android_surface_vulkan_impeller.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 "flutter/shell/platform/android/android_surface_vulkan_impeller.h"
 
#include <memory>
#include <utility>
 
#include "flutter/fml/concurrent_message_loop.h"
#include "flutter/fml/logging.h"
#include "flutter/fml/memory/ref_ptr.h"
#include "flutter/impeller/renderer/backend/vulkan/context_vk.h"
#include "flutter/impeller/renderer/backend/vulkan/swapchain/swapchain_vk.h"
#include "flutter/shell/gpu/gpu_surface_vulkan_impeller.h"
#include "flutter/vulkan/vulkan_native_surface_android.h"
 
namespace flutter {
 
AndroidSurfaceVulkanImpeller::AndroidSurfaceVulkanImpeller(
    const std::shared_ptr<AndroidContextVulkanImpeller>& android_context) {
  is_valid_ = android_context->IsValid();
 
  auto& context_vk =
      impeller::ContextVK::Cast(*android_context->GetImpellerContext());
  surface_context_vk_ = context_vk.CreateSurfaceContext();
  eager_gpu_surface_ =
      std::make_unique<GPUSurfaceVulkanImpeller>(surface_context_vk_);
}
 
AndroidSurfaceVulkanImpeller::~AndroidSurfaceVulkanImpeller() = default;
 
bool AndroidSurfaceVulkanImpeller::IsValid() const {
  return is_valid_;
}
 
void AndroidSurfaceVulkanImpeller::TeardownOnScreenContext() {
  // Nothing to do.
}
 
std::unique_ptr<Surface> AndroidSurfaceVulkanImpeller::CreateGPUSurface(
    GrDirectContext* gr_context) {
  if (!IsValid()) {
    return nullptr;
  }
 
  if (!native_window_ || !native_window_->IsValid()) {
    return nullptr;
  }
 
  if (eager_gpu_surface_) {
    auto gpu_surface = std::move(eager_gpu_surface_);
    if (!gpu_surface->IsValid()) {
      return nullptr;
    }
    return gpu_surface;
  }
 
  std::unique_ptr<GPUSurfaceVulkanImpeller> gpu_surface =
      std::make_unique<GPUSurfaceVulkanImpeller>(surface_context_vk_);
 
  if (!gpu_surface->IsValid()) {
    return nullptr;
  }
 
  return gpu_surface;
}
 
bool AndroidSurfaceVulkanImpeller::OnScreenSurfaceResize(const SkISize& size) {
  surface_context_vk_->UpdateSurfaceSize(
      impeller::ISize{size.width(), size.height()});
  return true;
}
 
bool AndroidSurfaceVulkanImpeller::ResourceContextMakeCurrent() {
  return true;
}
 
bool AndroidSurfaceVulkanImpeller::ResourceContextClearCurrent() {
  return true;
}
 
bool AndroidSurfaceVulkanImpeller::SetNativeWindow(
    fml::RefPtr<AndroidNativeWindow> window) {
  if (window && (native_window_ == window)) {
    return OnScreenSurfaceResize(window->GetSize());
  }
 
  native_window_ = nullptr;
 
  if (!window || !window->IsValid()) {
    return false;
  }
 
  auto swapchain = impeller::SwapchainVK::Create(
      std::reinterpret_pointer_cast<impeller::Context>(
          surface_context_vk_->GetParent()),
      window->handle());
 
  if (surface_context_vk_->SetSwapchain(std::move(swapchain))) {
    native_window_ = std::move(window);
    return true;
  }
 
  return false;
}
 
std::shared_ptr<impeller::Context>
AndroidSurfaceVulkanImpeller::GetImpellerContext() {
  return surface_context_vk_;
}
 
}  // namespace flutter