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| 1 // Copyright (c) 2011 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 #if defined(ENABLE_GPU) |
| 6 |
| 7 #include "content/common/gpu/image_transport_surface.h" |
| 8 |
| 9 #include "base/bind.h" |
| 10 #include "base/compiler_specific.h" |
| 11 #include "base/memory/scoped_ptr.h" |
| 12 #include "base/memory/weak_ptr.h" |
| 13 #include "base/win/windows_version.h" |
| 14 #include "content/common/gpu/gpu_messages.h" |
| 15 #include "ui/gfx/gl/gl_bindings.h" |
| 16 #include "ui/gfx/gl/gl_context.h" |
| 17 #include "ui/gfx/gl/gl_implementation.h" |
| 18 #include "ui/gfx/gl/gl_surface_egl.h" |
| 19 #include "ui/gfx/native_widget_types.h" |
| 20 |
| 21 namespace { |
| 22 |
| 23 // We are backed by an Pbuffer offscreen surface through which ANGLE provides |
| 24 // a handle to the corresponding render target texture through an extension. |
| 25 class PbufferImageTransportSurface |
| 26 : public gfx::GLSurfaceAdapter, |
| 27 public ImageTransportSurface, |
| 28 public base::SupportsWeakPtr<PbufferImageTransportSurface> { |
| 29 public: |
| 30 PbufferImageTransportSurface(GpuChannelManager* manager, |
| 31 int32 render_view_id, |
| 32 int32 renderer_id, |
| 33 int32 command_buffer_id); |
| 34 |
| 35 // GLSurface implementation |
| 36 virtual bool Initialize(); |
| 37 virtual void Destroy(); |
| 38 virtual bool IsOffscreen(); |
| 39 virtual bool SwapBuffers(); |
| 40 |
| 41 protected: |
| 42 // ImageTransportSurface implementation |
| 43 virtual void OnNewSurfaceACK(uint64 surface_id, |
| 44 TransportDIB::Handle shm_handle) OVERRIDE; |
| 45 virtual void OnBuffersSwappedACK() OVERRIDE; |
| 46 virtual void OnResizeViewACK() OVERRIDE; |
| 47 virtual void OnResize(gfx::Size size) OVERRIDE; |
| 48 |
| 49 private: |
| 50 virtual ~PbufferImageTransportSurface(); |
| 51 void SendBuffersSwapped(); |
| 52 |
| 53 scoped_ptr<ImageTransportHelper> helper_; |
| 54 |
| 55 DISALLOW_COPY_AND_ASSIGN(PbufferImageTransportSurface); |
| 56 }; |
| 57 |
| 58 PbufferImageTransportSurface::PbufferImageTransportSurface( |
| 59 GpuChannelManager* manager, |
| 60 int32 render_view_id, |
| 61 int32 renderer_id, |
| 62 int32 command_buffer_id) |
| 63 : GLSurfaceAdapter(new gfx::PbufferGLSurfaceEGL(false, |
| 64 gfx::Size(1, 1))) { |
| 65 helper_.reset(new ImageTransportHelper(this, |
| 66 manager, |
| 67 render_view_id, |
| 68 renderer_id, |
| 69 command_buffer_id, |
| 70 gfx::kNullPluginWindow)); |
| 71 } |
| 72 |
| 73 PbufferImageTransportSurface::~PbufferImageTransportSurface() { |
| 74 Destroy(); |
| 75 } |
| 76 |
| 77 bool PbufferImageTransportSurface::Initialize() { |
| 78 // Only support this path if the GL implementation is ANGLE. |
| 79 // IO surfaces will not work with, for example, OSMesa software renderer |
| 80 // GL contexts. |
| 81 if (gfx::GetGLImplementation() != gfx::kGLImplementationEGLGLES2) |
| 82 return false; |
| 83 |
| 84 if (!helper_->Initialize()) |
| 85 return false; |
| 86 |
| 87 return GLSurfaceAdapter::Initialize(); |
| 88 } |
| 89 |
| 90 void PbufferImageTransportSurface::Destroy() { |
| 91 helper_->Destroy(); |
| 92 GLSurfaceAdapter::Destroy(); |
| 93 } |
| 94 |
| 95 bool PbufferImageTransportSurface::IsOffscreen() { |
| 96 return false; |
| 97 } |
| 98 |
| 99 bool PbufferImageTransportSurface::SwapBuffers() { |
| 100 HANDLE surface_handle = GetShareHandle(); |
| 101 if (!surface_handle) |
| 102 return false; |
| 103 |
| 104 helper_->DeferToFence(base::Bind( |
| 105 &PbufferImageTransportSurface::SendBuffersSwapped, |
| 106 AsWeakPtr())); |
| 107 |
| 108 return true; |
| 109 } |
| 110 |
| 111 void PbufferImageTransportSurface::SendBuffersSwapped() { |
| 112 GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params params; |
| 113 params.surface_id = reinterpret_cast<int64>(GetShareHandle()); |
| 114 params.size = GetSize(); |
| 115 helper_->SendAcceleratedSurfaceBuffersSwapped(params); |
| 116 |
| 117 helper_->SetScheduled(false); |
| 118 } |
| 119 |
| 120 void PbufferImageTransportSurface::OnBuffersSwappedACK() { |
| 121 helper_->SetScheduled(true); |
| 122 } |
| 123 |
| 124 void PbufferImageTransportSurface::OnNewSurfaceACK( |
| 125 uint64 surface_id, |
| 126 TransportDIB::Handle shm_handle) { |
| 127 NOTIMPLEMENTED(); |
| 128 } |
| 129 |
| 130 void PbufferImageTransportSurface::OnResizeViewACK() { |
| 131 NOTIMPLEMENTED(); |
| 132 } |
| 133 |
| 134 void PbufferImageTransportSurface::OnResize(gfx::Size size) { |
| 135 Resize(size); |
| 136 } |
| 137 |
| 138 } // namespace anonymous |
| 139 |
| 140 // static |
| 141 scoped_refptr<gfx::GLSurface> ImageTransportSurface::CreateSurface( |
| 142 GpuChannelManager* manager, |
| 143 int32 render_view_id, |
| 144 int32 renderer_id, |
| 145 int32 command_buffer_id, |
| 146 gfx::PluginWindowHandle handle) { |
| 147 scoped_refptr<gfx::GLSurface> surface; |
| 148 |
| 149 base::win::OSInfo* os_info = base::win::OSInfo::GetInstance(); |
| 150 |
| 151 if (gfx::GetGLImplementation() == gfx::kGLImplementationEGLGLES2 && |
| 152 os_info->version() >= base::win::VERSION_VISTA) { |
| 153 surface = new PbufferImageTransportSurface(manager, |
| 154 render_view_id, |
| 155 renderer_id, |
| 156 command_buffer_id); |
| 157 } else { |
| 158 surface = gfx::GLSurface::CreateViewGLSurface(false, handle); |
| 159 if (!surface.get()) |
| 160 return NULL; |
| 161 |
| 162 surface = new PassThroughImageTransportSurface(manager, |
| 163 render_view_id, |
| 164 renderer_id, |
| 165 command_buffer_id, |
| 166 surface.get()); |
| 167 } |
| 168 |
| 169 if (surface->Initialize()) |
| 170 return surface; |
| 171 else |
| 172 return NULL; |
| 173 } |
| 174 |
| 175 #endif // ENABLE_GPU |
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