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
|
#include "map_renderer.hpp"
#include <mbgl/renderer/renderer.hpp>
#include <mbgl/util/shared_thread_pool.hpp>
#include <string>
#include "attach_env.hpp"
#include "android_renderer_backend.hpp"
#include "map_renderer_runnable.hpp"
#include "file_source.hpp"
namespace mbgl {
namespace android {
MapRenderer::MapRenderer(jni::JNIEnv& _env, jni::Object<MapRenderer> obj,
jni::Object<FileSource> _fileSource, jni::jfloat pixelRatio_,
jni::String programCacheDir_)
: javaPeer(SeizeGenericWeakRef(_env, jni::Object<MapRenderer>(jni::NewWeakGlobalRef(_env, obj.Get()).release()))), pixelRatio(pixelRatio_)
, fileSource(FileSource::getDefaultFileSource(_env, _fileSource))
, programCacheDir(jni::Make<std::string>(_env, programCacheDir_))
, threadPool(sharedThreadPool())
, mailbox(std::make_shared<Mailbox>(*this)) {
}
MapRenderer::~MapRenderer() = default;
void MapRenderer::reset() {
assert (renderer);
renderer.reset();
// Lock to make sure there is no concurrent initialisation on the gl thread
std::lock_guard<std::mutex> lock(initialisationMutex);
rendererObserver.reset();
}
ActorRef<Renderer> MapRenderer::actor() const {
return *rendererRef;
}
void MapRenderer::schedule(std::weak_ptr<Mailbox> scheduled) {
// Create a runnable and schedule it on the gl thread
android::UniqueEnv _env = android::AttachEnv();
auto runnable = std::make_unique<MapRendererRunnable>(*_env, std::move(scheduled));
static auto queueEvent = javaClass.GetMethod<void(
jni::Object<MapRendererRunnable>)>(*_env, "queueEvent");
javaPeer->Call(*_env, queueEvent, runnable->getPeer());
// Release the object as it will be destroyed on GC of the Java Peer
runnable.release();
}
void MapRenderer::requestRender() {
android::UniqueEnv _env = android::AttachEnv();
static auto onInvalidate = javaClass.GetMethod<void()>(*_env, "requestRender");
javaPeer->Call(*_env, onInvalidate);
}
void MapRenderer::update(std::shared_ptr<UpdateParameters> params) {
// Lock on the parameters
std::lock_guard<std::mutex> lock(updateMutex);
updateParameters = std::move(params);
}
void MapRenderer::setObserver(std::shared_ptr<RendererObserver> _rendererObserver) {
// Lock as the initialization can come from the main thread or the GL thread first
std::lock_guard<std::mutex> lock(initialisationMutex);
rendererObserver = std::move(_rendererObserver);
// Set the new observer on the Renderer implementation
if (renderer) {
renderer->setObserver(rendererObserver.get());
}
}
// Called on OpenGL thread //
void MapRenderer::render(JNIEnv&) {
assert (renderer);
std::shared_ptr<UpdateParameters> params;
{
// Lock on the parameters
std::unique_lock<std::mutex> lock(updateMutex);
if (!updateParameters) return;
// Hold on to the update parameters during render
params = updateParameters;
}
// Activate the backend
BackendScope backendGuard { *backend };
// Ensure that the "current" scheduler on the render thread is
// this scheduler.
Scheduler::SetCurrent(this);
if (framebufferSizeChanged) {
backend->updateViewPort();
framebufferSizeChanged = false;
}
renderer->render(*params);
}
void MapRenderer::onSurfaceCreated(JNIEnv&) {
// Lock as the initialization can come from the main thread or the GL thread first
std::lock_guard<std::mutex> lock(initialisationMutex);
// The android system will have already destroyed the underlying
// GL resources if this is not the first intialization and an
// attempt to clean them up will fail
if (backend) backend->markContextLost();
if (renderer) renderer->markContextLost();
// Reset in opposite order
renderer.reset();
backend.reset();
// Create the new backend and renderer
backend = std::make_unique<AndroidRendererBackend>();
renderer = std::make_unique<Renderer>(*backend, pixelRatio, fileSource, *threadPool,
GLContextMode::Unique, programCacheDir);
rendererRef = std::make_unique<ActorRef<Renderer>>(*renderer, mailbox);
// Set the observer on the new Renderer implementation
if (rendererObserver) {
renderer->setObserver(rendererObserver.get());
}
}
void MapRenderer::onSurfaceChanged(JNIEnv&, jint width, jint height) {
backend->resizeFramebuffer(width, height);
framebufferSizeChanged = true;
requestRender();
}
// Static methods //
jni::Class<MapRenderer> MapRenderer::javaClass;
void MapRenderer::registerNative(jni::JNIEnv& env) {
// Lookup the class
MapRenderer::javaClass = *jni::Class<MapRenderer>::Find(env).NewGlobalRef(env).release();
#define METHOD(MethodPtr, name) jni::MakeNativePeerMethod<decltype(MethodPtr), (MethodPtr)>(name)
// Register the peer
jni::RegisterNativePeer<MapRenderer>(env, MapRenderer::javaClass, "nativePtr",
std::make_unique<MapRenderer, JNIEnv&, jni::Object<MapRenderer>, jni::Object<FileSource>, jni::jfloat, jni::String>,
"nativeInitialize", "finalize",
METHOD(&MapRenderer::render, "nativeRender"),
METHOD(&MapRenderer::onSurfaceCreated,
"nativeOnSurfaceCreated"),
METHOD(&MapRenderer::onSurfaceChanged,
"nativeOnSurfaceChanged"));
}
MapRenderer& MapRenderer::getNativePeer(JNIEnv& env, jni::Object<MapRenderer> jObject) {
static auto field = MapRenderer::javaClass.GetField<jlong>(env, "nativePtr");
MapRenderer* mapRenderer = reinterpret_cast<MapRenderer*>(jObject.Get(env, field));
assert(mapRenderer != nullptr);
return *mapRenderer;
}
} // namespace android
} // namespace mbgl
|
