ui/gl/gl_surface.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 <algorithm>
   8 #include <vector>
   9
  10 #include "base/command_line.h"
  11 #include "base/debug/trace_event.h"
  12 #include "base/lazy_instance.h"
  13 #include "base/logging.h"
  14 #include "base/threading/thread_local.h"
  15 #include "ui/gl/gl_context.h"
  16 #include "ui/gl/gl_implementation.h"
  17 #include "ui/gl/gl_switches.h"
  18
  19 #if defined(USE_X11)
  20 #include <X11/Xlib.h>
  21 #endif
  22
  23 namespace gfx {
  24
  25 namespace {
  26 base::LazyInstance<base::ThreadLocalPointer<GLSurface> >::Leaky
  27     current_surface_ = LAZY_INSTANCE_INITIALIZER;
  28 }  // namespace
  29
  30 // static
  31 bool GLSurface::InitializeOneOff() {
  32   DCHECK_EQ(kGLImplementationNone, GetGLImplementation());
  33
  34   TRACE_EVENT0("gpu", "GLSurface::InitializeOneOff");
  35
  36   std::vector<GLImplementation> allowed_impls;
  37   GetAllowedGLImplementations(&allowed_impls);
  38   DCHECK(!allowed_impls.empty());
  39
  40   CommandLine* cmd = CommandLine::ForCurrentProcess();
  41
  42   // The default implementation is always the first one in list.
  43   GLImplementation impl = allowed_impls[0];
  44   bool fallback_to_osmesa = false;
  45   if (cmd->HasSwitch(switches::kOverrideUseGLWithOSMesaForTests)) {
  46     impl = kGLImplementationOSMesaGL;
  47   } else if (cmd->HasSwitch(switches::kUseGL)) {
  48     std::string requested_implementation_name =
  49         cmd->GetSwitchValueASCII(switches::kUseGL);
  50     if (requested_implementation_name == "any") {
  51       fallback_to_osmesa = true;
  52     } else if (requested_implementation_name == "swiftshader") {
  53       impl = kGLImplementationEGLGLES2;
  54     } else {
  55       impl = GetNamedGLImplementation(requested_implementation_name);
  56       if (std::find(allowed_impls.begin(),
  57                     allowed_impls.end(),
  58                     impl) == allowed_impls.end()) {
  59         LOG(ERROR) << "Requested GL implementation is not available.";
  60         return false;
  61       }
  62     }
  63   }
  64
  65   bool gpu_service_logging = cmd->HasSwitch(switches::kEnableGPUServiceLogging);
  66   bool disable_gl_drawing = cmd->HasSwitch(switches::kDisableGLDrawingForTests);
  67
  68   return InitializeOneOffImplementation(
  69       impl, fallback_to_osmesa, gpu_service_logging, disable_gl_drawing);
  70 }
  71
  72 // static
  73 bool GLSurface::InitializeOneOffImplementation(GLImplementation impl,
  74                                                bool fallback_to_osmesa,
  75                                                bool gpu_service_logging,
  76                                                bool disable_gl_drawing) {
  77   bool initialized =
  78       InitializeStaticGLBindings(impl) && InitializeOneOffInternal();
  79   if (!initialized && fallback_to_osmesa) {
  80     ClearGLBindings();
  81     initialized = InitializeStaticGLBindings(kGLImplementationOSMesaGL) &&
  82                   InitializeOneOffInternal();
  83   }
  84   if (!initialized)
  85     ClearGLBindings();
  86
  87   if (initialized) {
  88     DVLOG(1) << "Using "
  89              << GetGLImplementationName(GetGLImplementation())
  90              << " GL implementation.";
  91     if (gpu_service_logging)
  92       InitializeDebugGLBindings();
  93     if (disable_gl_drawing)
  94       InitializeNullDrawGLBindings();
  95   }
  96   return initialized;
  97 }
  98
  99 // static
 100 void GLSurface::InitializeOneOffForTests() {
 101   DCHECK_EQ(kGLImplementationNone, GetGLImplementation());
 102
 103 #if defined(USE_X11)
 104   XInitThreads();
 105 #endif
 106
 107   bool use_osmesa = true;
 108
 109   // We usually use OSMesa as this works on all bots. The command line can
 110   // override this behaviour to use hardware GL.
