1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
|
// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "android_webview/browser/aw_render_thread_context_provider.h"
#include "base/bind.h"
#include "base/callback_helpers.h"
#include "base/lazy_instance.h"
#include "base/trace_event/trace_event.h"
#include "cc/output/managed_memory_policy.h"
#include "gpu/blink/webgraphicscontext3d_impl.h"
#include "gpu/command_buffer/client/gl_in_process_context.h"
#include "gpu/command_buffer/client/gles2_implementation.h"
#include "gpu/command_buffer/client/gles2_lib.h"
#include "gpu/skia_bindings/gl_bindings_skia_cmd_buffer.h"
#include "third_party/skia/include/gpu/GrContext.h"
#include "third_party/skia/include/gpu/gl/GrGLInterface.h"
namespace android_webview {
namespace {
// Singleton used to initialize and terminate the gles2 library.
class GLES2Initializer {
public:
GLES2Initializer() { gles2::Initialize(); }
~GLES2Initializer() { gles2::Terminate(); }
private:
DISALLOW_COPY_AND_ASSIGN(GLES2Initializer);
};
base::LazyInstance<GLES2Initializer> g_gles2_initializer =
LAZY_INSTANCE_INITIALIZER;
} // namespace
// static
scoped_refptr<AwRenderThreadContextProvider>
AwRenderThreadContextProvider::Create(
scoped_refptr<gfx::GLSurface> surface,
scoped_refptr<gpu::InProcessCommandBuffer::Service> service) {
return new AwRenderThreadContextProvider(surface, service);
}
AwRenderThreadContextProvider::AwRenderThreadContextProvider(
scoped_refptr<gfx::GLSurface> surface,
scoped_refptr<gpu::InProcessCommandBuffer::Service> service)
: destroyed_(false) {
DCHECK(main_thread_checker_.CalledOnValidThread());
blink::WebGraphicsContext3D::Attributes attributes;
attributes.antialias = false;
attributes.depth = false;
attributes.stencil = false;
attributes.shareResources = true;
attributes.noAutomaticFlushes = true;
gpu::gles2::ContextCreationAttribHelper attribs_for_gles2;
gpu_blink::WebGraphicsContext3DImpl::ConvertAttributes(attributes,
&attribs_for_gles2);
attribs_for_gles2.lose_context_when_out_of_memory = true;
context_.reset(gpu::GLInProcessContext::Create(
service,
surface,
surface->IsOffscreen(),
gfx::kNullAcceleratedWidget,
surface->GetSize(),
NULL /* share_context */,
false /* share_resources */,
attribs_for_gles2,
gfx::PreferDiscreteGpu,
gpu::GLInProcessContextSharedMemoryLimits(),
nullptr,
nullptr));
context_->SetContextLostCallback(base::Bind(
&AwRenderThreadContextProvider::OnLostContext, base::Unretained(this)));
capabilities_.gpu = context_->GetImplementation()->capabilities();
}
AwRenderThreadContextProvider::~AwRenderThreadContextProvider() {
DCHECK(main_thread_checker_.CalledOnValidThread());
}
bool AwRenderThreadContextProvider::BindToCurrentThread() {
// This is called on the thread the context will be used.
DCHECK(main_thread_checker_.CalledOnValidThread());
return true;
}
cc::ContextProvider::Capabilities
AwRenderThreadContextProvider::ContextCapabilities() {
DCHECK(main_thread_checker_.CalledOnValidThread());
return capabilities_;
}
gpu::gles2::GLES2Interface* AwRenderThreadContextProvider::ContextGL() {
DCHECK(main_thread_checker_.CalledOnValidThread());
return context_->GetImplementation();
}
gpu::ContextSupport* AwRenderThreadContextProvider::ContextSupport() {
DCHECK(main_thread_checker_.CalledOnValidThread());
return context_->GetImplementation();
}
static void BindGrContextCallback(const GrGLInterface* interface) {
cc::ContextProvider* context_provider =
reinterpret_cast<AwRenderThreadContextProvider*>(
interface->fCallbackData);
gles2::SetGLContext(context_provider->ContextGL());
}
class GrContext* AwRenderThreadContextProvider::GrContext() {
DCHECK(main_thread_checker_.CalledOnValidThread());
if (gr_context_)
return gr_context_.get();
// The GrGLInterface factory will make GL calls using the C GLES2 interface.
// Make sure the gles2 library is initialized first on exactly one thread.
g_gles2_initializer.Get();
gles2::SetGLContext(ContextGL());
skia::RefPtr<GrGLInterface> interface =
skia::AdoptRef(skia_bindings::CreateCommandBufferSkiaGLBinding());
interface->fCallback = BindGrContextCallback;
interface->fCallbackData = reinterpret_cast<GrGLInterfaceCallbackData>(this);
gr_context_ = skia::AdoptRef(GrContext::Create(
kOpenGL_GrBackend, reinterpret_cast<GrBackendContext>(interface.get())));
return gr_context_.get();
}
void AwRenderThreadContextProvider::InvalidateGrContext(uint32_t state) {
DCHECK(main_thread_checker_.CalledOnValidThread());
if (gr_context_)
gr_context_.get()->resetContext(state);
}
void AwRenderThreadContextProvider::SetupLock() {
context_->SetLock(&context_lock_);
}
base::Lock* AwRenderThreadContextProvider::GetLock() {
return &context_lock_;
}
bool AwRenderThreadContextProvider::IsContextLost() {
DCHECK(main_thread_checker_.CalledOnValidThread());
return destroyed_;
}
void AwRenderThreadContextProvider::VerifyContexts() {
}
void AwRenderThreadContextProvider::DeleteCachedResources() {
DCHECK(main_thread_checker_.CalledOnValidThread());
if (gr_context_) {
TRACE_EVENT_INSTANT0("gpu", "GrContext::freeGpuResources",
TRACE_EVENT_SCOPE_THREAD);
gr_context_->freeGpuResources();
}
}
bool AwRenderThreadContextProvider::DestroyedOnMainThread() {
DCHECK(main_thread_checker_.CalledOnValidThread());
return destroyed_;
}
void AwRenderThreadContextProvider::SetLostContextCallback(
const LostContextCallback& lost_context_callback) {
lost_context_callback_ = lost_context_callback;
}
void AwRenderThreadContextProvider::SetMemoryPolicyChangedCallback(
const MemoryPolicyChangedCallback& memory_policy_changed_callback) {
// There's no memory manager for the in-process implementation.
}
void AwRenderThreadContextProvider::OnLostContext() {
DCHECK(main_thread_checker_.CalledOnValidThread());
if (destroyed_)
return;
destroyed_ = true;
if (!lost_context_callback_.is_null())
base::ResetAndReturn(&lost_context_callback_).Run();
if (gr_context_)
gr_context_->abandonContext();
}
} // namespace android_webview
|
