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