refactor EGL source code

no changes is functionality. split various objects into their own files.
make egl_display objec's lock internal.
diff --git a/opengl/libs/EGL/egl.cpp b/opengl/libs/EGL/egl.cpp
index aabba28..1aca4c3 100644
--- a/opengl/libs/EGL/egl.cpp
+++ b/opengl/libs/EGL/egl.cpp
@@ -17,14 +17,9 @@
 #include <ctype.h>
 #include <stdlib.h>
 #include <string.h>
-#include <errno.h>
-#include <dlfcn.h>
 
-#include <sys/ioctl.h>
-
-#ifdef HAVE_ANDROID_OS
-#include <linux/android_pmem.h>
-#endif
+#include <hardware/gralloc.h>
+#include <system/window.h>
 
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
@@ -36,266 +31,41 @@
 #include <cutils/properties.h>
 #include <cutils/memory.h>
 
-#include <utils/SortedVector.h>
-#include <utils/KeyedVector.h>
 #include <utils/String8.h>
 
-#include <ui/egl/android_natives.h>
-
-#include "hooks.h"
 #include "egl_impl.h"
-#include "Loader.h"
-#include "glesv2dbg.h"
 #include "egl_tls.h"
+#include "glesv2dbg.h"
+#include "hooks.h"
+#include "Loader.h"
 
-#define setError(_e, _r) setErrorEtc(__FUNCTION__, __LINE__, _e, _r)
+#include "egl_display.h"
+#include "egl_object.h"
 
 // ----------------------------------------------------------------------------
 namespace android {
 // ----------------------------------------------------------------------------
 
-#define VERSION_MAJOR 1
-#define VERSION_MINOR 4
-static char const * const gVendorString     = "Android";
-static char const * const gVersionString    = "1.4 Android META-EGL";
-static char const * const gClientApiString  = "OpenGL ES";
-static char const * const gExtensionString  =
-        "EGL_KHR_image "
-        "EGL_KHR_image_base "
-        "EGL_KHR_image_pixmap "
-        "EGL_KHR_gl_texture_2D_image "
-        "EGL_KHR_gl_texture_cubemap_image "
-        "EGL_KHR_gl_renderbuffer_image "
-        "EGL_KHR_fence_sync "
-        "EGL_ANDROID_image_native_buffer "
-        "EGL_ANDROID_swap_rectangle "
-        ;
+egl_connection_t gEGLImpl[IMPL_NUM_IMPLEMENTATIONS];
+gl_hooks_t gHooks[2][IMPL_NUM_IMPLEMENTATIONS];
+gl_hooks_t gHooksNoContext;
+pthread_key_t gGLWrapperKey = -1;
 
 // ----------------------------------------------------------------------------
 
-class egl_object_t;
-struct egl_display_t;
-static egl_display_t* get_display(EGLDisplay dpy);
-
-struct egl_config_t {
-    egl_config_t() {}
-    egl_config_t(int impl, EGLConfig config)
-        : impl(impl), config(config), configId(0), implConfigId(0) { }
-    int         impl;           // the implementation this config is for
-    EGLConfig   config;         // the implementation's EGLConfig
-    EGLint      configId;       // our CONFIG_ID
-    EGLint      implConfigId;   // the implementation's CONFIG_ID
-    inline bool operator < (const egl_config_t& rhs) const {
-        if (impl < rhs.impl) return true;
-        if (impl > rhs.impl) return false;
-        return config < rhs.config;
-    }
-};
-
-struct egl_display_t {
-    enum { NOT_INITIALIZED, INITIALIZED, TERMINATED };
-
-    struct strings_t {
-        char const * vendor;
-        char const * version;
-        char const * clientApi;
-        char const * extensions;
-    };
-
-    struct DisplayImpl {
-        DisplayImpl() : dpy(EGL_NO_DISPLAY), config(0),
-                        state(NOT_INITIALIZED), numConfigs(0) { }
-        EGLDisplay  dpy;
-        EGLConfig*  config;
-        EGLint      state;
-        EGLint      numConfigs;
-        strings_t   queryString;
-    };
-
-    uint32_t        magic;
-    DisplayImpl     disp[IMPL_NUM_IMPLEMENTATIONS];
-    EGLint          numTotalConfigs;
-    egl_config_t*   configs;
-    uint32_t        refs;
-    Mutex           lock;
-
-    SortedVector<egl_object_t*> objects;
-
-    egl_display_t() : magic('_dpy'), numTotalConfigs(0), configs(0), refs(0) { }
-    ~egl_display_t() { magic = 0; }
-    inline bool isReady() const { return (refs > 0); }
-    inline bool isValid() const { return magic == '_dpy'; }
-    inline bool isAlive() const { return isValid(); }
-};
-
-class egl_object_t {
-    egl_display_t *display;
-            volatile int32_t  terminated;
-    mutable volatile int32_t  count;
-
-public:
-    egl_object_t(EGLDisplay dpy) : display(get_display(dpy)), terminated(0), count(1) {
-        Mutex::Autolock _l(display->lock);
-        display->objects.add(this);
-    }
-
-    inline bool isAlive() const { return !terminated; }
-
-private:
-    bool get() {
-        Mutex::Autolock _l(display->lock);
-        if (display->objects.indexOf(this) >= 0) {
-            android_atomic_inc(&count);
-            return true;
-        }
-        return false;
-    }
-
-    bool put() {
-        Mutex::Autolock _l(display->lock);
-        if (android_atomic_dec(&count) == 1) {
-            display->objects.remove(this);
-            return true;
-        }
-        return false;
-    }    
-
-public:
-    template <typename N, typename T>
-    struct LocalRef {
-        N* ref;
-        LocalRef(T o) : ref(0) {
-            N* native = reinterpret_cast<N*>(o);
-            if (o && native->get()) {
-                ref = native;
-            }
-        }
-        ~LocalRef() { 
-            if (ref && ref->put()) {
-                delete ref;
-            }
-        }
-        inline N* get() {
-            return ref;
-        }
-        void acquire() const {
-            if (ref) {
-                android_atomic_inc(&ref->count);
-            }
-        }
-        void release() const {
-            if (ref) {
-                int32_t c = android_atomic_dec(&ref->count);
-                // ref->count cannot be 1 prior atomic_dec because we have
-                // a reference, and if we have one, it means there was
-                // already one before us.
-                LOGE_IF(c==1, "refcount is now 0 in release()");
-            }
-        }
-        void terminate() {
-            if (ref) {
-                ref->terminated = 1;
-                release();
-            }
-        }
-    };
-};
-
-struct egl_surface_t : public egl_object_t
-{
-    typedef egl_object_t::LocalRef<egl_surface_t, EGLSurface> Ref;
-
-    egl_surface_t(EGLDisplay dpy, EGLConfig config, EGLNativeWindowType win,
-            EGLSurface surface, int impl, egl_connection_t const* cnx)
-      : egl_object_t(dpy), dpy(dpy), surface(surface), config(config), win(win), impl(impl), cnx(cnx) {
-    }
-    ~egl_surface_t() {
-    }
-    EGLDisplay                  dpy;
-    EGLSurface                  surface;
-    EGLConfig                   config;
-    sp<ANativeWindow>           win;
-    int                         impl;
-    egl_connection_t const*     cnx;
-};
-
-struct egl_context_t : public egl_object_t
-{
-    typedef egl_object_t::LocalRef<egl_context_t, EGLContext> Ref;
-
-    egl_context_t(EGLDisplay dpy, EGLContext context, EGLConfig config,
-            int impl, egl_connection_t const* cnx, int version)
-    : egl_object_t(dpy), dpy(dpy), context(context), config(config), read(0), draw(0),
-      impl(impl), cnx(cnx), version(version)
-    {
-    }
-    ~egl_context_t()
-    {
-    }
-    EGLDisplay                  dpy;
-    EGLContext                  context;
-    EGLConfig                   config;
-    EGLSurface                  read;
-    EGLSurface                  draw;
-    int                         impl;
-    egl_connection_t const*     cnx;
-    int                         version;
-};
-
-struct egl_image_t : public egl_object_t
-{
-    typedef egl_object_t::LocalRef<egl_image_t, EGLImageKHR> Ref;
-
-    egl_image_t(EGLDisplay dpy, EGLContext context)
-        : egl_object_t(dpy), dpy(dpy), context(context)
-    {
-        memset(images, 0, sizeof(images));
-    }
-    EGLDisplay dpy;
-    EGLContext context;
-    EGLImageKHR images[IMPL_NUM_IMPLEMENTATIONS];
-};
-
-struct egl_sync_t : public egl_object_t
-{
-    typedef egl_object_t::LocalRef<egl_sync_t, EGLSyncKHR> Ref;
-
-    egl_sync_t(EGLDisplay dpy, EGLContext context, EGLSyncKHR sync)
-        : egl_object_t(dpy), dpy(dpy), context(context), sync(sync)
-    {
-    }
-    EGLDisplay dpy;
-    EGLContext context;
-    EGLSyncKHR sync;
-};
-
-typedef egl_surface_t::Ref  SurfaceRef;
-typedef egl_context_t::Ref  ContextRef;
-typedef egl_image_t::Ref    ImageRef;
-typedef egl_sync_t::Ref     SyncRef;
-
-// ----------------------------------------------------------------------------
-
-static egl_connection_t gEGLImpl[IMPL_NUM_IMPLEMENTATIONS];
-static egl_display_t gDisplay[NUM_DISPLAYS];
-static pthread_mutex_t gThreadLocalStorageKeyMutex = PTHREAD_MUTEX_INITIALIZER;
-static pthread_key_t gEGLThreadLocalStorageKey = -1;
-
-// ----------------------------------------------------------------------------
-
-EGLAPI gl_hooks_t gHooks[2][IMPL_NUM_IMPLEMENTATIONS];
-EGLAPI gl_hooks_t gHooksNoContext;
-EGLAPI pthread_key_t gGLWrapperKey = -1;
-
 #if EGL_TRACE
 
 EGLAPI pthread_key_t gGLTraceKey = -1;
 
