ui/gl/gl_surface_win.cc

   1 // Copyright (c) 2012 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 "ui/gl/gl_surface.h"
   6
   7 #include <dwmapi.h>
   8
   9 #include "base/command_line.h"
  10 #include "base/logging.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "base/trace_event/trace_event.h"
  13 #include "base/win/windows_version.h"
  14 #include "ui/gfx/frame_time.h"
  15 #include "ui/gfx/native_widget_types.h"
  16 #include "ui/gl/gl_bindings.h"
  17 #include "ui/gl/gl_implementation.h"
  18 #include "ui/gl/gl_surface_egl.h"
  19 #include "ui/gl/gl_surface_osmesa.h"
  20 #include "ui/gl/gl_surface_stub.h"
  21 #include "ui/gl/gl_surface_wgl.h"
  22
  23 // From ANGLE's egl/eglext.h.
  24 #if !defined(EGL_D3D11_ELSE_D3D9_DISPLAY_ANGLE)
  25 #define EGL_D3D11_ELSE_D3D9_DISPLAY_ANGLE \
  26   reinterpret_cast<EGLNativeDisplayType>(-2)
  27 #endif
  28
  29 namespace gfx {
  30
  31 // This OSMesa GL surface can use GDI to swap the contents of the buffer to a
  32 // view.
  33 class NativeViewGLSurfaceOSMesa : public GLSurfaceOSMesa {
  34  public:
  35   explicit NativeViewGLSurfaceOSMesa(gfx::AcceleratedWidget window);
  36   virtual ~NativeViewGLSurfaceOSMesa();
  37
  38   // Implement subset of GLSurface.
  39   virtual bool Initialize() override;
  40   virtual void Destroy() override;
  41   virtual bool IsOffscreen() override;
  42   virtual bool SwapBuffers() override;
  43   virtual bool SupportsPostSubBuffer() override;
  44   virtual bool PostSubBuffer(int x, int y, int width, int height) override;
  45
  46  private:
  47   gfx::AcceleratedWidget window_;
  48   HDC device_context_;
  49
  50   DISALLOW_COPY_AND_ASSIGN(NativeViewGLSurfaceOSMesa);
  51 };
  52
  53 class WinVSyncProvider : public VSyncProvider {
  54  public:
  55   explicit WinVSyncProvider(gfx::AcceleratedWidget window) :
  56     window_(window)
  57   {
  58     use_dwm_ = (base::win::GetVersion() >= base::win::VERSION_WIN7);
  59   }
  60
  61   virtual ~WinVSyncProvider() {}
  62
  63   virtual void GetVSyncParameters(const UpdateVSyncCallback& callback) {
  64     TRACE_EVENT0("gpu", "WinVSyncProvider::GetVSyncParameters");
  65
  66     base::TimeTicks timebase;
  67     base::TimeDelta interval;
  68     bool dwm_active = false;
  69
  70     // Query the DWM timing info first if available. This will provide the most
  71     // precise values.
  72     if (use_dwm_) {
  73       DWM_TIMING_INFO timing_info;
  74       timing_info.cbSize = sizeof(timing_info);
  75       HRESULT result = DwmGetCompositionTimingInfo(NULL, &timing_info);
  76       if (result == S_OK) {
  77         dwm_active = true;
  78         if (gfx::FrameTime::TimestampsAreHighRes()) {
  79           // qpcRefreshPeriod is very accurate but noisy, and must be used with
  80           // a high resolution timebase to avoid frequently missing Vsync.
  81           timebase = gfx::FrameTime::FromQPCValue(
  82               static_cast<LONGLONG>(timing_info.qpcVBlank));
  83           interval = base::TimeDelta::FromQPCValue(
  84               static_cast<LONGLONG>(timing_info.qpcRefreshPeriod));
  85         } else if (timing_info.rateRefresh.uiDenominator > 0 &&
  86             timing_info.rateRefresh.uiNumerator > 0) {
  87           // If FrameTime is not high resolution, we do not want to translate
  88           // the QPC value provided by DWM into the low-resolution timebase,
  89           // which would be error prone and jittery. As a fallback, we assume
  90           // the timebase is zero and use rateRefresh, which may be rounded but
  91           // isn't noisy like qpcRefreshPeriod, instead. The fact that we don't
  92           // have a timebase here may lead to brief periods of jank when our
  93           // scheduling becomes offset from the hardware vsync.
  94
  95           // Swap the numerator/denominator to convert frequency to period.
  96           interval = base::TimeDelta::FromMicroseconds(
  97               timing_info.rateRefresh.uiDenominator *
  98               base::Time::kMicrosecondsPerSecond /
  99               timing_info.rateRefresh.uiNumerator);
 100         }
 101       }
 102     }
 103
 104     if (!dwm_active) {
 105       // When DWM compositing is active all displays are normalized to the
 106       // refresh rate of the primary display, and won't composite any faster.
 107       // If DWM compositing is disabled, though, we can use the refresh rates
 108       // reported by each display, which will help systems that have mis-matched
 109       // displays that run at different frequencies.