 111   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kUseGpuInTests))
 112     use_osmesa = false;
 113
 114 #if defined(OS_ANDROID)
 115   // On Android we always use hardware GL.
 116   use_osmesa = false;
 117 #endif
 118
 119   std::vector<GLImplementation> allowed_impls;
 120   GetAllowedGLImplementations(&allowed_impls);
 121   DCHECK(!allowed_impls.empty());
 122
 123   GLImplementation impl = allowed_impls[0];
 124   if (use_osmesa)
 125     impl = kGLImplementationOSMesaGL;
 126
 127   DCHECK(!CommandLine::ForCurrentProcess()->HasSwitch(switches::kUseGL))
 128       << "kUseGL has not effect in tests";
 129
 130   bool fallback_to_osmesa = false;
 131   bool gpu_service_logging = false;
 132   bool disable_gl_drawing = true;
 133
 134   CHECK(InitializeOneOffImplementation(
 135       impl, fallback_to_osmesa, gpu_service_logging, disable_gl_drawing));
 136 }
 137
 138 // static
 139 void GLSurface::InitializeOneOffWithMockBindingsForTests() {
 140   DCHECK(!CommandLine::ForCurrentProcess()->HasSwitch(switches::kUseGL))
 141       << "kUseGL has not effect in tests";
 142
 143   // This method may be called multiple times in the same process to set up
 144   // mock bindings in different ways.
 145   ClearGLBindings();
 146
 147   bool fallback_to_osmesa = false;
 148   bool gpu_service_logging = false;
 149   bool disable_gl_drawing = false;
 150
 151   CHECK(InitializeOneOffImplementation(kGLImplementationMockGL,
 152                                        fallback_to_osmesa,
 153                                        gpu_service_logging,
 154                                        disable_gl_drawing));
 155 }
 156
 157 // static
 158 void GLSurface::InitializeDynamicMockBindingsForTests(GLContext* context) {
 159   CHECK(InitializeDynamicGLBindings(kGLImplementationMockGL, context));
 160 }
 161
 162 GLSurface::GLSurface() {}
 163
 164 bool GLSurface::Initialize() {
 165   return true;
 166 }
 167
 168 bool GLSurface::Resize(const gfx::Size& size) {
 169   NOTIMPLEMENTED();
 170   return false;
 171 }
 172
 173 bool GLSurface::Recreate() {
 174   NOTIMPLEMENTED();
 175   return false;
 176 }
 177
 178 bool GLSurface::DeferDraws() {
 179   return false;
 180 }
 181
 182 bool GLSurface::SupportsPostSubBuffer() {
 183   return false;
 184 }
 185
 186 unsigned int GLSurface::GetBackingFrameBufferObject() {
 187   return 0;
 188 }
 189
 190 bool GLSurface::PostSubBuffer(int x, int y, int width, int height) {
 191   return false;
 192 }
 193
 194 bool GLSurface::OnMakeCurrent(GLContext* context) {
 195   return true;
 196 }
 197
 198 bool GLSurface::SetBackbufferAllocation(bool allocated) {
 199   return true;
 200 }
 201
 202 void GLSurface::SetFrontbufferAllocation(bool allocated) {
 203 }
 204
 205 void* GLSurface::GetShareHandle() {
 206   NOTIMPLEMENTED();
 207   return NULL;
 208 }
 209
 210 void* GLSurface::GetDisplay() {
 211   NOTIMPLEMENTED();
 212   return NULL;
 213 }
 214
 215 void* GLSurface::GetConfig() {
 216   NOTIMPLEMENTED();
 217   return NULL;
 218 }
 219
 220 unsigned GLSurface::GetFormat() {
 221   NOTIMPLEMENTED();
 222   return 0;
