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| 1 // Copyright (c) 2013 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 "content/browser/renderer_host/compositing_iosurface_context_mac.h" | |
| 6 | |
| 7 #include <OpenGL/gl.h> | |
| 8 #include <OpenGL/OpenGL.h> | |
| 9 #include <vector> | |
| 10 | |
| 11 #include "base/command_line.h" | |
| 12 #include "base/debug/trace_event.h" | |
| 13 #include "base/logging.h" | |
| 14 #include "content/browser/gpu/gpu_data_manager_impl.h" | |
| 15 #include "ui/base/ui_base_switches.h" | |
| 16 #include "ui/gl/gl_switches.h" | |
| 17 #include "ui/gl/gpu_switching_manager.h" | |
| 18 | |
| 19 namespace content { | |
| 20 | |
| 21 // static | |
| 22 scoped_refptr<CompositingIOSurfaceContext> | |
| 23 CompositingIOSurfaceContext::Get(int window_number) { | |
| 24 TRACE_EVENT0("browser", "CompositingIOSurfaceContext::Get"); | |
| 25 | |
| 26 // Return the context for this window_number, if it exists. | |
| 27 WindowMap::iterator found = window_map()->find(window_number); | |
| 28 if (found != window_map()->end()) { | |
| 29 DCHECK(!found->second->poisoned_); | |
| 30 return found->second; | |
| 31 } | |
| 32 | |
| 33 base::ScopedTypeRef<CGLContextObj> cgl_context_strong; | |
| 34 CGLContextObj cgl_context = NULL; | |
| 35 CGLError error = kCGLNoError; | |
| 36 | |
| 37 // Create the pixel format object for the context. | |
| 38 std::vector<CGLPixelFormatAttribute> attribs; | |
| 39 attribs.push_back(kCGLPFADepthSize); | |
| 40 attribs.push_back(static_cast<CGLPixelFormatAttribute>(0)); | |
| 41 if (ui::GpuSwitchingManager::GetInstance()->SupportsDualGpus()) { | |
| 42 attribs.push_back(kCGLPFAAllowOfflineRenderers); | |
| 43 attribs.push_back(static_cast<CGLPixelFormatAttribute>(1)); | |
| 44 } | |
| 45 attribs.push_back(static_cast<CGLPixelFormatAttribute>(0)); | |
| 46 GLint number_virtual_screens = 0; | |
| 47 base::ScopedTypeRef<CGLPixelFormatObj> pixel_format; | |
| 48 error = CGLChoosePixelFormat(&attribs.front(), | |
| 49 pixel_format.InitializeInto(), | |
| 50 &number_virtual_screens); | |
| 51 if (error != kCGLNoError) { | |
| 52 LOG(ERROR) << "Failed to create pixel format object."; | |
| 53 return NULL; | |
| 54 } | |
| 55 | |
| 56 // Create all contexts in the same share group so that the textures don't | |
| 57 // need to be recreated when transitioning contexts. | |
| 58 CGLContextObj share_context = NULL; | |
| 59 if (!window_map()->empty()) | |
| 60 share_context = window_map()->begin()->second->cgl_context(); | |
| 61 error = CGLCreateContext( | |
| 62 pixel_format, share_context, cgl_context_strong.InitializeInto()); | |
| 63 if (error != kCGLNoError) { | |
| 64 LOG(ERROR) << "Failed to create context object."; | |
| 65 return NULL; | |
| 66 } | |
| 67 cgl_context = cgl_context_strong; | |
| 68 | |
| 69 // Note that VSync is ignored because CoreAnimation will automatically | |
| 70 // rate limit draws. | |
| 71 | |
| 72 return new CompositingIOSurfaceContext( | |
| 73 window_number, | |
| 74 cgl_context_strong, | |
| 75 cgl_context); | |
| 76 } | |
| 77 | |
| 78 void CompositingIOSurfaceContext::PoisonContextAndSharegroup() { | |
| 79 if (poisoned_) | |
| 80 return; | |
| 81 | |
| 82 for (WindowMap::iterator it = window_map()->begin(); | |
| 83 it != window_map()->end(); | |
| 84 ++it) { | |
| 85 it->second->poisoned_ = true; | |
| 86 } | |
| 87 window_map()->clear(); | |
| 88 } | |
| 89 | |
| 90 CompositingIOSurfaceContext::CompositingIOSurfaceContext( | |
| 91 int window_number, | |
| 92 base::ScopedTypeRef<CGLContextObj> cgl_context_strong, | |
| 93 CGLContextObj cgl_context) | |
| 94 : window_number_(window_number), | |
| 95 cgl_context_strong_(cgl_context_strong), | |
| 96 cgl_context_(cgl_context), | |
| 97 poisoned_(false) { | |
| 98 DCHECK(window_map()->find(window_number_) == window_map()->end()); | |
| 99 window_map()->insert(std::make_pair(window_number_, this)); | |
| 100 | |
| 101 GpuDataManager::GetInstance()->AddObserver(this); | |
| 102 } | |
| 103 | |
| 104 CompositingIOSurfaceContext::~CompositingIOSurfaceContext() { | |
| 105 GpuDataManager::GetInstance()->RemoveObserver(this); | |
| 106 | |
| 107 if (!poisoned_) { | |
| 108 DCHECK(window_map()->find(window_number_) != window_map()->end()); | |
| 109 DCHECK(window_map()->find(window_number_)->second == this); | |
| 110 window_map()->erase(window_number_); | |
| 111 } else { | |
| 112 WindowMap::const_iterator found = window_map()->find(window_number_); | |
| 113 if (found != window_map()->end()) | |
| 114 DCHECK(found->second != this); | |
| 115 } | |
| 116 } | |
| 117 | |
| 118 void CompositingIOSurfaceContext::OnGpuSwitching() { | |
| 119 // Recreate all browser-side GL contexts whenever the GPU switches. If this | |
| 120 // is not done, performance will suffer. | |
| 121 // http://crbug.com/361493 | |
| 122 PoisonContextAndSharegroup(); | |
| 123 } | |
| 124 | |
| 125 // static | |
| 126 CompositingIOSurfaceContext::WindowMap* | |
| 127 CompositingIOSurfaceContext::window_map() { | |
| 128 return window_map_.Pointer(); | |
| 129 } | |
| 130 | |
| 131 // static | |
| 132 base::LazyInstance<CompositingIOSurfaceContext::WindowMap> | |
| 133 CompositingIOSurfaceContext::window_map_; | |
| 134 | |
| 135 } // namespace content | |
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Chromium Code Reviews
Issue 490393002:
Simplify IOSurface CoreAnimation code: Part 2 (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master