 // ----------------------------------------------------------------------------
 
-static int gEGLTraceLevel, gEGLDebugLevel;
-static int gEGLApplicationTraceLevel;
-extern EGLAPI gl_hooks_t gHooksTrace, gHooksDebug;
+int gEGLDebugLevel;
+
+static int sEGLTraceLevel;
+static int sEGLApplicationTraceLevel;
+
+extern gl_hooks_t gHooksTrace;
+extern gl_hooks_t gHooksDebug;
 
 static inline void setGlTraceThreadSpecific(gl_hooks_t const *value) {
     pthread_setspecific(gGLTraceKey, value);
@@ -305,12 +75,12 @@
     return static_cast<gl_hooks_t*>(pthread_getspecific(gGLTraceKey));
 }
 
-static void initEglTraceLevel() {
+void initEglTraceLevel() {
     char value[PROPERTY_VALUE_MAX];
     property_get("debug.egl.trace", value, "0");
     int propertyLevel = atoi(value);
-    int applicationLevel = gEGLApplicationTraceLevel;
-    gEGLTraceLevel = propertyLevel > applicationLevel ? propertyLevel : applicationLevel;
+    int applicationLevel = sEGLApplicationTraceLevel;
+    sEGLTraceLevel = propertyLevel > applicationLevel ? propertyLevel : applicationLevel;
 
     property_get("debug.egl.debug_proc", value, "");
     long pid = getpid();
@@ -323,12 +93,12 @@
         if (fgets(cmdline, sizeof(cmdline) - 1, file))
         {
             if (!strcmp(value, cmdline))
-                gEGLDebugLevel = 1;
+                sEGLTraceLevel = 1;
         }
         fclose(file);
     }
 
-    if (gEGLDebugLevel > 0)
+    if (sEGLTraceLevel > 0)
     {
         property_get("debug.egl.debug_port", value, "5039");
         const unsigned short port = (unsigned short)atoi(value);
@@ -341,11 +111,11 @@
     }
 }
 
-static void setGLHooksThreadSpecific(gl_hooks_t const *value) {
-    if (gEGLTraceLevel > 0) {
+void setGLHooksThreadSpecific(gl_hooks_t const *value) {
+    if (sEGLTraceLevel > 0) {
         setGlTraceThreadSpecific(value);
         setGlThreadSpecific(&gHooksTrace);
-    } else if (gEGLDebugLevel > 0 && value != &gHooksNoContext) {
+    } else if (sEGLTraceLevel > 0 && value != &gHooksNoContext) {
         setGlTraceThreadSpecific(value);
         setGlThreadSpecific(&gHooksDebug);
     } else {
@@ -359,186 +129,21 @@
  */
 extern "C"
 void setGLTraceLevel(int level) {
-    gEGLApplicationTraceLevel = level;
+    sEGLApplicationTraceLevel = level;
 }
 
 #else
 
-static inline void setGLHooksThreadSpecific(gl_hooks_t const *value) {
+void setGLHooksThreadSpecific(gl_hooks_t const *value) {
     setGlThreadSpecific(value);
 }
 
 #endif
 
-// ----------------------------------------------------------------------------
-
-static __attribute__((noinline))
-const char *egl_strerror(EGLint err)
-{
-    switch (err){
-        case EGL_SUCCESS:               return "EGL_SUCCESS";
-        case EGL_NOT_INITIALIZED:       return "EGL_NOT_INITIALIZED";
-        case EGL_BAD_ACCESS:            return "EGL_BAD_ACCESS";
-        case EGL_BAD_ALLOC:             return "EGL_BAD_ALLOC";
-        case EGL_BAD_ATTRIBUTE:         return "EGL_BAD_ATTRIBUTE";
-        case EGL_BAD_CONFIG:            return "EGL_BAD_CONFIG";
-        case EGL_BAD_CONTEXT:           return "EGL_BAD_CONTEXT";
-        case EGL_BAD_CURRENT_SURFACE:   return "EGL_BAD_CURRENT_SURFACE";
-        case EGL_BAD_DISPLAY:           return "EGL_BAD_DISPLAY";
-        case EGL_BAD_MATCH:             return "EGL_BAD_MATCH";
-        case EGL_BAD_NATIVE_PIXMAP:     return "EGL_BAD_NATIVE_PIXMAP";
-        case EGL_BAD_NATIVE_WINDOW:     return "EGL_BAD_NATIVE_WINDOW";
-        case EGL_BAD_PARAMETER:         return "EGL_BAD_PARAMETER";
-        case EGL_BAD_SURFACE:           return "EGL_BAD_SURFACE";
-        case EGL_CONTEXT_LOST:          return "EGL_CONTEXT_LOST";
-        default: return "UNKNOWN";
-    }
-}
-
-static __attribute__((noinline))
-void clearTLS() {
-    if (gEGLThreadLocalStorageKey != -1) {
-        tls_t* tls = (tls_t*)pthread_getspecific(gEGLThreadLocalStorageKey);
-        if (tls) {
-            delete tls;
-            pthread_setspecific(gEGLThreadLocalStorageKey, 0);
-        }
-    }
-}
-
-static tls_t* getTLS()
-{
-    tls_t* tls = (tls_t*)pthread_getspecific(gEGLThreadLocalStorageKey);
-    if (tls == 0) {
-        tls = new tls_t;
-        pthread_setspecific(gEGLThreadLocalStorageKey, tls);
-    }
-    return tls;
-}
-
-static inline void clearError() {
-    // This must clear the error from all the underlying EGL implementations as
-    // well as the EGL wrapper layer.
-    eglGetError();
-}
-
-template<typename T>
-static __attribute__((noinline))
-T setErrorEtc(const char* caller, int line, EGLint error, T returnValue) {
-    if (gEGLThreadLocalStorageKey == -1) {
-        pthread_mutex_lock(&gThreadLocalStorageKeyMutex);
-        if (gEGLThreadLocalStorageKey == -1)
-            pthread_key_create(&gEGLThreadLocalStorageKey, NULL);
-        pthread_mutex_unlock(&gThreadLocalStorageKeyMutex);
-    }
-    tls_t* tls = getTLS();
-    if (tls->error != error) {
-        LOGE("%s:%d error %x (%s)", caller, line, error, egl_strerror(error));
-        tls->error = error;
-    }
-    return returnValue;
-}
-
-static __attribute__((noinline))
-GLint getError() {
-    if (gEGLThreadLocalStorageKey == -1)
-        return EGL_SUCCESS;
-    tls_t* tls = (tls_t*)pthread_getspecific(gEGLThreadLocalStorageKey);
-    if (!tls) return EGL_SUCCESS;
-    GLint error = tls->error;
-    tls->error = EGL_SUCCESS;
-    return error;
-}
-
-static __attribute__((noinline))
-void setContext(EGLContext ctx) {
-    if (gEGLThreadLocalStorageKey == -1) {
-        pthread_mutex_lock(&gThreadLocalStorageKeyMutex);
-        if (gEGLThreadLocalStorageKey == -1)
-            pthread_key_create(&gEGLThreadLocalStorageKey, NULL);
-        pthread_mutex_unlock(&gThreadLocalStorageKeyMutex);
-    }
-    tls_t* tls = getTLS();
-    tls->ctx = ctx;
-}
-
-static __attribute__((noinline))
-EGLContext getContext() {
-    if (gEGLThreadLocalStorageKey == -1)
-        return EGL_NO_CONTEXT;
-    tls_t* tls = (tls_t*)pthread_getspecific(gEGLThreadLocalStorageKey);
-    if (!tls) return EGL_NO_CONTEXT;
-    return tls->ctx;
-}
-
 /*****************************************************************************/
 
-template<typename T>
-static __attribute__((noinline))
-int binarySearch(
-        T const sortedArray[], int first, int last, T key)
-{
-    while (first <= last) {
-        int mid = (first + last) / 2;
-        if (sortedArray[mid] < key) {
-            first = mid + 1;
-        } else if (key < sortedArray[mid]) { 
-            last = mid - 1;
-        } else {
-            return mid;
-        }
-    }
-    return -1;
-}
-
-static int cmp_configs(const void* a, const void *b)
-{
-    const egl_config_t& c0 = *(egl_config_t const *)a;
-    const egl_config_t& c1 = *(egl_config_t const *)b;
-    return c0<c1 ? -1 : (c1<c0 ? 1 : 0);
-}
-
-struct extention_map_t {
-    const char* name;
-    __eglMustCastToProperFunctionPointerType address;
-};
-
-static const extention_map_t gExtentionMap[] = {
-    { "eglLockSurfaceKHR",  
-            (__eglMustCastToProperFunctionPointerType)&eglLockSurfaceKHR }, 
-    { "eglUnlockSurfaceKHR", 
-            (__eglMustCastToProperFunctionPointerType)&eglUnlockSurfaceKHR }, 
-    { "eglCreateImageKHR",  
-            (__eglMustCastToProperFunctionPointerType)&eglCreateImageKHR }, 
-    { "eglDestroyImageKHR", 
-            (__eglMustCastToProperFunctionPointerType)&eglDestroyImageKHR }, 
-    { "eglSetSwapRectangleANDROID", 
-            (__eglMustCastToProperFunctionPointerType)&eglSetSwapRectangleANDROID }, 
-};
-
-extern const __eglMustCastToProperFunctionPointerType gExtensionForwarders[MAX_NUMBER_OF_GL_EXTENSIONS];
-
-// accesses protected by gInitDriverMutex
-static DefaultKeyedVector<String8, __eglMustCastToProperFunctionPointerType> gGLExtentionMap;
-static int gGLExtentionSlot = 0;
-
-static void(*findProcAddress(const char* name,
-        const extention_map_t* map, size_t n))() 
-{
-    for (uint32_t i=0 ; i<n ; i++) {
-        if (!strcmp(name, map[i].name)) {
-            return map[i].address;
-        }
-    }
-    return NULL;
-}
-
-// ----------------------------------------------------------------------------
-
 static int gl_no_context() {
-    tls_t* tls = getTLS();
-    if (tls->logCallWithNoContext == EGL_TRUE) {
-        tls->logCallWithNoContext = EGL_FALSE;
+    if (egl_tls_t::logNoContextCall()) {
         LOGE("call to OpenGL ES API with no current context "
              "(logged once per thread)");
     }
@@ -566,40 +171,8 @@
 static pthread_once_t once_control = PTHREAD_ONCE_INIT;
 static int sEarlyInitState = pthread_once(&once_control, &early_egl_init);
 