 223 }
 224
 225 VSyncProvider* GLSurface::GetVSyncProvider() {
 226   return NULL;
 227 }
 228
 229 GLSurface* GLSurface::GetCurrent() {
 230   return current_surface_.Pointer()->Get();
 231 }
 232
 233 GLSurface::~GLSurface() {
 234   if (GetCurrent() == this)
 235     SetCurrent(NULL);
 236 }
 237
 238 void GLSurface::SetCurrent(GLSurface* surface) {
 239   current_surface_.Pointer()->Set(surface);
 240 }
 241
 242 bool GLSurface::ExtensionsContain(const char* c_extensions, const char* name) {
 243   DCHECK(name);
 244   if (!c_extensions)
 245     return false;
 246   std::string extensions(c_extensions);
 247   extensions += " ";
 248
 249   std::string delimited_name(name);
 250   delimited_name += " ";
 251
 252   return extensions.find(delimited_name) != std::string::npos;
 253 }
 254
 255 GLSurfaceAdapter::GLSurfaceAdapter(GLSurface* surface) : surface_(surface) {}
 256
 257 bool GLSurfaceAdapter::Initialize() {
 258   return surface_->Initialize();
 259 }
 260
 261 void GLSurfaceAdapter::Destroy() {
 262   surface_->Destroy();
 263 }
 264
 265 bool GLSurfaceAdapter::Resize(const gfx::Size& size) {
 266   return surface_->Resize(size);
 267 }
 268
 269 bool GLSurfaceAdapter::Recreate() {
 270   return surface_->Recreate();
 271 }
 272
 273 bool GLSurfaceAdapter::DeferDraws() {
 274   return surface_->DeferDraws();
 275 }
 276
 277 bool GLSurfaceAdapter::IsOffscreen() {
 278   return surface_->IsOffscreen();
 279 }
 280
 281 bool GLSurfaceAdapter::SwapBuffers() {
 282   return surface_->SwapBuffers();
 283 }
 284
 285 bool GLSurfaceAdapter::PostSubBuffer(int x, int y, int width, int height) {
 286   return surface_->PostSubBuffer(x, y, width, height);
 287 }
 288
 289 bool GLSurfaceAdapter::SupportsPostSubBuffer() {
 290   return surface_->SupportsPostSubBuffer();
 291 }
 292
 293 gfx::Size GLSurfaceAdapter::GetSize() {
 294   return surface_->GetSize();
 295 }
 296
 297 void* GLSurfaceAdapter::GetHandle() {
 298   return surface_->GetHandle();
 299 }
 300
 301 unsigned int GLSurfaceAdapter::GetBackingFrameBufferObject() {
 302   return surface_->GetBackingFrameBufferObject();
 303 }
 304
 305 bool GLSurfaceAdapter::OnMakeCurrent(GLContext* context) {
 306   return surface_->OnMakeCurrent(context);
 307 }
 308
 309 bool GLSurfaceAdapter::SetBackbufferAllocation(bool allocated) {
 310   return surface_->SetBackbufferAllocation(allocated);
 311 }
 312
 313 void GLSurfaceAdapter::SetFrontbufferAllocation(bool allocated) {
 314   surface_->SetFrontbufferAllocation(allocated);
 315 }
 316
 317 void* GLSurfaceAdapter::GetShareHandle() {
 318   return surface_->GetShareHandle();
 319 }
 320
 321 void* GLSurfaceAdapter::GetDisplay() {
 322   return surface_->GetDisplay();
 323 }
 324
 325 void* GLSurfaceAdapter::GetConfig() {
 326   return surface_->GetConfig();
 327 }
 328
 329 unsigned GLSurfaceAdapter::GetFormat() {
 330   return surface_->GetFormat();
 331 }
 332
 333 VSyncProvider* GLSurfaceAdapter::GetVSyncProvider() {
 334   return surface_->GetVSyncProvider();
 335 }
 336
 337 GLSurfaceAdapter::~GLSurfaceAdapter() {}
 338
 339 }  // namespace gfx