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1 //
2 // Copyright 2015 The ANGLE Project Authors. All rights reserved.
3 // Use of this source code is governed by a BSD-style license that can be
4 // found in the LICENSE file.
5 //
6 
7 // Device.cpp: Implements the egl::Device class, representing the abstract
8 // device. Implements EGLDevice.
9 
10 #include "libANGLE/Device.h"
11 
12 #include <iterator>
13 
14 #include <EGL/eglext.h>
15 #include <platform/Platform.h>
16 
17 #include "anglebase/no_destructor.h"
18 #include "common/debug.h"
19 #include "common/platform.h"
20 #include "libANGLE/renderer/DeviceImpl.h"
21 
22 #if defined(ANGLE_ENABLE_D3D11)
23 #    include "libANGLE/renderer/d3d/DeviceD3D.h"
24 #endif
25 
26 namespace egl
27 {
28 
29 template <typename T>
GenerateExtensionsString(const T & extensions)30 static std::string GenerateExtensionsString(const T &extensions)
31 {
32     std::vector<std::string> extensionsVector = extensions.getStrings();
33 
34     std::ostringstream stream;
35     std::copy(extensionsVector.begin(), extensionsVector.end(),
36               std::ostream_iterator<std::string>(stream, " "));
37     return stream.str();
38 }
39 
40 typedef std::set<egl::Device *> DeviceSet;
GetDeviceSet()41 static DeviceSet *GetDeviceSet()
42 {
43     static angle::base::NoDestructor<DeviceSet> devices;
44     return devices.get();
45 }
46 
47 // Static factory methods
CreateDevice(EGLint deviceType,void * nativeDevice,Device ** outDevice)48 egl::Error Device::CreateDevice(EGLint deviceType, void *nativeDevice, Device **outDevice)
49 {
50     *outDevice = nullptr;
51 
52     std::unique_ptr<rx::DeviceImpl> newDeviceImpl;
53 
54 #if defined(ANGLE_ENABLE_D3D11)
55     if (deviceType == EGL_D3D11_DEVICE_ANGLE)
56     {
57         newDeviceImpl.reset(new rx::DeviceD3D(deviceType, nativeDevice));
58     }
59 #endif
60 
61     // Note that creating an EGL device from inputted D3D9 parameters isn't currently supported
62 
63     if (newDeviceImpl == nullptr)
64     {
65         return EglBadAttribute();
66     }
67 
68     ANGLE_TRY(newDeviceImpl->initialize());
69     *outDevice = new Device(nullptr, newDeviceImpl.release());
70 
71     return NoError();
72 }
73 
IsValidDevice(const Device * device)74 bool Device::IsValidDevice(const Device *device)
75 {
76     const DeviceSet *deviceSet = GetDeviceSet();
77     return deviceSet->find(const_cast<Device *>(device)) != deviceSet->end();
78 }
79 
Device(Display * owningDisplay,rx::DeviceImpl * impl)80 Device::Device(Display *owningDisplay, rx::DeviceImpl *impl)
81     : mLabel(nullptr), mOwningDisplay(owningDisplay), mImplementation(impl)
82 {
83     ASSERT(GetDeviceSet()->find(this) == GetDeviceSet()->end());
84     GetDeviceSet()->insert(this);
85     initDeviceExtensions();
86 }
87 
~Device()88 Device::~Device()
89 {
90     ASSERT(GetDeviceSet()->find(this) != GetDeviceSet()->end());
91     GetDeviceSet()->erase(this);
92 }
93 
setLabel(EGLLabelKHR label)94 void Device::setLabel(EGLLabelKHR label)
95 {
96     mLabel = label;
97 }
98 
getLabel() const99 EGLLabelKHR Device::getLabel() const
100 {
101     return mLabel;
102 }
103 
getAttribute(EGLint attribute,EGLAttrib * value)104 Error Device::getAttribute(EGLint attribute, EGLAttrib *value)
105 {
106     void *nativeAttribute = nullptr;
107     egl::Error error =
108         getImplementation()->getAttribute(getOwningDisplay(), attribute, &nativeAttribute);
109     *value = reinterpret_cast<EGLAttrib>(nativeAttribute);
110     return error;
111 }
112 
getType()113 EGLint Device::getType()
114 {
115     return getImplementation()->getType();
116 }
117 
initDeviceExtensions()118 void Device::initDeviceExtensions()
119 {
120     mImplementation->generateExtensions(&mDeviceExtensions);
121     mDeviceExtensionString = GenerateExtensionsString(mDeviceExtensions);
122 }
123 
getExtensions() const124 const DeviceExtensions &Device::getExtensions() const
125 {
126     return mDeviceExtensions;
127 }
128 
getExtensionString() const129 const std::string &Device::getExtensionString() const
130 {
131     return mDeviceExtensionString;
132 }
133 }  // namespace egl
134