen that requires no WSI.
  We then configure CrOS to use this new DisplayVk.
  
  Bug: b/292249282
  Change-Id: I1fcbb48d187eb656c6e03bc7ac7b15ac8ad0a4ae
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4752416
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  Commit-Queue: Brian Ho <hob@chromium.org>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/libANGLE/renderer/vulkan/linux/DisplayVkOffscreen.cpp

• //
  // Copyright 2023 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.
  //
  // DisplayVkOffscreen.cpp:
  //    Implements the class methods for DisplayVkOffscreen.
  //
  
  #include "DisplayVkOffscreen.h"
  
  #include "common/debug.h"
  #include "libANGLE/renderer/vulkan/vk_caps_utils.h"
  
  namespace rx
  {
  
  DisplayVkOffscreen::DisplayVkOffscreen(const egl::DisplayState &state) : DisplayVkLinux(state) {}
  
  bool DisplayVkOffscreen::isValidNativeWindow(EGLNativeWindowType window) const
  {
      return false;
  }
  
  bool DisplayVkOffscreen::isUsingSwapchain() const
  {
      return false;
  }
  
  SurfaceImpl *DisplayVkOffscreen::createWindowSurfaceVk(const egl::SurfaceState &state,
                                                         EGLNativeWindowType window)
  {
      UNREACHABLE();
      return nullptr;
  }
  
  egl::ConfigSet DisplayVkOffscreen::generateConfigs()
  {
      constexpr GLenum kColorFormats[] = {GL_RGBA8, GL_BGRA8_EXT, GL_RGB565, GL_RGB8};
  
      return egl_vk::GenerateConfigs(kColorFormats, egl_vk::kConfigDepthStencilFormats, this);
  }
  
  void DisplayVkOffscreen::checkConfigSupport(egl::Config *config) {}
  
  const char *DisplayVkOffscreen::getWSIExtension() const
  {
      return nullptr;
  }
  
  bool IsVulkanOffscreenDisplayAvailable()
  {
      return true;
  }
  
  DisplayImpl *CreateVulkanOffscreenDisplay(const egl::DisplayState &state)
  {
      return new DisplayVkOffscreen(state);
  }
  
  }  // namespace rx
  

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