+// ----------------------------------------------------------------------------
 
-static inline
-egl_display_t* get_display(EGLDisplay dpy)
-{
-    uintptr_t index = uintptr_t(dpy)-1U;
-    return (index >= NUM_DISPLAYS) ? NULL : &gDisplay[index];
-}
-
-template<typename NATIVE, typename EGL>
-static inline NATIVE* egl_to_native_cast(EGL arg) {
-    return reinterpret_cast<NATIVE*>(arg);
-}
-
-static inline
-egl_surface_t* get_surface(EGLSurface surface) {
-    return egl_to_native_cast<egl_surface_t>(surface);
-}
-
-static inline
-egl_context_t* get_context(EGLContext context) {
-    return egl_to_native_cast<egl_context_t>(context);
-}
-
-static inline
-egl_image_t* get_image(EGLImageKHR image) {
-    return egl_to_native_cast<egl_image_t>(image);
-}
-
-static inline
-egl_sync_t* get_sync(EGLSyncKHR sync) {
-    return egl_to_native_cast<egl_sync_t>(sync);
-}
-
-static inline
 egl_display_t* validate_display(EGLDisplay dpy)
 {
     egl_display_t * const dp = get_display(dpy);
@@ -609,7 +182,7 @@
     return dp;
 }
 
-static egl_connection_t* validate_display_config(
+egl_connection_t* validate_display_config(
         EGLDisplay dpy, EGLConfig config,
         egl_display_t const*& dp)
 {
@@ -626,7 +199,7 @@
     return cnx;
 }
 
-static EGLBoolean validate_display_context(EGLDisplay dpy, EGLContext ctx)
+EGLBoolean validate_display_context(EGLDisplay dpy, EGLContext ctx)
 {
     egl_display_t const * const dp = validate_display(dpy);
     if (!dp) return EGL_FALSE;
@@ -637,7 +210,7 @@
     return EGL_TRUE;
 }
 
-static EGLBoolean validate_display_surface(EGLDisplay dpy, EGLSurface surface)
+EGLBoolean validate_display_surface(EGLDisplay dpy, EGLSurface surface)
 {
     egl_display_t const * const dp = validate_display(dpy);
     if (!dp) return EGL_FALSE;
@@ -648,12 +221,14 @@
     return EGL_TRUE;
 }
 
+// ----------------------------------------------------------------------------
+
 EGLImageKHR egl_get_image_for_current_context(EGLImageKHR image)
 {
     ImageRef _i(image);
     if (!_i.get()) return EGL_NO_IMAGE_KHR;
     
-    EGLContext context = getContext();
+    EGLContext context = egl_tls_t::getContext();
     if (context == EGL_NO_CONTEXT || image == EGL_NO_IMAGE_KHR)
         return EGL_NO_IMAGE_KHR;
     
@@ -671,10 +246,7 @@
 //    d->disp[]
 //    egl_init_drivers_locked()
 //
-static pthread_mutex_t gInitDriverMutex = PTHREAD_MUTEX_INITIALIZER;
-
-EGLBoolean egl_init_drivers_locked()
-{
+static EGLBoolean egl_init_drivers_locked() {
     if (sEarlyInitState) {
         // initialized by static ctor. should be set here.
         return EGL_FALSE;
@@ -682,28 +254,15 @@
 
     // get our driver loader
     Loader& loader(Loader::getInstance());
-    
-    // dynamically load all our EGL implementations for all displays
-    // and retrieve the corresponding EGLDisplay
-    // if that fails, don't use this driver.
-    // TODO: currently we only deal with EGL_DEFAULT_DISPLAY
+
+    // dynamically load all our EGL implementations
     egl_connection_t* cnx;
-    egl_display_t* d = &gDisplay[0];
 
     cnx = &gEGLImpl[IMPL_SOFTWARE];
     if (cnx->dso == 0) {
         cnx->hooks[GLESv1_INDEX] = &gHooks[GLESv1_INDEX][IMPL_SOFTWARE];
         cnx->hooks[GLESv2_INDEX] = &gHooks[GLESv2_INDEX][IMPL_SOFTWARE];
         cnx->dso = loader.open(EGL_DEFAULT_DISPLAY, 0, cnx);
-        if (cnx->dso) {
-            EGLDisplay dpy = cnx->egl.eglGetDisplay(EGL_DEFAULT_DISPLAY);
-            LOGE_IF(dpy==EGL_NO_DISPLAY, "No EGLDisplay for software EGL!");
-            d->disp[IMPL_SOFTWARE].dpy = dpy; 
-            if (dpy == EGL_NO_DISPLAY) {
-                loader.close(cnx->dso);
-                cnx->dso = NULL;
-            }
-        }
     }
 
     cnx = &gEGLImpl[IMPL_HARDWARE];
@@ -714,15 +273,6 @@
             cnx->hooks[GLESv1_INDEX] = &gHooks[GLESv1_INDEX][IMPL_HARDWARE];
             cnx->hooks[GLESv2_INDEX] = &gHooks[GLESv2_INDEX][IMPL_HARDWARE];
             cnx->dso = loader.open(EGL_DEFAULT_DISPLAY, 1, cnx);
-            if (cnx->dso) {
-                EGLDisplay dpy = cnx->egl.eglGetDisplay(EGL_DEFAULT_DISPLAY);
-                LOGE_IF(dpy==EGL_NO_DISPLAY, "No EGLDisplay for hardware EGL!");
-                d->disp[IMPL_HARDWARE].dpy = dpy; 
-                if (dpy == EGL_NO_DISPLAY) {
-                    loader.close(cnx->dso);
-                    cnx->dso = NULL;
-                }
-            }
         } else {
             LOGD("3D hardware acceleration is disabled");
         }
@@ -735,12 +285,13 @@
     return EGL_TRUE;
 }
 
-EGLBoolean egl_init_drivers()
-{
+static pthread_mutex_t sInitDriverMutex = PTHREAD_MUTEX_INITIALIZER;
+
+EGLBoolean egl_init_drivers() {
     EGLBoolean res;
-    pthread_mutex_lock(&gInitDriverMutex);
+    pthread_mutex_lock(&sInitDriverMutex);
     res = egl_init_drivers_locked();
-    pthread_mutex_unlock(&gInitDriverMutex);
+    pthread_mutex_unlock(&sInitDriverMutex);
     return res;
 }
 
@@ -748,1486 +299,3 @@
 }; // namespace android
 // ----------------------------------------------------------------------------
 
