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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "content/common/gpu/child_window_surface_win.h" | |
| 6 | |
| 7 #include "base/compiler_specific.h" | |
| 8 #include "base/win/scoped_hdc.h" | |
| 9 #include "base/win/wrapped_window_proc.h" | |
| 10 #include "content/common/gpu/gpu_channel_manager.h" | |
| 11 #include "content/common/gpu/gpu_channel_manager_delegate.h" | |
| 12 #include "gpu/ipc/common/gpu_messages.h" | |
| 13 #include "ui/base/win/hidden_window.h" | |
| 14 #include "ui/gfx/native_widget_types.h" | |
| 15 #include "ui/gfx/win/hwnd_util.h" | |
| 16 #include "ui/gl/egl_util.h" | |
| 17 #include "ui/gl/gl_context.h" | |
| 18 #include "ui/gl/gl_surface_egl.h" | |
| 19 #include "ui/gl/scoped_make_current.h" | |
| 20 | |
| 21 namespace content { | |
| 22 | |
| 23 namespace { | |
| 24 | |
| 25 ATOM g_window_class; | |
| 26 | |
| 27 LRESULT CALLBACK IntermediateWindowProc(HWND window, | |
| 28 UINT message, | |
| 29 WPARAM w_param, | |
| 30 LPARAM l_param) { | |
| 31 switch (message) { | |
| 32 case WM_ERASEBKGND: | |
| 33 // Prevent windows from erasing the background. | |
| 34 return 1; | |
| 35 case WM_PAINT: | |
| 36 PAINTSTRUCT paint; | |
| 37 if (BeginPaint(window, &paint)) { | |
| 38 ChildWindowSurfaceWin* window_surface = | |
| 39 reinterpret_cast<ChildWindowSurfaceWin*>( | |
| 40 gfx::GetWindowUserData(window)); | |
| 41 DCHECK(window_surface); | |
| 42 | |
| 43 // Wait to clear the contents until a GL draw occurs, as otherwise an | |
| 44 // unsightly black flash may happen if the GL contents are still | |
| 45 // transparent. | |
| 46 window_surface->InvalidateWindowRect(gfx::Rect(paint.rcPaint)); | |
| 47 EndPaint(window, &paint); | |
| 48 } | |
| 49 return 0; | |
| 50 default: | |
| 51 return DefWindowProc(window, message, w_param, l_param); | |
| 52 } | |
| 53 } | |
| 54 | |
| 55 void InitializeWindowClass() { | |
| 56 if (g_window_class) | |
| 57 return; | |
| 58 | |
| 59 WNDCLASSEX intermediate_class; | |
| 60 base::win::InitializeWindowClass( | |
| 61 L"Intermediate D3D Window", | |
| 62 &base::win::WrappedWindowProc<IntermediateWindowProc>, CS_OWNDC, 0, 0, | |
| 63 nullptr, reinterpret_cast<HBRUSH>(GetStockObject(BLACK_BRUSH)), nullptr, | |
| 64 nullptr, nullptr, &intermediate_class); | |
| 65 g_window_class = RegisterClassEx(&intermediate_class); | |
| 66 if (!g_window_class) { | |
| 67 LOG(ERROR) << "RegisterClass failed."; | |
| 68 return; | |
| 69 } | |
| 70 } | |
| 71 } | |
| 72 | |
| 73 ChildWindowSurfaceWin::ChildWindowSurfaceWin(GpuChannelManager* manager, | |
| 74 HWND parent_window) | |
| 75 : gfx::NativeViewGLSurfaceEGL(0), | |
| 76 parent_window_(parent_window), | |
| 77 manager_(manager), | |
| 78 alpha_(true), | |
| 79 first_swap_(true) { | |
| 80 // Don't use EGL_ANGLE_window_fixed_size so that we can avoid recreating the | |
| 81 // window surface, which can cause flicker on DirectComposition. | |
| 82 enable_fixed_size_angle_ = false; | |
| 83 } | |
| 84 | |
| 85 EGLConfig ChildWindowSurfaceWin::GetConfig() { | |
| 86 if (!config_) { | |
| 87 int alpha_size = alpha_ ? 8 : EGL_DONT_CARE; | |
| 88 | |
| 89 EGLint config_attribs[] = {EGL_ALPHA_SIZE, | |
| 90 alpha_size, | |
| 91 EGL_BLUE_SIZE, | |
| 92 8, | |
| 93 EGL_GREEN_SIZE, | |
| 94 8, | |
| 95 EGL_RED_SIZE, | |
| 96 8, | |
| 97 EGL_RENDERABLE_TYPE, | |
| 98 EGL_OPENGL_ES2_BIT, | |
| 99 EGL_SURFACE_TYPE, | |
| 100 EGL_WINDOW_BIT | EGL_PBUFFER_BIT, | |
| 101 EGL_NONE}; | |
| 102 | |
| 103 EGLDisplay display = GetHardwareDisplay(); | |
| 104 EGLint num_configs; | |
| 105 if (!eglChooseConfig(display, config_attribs, &config_, 1, &num_configs)) { | |
| 106 LOG(ERROR) << "eglChooseConfig failed with error " | |
| 107 << ui::GetLastEGLErrorString(); | |
| 108 return NULL; | |
| 109 } | |
| 110 } | |
| 111 | |
| 112 return config_; | |
| 113 } | |
| 114 | |
| 115 bool ChildWindowSurfaceWin::InitializeNativeWindow() { | |
| 116 if (window_) | |
| 117 return true; | |
| 118 InitializeWindowClass(); | |
| 119 DCHECK(g_window_class); | |
| 120 | |
| 121 RECT windowRect; | |
| 122 GetClientRect(parent_window_, &windowRect); | |
| 123 | |
