src/ui/gl/gl_surface_ozone.cc

   1 // Copyright 2014 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 "base/logging.h"
   8 #include "base/memory/ref_counted.h"
   9 #include "ui/gfx/native_widget_types.h"
  10 #include "ui/gl/gl_context.h"
  11 #include "ui/gl/gl_image.h"
  12 #include "ui/gl/gl_implementation.h"
  13 #include "ui/gl/gl_surface_egl.h"
  14 #include "ui/gl/gl_surface_osmesa.h"
  15 #include "ui/gl/gl_surface_stub.h"
  16 #include "ui/gl/scoped_make_current.h"
  17 #include "ui/ozone/public/surface_factory_ozone.h"
  18 #include "ui/ozone/public/surface_ozone_egl.h"
  19
  20 namespace gfx {
  21
  22 namespace {
  23
  24 // A thin wrapper around GLSurfaceEGL that owns the EGLNativeWindow
  25 class GL_EXPORT GLSurfaceOzoneEGL : public NativeViewGLSurfaceEGL {
  26  public:
  27   GLSurfaceOzoneEGL(scoped_ptr<ui::SurfaceOzoneEGL> ozone_surface,
  28                     AcceleratedWidget widget)
  29       : NativeViewGLSurfaceEGL(ozone_surface->GetNativeWindow()),
  30         ozone_surface_(ozone_surface.Pass()),
  31         widget_(widget) {}
  32
  33   virtual bool Initialize() OVERRIDE {
  34     return Initialize(ozone_surface_->CreateVSyncProvider());
  35   }
  36   virtual bool Resize(const gfx::Size& size) OVERRIDE {
  37     if (!ozone_surface_->ResizeNativeWindow(size)) {
  38       if (!ReinitializeNativeSurface() ||
  39           !ozone_surface_->ResizeNativeWindow(size))
  40         return false;
  41     }
  42
  43     return NativeViewGLSurfaceEGL::Resize(size);
  44   }
  45   virtual bool SwapBuffers() OVERRIDE {
  46     if (!NativeViewGLSurfaceEGL::SwapBuffers())
  47       return false;
  48
  49     return ozone_surface_->OnSwapBuffers();
  50   }
  51   virtual bool ScheduleOverlayPlane(int z_order,
  52                                     OverlayTransform transform,
  53                                     GLImage* image,
  54                                     const Rect& bounds_rect,
  55                                     const RectF& crop_rect) OVERRIDE {
  56     return image->ScheduleOverlayPlane(
  57         widget_, z_order, transform, bounds_rect, crop_rect);
  58   }
  59
  60  private:
  61   using NativeViewGLSurfaceEGL::Initialize;
  62
  63   virtual ~GLSurfaceOzoneEGL() {
  64     Destroy();  // EGL surface must be destroyed before SurfaceOzone
  65   }
  66
  67   bool ReinitializeNativeSurface() {
  68     scoped_ptr<ui::ScopedMakeCurrent> scoped_make_current;
  69     GLContext* current_context = GLContext::GetCurrent();
  70     bool was_current =
  71         current_context && current_context->IsCurrent(this);
  72     if (was_current) {
  73       scoped_make_current.reset(
  74           new ui::ScopedMakeCurrent(current_context, this));
  75     }
  76
  77     Destroy();
  78     ozone_surface_ =
  79         ui::SurfaceFactoryOzone::GetInstance()->CreateEGLSurfaceForWidget(
  80             widget_).Pass();
  81     if (!ozone_surface_) {
  82       LOG(ERROR) << "Failed to create native surface.";
  83       return false;
  84     }
  85
  86     window_ = ozone_surface_->GetNativeWindow();
  87     if (!Initialize()) {
  88       LOG(ERROR) << "Failed to initialize.";
  89       return false;
  90     }
  91
  92     return true;
  93   }
  94
  95   // The native surface. Deleting this is allowed to free the EGLNativeWindow.
  96   scoped_ptr<ui::SurfaceOzoneEGL> ozone_surface_;
  97   AcceleratedWidget widget_;
  98
  99   DISALLOW_COPY_AND_ASSIGN(GLSurfaceOzoneEGL);
 100 };
 101
 102 class GL_EXPORT GLSurfaceOzoneSurfaceless : public SurfacelessEGL {
 103  public:
 104   GLSurfaceOzoneSurfaceless(scoped_ptr<ui::SurfaceOzoneEGL> ozone_surface,
 105                             AcceleratedWidget widget)
 106       : SurfacelessEGL(gfx::Size()),
 107         ozone_surface_(ozone_surface.Pass()),
 108         widget_(widget) {}
 109
 110   virtual bool Initialize() OVERRIDE {
 111     if (!SurfacelessEGL::Initialize())
 112       return false;
 113     vsync_provider_ = ozone_surface_->CreateVSyncProvider();
 114     if (!vsync_provider_)
 115       return false;
 116     return true;
 117   }
 118   virtual bool Resize(const gfx::Size& size) OVERRIDE {
 119     if (!ozone_surface_->ResizeNativeWindow(size))
 120       return false;
 121
 122     return SurfacelessEGL::Resize(size);
 123   }
 124   virtual bool SwapBuffers() OVERRIDE {
 125     // TODO: this should be replaced by a fence when supported by the driver.