-using namespace android;
-
-EGLDisplay eglGetDisplay(NativeDisplayType display)
-{
-    clearError();
-
-    uint32_t index = uint32_t(display);
-    if (index >= NUM_DISPLAYS) {
-        return setError(EGL_BAD_PARAMETER, EGL_NO_DISPLAY);
-    }
-
-    if (egl_init_drivers() == EGL_FALSE) {
-        return setError(EGL_BAD_PARAMETER, EGL_NO_DISPLAY);
-    }
-    
-    EGLDisplay dpy = EGLDisplay(uintptr_t(display) + 1LU);
-    return dpy;
-}
-
-// ----------------------------------------------------------------------------
-// Initialization
-// ----------------------------------------------------------------------------
-
-EGLBoolean eglInitialize(EGLDisplay dpy, EGLint *major, EGLint *minor)
-{
-    clearError();
-
-    egl_display_t * const dp = get_display(dpy);
-    if (!dp) return setError(EGL_BAD_DISPLAY, EGL_FALSE);
-
-    Mutex::Autolock _l(dp->lock);
-
-    if (dp->refs > 0) {
-        if (major != NULL) *major = VERSION_MAJOR;
-        if (minor != NULL) *minor = VERSION_MINOR;
-        dp->refs++;
-        return EGL_TRUE;
-    }
-
-#if EGL_TRACE
-
-    // Called both at early_init time and at this time. (Early_init is pre-zygote, so
-    // the information from that call may be stale.)
-    initEglTraceLevel();
-
-#endif
-
-    setGLHooksThreadSpecific(&gHooksNoContext);
-
-    // initialize each EGL and
-    // build our own extension string first, based on the extension we know
-    // and the extension supported by our client implementation
-    for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
-        egl_connection_t* const cnx = &gEGLImpl[i];
-        cnx->major = -1;
-        cnx->minor = -1;
-        if (!cnx->dso) 
-            continue;
-
-#if defined(ADRENO130)
-#warning "Adreno-130 eglInitialize() workaround"
-        /*
-         * The ADRENO 130 driver returns a different EGLDisplay each time
-         * eglGetDisplay() is called, but also makes the EGLDisplay invalid
-         * after eglTerminate() has been called, so that eglInitialize() 
-         * cannot be called again. Therefore, we need to make sure to call
-         * eglGetDisplay() before calling eglInitialize();
-         */
-        if (i == IMPL_HARDWARE) {
-            dp->disp[i].dpy =
-                cnx->egl.eglGetDisplay(EGL_DEFAULT_DISPLAY);
-        }
-#endif
-
-
-        EGLDisplay idpy = dp->disp[i].dpy;
-        if (cnx->egl.eglInitialize(idpy, &cnx->major, &cnx->minor)) {
-            //LOGD("initialized %d dpy=%p, ver=%d.%d, cnx=%p",
-            //        i, idpy, cnx->major, cnx->minor, cnx);
-
-            // display is now initialized
-            dp->disp[i].state = egl_display_t::INITIALIZED;
-
-            // get the query-strings for this display for each implementation
-            dp->disp[i].queryString.vendor =
-                cnx->egl.eglQueryString(idpy, EGL_VENDOR);
-            dp->disp[i].queryString.version =
-                cnx->egl.eglQueryString(idpy, EGL_VERSION);
-            dp->disp[i].queryString.extensions =
-                    cnx->egl.eglQueryString(idpy, EGL_EXTENSIONS);
-            dp->disp[i].queryString.clientApi =
-                cnx->egl.eglQueryString(idpy, EGL_CLIENT_APIS);
-
-        } else {
-            LOGW("%d: eglInitialize(%p) failed (%s)", i, idpy,
-                    egl_strerror(cnx->egl.eglGetError()));
-        }
-    }
-
-    EGLBoolean res = EGL_FALSE;
-    for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
-        egl_connection_t* const cnx = &gEGLImpl[i];
-        if (cnx->dso && cnx->major>=0 && cnx->minor>=0) {
-            EGLint n;
-            if (cnx->egl.eglGetConfigs(dp->disp[i].dpy, 0, 0, &n)) {
-                dp->disp[i].config = (EGLConfig*)malloc(sizeof(EGLConfig)*n);
-                if (dp->disp[i].config) {
-                    if (cnx->egl.eglGetConfigs(
-                            dp->disp[i].dpy, dp->disp[i].config, n,
-                            &dp->disp[i].numConfigs))
-                    {
-                        dp->numTotalConfigs += n;
-                        res = EGL_TRUE;
-                    }
-                }
-            }
-        }
-    }
-
-    if (res == EGL_TRUE) {
-        dp->configs = new egl_config_t[ dp->numTotalConfigs ];
-        for (int i=0, k=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
-            egl_connection_t* const cnx = &gEGLImpl[i];
-            if (cnx->dso && cnx->major>=0 && cnx->minor>=0) {
-                for (int j=0 ; j<dp->disp[i].numConfigs ; j++) {
-                    dp->configs[k].impl = i;
-                    dp->configs[k].config = dp->disp[i].config[j];
-                    dp->configs[k].configId = k + 1; // CONFIG_ID start at 1
-                    // store the implementation's CONFIG_ID
-                    cnx->egl.eglGetConfigAttrib(
-                            dp->disp[i].dpy,
-                            dp->disp[i].config[j],
-                            EGL_CONFIG_ID,
-                            &dp->configs[k].implConfigId);
-                    k++;
-                }
-            }
-        }
-
-        // sort our configurations so we can do binary-searches
-        qsort(  dp->configs,
-                dp->numTotalConfigs,
-                sizeof(egl_config_t), cmp_configs);
-
-        dp->refs++;
-        if (major != NULL) *major = VERSION_MAJOR;
-        if (minor != NULL) *minor = VERSION_MINOR;
-        return EGL_TRUE;
-    }
-    return setError(EGL_NOT_INITIALIZED, EGL_FALSE);
-}
-
-EGLBoolean eglTerminate(EGLDisplay dpy)
-{
-    // NOTE: don't unload the drivers b/c some APIs can be called
-    // after eglTerminate() has been called. eglTerminate() only
-    // terminates an EGLDisplay, not a EGL itself.
-
-    clearError();
-
-    egl_display_t* const dp = get_display(dpy);
-    if (!dp) return setError(EGL_BAD_DISPLAY, EGL_FALSE);
-
-    Mutex::Autolock _l(dp->lock);
-
-    if (dp->refs == 0) {
-        return setError(EGL_NOT_INITIALIZED, EGL_FALSE);
-    }
-
-    // this is specific to Android, display termination is ref-counted.
-    if (dp->refs > 1) {
-        dp->refs--;
-        return EGL_TRUE;
-    }
-
-    EGLBoolean res = EGL_FALSE;
-    for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
-        egl_connection_t* const cnx = &gEGLImpl[i];
-        if (cnx->dso && dp->disp[i].state == egl_display_t::INITIALIZED) {
-            if (cnx->egl.eglTerminate(dp->disp[i].dpy) == EGL_FALSE) {
-                LOGW("%d: eglTerminate(%p) failed (%s)", i, dp->disp[i].dpy,
-                        egl_strerror(cnx->egl.eglGetError()));
-            }
-            // REVISIT: it's unclear what to do if eglTerminate() fails
-            free(dp->disp[i].config);
-
-            dp->disp[i].numConfigs = 0;
-            dp->disp[i].config = 0;
-            dp->disp[i].state = egl_display_t::TERMINATED;
-
-            res = EGL_TRUE;
-        }
-    }
-    
-    // TODO: all egl_object_t should be marked for termination
-    
-    dp->refs--;
-    dp->numTotalConfigs = 0;
-    delete [] dp->configs;
-
-    return res;
-}
-
-// ----------------------------------------------------------------------------
-// configuration
-// ----------------------------------------------------------------------------
-
-EGLBoolean eglGetConfigs(   EGLDisplay dpy,
-                            EGLConfig *configs,
-                            EGLint config_size, EGLint *num_config)
-{
-    clearError();
-
-    egl_display_t const * const dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    GLint numConfigs = dp->numTotalConfigs;
-    if (!configs) {
-        *num_config = numConfigs;
-        return EGL_TRUE;
-    }
-
-    GLint n = 0;
-    for (intptr_t i=0 ; i<dp->numTotalConfigs && config_size ; i++) {
-        *configs++ = EGLConfig(i);
-        config_size--;
-        n++;
-    }
-    
-    *num_config = n;
-    return EGL_TRUE;
-}
-
-EGLBoolean eglChooseConfig( EGLDisplay dpy, const EGLint *attrib_list,
-                            EGLConfig *configs, EGLint config_size,
-                            EGLint *num_config)
-{
-    clearError();
-
-    egl_display_t const * const dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    if (num_config==0) {
-        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
-    }
-
-    EGLint n;
-    EGLBoolean res = EGL_FALSE;
-    *num_config = 0;
-
-    
-    // It is unfortunate, but we need to remap the EGL_CONFIG_IDs, 
-    // to do this, we have to go through the attrib_list array once
-    // to figure out both its size and if it contains an EGL_CONFIG_ID
-    // key. If so, the full array is copied and patched.
-    // NOTE: we assume that there can be only one occurrence
-    // of EGL_CONFIG_ID.
-    
-    EGLint patch_index = -1;
-    GLint attr;
-    size_t size = 0;
-    if (attrib_list) {
-        while ((attr=attrib_list[size]) != EGL_NONE) {
-            if (attr == EGL_CONFIG_ID)
-                patch_index = size;
-            size += 2;
-        }
-    }
-    if (patch_index >= 0) {
-        size += 2; // we need copy the sentinel as well
-        EGLint* new_list = (EGLint*)malloc(size*sizeof(EGLint));
-        if (new_list == 0)
-            return setError(EGL_BAD_ALLOC, EGL_FALSE);
-        memcpy(new_list, attrib_list, size*sizeof(EGLint));
-
-        // patch the requested EGL_CONFIG_ID
-        bool found = false;
-        EGLConfig ourConfig(0);
-        EGLint& configId(new_list[patch_index+1]);
-        for (intptr_t i=0 ; i<dp->numTotalConfigs ; i++) {
-            if (dp->configs[i].configId == configId) {
-                ourConfig = EGLConfig(i);
-                configId = dp->configs[i].implConfigId;
-                found = true;
-                break;
-            }
-        }
-
-        egl_connection_t* const cnx = &gEGLImpl[dp->configs[intptr_t(ourConfig)].impl];
-        if (found && cnx->dso) {
-            // and switch to the new list
-            attrib_list = const_cast<const EGLint *>(new_list);
-
-            // At this point, the only configuration that can match is