 110       HMONITOR monitor = MonitorFromWindow(window_, MONITOR_DEFAULTTONEAREST);
 111       MONITORINFOEX monitor_info;
 112       monitor_info.cbSize = sizeof(MONITORINFOEX);
 113       BOOL result = GetMonitorInfo(monitor, &monitor_info);
 114       if (result) {
 115         DEVMODE display_info;
 116         display_info.dmSize = sizeof(DEVMODE);
 117         display_info.dmDriverExtra = 0;
 118         result = EnumDisplaySettings(monitor_info.szDevice,
 119             ENUM_CURRENT_SETTINGS, &display_info);
 120         if (result && display_info.dmDisplayFrequency > 1) {
 121           interval = base::TimeDelta::FromMicroseconds(
 122               (1.0 / static_cast<double>(display_info.dmDisplayFrequency)) *
 123               base::Time::kMicrosecondsPerSecond);
 124         }
 125       }
 126     }
 127
 128     if (interval.ToInternalValue() != 0) {
 129       callback.Run(timebase, interval);
 130     }
 131   }
 132
 133  private:
 134   DISALLOW_COPY_AND_ASSIGN(WinVSyncProvider);
 135
 136   gfx::AcceleratedWidget window_;
 137   bool use_dwm_;
 138 };
 139
 140 // Helper routine that does one-off initialization like determining the
 141 // pixel format.
 142 bool GLSurface::InitializeOneOffInternal() {
 143   switch (GetGLImplementation()) {
 144     case kGLImplementationDesktopGL:
 145       if (!GLSurfaceWGL::InitializeOneOff()) {
 146         LOG(ERROR) << "GLSurfaceWGL::InitializeOneOff failed.";
 147         return false;
 148       }
 149       break;
 150     case kGLImplementationEGLGLES2:
 151       if (!GLSurfaceEGL::InitializeOneOff()) {
 152         LOG(ERROR) << "GLSurfaceEGL::InitializeOneOff failed.";
 153         return false;
 154       }
 155       break;
 156   }
 157   return true;
 158 }
 159
 160 NativeViewGLSurfaceOSMesa::NativeViewGLSurfaceOSMesa(
 161     gfx::AcceleratedWidget window)
 162     : GLSurfaceOSMesa(OSMesaSurfaceFormatRGBA, gfx::Size(1, 1)),
 163       window_(window),
 164       device_context_(NULL) {
 165   DCHECK(window);
 166 }
 167
 168 NativeViewGLSurfaceOSMesa::~NativeViewGLSurfaceOSMesa() {
 169   Destroy();
 170 }
 171
 172 bool NativeViewGLSurfaceOSMesa::Initialize() {
 173   if (!GLSurfaceOSMesa::Initialize())
 174     return false;
 175
 176   device_context_ = GetDC(window_);
 177   return true;
 178 }
 179
 180 void NativeViewGLSurfaceOSMesa::Destroy() {
 181   if (window_ && device_context_)
 182     ReleaseDC(window_, device_context_);
 183
 184   device_context_ = NULL;
 185
 186   GLSurfaceOSMesa::Destroy();
 187 }
 188
 189 bool NativeViewGLSurfaceOSMesa::IsOffscreen() {
 190   return false;
 191 }
 192
 193 bool NativeViewGLSurfaceOSMesa::SwapBuffers() {
 194   DCHECK(device_context_);
 195
 196   gfx::Size size = GetSize();
 197
 198   // Note: negating the height below causes GDI to treat the bitmap data as row
 199   // 0 being at the top.
 200   BITMAPV4HEADER info = { sizeof(BITMAPV4HEADER) };
 201   info.bV4Width = size.width();
 202   info.bV4Height = -size.height();
 203   info.bV4Planes = 1;
 204   info.bV4BitCount = 32;
 205   info.bV4V4Compression = BI_BITFIELDS;
 206   info.bV4RedMask = 0x000000FF;
 207   info.bV4GreenMask = 0x0000FF00;
 208   info.bV4BlueMask = 0x00FF0000;
 209   info.bV4AlphaMask = 0xFF000000;
 210
 211   // Copy the back buffer to the window's device context. Do not check whether
 212   // StretchDIBits succeeds or not. It will fail if the window has been
 213   // destroyed but it is preferable to allow rendering to silently fail if the
 214   // window is destroyed. This is because the primary application of this
 215   // class of GLContext is for testing and we do not want every GL related ui /
 216   // browser test to become flaky if there is a race condition between GL
 217   // context destruction and window destruction.
