EGLBoolean EglDisplayImpl::ChooseConfigs(const EGLint* attribs,
EGLConfig* configs,
EGLint configs_size,
EGLint* num_config) {
int count = 0;
EglConfigImpl dummy(attribs);
const EGLConfig egl_config = dummy.GetKey();
if (egl_config != reinterpret_cast<EGLConfig>(EGL_DONT_CARE)) {
const EglConfigImpl* cfg = GetConfig(egl_config);
if (cfg && configs_size > 0) {
configs[0] = cfg->GetKey();
count = 1;
} else {
count = 0;
}
} else {
for (ConfigSet::iterator i = configs_.begin(); i != configs_.end(); ++i) {
if (i->Matches(dummy)) {
if (configs) {
if (count >= configs_size) {
break;
}
configs[count] = i->GetKey();
}
++count;
}
}
}
if (num_config) {
*num_config = count;
}
return EGL_TRUE;
}
EGLBoolean EglDisplayImpl::GetConfigs(EGLConfig* configs, EGLint config_size,
EGLint* num_config) {
const EGLint total_configs = GetNumConfigs();
if (!configs) {
*num_config = total_configs;
return EGL_TRUE;
}
int count = 0;
const EGLint max_configs = std::min(total_configs, config_size);
for (ConfigSet::iterator i = configs_.begin(); i != configs_.end(); ++i) {
if (count >= max_configs) {
break;
}
configs[count] = i->GetKey();
++count;
}
LOG_ALWAYS_FATAL_IF(!num_config, "num_config must be non-NULL");
*num_config = count;
return EGL_TRUE;
}
void EglDisplayImpl::Initialize() {
Mutex::Autolock mutex(&lock_);
if (initialized_) {
return;
}
window_ = Native::CreateNativeWindow();
LOG_ALWAYS_FATAL_IF(!window_, "Could not create native window.");
EGLConfig cfg = NULL;
for (ConfigSet::iterator it = configs_.begin(); it != configs_.end(); ++it) {
const EGLint r = it->GetValue(EGL_RED_SIZE);
const EGLint g = it->GetValue(EGL_GREEN_SIZE);
const EGLint b = it->GetValue(EGL_BLUE_SIZE);
if (r > 0 && g > 0 && b > 0) {
cfg = it->GetKey();
break;
}
}
EGLint err = 0;
global_context_ = EglContextImpl::Create(kDefaultDisplay, cfg, NULL, 2, &err);
// Bind the window surface here in order for the compositor to be associated
// with the correct context. (The compositor associates itself to the first
// surface that is bound.)
ContextPtr ctx = contexts_.Get(global_context_);
Native::BindNativeWindow(window_, ctx->GetNativeContext());
// Force the GlesContext owned by the global context to be initialized at
// least once.
EglThreadInfo& info = EglThreadInfo::GetInstance();
info.SetCurrentContext(ctx);
ctx->GetGlesContext()->OnMakeCurrent();
info.SetCurrentContext(ContextPtr());
initialized_ = true;
}