 126     glFinish();
 127     return ozone_surface_->OnSwapBuffers();
 128   }
 129   virtual bool ScheduleOverlayPlane(int z_order,
 130                                     OverlayTransform transform,
 131                                     GLImage* image,
 132                                     const Rect& bounds_rect,
 133                                     const RectF& crop_rect) OVERRIDE {
 134     return image->ScheduleOverlayPlane(
 135         widget_, z_order, transform, bounds_rect, crop_rect);
 136   }
 137   virtual bool IsOffscreen() OVERRIDE { return false; }
 138   virtual VSyncProvider* GetVSyncProvider() OVERRIDE {
 139     return vsync_provider_.get();
 140   }
 141   virtual bool SupportsPostSubBuffer() OVERRIDE { return true; }
 142   virtual bool PostSubBuffer(int x, int y, int width, int height) OVERRIDE {
 143     // The actual sub buffer handling is handled at higher layers.
 144     SwapBuffers();
 145     return true;
 146   }
 147   virtual bool IsSurfaceless() const OVERRIDE { return true; }
 148
 149  private:
 150   virtual ~GLSurfaceOzoneSurfaceless() {
 151     Destroy();  // EGL surface must be destroyed before SurfaceOzone
 152   }
 153
 154   // The native surface. Deleting this is allowed to free the EGLNativeWindow.
 155   scoped_ptr<ui::SurfaceOzoneEGL> ozone_surface_;
 156   AcceleratedWidget widget_;
 157   scoped_ptr<VSyncProvider> vsync_provider_;
 158
 159   DISALLOW_COPY_AND_ASSIGN(GLSurfaceOzoneSurfaceless);
 160 };
 161
 162 }  // namespace
 163
 164 // static
 165 bool GLSurface::InitializeOneOffInternal() {
 166   switch (GetGLImplementation()) {
 167     case kGLImplementationEGLGLES2:
 168       if (!GLSurfaceEGL::InitializeOneOff()) {
 169         LOG(ERROR) << "GLSurfaceEGL::InitializeOneOff failed.";
 170         return false;
 171       }
 172
 173       return true;
 174     case kGLImplementationOSMesaGL:
 175     case kGLImplementationMockGL:
 176       return true;
 177     default:
 178       return false;
 179   }
 180 }
 181
 182 // static
 183 scoped_refptr<GLSurface> GLSurface::CreateViewGLSurface(
 184     gfx::AcceleratedWidget window) {
 185   if (GetGLImplementation() == kGLImplementationOSMesaGL) {
 186     scoped_refptr<GLSurface> surface(new GLSurfaceOSMesaHeadless());
 187     if (!surface->Initialize())
 188       return NULL;
 189     return surface;
 190   }
 191   DCHECK(GetGLImplementation() == kGLImplementationEGLGLES2);
 192   if (window != kNullAcceleratedWidget) {
 193     scoped_refptr<GLSurface> surface;
 194     if (GLSurfaceEGL::IsEGLSurfacelessContextSupported() &&
 195         ui::SurfaceFactoryOzone::GetInstance()
 196             ->CanShowPrimaryPlaneAsOverlay()) {
 197       scoped_ptr<ui::SurfaceOzoneEGL> surface_ozone =
 198           ui::SurfaceFactoryOzone::GetInstance()
 199               ->CreateSurfacelessEGLSurfaceForWidget(window);
 200       if (!surface_ozone)
 201         return NULL;
 202       surface = new GLSurfaceOzoneSurfaceless(surface_ozone.Pass(), window);
 203     } else {
 204       scoped_ptr<ui::SurfaceOzoneEGL> surface_ozone =
 205           ui::SurfaceFactoryOzone::GetInstance()->CreateEGLSurfaceForWidget(
 206               window);
 207       if (!surface_ozone)
 208         return NULL;
 209
 210       surface = new GLSurfaceOzoneEGL(surface_ozone.Pass(), window);
 211     }
 212     if (!surface->Initialize())
 213       return NULL;
 214     return surface;
 215   } else {
 216     scoped_refptr<GLSurface> surface = new GLSurfaceStub();
 217     if (surface->Initialize())
 218       return surface;
 219   }
 220   return NULL;
 221 }
 222
 223 // static
 224 scoped_refptr<GLSurface> GLSurface::CreateOffscreenGLSurface(
 225     const gfx::Size& size) {
 226   switch (GetGLImplementation()) {
 227     case kGLImplementationOSMesaGL: {
 228       scoped_refptr<GLSurface> surface(
 229           new GLSurfaceOSMesa(OSMesaSurfaceFormatBGRA, size));
 230       if (!surface->Initialize())
 231         return NULL;
 232
 233       return surface;
 234     }
 235     case kGLImplementationEGLGLES2: {
 236       scoped_refptr<GLSurface> surface;
 237       if (GLSurfaceEGL::IsEGLSurfacelessContextSupported() &&
 238           (size.width() == 0 && size.height() == 0)) {
 239         surface = new SurfacelessEGL(size);
 240       } else
 241         surface = new PbufferGLSurfaceEGL(size);
 242
 243       if (!surface->Initialize())
 244         return NULL;
 245       return surface;
 246     }
 247     default:
 248       NOTREACHED();
 249       return NULL;
 250   }
 251 }
 252
 253 EGLNativeDisplayType GetPlatformDefaultEGLNativeDisplay() {
 254   return ui::SurfaceFactoryOzone::GetInstance()->GetNativeDisplay();
 255 }
 256
 257 }  // namespace gfx