 218   StretchDIBits(device_context_,
 219                 0, 0, size.width(), size.height(),
 220                 0, 0, size.width(), size.height(),
 221                 GetHandle(),
 222                 reinterpret_cast<BITMAPINFO*>(&info),
 223                 DIB_RGB_COLORS,
 224                 SRCCOPY);
 225
 226   return true;
 227 }
 228
 229 bool NativeViewGLSurfaceOSMesa::SupportsPostSubBuffer() {
 230   return true;
 231 }
 232
 233 bool NativeViewGLSurfaceOSMesa::PostSubBuffer(
 234     int x, int y, int width, int height) {
 235   DCHECK(device_context_);
 236
 237   gfx::Size size = GetSize();
 238
 239   // Note: negating the height below causes GDI to treat the bitmap data as row
 240   // 0 being at the top.
 241   BITMAPV4HEADER info = { sizeof(BITMAPV4HEADER) };
 242   info.bV4Width = size.width();
 243   info.bV4Height = -size.height();
 244   info.bV4Planes = 1;
 245   info.bV4BitCount = 32;
 246   info.bV4V4Compression = BI_BITFIELDS;
 247   info.bV4RedMask = 0x000000FF;
 248   info.bV4GreenMask = 0x0000FF00;
 249   info.bV4BlueMask = 0x00FF0000;
 250   info.bV4AlphaMask = 0xFF000000;
 251
 252   // Copy the back buffer to the window's device context. Do not check whether
 253   // StretchDIBits succeeds or not. It will fail if the window has been
 254   // destroyed but it is preferable to allow rendering to silently fail if the
 255   // window is destroyed. This is because the primary application of this
 256   // class of GLContext is for testing and we do not want every GL related ui /
 257   // browser test to become flaky if there is a race condition between GL
 258   // context destruction and window destruction.
 259   StretchDIBits(device_context_,
 260                 x, size.height() - y - height, width, height,
 261                 x, y, width, height,
 262                 GetHandle(),
 263                 reinterpret_cast<BITMAPINFO*>(&info),
 264                 DIB_RGB_COLORS,
 265                 SRCCOPY);
 266
 267   return true;
 268 }
 269
 270 scoped_refptr<GLSurface> GLSurface::CreateViewGLSurface(
 271     gfx::AcceleratedWidget window) {
 272   TRACE_EVENT0("gpu", "GLSurface::CreateViewGLSurface");
 273   switch (GetGLImplementation()) {
 274     case kGLImplementationOSMesaGL: {
 275       scoped_refptr<GLSurface> surface(
 276           new NativeViewGLSurfaceOSMesa(window));
 277       if (!surface->Initialize())
 278         return NULL;
 279
 280       return surface;
 281     }
 282     case kGLImplementationEGLGLES2: {
 283       DCHECK(window != gfx::kNullAcceleratedWidget);
 284       scoped_refptr<NativeViewGLSurfaceEGL> surface(
 285           new NativeViewGLSurfaceEGL(window));
 286       scoped_ptr<VSyncProvider> sync_provider;
 287       sync_provider.reset(new WinVSyncProvider(window));
 288       if (!surface->Initialize(sync_provider.Pass()))
 289         return NULL;
 290
 291       return surface;
 292     }
 293     case kGLImplementationDesktopGL: {
 294       scoped_refptr<GLSurface> surface(new NativeViewGLSurfaceWGL(
 295           window));
 296       if (!surface->Initialize())
 297         return NULL;
 298
 299       return surface;
 300     }
 301     case kGLImplementationMockGL:
 302       return new GLSurfaceStub;
 303     default:
 304       NOTREACHED();
 305       return NULL;
 306   }
 307 }
 308
 309 scoped_refptr<GLSurface> GLSurface::CreateOffscreenGLSurface(
 310     const gfx::Size& size) {
 311   TRACE_EVENT0("gpu", "GLSurface::CreateOffscreenGLSurface");
 312   switch (GetGLImplementation()) {
 313     case kGLImplementationOSMesaGL: {
 314       scoped_refptr<GLSurface> surface(
 315           new GLSurfaceOSMesa(OSMesaSurfaceFormatRGBA, size));
 316       if (!surface->Initialize())
 317         return NULL;
 318
 319       return surface;
 320     }
 321     case kGLImplementationEGLGLES2: {
 322       scoped_refptr<GLSurface> surface(new PbufferGLSurfaceEGL(size));
 323       if (!surface->Initialize())
 324         return NULL;
 325
 326       return surface;
 327     }
 328     case kGLImplementationDesktopGL: {
 329       scoped_refptr<GLSurface> surface(new PbufferGLSurfaceWGL(size));
 330       if (!surface->Initialize())
 331         return NULL;
 332
 333       return surface;
 334     }
 335     case kGLImplementationMockGL:
 336       return new GLSurfaceStub;
 337     default:
 338       NOTREACHED();
 339       return NULL;
 340   }
 341 }
 342
 343 EGLNativeDisplayType GetPlatformDefaultEGLNativeDisplay() {
 344   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
 345           switches::kDisableD3D11) ||
 346       base::CommandLine::ForCurrentProcess()->HasSwitch(switches::kUseWarp))
 347     return GetDC(NULL);
 348   return EGL_D3D11_ELSE_D3D9_DISPLAY_ANGLE;
 349 }
 350
 351 }  // namespace gfx