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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.
// FLUTTER_NOLINT: https://github.com/flutter/flutter/issues/68331
#include "vulkan_window.h"
#include <memory>
#include <string>
#include "third_party/skia/include/gpu/GrDirectContext.h"
#include "vulkan_application.h"
#include "vulkan_device.h"
#include "vulkan_native_surface.h"
#include "vulkan_surface.h"
#include "vulkan_swapchain.h"
namespace vulkan {
VulkanWindow::VulkanWindow(fml::RefPtr<VulkanProcTable> proc_table,
std::unique_ptr<VulkanNativeSurface> native_surface,
bool render_to_surface)
: VulkanWindow(/*context/*/ nullptr,
proc_table,
std::move(native_surface),
render_to_surface) {}
VulkanWindow::VulkanWindow(const sk_sp<GrDirectContext>& context,
fml::RefPtr<VulkanProcTable> proc_table,
std::unique_ptr<VulkanNativeSurface> native_surface,
bool render_to_surface)
: valid_(false), vk(std::move(proc_table)), skia_gr_context_(context) {
if (!vk || !vk->HasAcquiredMandatoryProcAddresses()) {
FML_DLOG(INFO) << "Proc table has not acquired mandatory proc addresses.";
return;
}
if (native_surface == nullptr || !native_surface->IsValid()) {
FML_DLOG(INFO) << "Native surface is invalid.";
return;
}
// Create the application instance.
std::vector<std::string> extensions = {
VK_KHR_SURFACE_EXTENSION_NAME, // parent extension
native_surface->GetExtensionName() // child extension
};
application_ = std::make_unique<VulkanApplication>(*vk, "Flutter",
std::move(extensions));
if (!application_->IsValid() || !vk->AreInstanceProcsSetup()) {
// Make certain the application instance was created and it set up the
// instance proc table entries.
FML_DLOG(INFO) << "Instance proc addresses have not been set up.";
return;
}
// Create the device.
logical_device_ = application_->AcquireFirstCompatibleLogicalDevice();
if (logical_device_ == nullptr || !logical_device_->IsValid() ||
!vk->AreDeviceProcsSetup()) {
// Make certain the device was created and it set up the device proc table
// entries.
FML_DLOG(INFO) << "Device proc addresses have not been set up.";
return;
}
// TODO(38466): Refactor GPU surface APIs take into account the fact that an
// external view embedder may want to render to the root surface.
if (!render_to_surface) {
return;
}
// Create the logical surface from the native platform surface.
surface_ = std::make_unique<VulkanSurface>(*vk, *application_,
std::move(native_surface));
if (!surface_->IsValid()) {
FML_DLOG(INFO) << "Vulkan surface is invalid.";
return;
}
// Create the Skia GrDirectContext.
if (!skia_gr_context_ && !CreateSkiaGrContext()) {
FML_DLOG(INFO) << "Could not create Skia context.";
return;
}
// Create the swapchain.
