| /* |
| * Copyright 2019 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "include/core/SkSurface.h" |
| #include "include/gpu/GrBackendSurface.h" |
| #include "include/gpu/GrContext.h" |
| #include "src/core/SkAutoMalloc.h" |
| #include "tools/sk_app/DawnWindowContext.h" |
| |
| static void PrintDeviceError(const char* message, void*) { |
| printf("Device error: %s\n", message); |
| SkASSERT(false); |
| } |
| |
| namespace sk_app { |
| |
| DawnWindowContext::DawnWindowContext(const DisplayParams& params, |
| dawn::TextureFormat swapChainFormat) |
| : WindowContext(params) |
| , fSwapChainFormat(swapChainFormat) |
| , fInstance(std::make_unique<dawn_native::Instance>()) { |
| } |
| |
| void DawnWindowContext::initializeContext(int width, int height) { |
| fWidth = width; |
| fHeight = height; |
| fDevice = onInitializeContext(); |
| fContext = GrContext::MakeDawn(fDevice, fDisplayParams.fGrContextOptions); |
| |
| if (!fContext) { |
| return; |
| } |
| fSwapChainImplementation = this->createSwapChainImplementation(-1, -1, fDisplayParams); |
| dawn::SwapChainDescriptor swapChainDesc; |
| swapChainDesc.implementation = reinterpret_cast<int64_t>(&fSwapChainImplementation); |
| fSwapChain = fDevice.CreateSwapChain(&swapChainDesc); |
| if (!fSwapChain) { |
| fContext.reset(); |
| return; |
| } |
| fSwapChain.Configure(fSwapChainFormat, dawn::TextureUsageBit::OutputAttachment, width, height); |
| fDevice.SetErrorCallback(PrintDeviceError, 0); |
| } |
| |
| DawnWindowContext::~DawnWindowContext() { |
| } |
| |
| void DawnWindowContext::destroyContext() { |
| if (!fDevice.Get()) { |
| return; |
| } |
| |
| this->onDestroyContext(); |
| |
| fContext.reset(); |
| fDevice = nullptr; |
| } |
| |
| sk_sp<SkSurface> DawnWindowContext::getBackbufferSurface() { |
| GrDawnImageInfo imageInfo; |
| imageInfo.fTexture = fSwapChain.GetNextTexture(); |
| imageInfo.fFormat = fSwapChainFormat; |
| imageInfo.fLevelCount = 1; // FIXME |
| GrBackendTexture backendTexture(fWidth, fHeight, imageInfo); |
| fSurface = SkSurface::MakeFromBackendTextureAsRenderTarget(fContext.get(), |
| backendTexture, |
| this->getRTOrigin(), |
| fDisplayParams.fMSAASampleCount, |
| fDisplayParams.fColorType, |
| fDisplayParams.fColorSpace, |
| &fDisplayParams.fSurfaceProps); |
| return fSurface; |
| } |
| |
| void DawnWindowContext::swapBuffers() { |
| GrBackendRenderTarget backendRT = fSurface->getBackendRenderTarget( |
| SkSurface::kFlushRead_BackendHandleAccess); |
| GrDawnImageInfo imageInfo; |
| SkAssertResult(backendRT.getDawnImageInfo(&imageInfo)); |
| |
| fSwapChain.Present(imageInfo.fTexture); |
| this->onSwapBuffers(); |
| } |
| |
| void DawnWindowContext::resize(int w, int h) { |
| fWidth = w; |
| fHeight = h; |
| fSwapChainImplementation = this->createSwapChainImplementation(w, h, fDisplayParams); |
| dawn::SwapChainDescriptor swapChainDesc; |
| swapChainDesc.implementation = reinterpret_cast<int64_t>(&fSwapChainImplementation); |
| fSwapChain = fDevice.CreateSwapChain(&swapChainDesc); |
| if (!fSwapChain) { |
| fContext.reset(); |
| return; |
| } |
| fSwapChain.Configure(fSwapChainFormat, dawn::TextureUsageBit::OutputAttachment, fWidth, |
| fHeight); |
| } |
| |
| void DawnWindowContext::setDisplayParams(const DisplayParams& params) { |
| fDisplayParams = params; |
| } |
| |
| dawn::Device DawnWindowContext::createDevice(dawn_native::BackendType type) { |
| fInstance->DiscoverDefaultAdapters(); |
| DawnProcTable backendProcs = dawn_native::GetProcs(); |
| dawnSetProcs(&backendProcs); |
| |
| std::vector<dawn_native::Adapter> adapters = fInstance->GetAdapters(); |
| for (dawn_native::Adapter adapter : adapters) { |
| if (adapter.GetBackendType() == type) { |
| return adapter.CreateDevice(); |
| } |
| } |
| return nullptr; |
| } |
| |
| } //namespace sk_app |