| // Copyright 2020 the Dawn Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #include "dawn_native/Surface.h" |
| |
| #include "common/Platform.h" |
| #include "dawn_native/ChainUtils_autogen.h" |
| #include "dawn_native/Instance.h" |
| #include "dawn_native/SwapChain.h" |
| |
| #if defined(DAWN_PLATFORM_WINDOWS) |
| # include <windows.ui.core.h> |
| #endif // defined(DAWN_PLATFORM_WINDOWS) |
| |
| #if defined(DAWN_USE_X11) |
| # include "common/xlib_with_undefs.h" |
| #endif // defined(DAWN_USE_X11) |
| |
| namespace dawn_native { |
| |
| #if defined(DAWN_ENABLE_BACKEND_METAL) |
| bool InheritsFromCAMetalLayer(void* obj); |
| #endif // defined(DAWN_ENABLE_BACKEND_METAL) |
| |
| MaybeError ValidateSurfaceDescriptor(const InstanceBase* instance, |
| const SurfaceDescriptor* descriptor) { |
| if (descriptor->nextInChain == nullptr) { |
| return DAWN_VALIDATION_ERROR("Surface cannot be created with just the base descriptor"); |
| } |
| |
| DAWN_TRY(ValidateSingleSType(descriptor->nextInChain, |
| wgpu::SType::SurfaceDescriptorFromMetalLayer, |
| wgpu::SType::SurfaceDescriptorFromWindowsHWND, |
| wgpu::SType::SurfaceDescriptorFromWindowsCoreWindow, |
| wgpu::SType::SurfaceDescriptorFromXlib)); |
| |
| #if defined(DAWN_ENABLE_BACKEND_METAL) |
| const SurfaceDescriptorFromMetalLayer* metalDesc = nullptr; |
| FindInChain(descriptor->nextInChain, &metalDesc); |
| if (!metalDesc) { |
| return DAWN_VALIDATION_ERROR("Unsupported sType"); |
| } |
| // Check that the layer is a CAMetalLayer (or a derived class). |
| if (!InheritsFromCAMetalLayer(metalDesc->layer)) { |
| return DAWN_VALIDATION_ERROR("layer must be a CAMetalLayer"); |
| } |
| #endif // defined(DAWN_ENABLE_BACKEND_METAL) |
| |
| #if defined(DAWN_PLATFORM_WINDOWS) |
| # if defined(DAWN_PLATFORM_WIN32) |
| const SurfaceDescriptorFromWindowsHWND* hwndDesc = nullptr; |
| FindInChain(descriptor->nextInChain, &hwndDesc); |
| if (hwndDesc) { |
| if (IsWindow(static_cast<HWND>(hwndDesc->hwnd)) == 0) { |
| return DAWN_VALIDATION_ERROR("Invalid HWND"); |
| } |
| return {}; |
| } |
| # endif // defined(DAWN_PLATFORM_WIN32) |
| const SurfaceDescriptorFromWindowsCoreWindow* coreWindowDesc = nullptr; |
| FindInChain(descriptor->nextInChain, &coreWindowDesc); |
| if (coreWindowDesc) { |
| // Validate the coreWindow by query for ICoreWindow interface |
| ComPtr<ABI::Windows::UI::Core::ICoreWindow> coreWindow; |
| if (coreWindowDesc->coreWindow == nullptr || |
| FAILED(static_cast<IUnknown*>(coreWindowDesc->coreWindow) |
| ->QueryInterface(IID_PPV_ARGS(&coreWindow)))) { |
| return DAWN_VALIDATION_ERROR("Invalid CoreWindow"); |
| } |
| return {}; |
| } |
| return DAWN_VALIDATION_ERROR("Unsupported sType"); |
| #endif // defined(DAWN_PLATFORM_WINDOWS) |
| |
| #if defined(DAWN_USE_X11) |
| const SurfaceDescriptorFromXlib* xDesc = nullptr; |
| FindInChain(descriptor->nextInChain, &xDesc); |
| if (!xDesc) { |
| return DAWN_VALIDATION_ERROR("Unsupported sType"); |
| } |
| // Check the validity of the window by calling a getter function on the window that |
| // returns a status code. If the window is bad the call return a status of zero. We |
