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

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• Hash : ab5acbd5
  Author :
  Date : 2019-01-23T13:58:09
  

  Vulkan: implement swapchain resizing
  
  Vulkan allows a swapchain to be created based off of an older swapchain
  that's still presenting, to support seamless window resizing.  The old
  swapchain will remain alive (though no image can be acquired from it)
  and automatically cleaned once no image is being presented from it.
  
  The retired swapchain can be destroyed once all operations on its images
  are completed.  We store the old swapchain next to the serial of
  submission that's used for CPU throttling and defer the destroy call
  until after `finishToSerial` for that serial is called.
  
  Bug: angleproject:2942
  Change-Id: Ic62a5a57b712ffa2b087f5fecde0dc8942194075
  Reviewed-on: https://chromium-review.googlesource.com/c/1435634
  Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
  

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• src/libANGLE/renderer/vulkan/xcb/WindowSurfaceVkXcb.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.
  //
  // WindowSurfaceVkXcb.cpp:
  //    Implements the class methods for WindowSurfaceVkXcb.
  //
  
  #include "libANGLE/renderer/vulkan/xcb/WindowSurfaceVkXcb.h"
  
  #include "libANGLE/renderer/vulkan/RendererVk.h"
  
  namespace rx
  {
  
  WindowSurfaceVkXcb::WindowSurfaceVkXcb(const egl::SurfaceState &surfaceState,
                                         EGLNativeWindowType window,
                                         EGLint width,
                                         EGLint height,
                                         xcb_connection_t *conn)
      : WindowSurfaceVk(surfaceState, window, width, height), mXcbConnection(conn)
  {}
  
  angle::Result WindowSurfaceVkXcb::createSurfaceVk(vk::Context *context, gl::Extents *extentsOut)
  {
      VkXcbSurfaceCreateInfoKHR createInfo = {};
  
      createInfo.sType      = VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR;
      createInfo.flags      = 0;
      createInfo.connection = mXcbConnection;
      createInfo.window     = mNativeWindowType;
      ANGLE_VK_TRY(context, vkCreateXcbSurfaceKHR(context->getRenderer()->getInstance(), &createInfo,
                                                  nullptr, &mSurface));
  
      return getCurrentWindowSize(context, extentsOut);
  }
  
  angle::Result WindowSurfaceVkXcb::getCurrentWindowSize(vk::Context *context,
                                                         gl::Extents *extentsOut)
  {
      xcb_get_geometry_cookie_t cookie = xcb_get_geometry(mXcbConnection, mNativeWindowType);
      xcb_get_geometry_reply_t *reply  = xcb_get_geometry_reply(mXcbConnection, cookie, nullptr);
      ASSERT(reply);
      *extentsOut = gl::Extents(reply->width, reply->height, 0);
      free(reply);
      return angle::Result::Continue;
  }
  
  }  // namespace rx
  

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