vulkan_native_surface_android.cc

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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#include "vulkan_native_surface_android.h"
 
#include <android/native_window.h>
 
#include "third_party/skia/include/gpu/vk/GrVkBackendContext.h"
 
namespace vulkan {
 
VulkanNativeSurfaceAndroid::VulkanNativeSurfaceAndroid(
    ANativeWindow* native_window)
    : native_window_(native_window) {
  if (native_window_ == nullptr) {
    return;
  }
  ANativeWindow_acquire(native_window_);
}
 
VulkanNativeSurfaceAndroid::~VulkanNativeSurfaceAndroid() {
  if (native_window_ == nullptr) {
    return;
  }
  ANativeWindow_release(native_window_);
}
 
const char* VulkanNativeSurfaceAndroid::GetExtensionName() const {
  // https://registry.khronos.org/vulkan/specs/1.3-extensions/man/html/VK_KHR_android_surface.html
  return VK_KHR_ANDROID_SURFACE_EXTENSION_NAME;
}
 
VkSurfaceKHR VulkanNativeSurfaceAndroid::CreateSurfaceHandle(
    VulkanProcTable& vk,
    const VulkanHandle<VkInstance>& instance) const {
  if (!vk.IsValid() || !instance) {
    return VK_NULL_HANDLE;
  }
 
  const VkAndroidSurfaceCreateInfoKHR create_info = {
      .sType = VK_STRUCTURE_TYPE_ANDROID_SURFACE_CREATE_INFO_KHR,
      .pNext = nullptr,
      .flags = 0,
      .window = native_window_,
  };
 
  VkSurfaceKHR surface = VK_NULL_HANDLE;
 
  if (VK_CALL_LOG_ERROR(vk.CreateAndroidSurfaceKHR(
          instance, &create_info, nullptr, &surface)) != VK_SUCCESS) {
    return VK_NULL_HANDLE;
  }
 
  return surface;
}
 
bool VulkanNativeSurfaceAndroid::IsValid() const {
  return native_window_ != nullptr;
}
 
SkISize VulkanNativeSurfaceAndroid::GetSize() const {
  return native_window_ == nullptr
             ? SkISize::Make(0, 0)
             : SkISize::Make(ANativeWindow_getWidth(native_window_),
                             ANativeWindow_getHeight(native_window_));
}
 
}  // namespace vulkan