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 "tools/sk_app/DawnWindowContext.h"
9 #include "tools/sk_app/unix/WindowContextFactory_unix.h"
10 #include "dawn_native/DawnNative.h"
11 #include "dawn_native/VulkanBackend.h"
12 #include "src/ports/SkOSLibrary.h"
13 #include "tools/gpu/vk/VkTestUtils.h"
14
15 #include <vulkan/vulkan.h>
16 #include <X11/Xlib-xcb.h>
17
18 using sk_app::window_context_factory::XlibWindowInfo;
19 using sk_app::DisplayParams;
20 using sk_app::DawnWindowContext;
21
22 namespace sk_app {
23
24 class DawnVulkanWindowContext_xlib : public DawnWindowContext {
25 public:
26 DawnVulkanWindowContext_xlib(const XlibWindowInfo&, const DisplayParams&);
~DawnVulkanWindowContext_xlib()27 ~DawnVulkanWindowContext_xlib() override {}
28 wgpu::Device onInitializeContext() override;
onDestroyContext()29 void onDestroyContext() override {}
30 DawnSwapChainImplementation createSwapChainImplementation(
31 int width, int height, const DisplayParams& params) override;
onSwapBuffers()32 void onSwapBuffers() override {}
33
34 private:
35 Display* fDisplay;
36 XWindow fWindow;
37 VkSurfaceKHR fVkSurface = nullptr;
38
39 using INHERITED = DawnWindowContext;
40 };
41
DawnVulkanWindowContext_xlib(const XlibWindowInfo & winInfo,const DisplayParams & params)42 DawnVulkanWindowContext_xlib::DawnVulkanWindowContext_xlib(const XlibWindowInfo& winInfo,
43 const DisplayParams& params)
44 : INHERITED(params, wgpu::TextureFormat::BGRA8Unorm)
45 , fDisplay(winInfo.fDisplay)
46 , fWindow(winInfo.fWindow) {
47 XWindow root;
48 int x, y;
49 unsigned int border_width, depth;
50 unsigned int width, height;
51 XGetGeometry(fDisplay, fWindow, &root, &x, &y, &width, &height, &border_width, &depth);
52 this->initializeContext(width, height);
53 }
54
createSwapChainImplementation(int width,int height,const DisplayParams & params)55 DawnSwapChainImplementation DawnVulkanWindowContext_xlib::createSwapChainImplementation(
56 int width, int height, const DisplayParams& params) {
57 return dawn_native::vulkan::CreateNativeSwapChainImpl(fDevice.Get(), fVkSurface);
58 }
59
onInitializeContext()60 wgpu::Device DawnVulkanWindowContext_xlib::onInitializeContext() {
61 wgpu::Device device = this->createDevice(dawn_native::BackendType::Vulkan);
62 if (!device) {
63 return nullptr;
64 }
65
66 void *vkLib = SkLoadDynamicLibrary("libvulkan.so.1");
67 if (!vkLib) {
68 return nullptr;
69 }
70 VkInstance instance = dawn_native::vulkan::GetInstance(device.Get());
71 if (!instance) {
72 return nullptr;
73 }
74 auto createXcbSurfaceKHR =
75 reinterpret_cast<PFN_vkCreateXcbSurfaceKHR>(SkGetProcedureAddress(vkLib,
76 "vkCreateXcbSurfaceKHR"));
77 if (!createXcbSurfaceKHR) {
78 printf("couldn't get extensions :(\n");
79 return nullptr;
80 }
81
82 VkXcbSurfaceCreateInfoKHR surfaceCreateInfo;
83 memset(&surfaceCreateInfo, 0, sizeof(VkXcbSurfaceCreateInfoKHR));
84 surfaceCreateInfo.sType = VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR;
85 surfaceCreateInfo.pNext = nullptr;
86 surfaceCreateInfo.flags = 0;
87 surfaceCreateInfo.connection = XGetXCBConnection(fDisplay);
88 surfaceCreateInfo.window = fWindow;
89
90 createXcbSurfaceKHR(instance, &surfaceCreateInfo, nullptr, &fVkSurface);
91 return device;
92 }
93
94 namespace window_context_factory {
95
MakeDawnVulkanForXlib(const XlibWindowInfo & winInfo,const DisplayParams & params)96 std::unique_ptr<WindowContext> MakeDawnVulkanForXlib(const XlibWindowInfo& winInfo,
97 const DisplayParams& params) {
98 std::unique_ptr<WindowContext> ctx(new DawnVulkanWindowContext_xlib(winInfo, params));
99 if (!ctx->isValid()) {
100 return nullptr;
101 }
102 return ctx;
103 }
104
105 }
106
107 } // namespace sk_app
108