1 /*
2 * Copyright 2019 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "include/core/SkSurface.h"
9 #include "include/gpu/GrBackendSurface.h"
10 #include "include/gpu/GrContext.h"
11 #include "src/core/SkAutoMalloc.h"
12 #include "tools/sk_app/DawnWindowContext.h"
13
PrintDeviceError(const char * message,void *)14 static void PrintDeviceError(const char* message, void*) {
15 printf("Device error: %s\n", message);
16 SkASSERT(false);
17 }
18
19 namespace sk_app {
20
DawnWindowContext(const DisplayParams & params,dawn::TextureFormat swapChainFormat)21 DawnWindowContext::DawnWindowContext(const DisplayParams& params,
22 dawn::TextureFormat swapChainFormat)
23 : WindowContext(params)
24 , fSwapChainFormat(swapChainFormat)
25 , fInstance(std::make_unique<dawn_native::Instance>()) {
26 }
27
initializeContext(int width,int height)28 void DawnWindowContext::initializeContext(int width, int height) {
29 fWidth = width;
30 fHeight = height;
31 fDevice = onInitializeContext();
32 fContext = GrContext::MakeDawn(fDevice, fDisplayParams.fGrContextOptions);
33
34 if (!fContext) {
35 return;
36 }
37 fSwapChainImplementation = this->createSwapChainImplementation(-1, -1, fDisplayParams);
38 dawn::SwapChainDescriptor swapChainDesc;
39 swapChainDesc.implementation = reinterpret_cast<int64_t>(&fSwapChainImplementation);
40 fSwapChain = fDevice.CreateSwapChain(&swapChainDesc);
41 if (!fSwapChain) {
42 fContext.reset();
43 return;
44 }
45 fSwapChain.Configure(fSwapChainFormat, dawn::TextureUsageBit::OutputAttachment, width, height);
46 fDevice.SetErrorCallback(PrintDeviceError, 0);
47 }
48
~DawnWindowContext()49 DawnWindowContext::~DawnWindowContext() {
50 }
51
destroyContext()52 void DawnWindowContext::destroyContext() {
53 if (!fDevice.Get()) {
54 return;
55 }
56
57 this->onDestroyContext();
58
59 fContext.reset();
60 fDevice = nullptr;
61 }
62
getBackbufferSurface()63 sk_sp<SkSurface> DawnWindowContext::getBackbufferSurface() {
64 GrDawnImageInfo imageInfo;
65 imageInfo.fTexture = fSwapChain.GetNextTexture();
66 imageInfo.fFormat = fSwapChainFormat;
67 imageInfo.fLevelCount = 1; // FIXME
68 GrBackendTexture backendTexture(fWidth, fHeight, imageInfo);
69 fSurface = SkSurface::MakeFromBackendTextureAsRenderTarget(fContext.get(),
70 backendTexture,
71 this->getRTOrigin(),
72 fDisplayParams.fMSAASampleCount,
73 fDisplayParams.fColorType,
74 fDisplayParams.fColorSpace,
75 &fDisplayParams.fSurfaceProps);
76 return fSurface;
77 }
78
swapBuffers()79 void DawnWindowContext::swapBuffers() {
80 GrBackendRenderTarget backendRT = fSurface->getBackendRenderTarget(
81 SkSurface::kFlushRead_BackendHandleAccess);
82 GrDawnImageInfo imageInfo;
83 SkAssertResult(backendRT.getDawnImageInfo(&imageInfo));
84
85 fSwapChain.Present(imageInfo.fTexture);
86 this->onSwapBuffers();
87 }
88
resize(int w,int h)89 void DawnWindowContext::resize(int w, int h) {
90 fWidth = w;
91 fHeight = h;
92 fSwapChainImplementation = this->createSwapChainImplementation(w, h, fDisplayParams);
93 dawn::SwapChainDescriptor swapChainDesc;
94 swapChainDesc.implementation = reinterpret_cast<int64_t>(&fSwapChainImplementation);
95 fSwapChain = fDevice.CreateSwapChain(&swapChainDesc);
96 if (!fSwapChain) {
97 fContext.reset();
98 return;
99 }
100 fSwapChain.Configure(fSwapChainFormat, dawn::TextureUsageBit::OutputAttachment, fWidth,
101 fHeight);
102 }
103
setDisplayParams(const DisplayParams & params)104 void DawnWindowContext::setDisplayParams(const DisplayParams& params) {
105 fDisplayParams = params;
106 }
107
createDevice(dawn_native::BackendType type)108 dawn::Device DawnWindowContext::createDevice(dawn_native::BackendType type) {
109 fInstance->DiscoverDefaultAdapters();
110 DawnProcTable backendProcs = dawn_native::GetProcs();
111 dawnSetProcs(&backendProcs);
112
113 std::vector<dawn_native::Adapter> adapters = fInstance->GetAdapters();
114 for (dawn_native::Adapter adapter : adapters) {
115 if (adapter.GetBackendType() == type) {
116 return adapter.CreateDevice();
117 }
118 }
119 return nullptr;
120 }
121
122 } //namespace sk_app
123