| 124 window_ = CreateWindowEx( | |
| 125 WS_EX_NOPARENTNOTIFY, reinterpret_cast<wchar_t*>(g_window_class), L"", | |
| 126 WS_CHILDWINDOW | WS_DISABLED | WS_VISIBLE, 0, 0, | |
| 127 windowRect.right - windowRect.left, windowRect.bottom - windowRect.top, | |
| 128 ui::GetHiddenWindow(), NULL, NULL, NULL); | |
| 129 gfx::SetWindowUserData(window_, this); | |
| 130 manager_->delegate()->SendAcceleratedSurfaceCreatedChildWindow(parent_window_, | |
| 131 window_); | |
| 132 return true; | |
| 133 } | |
| 134 | |
| 135 bool ChildWindowSurfaceWin::Resize(const gfx::Size& size, | |
| 136 float scale_factor, | |
| 137 bool has_alpha) { | |
| 138 if (!SupportsPostSubBuffer()) { | |
| 139 if (!MoveWindow(window_, 0, 0, size.width(), size.height(), FALSE)) { | |
| 140 return false; | |
| 141 } | |
| 142 alpha_ = has_alpha; | |
| 143 return gfx::NativeViewGLSurfaceEGL::Resize(size, scale_factor, has_alpha); | |
| 144 } else { | |
| 145 if (size == GetSize() && has_alpha == alpha_) | |
| 146 return true; | |
| 147 | |
| 148 // Force a resize and redraw (but not a move, activate, etc.). | |
| 149 if (!SetWindowPos(window_, nullptr, 0, 0, size.width(), size.height(), | |
| 150 SWP_NOMOVE | SWP_NOACTIVATE | SWP_NOCOPYBITS | | |
| 151 SWP_NOOWNERZORDER | SWP_NOZORDER)) { | |
| 152 return false; | |
| 153 } | |
| 154 size_ = size; | |
| 155 if (has_alpha == alpha_) { | |
| 156 // A 0-size PostSubBuffer doesn't swap but forces the swap chain to resize | |
| 157 // to match the window. | |
| 158 PostSubBuffer(0, 0, 0, 0); | |
| 159 } else { | |
| 160 alpha_ = has_alpha; | |
| 161 config_ = nullptr; | |
| 162 | |
| 163 scoped_ptr<ui::ScopedMakeCurrent> scoped_make_current; | |
| 164 gfx::GLContext* current_context = gfx::GLContext::GetCurrent(); | |
| 165 bool was_current = current_context && current_context->IsCurrent(this); | |
| 166 if (was_current) { | |
| 167 scoped_make_current.reset( | |
| 168 new ui::ScopedMakeCurrent(current_context, this)); | |
| 169 current_context->ReleaseCurrent(this); | |
| 170 } | |
| 171 | |
| 172 Destroy(); | |
| 173 | |
| 174 if (!Initialize()) { | |
| 175 LOG(ERROR) << "Failed to resize window."; | |
| 176 return false; | |
| 177 } | |
| 178 } | |
| 179 return true; | |
| 180 } | |
| 181 } | |
| 182 | |
| 183 gfx::SwapResult ChildWindowSurfaceWin::SwapBuffers() { | |
| 184 gfx::SwapResult result = NativeViewGLSurfaceEGL::SwapBuffers(); | |
| 185 // Force the driver to finish drawing before clearing the contents to | |
| 186 // transparent, to reduce or eliminate the period of time where the contents | |
| 187 // have flashed black. | |
| 188 if (first_swap_) { | |
| 189 glFinish(); | |
| 190 first_swap_ = false; | |
| 191 } | |
| 192 ClearInvalidContents(); | |
| 193 return result; | |
| 194 } | |
| 195 | |
| 196 gfx::SwapResult ChildWindowSurfaceWin::PostSubBuffer(int x, | |
| 197 int y, | |
| 198 int width, | |
| 199 int height) { | |
| 200 gfx::SwapResult result = | |
| 201 NativeViewGLSurfaceEGL::PostSubBuffer(x, y, width, height); | |
| 202 ClearInvalidContents(); | |
| 203 return result; | |
| 204 } | |
| 205 | |
| 206 void ChildWindowSurfaceWin::InvalidateWindowRect(const gfx::Rect& rect) { | |
| 207 rect_to_clear_.Union(rect); | |
| 208 } | |
| 209 | |
| 210 void ChildWindowSurfaceWin::ClearInvalidContents() { | |
| 211 if (!rect_to_clear_.IsEmpty()) { | |
| 212 base::win::ScopedGetDC dc(window_); | |
| 213 | |
| 214 RECT rect = rect_to_clear_.ToRECT(); | |
| 215 | |
| 216 // DirectComposition composites with the contents under the SwapChain, | |
| 217 // so ensure that's cleared. GDI treats black as transparent. | |
| 218 FillRect(dc, &rect, reinterpret_cast<HBRUSH>(GetStockObject(BLACK_BRUSH))); | |
| 219 rect_to_clear_ = gfx::Rect(); | |
| 220 } | |
| 221 } | |
| 222 | |
| 223 ChildWindowSurfaceWin::~ChildWindowSurfaceWin() { | |
| 224 gfx::SetWindowUserData(window_, nullptr); | |
| 225 DestroyWindow(window_); | |
| 226 } | |
| 227 | |
| 228 } // namespace content | |
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Chromium Code Reviews
Issue 1845563005:
Refactor content/common/gpu into gpu/ipc/service (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master