kc3-lang/angle/src/libANGLE/renderer/vulkan/headless/DisplayVkHeadless.cpp

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• Hash : 1f344d60
  Author :
  Date : 2020-11-05T16:33:42
  

  Vulkan: Add support for headless surface
  
  How to enable:
  add below args config to args.gn in linux build
  
  ```
  use_x11=false
  use_ozone=false
  angle_vulkan_display_mode="headless"
  ```
  
  Bug: angleproject:5260
  Change-Id: Iec931e74c061b56376ef028814859aa58af07f2f
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2536518
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/libANGLE/renderer/vulkan/headless/DisplayVkHeadless.cpp

• //
  // Copyright 2020 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.
  //
  // DisplayVkHeadless.cpp:
  //    Implements the class methods for DisplayVkHeadless.
  //
  
  #include "DisplayVkHeadless.h"
  #include "WindowSurfaceVkHeadless.h"
  
  #include "libANGLE/Display.h"
  #include "libANGLE/renderer/vulkan/RendererVk.h"
  #include "libANGLE/renderer/vulkan/vk_caps_utils.h"
  
  namespace rx
  {
  
  DisplayVkHeadless::DisplayVkHeadless(const egl::DisplayState &state) : DisplayVk(state) {}
  
  void DisplayVkHeadless::terminate()
  {
      DisplayVk::terminate();
  }
  
  bool DisplayVkHeadless::isValidNativeWindow(EGLNativeWindowType window) const
  {
      return true;
  }
  
  SurfaceImpl *DisplayVkHeadless::createWindowSurfaceVk(const egl::SurfaceState &state,
                                                        EGLNativeWindowType window)
  {
      return new WindowSurfaceVkHeadless(state, window);
  }
  
  egl::ConfigSet DisplayVkHeadless::generateConfigs()
  {
      constexpr GLenum kColorFormats[] = {GL_RGBA8, GL_BGRA8_EXT, GL_RGB565, GL_RGB8};
  
      return egl_vk::GenerateConfigs(kColorFormats, egl_vk::kConfigDepthStencilFormats, this);
  }
  
  void DisplayVkHeadless::checkConfigSupport(egl::Config *config) {}
  
  const char *DisplayVkHeadless::getWSIExtension() const
  {
      return VK_EXT_HEADLESS_SURFACE_EXTENSION_NAME;
  }
  
  bool IsVulkanHeadlessDisplayAvailable()
  {
      return true;
  }
  
  DisplayImpl *CreateVulkanHeadlessDisplay(const egl::DisplayState &state)
  {
      return new DisplayVkHeadless(state);
  }
  
  }  // namespace rx
  

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