| /* |
| * Copyright 2022 Google LLC |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "tools/sk_app/GraphiteDawnWindowContext.h" |
| #include "tools/sk_app/mac/WindowContextFactory_mac.h" |
| |
| #import <Cocoa/Cocoa.h> |
| #import <QuartzCore/CAConstraintLayoutManager.h> |
| #import <QuartzCore/CAMetalLayer.h> |
| |
| using sk_app::DisplayParams; |
| using sk_app::window_context_factory::MacWindowInfo; |
| using sk_app::GraphiteDawnWindowContext; |
| |
| namespace { |
| |
| class GraphiteDawnMetalWindowContext_mac : public GraphiteDawnWindowContext { |
| public: |
| GraphiteDawnMetalWindowContext_mac(const MacWindowInfo&, const DisplayParams&); |
| |
| ~GraphiteDawnMetalWindowContext_mac() override; |
| |
| bool onInitializeContext() override; |
| void onDestroyContext() override; |
| void onSwapBuffers() override; |
| void resize(int w, int h) override; |
| |
| private: |
| bool resizeInternal(); |
| |
| NSView* fMainView; |
| CAMetalLayer* fMetalLayer; |
| |
| using INHERITED = GraphiteDawnWindowContext; |
| }; |
| |
| GraphiteDawnMetalWindowContext_mac::GraphiteDawnMetalWindowContext_mac(const MacWindowInfo& info, |
| const DisplayParams& params) |
| : INHERITED(params, wgpu::TextureFormat::BGRA8Unorm) |
| , fMainView(info.fMainView) { |
| |
| CGFloat backingScaleFactor = sk_app::GetBackingScaleFactor(fMainView); |
| CGSize backingSize = fMainView.bounds.size; |
| this->initializeContext(backingSize.width * backingScaleFactor, |
| backingSize.height * backingScaleFactor); |
| } |
| |
| GraphiteDawnMetalWindowContext_mac::~GraphiteDawnMetalWindowContext_mac() { |
| this->destroyContext(); |
| } |
| |
| bool GraphiteDawnMetalWindowContext_mac::onInitializeContext() { |
| SkASSERT(nil != fMainView); |
| |
| auto device = createDevice(wgpu::BackendType::Metal); |
| if (!device) { |
| SkASSERT(device); |
| return false; |
| } |
| |
| // Create a CAMetalLayer that covers the whole window that will be passed to |
| // CreateSurface. |
| fMetalLayer = [CAMetalLayer layer]; |
| fMainView.wantsLayer = YES; |
| fMainView.layer = fMetalLayer; |
| |
| // Adjust fMetalLayer size based on window size. |
| this->resizeInternal(); |
| |
| wgpu::SurfaceDescriptorFromMetalLayer surfaceChainedDesc; |
| surfaceChainedDesc.layer = fMetalLayer; |
| wgpu::SurfaceDescriptor surfaceDesc; |
| surfaceDesc.nextInChain = &surfaceChainedDesc; |
| |
| auto surface = wgpu::Instance(fInstance->Get()).CreateSurface(&surfaceDesc); |
| if (!surface) { |
| SkASSERT(false); |
| return false; |
| } |
| |
| |
| fDevice = std::move(device); |
| fSurface = std::move(surface); |
| fSwapChain = this->createSwapChain(); |
| |
| return true; |
| } |
| |
| void GraphiteDawnMetalWindowContext_mac::onDestroyContext() { |
| fMetalLayer = nil; |
| fMainView.layer = nil; |
| fMainView.wantsLayer = NO; |
| } |
| |
| void GraphiteDawnMetalWindowContext_mac::onSwapBuffers() { |
| } |
| |
| void GraphiteDawnMetalWindowContext_mac::resize(int w, int h) { |
| if (!this->resizeInternal()) { |
| return; |
| } |
| fSwapChain = this->createSwapChain(); |
| } |
| |
| bool GraphiteDawnMetalWindowContext_mac::resizeInternal() { |
| CGFloat backingScaleFactor = sk_app::GetBackingScaleFactor(fMainView); |
| CGSize backingSize = fMainView.bounds.size; |
| backingSize.width *= backingScaleFactor; |
| backingSize.height *= backingScaleFactor; |
| |
| fMetalLayer.drawableSize = backingSize; |
| fMetalLayer.contentsScale = backingScaleFactor; |
| |
| if (fWidth == backingSize.width && fHeight == backingSize.height) { |
| return false; |
| } |
| |
| fWidth = backingSize.width; |
| fHeight = backingSize.height; |
| return true; |
| } |
| |
| |
| } // anonymous namespace |
| |
| namespace sk_app { |
| namespace window_context_factory { |
| |
| std::unique_ptr<WindowContext> MakeGraphiteDawnMetalForMac(const MacWindowInfo& info, |
| const DisplayParams& params) { |
| std::unique_ptr<WindowContext> ctx(new GraphiteDawnMetalWindowContext_mac(info, params)); |
| if (!ctx->isValid()) { |
| return nullptr; |
| } |
| return ctx; |
| } |
| |
| } // namespace window_context_factory |
| } // namespace sk_app |