gl_context.cc revision 5821806d5e7f356e8fa4b058a389a808ea183019
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <string> 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/command_line.h" 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/lazy_instance.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/threading/thread_local.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gl/gl_bindings.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gl/gl_context.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gl/gl_gl_api_implementation.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gl/gl_implementation.h" 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gl/gl_surface.h" 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gl/gl_switches.h" 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace gfx { 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace { 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)base::LazyInstance<base::ThreadLocalPointer<GLContext> >::Leaky 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) current_context_ = LAZY_INSTANCE_INITIALIZER; 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)GLContext::GLContext(GLShareGroup* share_group) : share_group_(share_group) { 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!share_group_.get()) 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) share_group_ = new GLShareGroup; 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) share_group_->AddContext(this); 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)GLContext::~GLContext() { 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) share_group_->RemoveContext(this); 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (GetCurrent() == this) { 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SetCurrent(NULL, NULL); 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool GLContext::GetTotalGpuMemory(size_t* bytes) { 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(bytes); 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *bytes = 0; 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)std::string GLContext::GetExtensions() { 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(IsCurrent(NULL)); 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const char* ext = reinterpret_cast<const char*>(glGetString(GL_EXTENSIONS)); 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return std::string(ext ? ext : ""); 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool GLContext::HasExtension(const char* name) { 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string extensions = GetExtensions(); 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) extensions += " "; 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string delimited_name(name); 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) delimited_name += " "; 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return extensions.find(delimited_name) != std::string::npos; 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)GLShareGroup* GLContext::share_group() { 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return share_group_.get(); 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool GLContext::LosesAllContextsOnContextLost() { 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (GetGLImplementation()) { 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case kGLImplementationDesktopGL: 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case kGLImplementationEGLGLES2: 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case kGLImplementationOSMesaGL: 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case kGLImplementationAppleGL: 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case kGLImplementationMockGL: 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) default: 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTREACHED(); 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)GLContext* GLContext::GetCurrent() { 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return current_context_.Pointer()->Get(); 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void GLContext::SetCurrent(GLContext* context, GLSurface* surface) { 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) current_context_.Pointer()->Set(context); 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) GLSurface::SetCurrent(surface); 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)GLStateRestorer* GLContext::GetGLStateRestorer() { 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool GLContext::WasAllocatedUsingRobustnessExtension() { 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool GLContext::InitializeExtensionBindings() { 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(IsCurrent(NULL)); 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static bool initialized = false; 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (initialized) 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return initialized; 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) initialized = InitializeGLExtensionBindings(GetGLImplementation(), this); 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!initialized) 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LOG(ERROR) << "Could not initialize extension bindings."; 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return initialized; 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void GLContext::SetupForVirtualization() { 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!virtual_gl_api_) { 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual_gl_api_.reset(new VirtualGLApi()); 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual_gl_api_->Initialize(&g_driver_gl, this); 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool GLContext::MakeVirtuallyCurrent( 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) GLContext* virtual_context, GLSurface* surface) { 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(virtual_gl_api_); 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return virtual_gl_api_->MakeCurrent(virtual_context, surface); 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void GLContext::SetRealGLApi() { 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SetGLToRealGLApi(); 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace gfx 128