| // Copyright 2017 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/metal/SwapChainMTL.h" |
| |
| #include "dawn/native/Surface.h" |
| #include "dawn/native/metal/DeviceMTL.h" |
| #include "dawn/native/metal/TextureMTL.h" |
| |
| #import <QuartzCore/CAMetalLayer.h> |
| |
| namespace dawn::native::metal { |
| |
| // static |
| ResultOrError<Ref<SwapChain>> SwapChain::Create(Device* device, |
| Surface* surface, |
| SwapChainBase* previousSwapChain, |
| const SwapChainDescriptor* descriptor) { |
| Ref<SwapChain> swapchain = AcquireRef(new SwapChain(device, surface, descriptor)); |
| DAWN_TRY(swapchain->Initialize(previousSwapChain)); |
| return swapchain; |
| } |
| |
| SwapChain::SwapChain(DeviceBase* dev, Surface* sur, const SwapChainDescriptor* desc) |
| : SwapChainBase(dev, sur, desc) {} |
| |
| SwapChain::~SwapChain() = default; |
| |
| void SwapChain::DestroyImpl() { |
| SwapChainBase::DestroyImpl(); |
| DetachFromSurface(); |
| } |
| |
| MaybeError SwapChain::Initialize(SwapChainBase* previousSwapChain) { |
| ASSERT(GetSurface()->GetType() == Surface::Type::MetalLayer); |
| |
| if (previousSwapChain != nullptr) { |
| // TODO(crbug.com/dawn/269): figure out what should happen when surfaces are used by |
| // multiple backends one after the other. It probably needs to block until the backend |
| // and GPU are completely finished with the previous swapchain. |
| DAWN_INVALID_IF(previousSwapChain->GetBackendType() != wgpu::BackendType::Metal, |
| "Metal SwapChain cannot switch backend types from %s to %s.", |
| previousSwapChain->GetBackendType(), wgpu::BackendType::Metal); |
| |
| previousSwapChain->DetachFromSurface(); |
| } |
| |
| mLayer = static_cast<CAMetalLayer*>(GetSurface()->GetMetalLayer()); |
| ASSERT(mLayer != nullptr); |
| |
| CGSize size = {}; |
| size.width = GetWidth(); |
| size.height = GetHeight(); |
| [*mLayer setDrawableSize:size]; |
| |
| [*mLayer setFramebufferOnly:(GetUsage() == wgpu::TextureUsage::RenderAttachment)]; |
| [*mLayer setDevice:ToBackend(GetDevice())->GetMTLDevice()]; |
| [*mLayer setPixelFormat:MetalPixelFormat(GetDevice(), GetFormat())]; |
| |
| #if DAWN_PLATFORM_IS(MACOS) |
| [*mLayer setDisplaySyncEnabled:(GetPresentMode() != wgpu::PresentMode::Immediate)]; |
| #endif // DAWN_PLATFORM_IS(MACOS) |
| |
| // There is no way to control Fifo vs. Mailbox in Metal. |
| |
| return {}; |
| } |
| |
| MaybeError SwapChain::PresentImpl() { |
| ASSERT(mCurrentDrawable != nullptr); |
| [*mCurrentDrawable present]; |
| |
| mTexture->APIDestroy(); |
| mTexture = nullptr; |
| |
| mCurrentDrawable = nullptr; |
| |
| return {}; |
| } |
| |
| ResultOrError<Ref<TextureBase>> SwapChain::GetCurrentTextureImpl() { |
| @autoreleasepool { |
| ASSERT(mCurrentDrawable == nullptr); |
| mCurrentDrawable = [*mLayer nextDrawable]; |
| |
| TextureDescriptor textureDesc = GetSwapChainBaseTextureDescriptor(this); |
| |
| mTexture = Texture::CreateWrapping(ToBackend(GetDevice()), &textureDesc, |
| NSPRef<id<MTLTexture>>([*mCurrentDrawable texture])); |
| return mTexture; |
| } |
| } |
| |
| void SwapChain::DetachFromSurfaceImpl() { |
| ASSERT((mTexture == nullptr) == (mCurrentDrawable == nullptr)); |
| |
| if (mTexture != nullptr) { |
| mTexture->APIDestroy(); |
| mTexture = nullptr; |
| |
| mCurrentDrawable = nullptr; |
| } |
| } |
| |
| } // namespace dawn::native::metal |