-            // dp->configs[i][index], however, we don't know if it would be
-            // rejected because of the other attributes, so we do have to call
-            // cnx->egl.eglChooseConfig() -- but we don't have to loop
-            // through all the EGLimpl[].
-            // We also know we can only get a single config back, and we know
-            // which one.
-
-            res = cnx->egl.eglChooseConfig(
-                    dp->disp[ dp->configs[intptr_t(ourConfig)].impl ].dpy,
-                    attrib_list, configs, config_size, &n);
-            if (res && n>0) {
-                // n has to be 0 or 1, by construction, and we already know
-                // which config it will return (since there can be only one).
-                if (configs) {
-                    configs[0] = ourConfig;
-                }
-                *num_config = 1;
-            }
-        }
-
-        free(const_cast<EGLint *>(attrib_list));
-        return res;
-    }
-
-
-    for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
-        egl_connection_t* const cnx = &gEGLImpl[i];
-        if (cnx->dso) {
-            if (cnx->egl.eglChooseConfig(
-                    dp->disp[i].dpy, attrib_list, configs, config_size, &n)) {
-                if (configs) {
-                    // now we need to convert these client EGLConfig to our
-                    // internal EGLConfig format.
-                    // This is done in O(n Log(n)) time.
-                    for (int j=0 ; j<n ; j++) {
-                        egl_config_t key(i, configs[j]);
-                        intptr_t index = binarySearch<egl_config_t>(
-                                dp->configs, 0, dp->numTotalConfigs, key);
-                        if (index >= 0) {
-                            configs[j] = EGLConfig(index);
-                        } else {
-                            return setError(EGL_BAD_CONFIG, EGL_FALSE);
-                        }
-                    }
-                    configs += n;
-                    config_size -= n;
-                }
-                *num_config += n;
-                res = EGL_TRUE;
-            }
-        }
-    }
-    return res;
-}
-
-EGLBoolean eglGetConfigAttrib(EGLDisplay dpy, EGLConfig config,
-        EGLint attribute, EGLint *value)
-{
-    clearError();
-
-    egl_display_t const* dp = 0;
-    egl_connection_t* cnx = validate_display_config(dpy, config, dp);
-    if (!cnx) return EGL_FALSE;
-    
-    if (attribute == EGL_CONFIG_ID) {
-        *value = dp->configs[intptr_t(config)].configId;
-        return EGL_TRUE;
-    }
-    return cnx->egl.eglGetConfigAttrib(
-            dp->disp[ dp->configs[intptr_t(config)].impl ].dpy,
-            dp->configs[intptr_t(config)].config, attribute, value);
-}
-
-// ----------------------------------------------------------------------------
-// surfaces
-// ----------------------------------------------------------------------------
-
-EGLSurface eglCreateWindowSurface(  EGLDisplay dpy, EGLConfig config,
-                                    NativeWindowType window,
-                                    const EGLint *attrib_list)
-{
-    clearError();
-
-    egl_display_t const* dp = 0;
-    egl_connection_t* cnx = validate_display_config(dpy, config, dp);
-    if (cnx) {
-        EGLDisplay iDpy = dp->disp[ dp->configs[intptr_t(config)].impl ].dpy;
-        EGLConfig iConfig = dp->configs[intptr_t(config)].config;
-        EGLint format;
-
-        // set the native window's buffers format to match this config
-        if (cnx->egl.eglGetConfigAttrib(iDpy,
-                iConfig, EGL_NATIVE_VISUAL_ID, &format)) {
-            if (format != 0) {
-                native_window_set_buffers_geometry(window, 0, 0, format);
-            }
-        }
-
-        EGLSurface surface = cnx->egl.eglCreateWindowSurface(
-                iDpy, iConfig, window, attrib_list);
-        if (surface != EGL_NO_SURFACE) {
-            egl_surface_t* s = new egl_surface_t(dpy, config, window, surface,
-                    dp->configs[intptr_t(config)].impl, cnx);
-            return s;
-        }
-    }
-    return EGL_NO_SURFACE;
-}
-
-EGLSurface eglCreatePixmapSurface(  EGLDisplay dpy, EGLConfig config,
-                                    NativePixmapType pixmap,
-                                    const EGLint *attrib_list)
-{
-    clearError();
-
-    egl_display_t const* dp = 0;
-    egl_connection_t* cnx = validate_display_config(dpy, config, dp);
-    if (cnx) {
-        EGLSurface surface = cnx->egl.eglCreatePixmapSurface(
-                dp->disp[ dp->configs[intptr_t(config)].impl ].dpy,
-                dp->configs[intptr_t(config)].config, pixmap, attrib_list);
-        if (surface != EGL_NO_SURFACE) {
-            egl_surface_t* s = new egl_surface_t(dpy, config, NULL, surface,
-                    dp->configs[intptr_t(config)].impl, cnx);
-            return s;
-        }
-    }
-    return EGL_NO_SURFACE;
-}
-
-EGLSurface eglCreatePbufferSurface( EGLDisplay dpy, EGLConfig config,
-                                    const EGLint *attrib_list)
-{
-    clearError();
-
-    egl_display_t const* dp = 0;
-    egl_connection_t* cnx = validate_display_config(dpy, config, dp);
-    if (cnx) {
-        EGLSurface surface = cnx->egl.eglCreatePbufferSurface(
-                dp->disp[ dp->configs[intptr_t(config)].impl ].dpy,
-                dp->configs[intptr_t(config)].config, attrib_list);
-        if (surface != EGL_NO_SURFACE) {
-            egl_surface_t* s = new egl_surface_t(dpy, config, NULL, surface,
-                    dp->configs[intptr_t(config)].impl, cnx);
-            return s;
-        }
-    }
-    return EGL_NO_SURFACE;
-}
-                                    
-EGLBoolean eglDestroySurface(EGLDisplay dpy, EGLSurface surface)
-{
-    clearError();
-
-    egl_display_t const * const dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    SurfaceRef _s(surface);
-    if (!_s.get()) return setError(EGL_BAD_SURFACE, EGL_FALSE);
-
-    if (!validate_display_surface(dpy, surface))
-        return EGL_FALSE;    
-
-    egl_surface_t * const s = get_surface(surface);
-    EGLBoolean result = s->cnx->egl.eglDestroySurface(
-            dp->disp[s->impl].dpy, s->surface);
-    if (result == EGL_TRUE) {
-        if (s->win != NULL) {
-            native_window_set_buffers_geometry(s->win.get(), 0, 0, 0);
-        }
-        _s.terminate();
-    }
-    return result;
-}
-
-EGLBoolean eglQuerySurface( EGLDisplay dpy, EGLSurface surface,
-                            EGLint attribute, EGLint *value)
-{
-    clearError();
-
-    egl_display_t const * const dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    SurfaceRef _s(surface);
-    if (!_s.get()) return setError(EGL_BAD_SURFACE, EGL_FALSE);
-
-    if (!validate_display_surface(dpy, surface))
-        return EGL_FALSE;    
-    egl_surface_t const * const s = get_surface(surface);
-
-    EGLBoolean result(EGL_TRUE);
-    if (attribute == EGL_CONFIG_ID) {
-        // We need to remap EGL_CONFIG_IDs
-        *value = dp->configs[intptr_t(s->config)].configId;
-    } else {
-        result = s->cnx->egl.eglQuerySurface(
-                dp->disp[s->impl].dpy, s->surface, attribute, value);
-    }
-
-    return result;
-}
-
-// ----------------------------------------------------------------------------
-// Contexts
-// ----------------------------------------------------------------------------
-
-EGLContext eglCreateContext(EGLDisplay dpy, EGLConfig config,
-                            EGLContext share_list, const EGLint *attrib_list)
-{
-    clearError();
-
-    egl_display_t const* dp = 0;
-    egl_connection_t* cnx = validate_display_config(dpy, config, dp);
-    if (cnx) {
-        if (share_list != EGL_NO_CONTEXT) {
-            egl_context_t* const c = get_context(share_list);
-            share_list = c->context;
-        }
-        EGLContext context = cnx->egl.eglCreateContext(
-                dp->disp[ dp->configs[intptr_t(config)].impl ].dpy,
-                dp->configs[intptr_t(config)].config,
-                share_list, attrib_list);
-        if (context != EGL_NO_CONTEXT) {
-            // figure out if it's a GLESv1 or GLESv2
-            int version = 0;
-            if (attrib_list) {
-                while (*attrib_list != EGL_NONE) {
-                    GLint attr = *attrib_list++;
-                    GLint value = *attrib_list++;
-                    if (attr == EGL_CONTEXT_CLIENT_VERSION) {
-                        if (value == 1) {
-                            version = GLESv1_INDEX;
-                        } else if (value == 2) {
-                            version = GLESv2_INDEX;
-                        }
-                    }
-                };
-            }
-            egl_context_t* c = new egl_context_t(dpy, context, config,
-                    dp->configs[intptr_t(config)].impl, cnx, version);
-            return c;
-        }
-    }
-    return EGL_NO_CONTEXT;
-}
-
-EGLBoolean eglDestroyContext(EGLDisplay dpy, EGLContext ctx)
-{
-    clearError();
-
-    egl_display_t const * const dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    ContextRef _c(ctx);
-    if (!_c.get()) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
-    
-    if (!validate_display_context(dpy, ctx))
-        return EGL_FALSE;
-    egl_context_t * const c = get_context(ctx);
-    EGLBoolean result = c->cnx->egl.eglDestroyContext(
-            dp->disp[c->impl].dpy, c->context);
-    if (result == EGL_TRUE) {
-        _c.terminate();
-    }
-    return result;
-}
-
-static void loseCurrent(egl_context_t * cur_c)
-{
-    if (cur_c) {
-        egl_surface_t * cur_r = get_surface(cur_c->read);
-        egl_surface_t * cur_d = get_surface(cur_c->draw);
-
-        // by construction, these are either 0 or valid (possibly terminated)
-        // it should be impossible for these to be invalid
-        ContextRef _cur_c(cur_c);
-        SurfaceRef _cur_r(cur_r);
-        SurfaceRef _cur_d(cur_d);
-
-        cur_c->read = NULL;
-        cur_c->draw = NULL;
-
