src/ui/gl/gl_surface_x11.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 "base/debug/trace_event.h"
   8 #include "base/logging.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/message_loop/message_loop.h"
  11 #include "third_party/mesa/src/include/GL/osmesa.h"
  12 #include "ui/gfx/native_widget_types.h"
  13 #include "ui/gfx/x/x11_types.h"
  14 #include "ui/gl/gl_bindings.h"
  15 #include "ui/gl/gl_implementation.h"
  16 #include "ui/gl/gl_surface_egl.h"
  17 #include "ui/gl/gl_surface_glx.h"
  18 #include "ui/gl/gl_surface_osmesa.h"
  19 #include "ui/gl/gl_surface_stub.h"
  20
  21 namespace gfx {
  22
  23 // This OSMesa GL surface can use XLib to swap the contents of the buffer to a
  24 // view.
  25 class NativeViewGLSurfaceOSMesa : public GLSurfaceOSMesa {
  26  public:
  27   explicit NativeViewGLSurfaceOSMesa(gfx::AcceleratedWidget window);
  28
  29   static bool InitializeOneOff();
  30
  31   // Implement a subset of GLSurface.
  32   virtual bool Initialize() OVERRIDE;
  33   virtual void Destroy() OVERRIDE;
  34   virtual bool Resize(const gfx::Size& new_size) OVERRIDE;
  35   virtual bool IsOffscreen() OVERRIDE;
  36   virtual bool SwapBuffers() OVERRIDE;
  37   virtual bool SupportsPostSubBuffer() OVERRIDE;
  38   virtual bool PostSubBuffer(int x, int y, int width, int height) OVERRIDE;
  39
  40  protected:
  41   virtual ~NativeViewGLSurfaceOSMesa();
  42
  43  private:
  44   Display* xdisplay_;
  45   GC window_graphics_context_;
  46   gfx::AcceleratedWidget window_;
  47   GC pixmap_graphics_context_;
  48   Pixmap pixmap_;
  49
  50   DISALLOW_COPY_AND_ASSIGN(NativeViewGLSurfaceOSMesa);
  51 };
  52
  53 bool GLSurface::InitializeOneOffInternal() {
  54   switch (GetGLImplementation()) {
  55     case kGLImplementationDesktopGL:
  56       if (!GLSurfaceGLX::InitializeOneOff()) {
  57         LOG(ERROR) << "GLSurfaceGLX::InitializeOneOff failed.";
  58         return false;
  59       }
  60       break;
  61     case kGLImplementationOSMesaGL:
  62       if (!NativeViewGLSurfaceOSMesa::InitializeOneOff()) {
  63         LOG(ERROR) << "NativeViewGLSurfaceOSMesa::InitializeOneOff failed.";
  64         return false;
  65       }
  66       break;
  67     case kGLImplementationEGLGLES2:
  68       if (!GLSurfaceEGL::InitializeOneOff()) {
  69         LOG(ERROR) << "GLSurfaceEGL::InitializeOneOff failed.";
  70         return false;
  71       }
  72       break;
  73     default:
  74       break;
  75   }
  76
  77   return true;
  78 }
  79
  80 NativeViewGLSurfaceOSMesa::NativeViewGLSurfaceOSMesa(
  81     gfx::AcceleratedWidget window)
  82     : GLSurfaceOSMesa(OSMESA_BGRA, gfx::Size(1, 1)),
  83       xdisplay_(gfx::GetXDisplay()),
  84       window_graphics_context_(0),
  85       window_(window),
  86       pixmap_graphics_context_(0),
  87       pixmap_(0) {
  88   DCHECK(xdisplay_);
  89   DCHECK(window_);
  90 }
  91
  92 // static
  93 bool NativeViewGLSurfaceOSMesa::InitializeOneOff() {
  94   static bool initialized = false;
  95   if (initialized)
  96     return true;
  97
  98   if (!gfx::GetXDisplay()) {
  99     LOG(ERROR) << "XOpenDisplay failed.";
 100     return false;
 101   }
 102
 103   initialized = true;
 104   return true;