if (!RecreateSwapchain()) {
FML_DLOG(INFO) << "Could not set up the swapchain initially.";
return;
}
valid_ = true;
}
VulkanWindow::~VulkanWindow() = default;
bool VulkanWindow::IsValid() const {
return valid_;
}
GrDirectContext* VulkanWindow::GetSkiaGrContext() {
return skia_gr_context_.get();
}
bool VulkanWindow::CreateSkiaGrContext() {
GrVkBackendContext backend_context;
if (!CreateSkiaBackendContext(&backend_context)) {
return false;
}
sk_sp<GrDirectContext> context = GrDirectContext::MakeVulkan(backend_context);
if (context == nullptr) {
return false;
}
context->setResourceCacheLimits(kGrCacheMaxCount, kGrCacheMaxByteSize);
skia_gr_context_ = context;
return true;
}
bool VulkanWindow::CreateSkiaBackendContext(GrVkBackendContext* context) {
auto getProc = vk->CreateSkiaGetProc();
if (getProc == nullptr) {
return false;
}
uint32_t skia_features = 0;
if (!logical_device_->GetPhysicalDeviceFeaturesSkia(&skia_features)) {
return false;
}
context->fInstance = application_->GetInstance();
context->fPhysicalDevice = logical_device_->GetPhysicalDeviceHandle();
context->fDevice = logical_device_->GetHandle();
context->fQueue = logical_device_->GetQueueHandle();
context->fGraphicsQueueIndex = logical_device_->GetGraphicsQueueIndex();
context->fMinAPIVersion = application_->GetAPIVersion();
context->fExtensions = kKHR_surface_GrVkExtensionFlag |
kKHR_swapchain_GrVkExtensionFlag |
surface_->GetNativeSurface().GetSkiaExtensionName();
context->fFeatures = skia_features;
context->fGetProc = std::move(getProc);
context->fOwnsInstanceAndDevice = false;
return true;
}
sk_sp<SkSurface> VulkanWindow::AcquireSurface() {
if (!IsValid()) {
FML_DLOG(INFO) << "Surface is invalid.";
return nullptr;
}
auto surface_size = surface_->GetSize();
// This check is theoretically unnecessary as the swapchain should report that
// the surface is out-of-date and perform swapchain recreation at the new
// configuration. However, on Android, the swapchain never reports that it is
// of date. Hence this extra check. Platforms that don't have this issue, or,
// cant report this information (which is optional anyway), report a zero
// size.
if (surface_size != SkISize::Make(0, 0) &&
surface_size != swapchain_->GetSize()) {
FML_DLOG(INFO) << "Swapchain and surface sizes are out of sync. Recreating "
"swapchain.";
if (!RecreateSwapchain()) {
FML_DLOG(INFO) << "Could not recreate swapchain.";
valid_ = false;
return nullptr;
}
}
while (true) {
sk_sp<SkSurface> surface;
auto acquire_result = VulkanSwapchain::AcquireStatus::ErrorSurfaceLost;
std::tie(acquire_result, surface) = swapchain_->AcquireSurface();
if (acquire_result == VulkanSwapchain::AcquireStatus::Success) {
// Successfully acquired a surface from the swapchain. Nothing more to do.
return surface;
}
if (acquire_result == VulkanSwapchain::AcquireStatus::ErrorSurfaceLost) {
// Surface is lost. This is an unrecoverable error.
FML_DLOG(INFO) << "Swapchain reported surface was lost.";
return nullptr;
}
if (acquire_result ==
VulkanSwapchain::AcquireStatus::ErrorSurfaceOutOfDate) {
// Surface out of date. Recreate the swapchain at the new configuration.
if (RecreateSwapchain()) {
// Swapchain was recreated, try surface acquisition again.
continue;
} else {
// Could not recreate the swapchain at the new configuration.
FML_DLOG(INFO) << "Swapchain reported surface was out of date but "
"could not recreate the swapchain at the new "
"configuration.";
valid_ = false;
return nullptr;
}
}
break;
}
FML_DCHECK(false) << "Unhandled VulkanSwapchain::AcquireResult";
return nullptr;
}
bool VulkanWindow::SwapBuffers() {
if (!IsValid()) {
FML_DLOG(INFO) << "Window was invalid.";
return false;
}
return swapchain_->Submit();
}
bool VulkanWindow::RecreateSwapchain() {
// This way, we always lose our reference to the old swapchain. Even if we
// cannot create a new one to replace it.
auto old_swapchain = std::move(swapchain_);
if (!vk->IsValid()) {
return false;
}
if (logical_device_ == nullptr || !logical_device_->IsValid()) {
return false;
}
if (surface_ == nullptr || !surface_->IsValid()) {
return false;
}
if (skia_gr_context_ == nullptr) {
return false;
}
auto swapchain = std::make_unique<VulkanSwapchain>(
*vk, *logical_device_, *surface_, skia_gr_context_.get(),
std::move(old_swapchain), logical_device_->GetGraphicsQueueIndex());
if (!swapchain->IsValid()) {
return false;
}
swapchain_ = std::move(swapchain);
return true;
}
} // namespace vulkan