-        _cur_c.release();
-        _cur_r.release();
-        _cur_d.release();
-    }
-}
-
-EGLBoolean eglMakeCurrent(  EGLDisplay dpy, EGLSurface draw,
-                            EGLSurface read, EGLContext ctx)
-{
-    clearError();
-
-    egl_display_t const * const dp = get_display(dpy);
-    if (!dp) return setError(EGL_BAD_DISPLAY, EGL_FALSE);
-
-    /* If ctx is not EGL_NO_CONTEXT, read is not EGL_NO_SURFACE, or draw is not
-       EGL_NO_SURFACE, then an EGL_NOT_INITIALIZED error is generated if dpy is
-       a valid but uninitialized display. */
-    if ( (ctx != EGL_NO_CONTEXT) || (read != EGL_NO_SURFACE) ||
-         (draw != EGL_NO_SURFACE) ) {
-        if (!dp->isReady()) return setError(EGL_NOT_INITIALIZED, EGL_FALSE);
-    }
-
-    // get a reference to the object passed in
-    ContextRef _c(ctx);
-    SurfaceRef _d(draw);
-    SurfaceRef _r(read);
-
-    // validate the context (if not EGL_NO_CONTEXT)
-    if ((ctx != EGL_NO_CONTEXT) && (!validate_display_context(dpy, ctx))) {
-        // EGL_NO_CONTEXT is valid
-        return EGL_FALSE;
-    }
-
-    // these are the underlying implementation's object
-    EGLContext impl_ctx  = EGL_NO_CONTEXT;
-    EGLSurface impl_draw = EGL_NO_SURFACE;
-    EGLSurface impl_read = EGL_NO_SURFACE;
-
-    // these are our objects structs passed in
-    egl_context_t       * c = NULL;
-    egl_surface_t const * d = NULL;
-    egl_surface_t const * r = NULL;
-
-    // these are the current objects structs
-    egl_context_t * cur_c = get_context(getContext());
-    
-    if (ctx != EGL_NO_CONTEXT) {
-        c = get_context(ctx);
-        impl_ctx = c->context;
-    } else {
-        // no context given, use the implementation of the current context
-        if (cur_c == NULL) {
-            // no current context
-            if (draw != EGL_NO_SURFACE || read != EGL_NO_SURFACE) {
-                // calling eglMakeCurrent( ..., !=0, !=0, EGL_NO_CONTEXT);
-                return setError(EGL_BAD_MATCH, EGL_FALSE);
-            }
-            // not an error, there is just no current context.
-            return EGL_TRUE;
-        }
-    }
-
-    // retrieve the underlying implementation's draw EGLSurface
-    if (draw != EGL_NO_SURFACE) {
-        d = get_surface(draw);
-        // make sure the EGLContext and EGLSurface passed in are for
-        // the same driver
-        if (c && d->impl != c->impl)
-            return setError(EGL_BAD_MATCH, EGL_FALSE);
-        impl_draw = d->surface;
-    }
-
-    // retrieve the underlying implementation's read EGLSurface
-    if (read != EGL_NO_SURFACE) {
-        r = get_surface(read);
-        // make sure the EGLContext and EGLSurface passed in are for
-        // the same driver
-        if (c && r->impl != c->impl)
-            return setError(EGL_BAD_MATCH, EGL_FALSE);
-        impl_read = r->surface;
-    }
-
-    EGLBoolean result;
-
-    if (c) {
-        result = c->cnx->egl.eglMakeCurrent(
-                dp->disp[c->impl].dpy, impl_draw, impl_read, impl_ctx);
-    } else {
-        result = cur_c->cnx->egl.eglMakeCurrent(
-                dp->disp[cur_c->impl].dpy, impl_draw, impl_read, impl_ctx);
-    }
-
-    if (result == EGL_TRUE) {
-
-        loseCurrent(cur_c);
-
-        if (ctx != EGL_NO_CONTEXT) {
-            setGLHooksThreadSpecific(c->cnx->hooks[c->version]);
-            setContext(ctx);
-            tls_t * const tls = getTLS();
-            if (!tls->dbg && gEGLDebugLevel > 0)
-                tls->dbg = CreateDbgContext(gEGLThreadLocalStorageKey, c->version,
-                                            c->cnx->hooks[c->version]);
-            _c.acquire();
-            _r.acquire();
-            _d.acquire();
-            c->read = read;
-            c->draw = draw;
-        } else {
-            setGLHooksThreadSpecific(&gHooksNoContext);
-            setContext(EGL_NO_CONTEXT);
-        }
-    }
-    return result;
-}
-
-
-EGLBoolean eglQueryContext( EGLDisplay dpy, EGLContext ctx,
-                            EGLint attribute, EGLint *value)
-{
-    clearError();
-
-    egl_display_t const * const dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    ContextRef _c(ctx);
-    if (!_c.get()) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
-
-    if (!validate_display_context(dpy, ctx))
-        return EGL_FALSE;    
-    
-    egl_context_t * const c = get_context(ctx);
-
-    EGLBoolean result(EGL_TRUE);
-    if (attribute == EGL_CONFIG_ID) {
-        *value = dp->configs[intptr_t(c->config)].configId;
-    } else {
-        // We need to remap EGL_CONFIG_IDs
-        result = c->cnx->egl.eglQueryContext(
-                dp->disp[c->impl].dpy, c->context, attribute, value);
-    }
-
-    return result;
-}
-
-EGLContext eglGetCurrentContext(void)
-{
-    // could be called before eglInitialize(), but we wouldn't have a context
-    // then, and this function would correctly return EGL_NO_CONTEXT.
-
-    clearError();
-
-    EGLContext ctx = getContext();
-    return ctx;
-}
-
-EGLSurface eglGetCurrentSurface(EGLint readdraw)
-{
-    // could be called before eglInitialize(), but we wouldn't have a context
-    // then, and this function would correctly return EGL_NO_SURFACE.
-
-    clearError();
-
-    EGLContext ctx = getContext();
-    if (ctx) {
-        egl_context_t const * const c = get_context(ctx);
-        if (!c) return setError(EGL_BAD_CONTEXT, EGL_NO_SURFACE);
-        switch (readdraw) {
-            case EGL_READ: return c->read;
-            case EGL_DRAW: return c->draw;            
-            default: return setError(EGL_BAD_PARAMETER, EGL_NO_SURFACE);
-        }
-    }
-    return EGL_NO_SURFACE;
-}
-
-EGLDisplay eglGetCurrentDisplay(void)
-{
-    // could be called before eglInitialize(), but we wouldn't have a context
-    // then, and this function would correctly return EGL_NO_DISPLAY.
-
-    clearError();
-
-    EGLContext ctx = getContext();
-    if (ctx) {
-        egl_context_t const * const c = get_context(ctx);
-        if (!c) return setError(EGL_BAD_CONTEXT, EGL_NO_SURFACE);
-        return c->dpy;
-    }
-    return EGL_NO_DISPLAY;
-}
-
-EGLBoolean eglWaitGL(void)
-{
-    // could be called before eglInitialize(), but we wouldn't have a context
-    // then, and this function would return GL_TRUE, which isn't wrong.
-
-    clearError();
-
-    EGLBoolean res = EGL_TRUE;
-    EGLContext ctx = getContext();
-    if (ctx) {
-        egl_context_t const * const c = get_context(ctx);
-        if (!c) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
-        if (uint32_t(c->impl)>=2)
-            return setError(EGL_BAD_CONTEXT, EGL_FALSE);
-        egl_connection_t* const cnx = &gEGLImpl[c->impl];
-        if (!cnx->dso) 
-            return setError(EGL_BAD_CONTEXT, EGL_FALSE);
-        res = cnx->egl.eglWaitGL();
-    }
-    return res;
-}
-
-EGLBoolean eglWaitNative(EGLint engine)
-{
-    // could be called before eglInitialize(), but we wouldn't have a context
-    // then, and this function would return GL_TRUE, which isn't wrong.
-
-    clearError();
-
-    EGLBoolean res = EGL_TRUE;
-    EGLContext ctx = getContext();
-    if (ctx) {
-        egl_context_t const * const c = get_context(ctx);
-        if (!c) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
-        if (uint32_t(c->impl)>=2)
-            return setError(EGL_BAD_CONTEXT, EGL_FALSE);
-        egl_connection_t* const cnx = &gEGLImpl[c->impl];
-        if (!cnx->dso) 
-            return setError(EGL_BAD_CONTEXT, EGL_FALSE);
-        res = cnx->egl.eglWaitNative(engine);
-    }
-    return res;
-}
-
-EGLint eglGetError(void)
-{
-    EGLint result = EGL_SUCCESS;
-    EGLint err;
-    for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
-        err = EGL_SUCCESS;
-        egl_connection_t* const cnx = &gEGLImpl[i];
-        if (cnx->dso)
-            err = cnx->egl.eglGetError();
-        if (err!=EGL_SUCCESS && result==EGL_SUCCESS)
-            result = err;
-    }
-    err = getError();
-    if (result == EGL_SUCCESS)
-        result = err;
-    return result;
-}
-
-// Note: Similar implementations of these functions also exist in
-// gl2.cpp and gl.cpp, and are used by applications that call the
-// exported entry points directly.
-typedef void (GL_APIENTRYP PFNGLEGLIMAGETARGETTEXTURE2DOESPROC) (GLenum target, GLeglImageOES image);
-typedef void (GL_APIENTRYP PFNGLEGLIMAGETARGETRENDERBUFFERSTORAGEOESPROC) (GLenum target, GLeglImageOES image);
-
-static PFNGLEGLIMAGETARGETTEXTURE2DOESPROC glEGLImageTargetTexture2DOES_impl = NULL;
-static PFNGLEGLIMAGETARGETRENDERBUFFERSTORAGEOESPROC glEGLImageTargetRenderbufferStorageOES_impl = NULL;
-
-static void glEGLImageTargetTexture2DOES_wrapper(GLenum target, GLeglImageOES image)
-{
-    GLeglImageOES implImage =
-        (GLeglImageOES)egl_get_image_for_current_context((EGLImageKHR)image);
-    glEGLImageTargetTexture2DOES_impl(target, implImage);
-}
-
-static void glEGLImageTargetRenderbufferStorageOES_wrapper(GLenum target, GLeglImageOES image)
-{
-    GLeglImageOES implImage =
-        (GLeglImageOES)egl_get_image_for_current_context((EGLImageKHR)image);
-    glEGLImageTargetRenderbufferStorageOES_impl(target, implImage);
-}
-
-__eglMustCastToProperFunctionPointerType eglGetProcAddress(const char *procname)
-{
-    // eglGetProcAddress() could be the very first function called
-    // in which case we must make sure we've initialized ourselves, this
-    // happens the first time egl_get_display() is called.
-
-    clearError();
-
-    if (egl_init_drivers() == EGL_FALSE) {
-        setError(EGL_BAD_PARAMETER, NULL);
-        return  NULL;
-    }
-
-    __eglMustCastToProperFunctionPointerType addr;
-    addr = findProcAddress(procname, gExtentionMap, NELEM(gExtentionMap));
-    if (addr) return addr;
-
-    // this protects accesses to gGLExtentionMap and gGLExtentionSlot
-    pthread_mutex_lock(&gInitDriverMutex);
-
-        /*
-         * Since eglGetProcAddress() is not associated to anything, it needs
-         * to return a function pointer that "works" regardless of what
