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// 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.
#ifndef SRC_DAWN_NATIVE_SURFACE_H_
#define SRC_DAWN_NATIVE_SURFACE_H_
#include "dawn/native/Error.h"
#include "dawn/native/Forward.h"
#include "dawn/native/ObjectBase.h"
#include "dawn/native/dawn_platform.h"
#include "dawn/common/Platform.h"
#if DAWN_PLATFORM_IS(WINDOWS)
#include "dawn/native/d3d/d3d_platform.h"
#endif // DAWN_PLATFORM_IS(WINDOWS)
// Forward declare IUnknown
// GetCoreWindow needs to return an IUnknown pointer
// non-windows platforms don't have this type
struct IUnknown;
namespace dawn::native {
MaybeError ValidateSurfaceDescriptor(const InstanceBase* instance,
const SurfaceDescriptor* descriptor);
// A surface is a sum types of all the kind of windows Dawn supports. The OS-specific types
// aren't used because they would cause compilation errors on other OSes (or require
// ObjectiveC).
// The surface is also used to store the current swapchain so that we can detach it when it is
// replaced.
class Surface final : public ErrorMonad {
public:
static Surface* MakeError(InstanceBase* instance);
Surface(InstanceBase* instance, const SurfaceDescriptor* descriptor);
void SetAttachedSwapChain(SwapChainBase* swapChain);
SwapChainBase* GetAttachedSwapChain();
// These are valid to call on all Surfaces.
enum class Type {
AndroidWindow,
MetalLayer,
WaylandSurface,
WindowsHWND,
WindowsCoreWindow,
WindowsSwapChainPanel,
XlibWindow,
};
Type GetType() const;
InstanceBase* GetInstance() const;
// Valid to call if the type is MetalLayer
void* GetMetalLayer() const;
// Valid to call if the type is Android
void* GetAndroidNativeWindow() const;
// Valid to call if the type is WaylandSurface
void* GetWaylandDisplay() const;
void* GetWaylandSurface() const;
// Valid to call if the type is WindowsHWND
void* GetHInstance() const;
void* GetHWND() const;
// Valid to call if the type is WindowsCoreWindow
IUnknown* GetCoreWindow() const;
// Valid to call if the type is WindowsSwapChainPanel
IUnknown* GetSwapChainPanel() const;
// Valid to call if the type is WindowsXlib
void* GetXDisplay() const;
uint32_t GetXWindow() const;
private:
Surface(InstanceBase* instance, ErrorMonad::ErrorTag tag);
~Surface() override;
Ref<InstanceBase> mInstance;
Type mType;
// The swapchain will set this to null when it is destroyed.
Ref<SwapChainBase> mSwapChain;
// MetalLayer
void* mMetalLayer = nullptr;
// ANativeWindow
void* mAndroidNativeWindow = nullptr;
// Wayland
void* mWaylandDisplay = nullptr;
void* mWaylandSurface = nullptr;
// WindowsHwnd
void* mHInstance = nullptr;
void* mHWND = nullptr;
#if DAWN_PLATFORM_IS(WINDOWS)
// WindowsCoreWindow
ComPtr<IUnknown> mCoreWindow;
// WindowsSwapChainPanel
ComPtr<IUnknown> mSwapChainPanel;
#endif // DAWN_PLATFORM_IS(WINDOWS)
// Xlib
void* mXDisplay = nullptr;
uint32_t mXWindow = 0;
};
// Not defined in webgpu_absl_format.h/cpp because you can't forward-declare a nested type.
absl::FormatConvertResult<absl::FormatConversionCharSet::kString>
AbslFormatConvert(Surface::Type value, const absl::FormatConversionSpec& spec, absl::FormatSink* s);
} // namespace dawn::native
#endif // SRC_DAWN_NATIVE_SURFACE_H_