bool GLEnv::InitWithNewContext() {
if (IsInitialized()) {
LOGE("GLEnv: Attempting to reinitialize environment!");
return false;
}
display_ = eglGetDisplay(EGL_DEFAULT_DISPLAY);
if (CheckEGLError("eglGetDisplay")) return false;
EGLint majorVersion;
EGLint minorVersion;
eglInitialize(display(), &majorVersion, &minorVersion);
if (CheckEGLError("eglInitialize")) return false;
initialized_ = true;
// Configure context/surface
EGLConfig config;
EGLint numConfigs = -1;
// TODO(renn): Do we need the window bit here?
// TODO: Currently choosing the config that includes all
// This is not needed if the encoding is not being used
EGLint configAttribs[] = {
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_RECORDABLE_ANDROID, EGL_TRUE,
EGL_NONE
};
eglChooseConfig(display(), configAttribs, &config, 1, &numConfigs);
if (numConfigs < 1) {
LOGE("GLEnv::Init: No suitable EGL configuration found!");
return false;
}
// Create dummy surface using a SurfaceTexture
sp<SurfaceTexture> st = new SurfaceTexture(0, false);
window_ = new SurfaceTextureClient(st);
surfaces_[0] = SurfaceWindowPair(eglCreateWindowSurface(display(), config, window_.get(), NULL), NULL);
if (CheckEGLError("eglCreateWindowSurface")) return false;
// Create context
EGLint context_attribs[] = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE };
contexts_[0] = eglCreateContext(display(),
config,
EGL_NO_CONTEXT,
context_attribs);
if (CheckEGLError("eglCreateContext")) return false;
created_context_ = created_surface_ = true;
return true;
}
GLEnv::~GLEnv() {
// Destroy surfaces
for (std::map<int, SurfaceWindowPair>::iterator it = surfaces_.begin();
it != surfaces_.end();
++it) {
if (it->first != 0 || created_surface_) {
eglDestroySurface(display(), it->second.first);
if (it->second.second) {
it->second.second->Destroy();
delete it->second.second;
}
}
}
// Destroy contexts
for (std::map<int, EGLContext>::iterator it = contexts_.begin();
it != contexts_.end();
++it) {
if (it->first != 0 || created_context_)
eglDestroyContext(display(), it->second);
}
// Destroy attached shaders and frames
STLDeleteValues(&attached_shaders_);
STLDeleteValues(&attached_vframes_);
// Destroy display
if (initialized_)
eglTerminate(display());
// Log error if this did not work
if (CheckEGLError("TearDown!"))
ALOGE("GLEnv: Error tearing down GL Environment!");
}
bool GLEnv::Deactivate() {
eglMakeCurrent(display(), EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
return !CheckEGLError("eglMakeCurrent");
}
bool GLEnv::SwapBuffers() {
const bool result = eglSwapBuffers(display(), surface()) == EGL_TRUE;
return !CheckEGLError("eglSwapBuffers") && result;
}