-         * the current context is.
-         *
-         * For this reason, we return a "forwarder", a small stub that takes
-         * care of calling the function associated with the context
-         * currently bound.
-         *
-         * We first look for extensions we've already resolved, if we're seeing
-         * this extension for the first time, we go through all our
-         * implementations and call eglGetProcAddress() and record the
-         * result in the appropriate implementation hooks and return the
-         * address of the forwarder corresponding to that hook set.
-         *
-         */
-
-        const String8 name(procname);
-        addr = gGLExtentionMap.valueFor(name);
-        const int slot = gGLExtentionSlot;
-
-        LOGE_IF(slot >= MAX_NUMBER_OF_GL_EXTENSIONS,
-                "no more slots for eglGetProcAddress(\"%s\")",
-                procname);
-
-        if (!addr && (slot < MAX_NUMBER_OF_GL_EXTENSIONS)) {
-            bool found = false;
-            for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
-                egl_connection_t* const cnx = &gEGLImpl[i];
-                if (cnx->dso && cnx->egl.eglGetProcAddress) {
-                    found = true;
-                    // Extensions are independent of the bound context
-                    cnx->hooks[GLESv1_INDEX]->ext.extensions[slot] =
-                    cnx->hooks[GLESv2_INDEX]->ext.extensions[slot] =
-#if EGL_TRACE
-                    gHooksDebug.ext.extensions[slot] = gHooksTrace.ext.extensions[slot] =
-#endif
-                            cnx->egl.eglGetProcAddress(procname);
-                }
-            }
-            if (found) {
-                addr = gExtensionForwarders[slot];
-
-                if (!strcmp(procname, "glEGLImageTargetTexture2DOES")) {
-                    glEGLImageTargetTexture2DOES_impl = (PFNGLEGLIMAGETARGETTEXTURE2DOESPROC)addr;
-                    addr = (__eglMustCastToProperFunctionPointerType)glEGLImageTargetTexture2DOES_wrapper;
-                }
-                if (!strcmp(procname, "glEGLImageTargetRenderbufferStorageOES")) {
-                    glEGLImageTargetRenderbufferStorageOES_impl = (PFNGLEGLIMAGETARGETRENDERBUFFERSTORAGEOESPROC)addr;
-                    addr = (__eglMustCastToProperFunctionPointerType)glEGLImageTargetRenderbufferStorageOES_wrapper;
-                }
-
-                gGLExtentionMap.add(name, addr);
-                gGLExtentionSlot++;
-            }
-        }
-
-    pthread_mutex_unlock(&gInitDriverMutex);
-    return addr;
-}
-
-EGLBoolean eglSwapBuffers(EGLDisplay dpy, EGLSurface draw)
-{
-    EGLBoolean Debug_eglSwapBuffers(EGLDisplay dpy, EGLSurface draw);
-    if (gEGLDebugLevel > 0)
-        Debug_eglSwapBuffers(dpy, draw);
-
-    clearError();
-
-    egl_display_t const * const dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    SurfaceRef _s(draw);
-    if (!_s.get()) return setError(EGL_BAD_SURFACE, EGL_FALSE);
-
-    if (!validate_display_surface(dpy, draw))
-        return EGL_FALSE;    
-    egl_surface_t const * const s = get_surface(draw);
-    return s->cnx->egl.eglSwapBuffers(dp->disp[s->impl].dpy, s->surface);
-}
-
-EGLBoolean eglCopyBuffers(  EGLDisplay dpy, EGLSurface surface,
-                            NativePixmapType target)
-{
-    clearError();
-
-    egl_display_t const * const dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    SurfaceRef _s(surface);
-    if (!_s.get()) return setError(EGL_BAD_SURFACE, EGL_FALSE);
-
-    if (!validate_display_surface(dpy, surface))
-        return EGL_FALSE;    
-    egl_surface_t const * const s = get_surface(surface);
-    return s->cnx->egl.eglCopyBuffers(
-            dp->disp[s->impl].dpy, s->surface, target);
-}
-
-const char* eglQueryString(EGLDisplay dpy, EGLint name)
-{
-    clearError();
-
-    egl_display_t const * const dp = validate_display(dpy);
-    if (!dp) return (const char *) NULL;
-
-    switch (name) {
-        case EGL_VENDOR:
-            return gVendorString;
-        case EGL_VERSION:
-            return gVersionString;
-        case EGL_EXTENSIONS:
-            return gExtensionString;
-        case EGL_CLIENT_APIS:
-            return gClientApiString;
-    }
-    return setError(EGL_BAD_PARAMETER, (const char *)0);
-}
-
-
-// ----------------------------------------------------------------------------
-// EGL 1.1
-// ----------------------------------------------------------------------------
-
-EGLBoolean eglSurfaceAttrib(
-        EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint value)
-{
-    clearError();
-
-    egl_display_t const * const dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    SurfaceRef _s(surface);
-    if (!_s.get()) return setError(EGL_BAD_SURFACE, EGL_FALSE);
-
-    if (!validate_display_surface(dpy, surface))
-        return EGL_FALSE;    
-    egl_surface_t const * const s = get_surface(surface);
-    if (s->cnx->egl.eglSurfaceAttrib) {
-        return s->cnx->egl.eglSurfaceAttrib(
-                dp->disp[s->impl].dpy, s->surface, attribute, value);
-    }
-    return setError(EGL_BAD_SURFACE, EGL_FALSE);
-}
-
-EGLBoolean eglBindTexImage(
-        EGLDisplay dpy, EGLSurface surface, EGLint buffer)
-{
-    clearError();
-
-    egl_display_t const * const dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    SurfaceRef _s(surface);
-    if (!_s.get()) return setError(EGL_BAD_SURFACE, EGL_FALSE);
-
-    if (!validate_display_surface(dpy, surface))
-        return EGL_FALSE;    
-    egl_surface_t const * const s = get_surface(surface);
-    if (s->cnx->egl.eglBindTexImage) {
-        return s->cnx->egl.eglBindTexImage(
-                dp->disp[s->impl].dpy, s->surface, buffer);
-    }
-    return setError(EGL_BAD_SURFACE, EGL_FALSE);
-}
-
-EGLBoolean eglReleaseTexImage(
-        EGLDisplay dpy, EGLSurface surface, EGLint buffer)
-{
-    clearError();
-
-    egl_display_t const * const dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    SurfaceRef _s(surface);
-    if (!_s.get()) return setError(EGL_BAD_SURFACE, EGL_FALSE);
-
-    if (!validate_display_surface(dpy, surface))
-        return EGL_FALSE;    
-    egl_surface_t const * const s = get_surface(surface);
-    if (s->cnx->egl.eglReleaseTexImage) {
-        return s->cnx->egl.eglReleaseTexImage(
-                dp->disp[s->impl].dpy, s->surface, buffer);
-    }
-    return setError(EGL_BAD_SURFACE, EGL_FALSE);
-}
-
-EGLBoolean eglSwapInterval(EGLDisplay dpy, EGLint interval)
-{
-    clearError();
-
-    egl_display_t const * const dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    EGLBoolean res = EGL_TRUE;
-    for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
-        egl_connection_t* const cnx = &gEGLImpl[i];
-        if (cnx->dso) {
-            if (cnx->egl.eglSwapInterval) {
-                if (cnx->egl.eglSwapInterval(
-                        dp->disp[i].dpy, interval) == EGL_FALSE) {
-                    res = EGL_FALSE;
-                }
-            }
-        }
-    }
-    return res;
-}
-
-
-// ----------------------------------------------------------------------------
-// EGL 1.2
-// ----------------------------------------------------------------------------
-
-EGLBoolean eglWaitClient(void)
-{
-    clearError();
-
-    // could be called before eglInitialize(), but we wouldn't have a context
-    // then, and this function would return GL_TRUE, which isn't wrong.
-    EGLBoolean res = EGL_TRUE;
-    EGLContext ctx = getContext();
-    if (ctx) {
-        egl_context_t const * const c = get_context(ctx);
-        if (!c) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
-        if (uint32_t(c->impl)>=2)
-            return setError(EGL_BAD_CONTEXT, EGL_FALSE);
-        egl_connection_t* const cnx = &gEGLImpl[c->impl];
-        if (!cnx->dso) 
-            return setError(EGL_BAD_CONTEXT, EGL_FALSE);
-        if (cnx->egl.eglWaitClient) {
-            res = cnx->egl.eglWaitClient();
-        } else {
-            res = cnx->egl.eglWaitGL();
-        }
-    }
-    return res;
-}
-
-EGLBoolean eglBindAPI(EGLenum api)
-{
-    clearError();
-
-    if (egl_init_drivers() == EGL_FALSE) {
-        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
-    }
-
-    // bind this API on all EGLs
-    EGLBoolean res = EGL_TRUE;
-    for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
-        egl_connection_t* const cnx = &gEGLImpl[i];
-        if (cnx->dso) {
-            if (cnx->egl.eglBindAPI) {
-                if (cnx->egl.eglBindAPI(api) == EGL_FALSE) {
-                    res = EGL_FALSE;
-                }
-            }
-        }
-    }
-    return res;
-}
-
-EGLenum eglQueryAPI(void)
-{
-    clearError();
-
-    if (egl_init_drivers() == EGL_FALSE) {
-        return setError(EGL_BAD_PARAMETER, EGL_FALSE);
-    }
-
-    for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
-        egl_connection_t* const cnx = &gEGLImpl[i];
-        if (cnx->dso) {
-            if (cnx->egl.eglQueryAPI) {
-                // the first one we find is okay, because they all
-                // should be the same
-                return cnx->egl.eglQueryAPI();
-            }
-        }
-    }
-    // or, it can only be OpenGL ES
-    return EGL_OPENGL_ES_API;
-}
-
-EGLBoolean eglReleaseThread(void)
-{
-    clearError();
-
-    // If there is context bound to the thread, release it
-    loseCurrent(get_context(getContext()));
-
-    for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
-        egl_connection_t* const cnx = &gEGLImpl[i];
-        if (cnx->dso) {
-            if (cnx->egl.eglReleaseThread) {
-                cnx->egl.eglReleaseThread();
-            }
-        }
-    }
-    clearTLS();    
-    return EGL_TRUE;
-}
-
-EGLSurface eglCreatePbufferFromClientBuffer(
-          EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer,
-          EGLConfig config, const EGLint *attrib_list)
-{
-    clearError();
-
-    egl_display_t const* dp = 0;
-    egl_connection_t* cnx = validate_display_config(dpy, config, dp);
-    if (!cnx) return EGL_FALSE;