 105 }
 106
 107 bool NativeViewGLSurfaceOSMesa::Initialize() {
 108   if (!GLSurfaceOSMesa::Initialize())
 109     return false;
 110
 111   window_graphics_context_ = XCreateGC(xdisplay_, window_, 0, NULL);
 112   if (!window_graphics_context_) {
 113     LOG(ERROR) << "XCreateGC failed.";
 114     Destroy();
 115     return false;
 116   }
 117
 118   return true;
 119 }
 120
 121 void NativeViewGLSurfaceOSMesa::Destroy() {
 122   if (pixmap_graphics_context_) {
 123     XFreeGC(xdisplay_, pixmap_graphics_context_);
 124     pixmap_graphics_context_ = NULL;
 125   }
 126
 127   if (pixmap_) {
 128     XFreePixmap(xdisplay_, pixmap_);
 129     pixmap_ = 0;
 130   }
 131
 132   if (window_graphics_context_) {
 133     XFreeGC(xdisplay_, window_graphics_context_);
 134     window_graphics_context_ = NULL;
 135   }
 136
 137   XSync(xdisplay_, False);
 138 }
 139
 140 bool NativeViewGLSurfaceOSMesa::Resize(const gfx::Size& new_size) {
 141   if (!GLSurfaceOSMesa::Resize(new_size))
 142     return false;
 143
 144   XWindowAttributes attributes;
 145   if (!XGetWindowAttributes(xdisplay_, window_, &attributes)) {
 146     LOG(ERROR) << "XGetWindowAttributes failed for window " << window_ << ".";
 147     return false;
 148   }
 149
 150   // Destroy the previous pixmap and graphics context.
 151   if (pixmap_graphics_context_) {
 152     XFreeGC(xdisplay_, pixmap_graphics_context_);
 153     pixmap_graphics_context_ = NULL;
 154   }
 155   if (pixmap_) {
 156     XFreePixmap(xdisplay_, pixmap_);
 157     pixmap_ = 0;
 158   }
 159
 160   // Recreate a pixmap to hold the frame.
 161   pixmap_ = XCreatePixmap(xdisplay_,
 162                           window_,
 163                           new_size.width(),
 164                           new_size.height(),
 165                           attributes.depth);
 166   if (!pixmap_) {
 167     LOG(ERROR) << "XCreatePixmap failed.";
 168     return false;
 169   }
 170
 171   // Recreate a graphics context for the pixmap.
 172   pixmap_graphics_context_ = XCreateGC(xdisplay_, pixmap_, 0, NULL);
 173   if (!pixmap_graphics_context_) {
 174     LOG(ERROR) << "XCreateGC failed";
 175     return false;
 176   }
 177
 178   return true;
 179 }
 180
 181 bool NativeViewGLSurfaceOSMesa::IsOffscreen() {
 182   return false;
 183 }
 184
 185 bool NativeViewGLSurfaceOSMesa::SwapBuffers() {
 186   TRACE_EVENT2("gpu", "NativeViewGLSurfaceOSMesa:RealSwapBuffers",
 187       "width", GetSize().width(),
 188       "height", GetSize().height());
 189
 190   gfx::Size size = GetSize();
 191
 192   XWindowAttributes attributes;
 193   if (!XGetWindowAttributes(xdisplay_, window_, &attributes)) {
 194     LOG(ERROR) << "XGetWindowAttributes failed for window " << window_ << ".";
 195     return false;
 196   }
 197
 198   // Copy the frame into the pixmap.
 199   gfx::PutARGBImage(xdisplay_,
 200                     attributes.visual,
 201                     attributes.depth,
 202                     pixmap_,
 203                     pixmap_graphics_context_,
 204                     static_cast<const uint8*>(GetHandle()),
 205                     size.width(),
 206                     size.height());
 207
 208   // Copy the pixmap to the window.