| // need to set a temporary X11 error handler while doing this because the default |
| // X11 error handler exits the program on any error. |
| XErrorHandler oldErrorHandler = |
| XSetErrorHandler([](Display*, XErrorEvent*) { return 0; }); |
| XWindowAttributes attributes; |
| int status = XGetWindowAttributes(reinterpret_cast<Display*>(xDesc->display), |
| xDesc->window, &attributes); |
| XSetErrorHandler(oldErrorHandler); |
| |
| if (status == 0) { |
| return DAWN_VALIDATION_ERROR("Invalid X Window"); |
| } |
| #endif // defined(DAWN_USE_X11) |
| |
| return {}; |
| } |
| |
| Surface::Surface(InstanceBase* instance, const SurfaceDescriptor* descriptor) |
| : mInstance(instance) { |
| ASSERT(descriptor->nextInChain != nullptr); |
| const SurfaceDescriptorFromMetalLayer* metalDesc = nullptr; |
| const SurfaceDescriptorFromWindowsHWND* hwndDesc = nullptr; |
| const SurfaceDescriptorFromWindowsCoreWindow* coreWindowDesc = nullptr; |
| const SurfaceDescriptorFromXlib* xDesc = nullptr; |
| FindInChain(descriptor->nextInChain, &metalDesc); |
| FindInChain(descriptor->nextInChain, &hwndDesc); |
| FindInChain(descriptor->nextInChain, &coreWindowDesc); |
| FindInChain(descriptor->nextInChain, &xDesc); |
| ASSERT(metalDesc || hwndDesc || xDesc); |
| if (metalDesc) { |
| mType = Type::MetalLayer; |
| mMetalLayer = metalDesc->layer; |
| } else if (hwndDesc) { |
| #if defined(DAWN_PLATFORM_WIN32) |
| mType = Type::WindowsHWND; |
| mHInstance = hwndDesc->hinstance; |
| mHWND = hwndDesc->hwnd; |
| #endif // defined(DAWN_PLATFORM_WIN32) |
| } else if (coreWindowDesc) { |
| #if defined(DAWN_PLATFORM_WINDOWS) |
| mType = Type::WindowsCoreWindow; |
| mCoreWindow = static_cast<IUnknown*>(coreWindowDesc->coreWindow); |
| #endif // defined(DAWN_PLATFORM_WINDOWS) |
| } else if (xDesc) { |
| mType = Type::Xlib; |
| mXDisplay = xDesc->display; |
| mXWindow = xDesc->window; |
| } else { |
| UNREACHABLE(); |
| } |
| } |
| |
| Surface::~Surface() { |
| if (mSwapChain != nullptr) { |
| mSwapChain->DetachFromSurface(); |
| mSwapChain = nullptr; |
| } |
| } |
| |
| NewSwapChainBase* Surface::GetAttachedSwapChain() { |
| return mSwapChain.Get(); |
| } |
| |
| void Surface::SetAttachedSwapChain(NewSwapChainBase* swapChain) { |
| mSwapChain = swapChain; |
| } |
| |
| InstanceBase* Surface::GetInstance() { |
| return mInstance.Get(); |
| } |
| |
| Surface::Type Surface::GetType() const { |
| return mType; |
| } |
| |
| void* Surface::GetMetalLayer() const { |
| ASSERT(mType == Type::MetalLayer); |
| return mMetalLayer; |
| } |
| |
| void* Surface::GetHInstance() const { |
| ASSERT(mType == Type::WindowsHWND); |
| return mHInstance; |
| } |
| void* Surface::GetHWND() const { |
| ASSERT(mType == Type::WindowsHWND); |
| return mHWND; |
| } |
| |
| void* Surface::GetCoreWindow() const { |
| ASSERT(mType == Type::WindowsCoreWindow); |
| #if defined(DAWN_PLATFORM_WINDOWS) |
| return mCoreWindow.Get(); |
| #else |
| return nullptr; |
| #endif |
| } |
| |
| void* Surface::GetXDisplay() const { |
| ASSERT(mType == Type::Xlib); |
| return mXDisplay; |
| } |
| uint32_t Surface::GetXWindow() const { |
| ASSERT(mType == Type::Xlib); |
| return mXWindow; |
| } |
| |
| } // namespace dawn_native |