-    if (cnx->egl.eglCreatePbufferFromClientBuffer) {
-        return cnx->egl.eglCreatePbufferFromClientBuffer(
-                dp->disp[ dp->configs[intptr_t(config)].impl ].dpy,
-                buftype, buffer,
-                dp->configs[intptr_t(config)].config, attrib_list);
-    }
-    return setError(EGL_BAD_CONFIG, EGL_NO_SURFACE);
-}
-
-// ----------------------------------------------------------------------------
-// EGL_EGLEXT_VERSION 3
-// ----------------------------------------------------------------------------
-
-EGLBoolean eglLockSurfaceKHR(EGLDisplay dpy, EGLSurface surface,
-        const EGLint *attrib_list)
-{
-    clearError();
-
-    egl_display_t const * const dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    SurfaceRef _s(surface);
-    if (!_s.get()) return setError(EGL_BAD_SURFACE, EGL_FALSE);
-
-    if (!validate_display_surface(dpy, surface))
-        return EGL_FALSE;
-
-    egl_surface_t const * const s = get_surface(surface);
-
-    if (s->cnx->egl.eglLockSurfaceKHR) {
-        return s->cnx->egl.eglLockSurfaceKHR(
-                dp->disp[s->impl].dpy, s->surface, attrib_list);
-    }
-    return setError(EGL_BAD_DISPLAY, EGL_FALSE);
-}
-
-EGLBoolean eglUnlockSurfaceKHR(EGLDisplay dpy, EGLSurface surface)
-{
-    clearError();
-
-    egl_display_t const * const dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    SurfaceRef _s(surface);
-    if (!_s.get()) return setError(EGL_BAD_SURFACE, EGL_FALSE);
-
-    if (!validate_display_surface(dpy, surface))
-        return EGL_FALSE;
-
-    egl_surface_t const * const s = get_surface(surface);
-
-    if (s->cnx->egl.eglUnlockSurfaceKHR) {
-        return s->cnx->egl.eglUnlockSurfaceKHR(
-                dp->disp[s->impl].dpy, s->surface);
-    }
-    return setError(EGL_BAD_DISPLAY, EGL_FALSE);
-}
-
-EGLImageKHR eglCreateImageKHR(EGLDisplay dpy, EGLContext ctx, EGLenum target,
-        EGLClientBuffer buffer, const EGLint *attrib_list)
-{
-    clearError();
-
-    egl_display_t const * const dp = validate_display(dpy);
-    if (!dp) return EGL_NO_IMAGE_KHR;
-
-    if (ctx != EGL_NO_CONTEXT) {
-        ContextRef _c(ctx);
-        if (!_c.get()) return setError(EGL_BAD_CONTEXT, EGL_NO_IMAGE_KHR);
-        if (!validate_display_context(dpy, ctx))
-            return EGL_NO_IMAGE_KHR;
-        egl_context_t * const c = get_context(ctx);
-        // since we have an EGLContext, we know which implementation to use
-        EGLImageKHR image = c->cnx->egl.eglCreateImageKHR(
-                dp->disp[c->impl].dpy, c->context, target, buffer, attrib_list);
-        if (image == EGL_NO_IMAGE_KHR)
-            return image;
-            
-        egl_image_t* result = new egl_image_t(dpy, ctx);
-        result->images[c->impl] = image;
-        return (EGLImageKHR)result;
-    } else {
-        // EGL_NO_CONTEXT is a valid parameter
-
-        /* Since we don't have a way to know which implementation to call,
-         * we're calling all of them. If at least one of the implementation
-         * succeeded, this is a success.
-         */
-
-        EGLint currentError = eglGetError();
-
-        EGLImageKHR implImages[IMPL_NUM_IMPLEMENTATIONS];
-        bool success = false;
-        for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
-            egl_connection_t* const cnx = &gEGLImpl[i];
-            implImages[i] = EGL_NO_IMAGE_KHR;
-            if (cnx->dso) {
-                if (cnx->egl.eglCreateImageKHR) {
-                    implImages[i] = cnx->egl.eglCreateImageKHR(
-                            dp->disp[i].dpy, ctx, target, buffer, attrib_list);
-                    if (implImages[i] != EGL_NO_IMAGE_KHR) {
-                        success = true;
-                    }
-                }
-            }
-        }
-
-        if (!success) {
-            // failure, if there was an error when we entered this function,
-            // the error flag must not be updated.
-            // Otherwise, the error is whatever happened in the implementation
-            // that faulted.
-            if (currentError != EGL_SUCCESS) {
-                setError(currentError, EGL_NO_IMAGE_KHR);
-            }
-            return EGL_NO_IMAGE_KHR;
-        } else {
-            // In case of success, we need to clear all error flags
-            // (especially those caused by the implementation that didn't
-            // succeed). TODO: we could avoid this if we knew this was
-            // a "full" success (all implementation succeeded).
-            eglGetError();
-        }
-
-        egl_image_t* result = new egl_image_t(dpy, ctx);
-        memcpy(result->images, implImages, sizeof(implImages));
-        return (EGLImageKHR)result;
-    }
-}
-
-EGLBoolean eglDestroyImageKHR(EGLDisplay dpy, EGLImageKHR img)
-{
-    clearError();
-
-    egl_display_t const * const dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    ImageRef _i(img);
-    if (!_i.get()) return setError(EGL_BAD_PARAMETER, EGL_FALSE);
-
-    egl_image_t* image = get_image(img);
-    bool success = false;
-    for (int i=0 ; i<IMPL_NUM_IMPLEMENTATIONS ; i++) {
-        egl_connection_t* const cnx = &gEGLImpl[i];
-        if (image->images[i] != EGL_NO_IMAGE_KHR) {
-            if (cnx->dso) {
-                if (cnx->egl.eglDestroyImageKHR) {
-                    if (cnx->egl.eglDestroyImageKHR(
-                            dp->disp[i].dpy, image->images[i])) {
-                        success = true;
-                    }
-                }
-            }
-        }
-    }
-    if (!success)
-        return EGL_FALSE;
-
-    _i.terminate();
-
-    return EGL_TRUE;
-}
-
-// ----------------------------------------------------------------------------
-// EGL_EGLEXT_VERSION 5
-// ----------------------------------------------------------------------------
-
-
-EGLSyncKHR eglCreateSyncKHR(EGLDisplay dpy, EGLenum type, const EGLint *attrib_list)
-{
-    clearError();
-
-    egl_display_t const * const dp = validate_display(dpy);
-    if (!dp) return EGL_NO_SYNC_KHR;
-
-    EGLContext ctx = eglGetCurrentContext();
-    ContextRef _c(ctx);
-    if (!_c.get()) return setError(EGL_BAD_CONTEXT, EGL_NO_SYNC_KHR);
-    if (!validate_display_context(dpy, ctx))
-        return EGL_NO_SYNC_KHR;
-    egl_context_t * const c = get_context(ctx);
-    EGLSyncKHR result = EGL_NO_SYNC_KHR;
-    if (c->cnx->egl.eglCreateSyncKHR) {
-        EGLSyncKHR sync = c->cnx->egl.eglCreateSyncKHR(
-                dp->disp[c->impl].dpy, type, attrib_list);
-        if (sync == EGL_NO_SYNC_KHR)
-            return sync;
-        result = (egl_sync_t*)new egl_sync_t(dpy, ctx, sync);
-    }
-    return (EGLSyncKHR)result;
-}
-
-EGLBoolean eglDestroySyncKHR(EGLDisplay dpy, EGLSyncKHR sync)
-{
-    clearError();
-
-    egl_display_t const * const dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    SyncRef _s(sync);
-    if (!_s.get()) return setError(EGL_BAD_PARAMETER, EGL_FALSE);
-    egl_sync_t* syncObject = get_sync(sync);
-
-    EGLContext ctx = syncObject->context;
-    ContextRef _c(ctx);
-    if (!_c.get()) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
-    if (!validate_display_context(dpy, ctx))
-        return EGL_FALSE;
-
-    EGLBoolean result = EGL_FALSE;
-    egl_context_t * const c = get_context(ctx);
-    if (c->cnx->egl.eglDestroySyncKHR) {
-        result = c->cnx->egl.eglDestroySyncKHR(
-                dp->disp[c->impl].dpy, syncObject->sync);
-        if (result)
-            _s.terminate();
-    }
-    return result;
-}
-
-EGLint eglClientWaitSyncKHR(EGLDisplay dpy, EGLSyncKHR sync, EGLint flags, EGLTimeKHR timeout)
-{
-    clearError();
-
-    egl_display_t const * const dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    SyncRef _s(sync);
-    if (!_s.get()) return setError(EGL_BAD_PARAMETER, EGL_FALSE);
-    egl_sync_t* syncObject = get_sync(sync);
-
-    EGLContext ctx = syncObject->context;
-    ContextRef _c(ctx);
-    if (!_c.get()) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
-    if (!validate_display_context(dpy, ctx))
-        return EGL_FALSE;
-
-    egl_context_t * const c = get_context(ctx);
-
-    if (c->cnx->egl.eglClientWaitSyncKHR) {
-        return c->cnx->egl.eglClientWaitSyncKHR(
-                dp->disp[c->impl].dpy, syncObject->sync, flags, timeout);
-    }
-
-    return EGL_FALSE;
-}
-
-EGLBoolean eglGetSyncAttribKHR(EGLDisplay dpy, EGLSyncKHR sync, EGLint attribute, EGLint *value)
-{
-    clearError();
-
-    egl_display_t const * const dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    SyncRef _s(sync);
-    if (!_s.get()) return setError(EGL_BAD_PARAMETER, EGL_FALSE);
-    egl_sync_t* syncObject = get_sync(sync);
-
-    EGLContext ctx = syncObject->context;
-    ContextRef _c(ctx);
-    if (!_c.get()) return setError(EGL_BAD_CONTEXT, EGL_FALSE);
-    if (!validate_display_context(dpy, ctx))
-        return EGL_FALSE;
-
-    egl_context_t * const c = get_context(ctx);
-
-    if (c->cnx->egl.eglGetSyncAttribKHR) {
-        return c->cnx->egl.eglGetSyncAttribKHR(
-                dp->disp[c->impl].dpy, syncObject->sync, attribute, value);
-    }
-
-    return EGL_FALSE;
-}
-
-// ----------------------------------------------------------------------------
-// ANDROID extensions
-// ----------------------------------------------------------------------------
-
-EGLBoolean eglSetSwapRectangleANDROID(EGLDisplay dpy, EGLSurface draw,
-        EGLint left, EGLint top, EGLint width, EGLint height)
-{
-    clearError();
-
-    egl_display_t const * const dp = validate_display(dpy);
-    if (!dp) return EGL_FALSE;
-
-    SurfaceRef _s(draw);
-    if (!_s.get()) return setError(EGL_BAD_SURFACE, EGL_FALSE);
-
-    if (!validate_display_surface(dpy, draw))
-        return EGL_FALSE;    
-    egl_surface_t const * const s = get_surface(draw);
-    if (s->cnx->egl.eglSetSwapRectangleANDROID) {
-        return s->cnx->egl.eglSetSwapRectangleANDROID(
-                dp->disp[s->impl].dpy, s->surface, left, top, width, height);
-    }
-    return setError(EGL_BAD_DISPLAY, NULL);
-}