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Commit b22f0861 authored by Yiwei Zhang's avatar Yiwei Zhang
Browse files

Clean up egl_connection_t::shouldUseAngle 

If android::GraphicsEnv::getInstance().shouldUseAngle() returns false,
then the ANGLE driver loading can bail out early. The choice should be
made before the app starts loading the driver. If there's a change in
the driver choice during driver loading, then it shouldn't affect the
current loading process, but the next app fresh launch, otherwise crash
will happen for the 3-part driver loading.

Test: build
Change-Id: I9ea202214bdbc4b70d068137c62d2b1f8ac8ebb5
parent 260d9625

opengl/libs/EGL/Loader.cpp

+6 −16
Original line number Diff line number Diff line
@@ -222,13 +222,6 @@ void* Loader::open(egl_connection_t* cnx) 
        return cnx->dso;

    }



    // Check if we should use ANGLE early, so loading each driver doesn't require repeated queries.

    if (android::GraphicsEnv::getInstance().shouldUseAngle()) {

        cnx->shouldUseAngle = true;

    } else {

        cnx->shouldUseAngle = false;

    }



    // Firstly, try to load ANGLE driver.

    driver_t* hnd = attempt_to_load_angle(cnx);

    if (!hnd) {
@@ -317,7 +310,6 @@ void Loader::close(egl_connection_t* cnx) 
    delete hnd;

    cnx->dso = nullptr;



    cnx->shouldUseAngle = false;

    cnx->useAngle = false;



    if (cnx->vendorEGL) {
@@ -511,14 +503,7 @@ static void* load_angle_from_namespace(const char* kind, android_namespace_t* ns 
}



static void* load_angle(const char* kind, android_namespace_t* ns, egl_connection_t* cnx) {

    void* so = nullptr;



    if ((cnx->shouldUseAngle) || android::GraphicsEnv::getInstance().shouldUseAngle()) {

        so = load_angle_from_namespace(kind, ns);

        cnx->shouldUseAngle = true;

    } else {

        cnx->shouldUseAngle = false;

    }

    void* so = load_angle_from_namespace(kind, ns);



    if (so) {

        ALOGV("Loaded ANGLE %s library for '%s' (instead of native)", kind,
@@ -595,6 +580,11 @@ static void* load_updated_driver(const char* kind, android_namespace_t* ns) { 


Loader::driver_t* Loader::attempt_to_load_angle(egl_connection_t* cnx) {

    ATRACE_CALL();



    if (!android::GraphicsEnv::getInstance().shouldUseAngle()) {

        return nullptr;

    }



    android_namespace_t* ns = android::GraphicsEnv::getInstance().getAngleNamespace();

    if (!ns) {

        return nullptr;

opengl/libs/EGL/egldefs.h

+0 −1
Original line number Diff line number Diff line
@@ -81,7 +81,6 @@ struct egl_connection_t { 
    void*               libGles2;



    bool                systemDriverUnloaded;

    bool                shouldUseAngle; // Should we attempt to load ANGLE

    bool                useAngle;       // Was ANGLE successfully loaded

    EGLint              angleBackend;

    void*               vendorEGL;