 209   XCopyArea(xdisplay_,
 210             pixmap_,
 211             window_,
 212             window_graphics_context_,
 213             0,
 214             0,
 215             size.width(),
 216             size.height(),
 217             0,
 218             0);
 219
 220   return true;
 221 }
 222
 223 bool NativeViewGLSurfaceOSMesa::SupportsPostSubBuffer() {
 224   return true;
 225 }
 226
 227 bool NativeViewGLSurfaceOSMesa::PostSubBuffer(
 228     int x, int y, int width, int height) {
 229   gfx::Size size = GetSize();
 230
 231   // Move (0,0) from lower-left to upper-left
 232   y = size.height() - y - height;
 233
 234   XWindowAttributes attributes;
 235   if (!XGetWindowAttributes(xdisplay_, window_, &attributes)) {
 236     LOG(ERROR) << "XGetWindowAttributes failed for window " << window_ << ".";
 237     return false;
 238   }
 239
 240   // Copy the frame into the pixmap.
 241   gfx::PutARGBImage(xdisplay_,
 242                     attributes.visual,
 243                     attributes.depth,
 244                     pixmap_,
 245                     pixmap_graphics_context_,
 246                     static_cast<const uint8*>(GetHandle()),
 247                     size.width(),
 248                     size.height(),
 249                     x,
 250                     y,
 251                     x,
 252                     y,
 253                     width,
 254                     height);
 255
 256   // Copy the pixmap to the window.
 257   XCopyArea(xdisplay_,
 258             pixmap_,
 259             window_,
 260             window_graphics_context_,
 261             x,
 262             y,
 263             width,
 264             height,
 265             x,
 266             y);
 267
 268   return true;
 269 }
 270
 271 NativeViewGLSurfaceOSMesa::~NativeViewGLSurfaceOSMesa() {
 272   Destroy();
 273 }
 274
 275 scoped_refptr<GLSurface> GLSurface::CreateViewGLSurface(
 276     gfx::AcceleratedWidget window) {
 277   TRACE_EVENT0("gpu", "GLSurface::CreateViewGLSurface");
 278   switch (GetGLImplementation()) {
 279     case kGLImplementationOSMesaGL: {
 280       scoped_refptr<GLSurface> surface(
 281           new NativeViewGLSurfaceOSMesa(window));
 282       if (!surface->Initialize())
 283         return NULL;
 284
 285       return surface;
 286     }
 287     case kGLImplementationDesktopGL: {
 288       scoped_refptr<GLSurface> surface(new NativeViewGLSurfaceGLX(window));
 289       if (!surface->Initialize())
 290         return NULL;
 291
 292       return surface;
 293     }
 294     case kGLImplementationEGLGLES2: {
 295       DCHECK(window != gfx::kNullAcceleratedWidget);
 296       scoped_refptr<GLSurface> surface(new NativeViewGLSurfaceEGL(window));
 297       if (!surface->Initialize())
 298         return NULL;
 299
 300       return surface;
 301     }
 302     case kGLImplementationMockGL:
 303       return new GLSurfaceStub;
 304     default:
 305       NOTREACHED();
 306       return NULL;
 307   }
 308 }
 309
 310 scoped_refptr<GLSurface> GLSurface::CreateOffscreenGLSurface(
 311     const gfx::Size& size) {
 312   TRACE_EVENT0("gpu", "GLSurface::CreateOffscreenGLSurface");
 313   switch (GetGLImplementation()) {
 314     case kGLImplementationOSMesaGL: {
 315       scoped_refptr<GLSurface> surface(new GLSurfaceOSMesa(OSMESA_RGBA,
 316                                                            size));
 317       if (!surface->Initialize())
 318         return NULL;
 319
 320       return surface;
 321     }
 322     case kGLImplementationDesktopGL: {
 323       scoped_refptr<GLSurface> surface(new PbufferGLSurfaceGLX(size));
 324       if (!surface->Initialize())
 325         return NULL;
 326
 327       return surface;
 328     }
 329     case kGLImplementationEGLGLES2: {
 330       scoped_refptr<GLSurface> surface(new PbufferGLSurfaceEGL(size));
 331       if (!surface->Initialize())
 332         return NULL;
 333
 334       return surface;
 335     }
 336     case kGLImplementationMockGL:
 337       return new GLSurfaceStub;
 338     default:
 339       NOTREACHED();
 340       return NULL;
 341   }
 342 }
 343
 344 EGLNativeDisplayType GetPlatformDefaultEGLNativeDisplay() {
 345   return gfx::GetXDisplay();
 346 }
 347
 348 }  // namespace gfx