diff --git a/libs/graphicsenv/Android.bp b/libs/graphicsenv/Android.bp
index 4da30e9..bab87ac 100644
--- a/libs/graphicsenv/Android.bp
+++ b/libs/graphicsenv/Android.bp
@@ -23,6 +23,7 @@
 
     shared_libs: [
         "liblog",
+        "libcutils",
     ],
 
     export_include_dirs: ["include"],
diff --git a/libs/graphicsenv/GraphicsEnv.cpp b/libs/graphicsenv/GraphicsEnv.cpp
index 2a7d76e..3328ad7 100644
--- a/libs/graphicsenv/GraphicsEnv.cpp
+++ b/libs/graphicsenv/GraphicsEnv.cpp
@@ -18,9 +18,12 @@
 #define LOG_TAG "GraphicsEnv"
 #include <graphicsenv/GraphicsEnv.h>
 
+#include <sys/prctl.h>
+
 #include <mutex>
 
 #include <android/dlext.h>
+#include <cutils/properties.h>
 #include <log/log.h>
 
 // TODO(b/37049319) Get this from a header once one exists
@@ -46,6 +49,14 @@
     return env;
 }
 
+int GraphicsEnv::getCanLoadSystemLibraries() {
+    if (property_get_bool("ro.debuggable", false) && prctl(PR_GET_DUMPABLE, 0, 0, 0, 0)) {
+        // Return an integer value since this crosses library boundaries
+        return 1;
+    }
+    return 0;
+}
+
 void GraphicsEnv::setDriverPath(const std::string path) {
     if (!mDriverPath.empty()) {
         ALOGV("ignoring attempt to change driver path from '%s' to '%s'",
@@ -181,4 +192,10 @@
 const char* android_getAngleAppPref() {
     return android::GraphicsEnv::getInstance().getAngleAppPref();
 }
+const char* android_getLayerPaths() {
+    return android::GraphicsEnv::getInstance().getLayerPaths().c_str();
+}
+const char* android_getDebugLayers() {
+    return android::GraphicsEnv::getInstance().getDebugLayers().c_str();
+}
 }
diff --git a/libs/graphicsenv/include/graphicsenv/GraphicsEnv.h b/libs/graphicsenv/include/graphicsenv/GraphicsEnv.h
index 00e8fc0..1783429 100644
--- a/libs/graphicsenv/include/graphicsenv/GraphicsEnv.h
+++ b/libs/graphicsenv/include/graphicsenv/GraphicsEnv.h
@@ -29,6 +29,8 @@
 public:
     static GraphicsEnv& getInstance();
 
+    int getCanLoadSystemLibraries();
+
     // Set a search path for loading graphics drivers. The path is a list of
     // directories separated by ':'. A directory can be contained in a zip file
     // (drivers must be stored uncompressed and page aligned); such elements
@@ -85,11 +87,13 @@
  *    will be removed soon.
  */
 extern "C" {
-android_namespace_t* android_getDriverNamespace();
-android_namespace_t* android_getAngleNamespace();
-const char* android_getAngleAppName();
-const char* android_getAngleAppPref();
-bool android_getAngleDeveloperOptIn();
+    android_namespace_t* android_getDriverNamespace();
+    android_namespace_t* android_getAngleNamespace();
+    const char* android_getAngleAppName();
+    const char* android_getAngleAppPref();
+    bool android_getAngleDeveloperOptIn();
+    const char* android_getLayerPaths();
+    const char* android_getDebugLayers();
 }
 
 #endif // ANDROID_UI_GRAPHICS_ENV_H
diff --git a/opengl/libs/Android.bp b/opengl/libs/Android.bp
index fb6a221..583aec9 100644
--- a/opengl/libs/Android.bp
+++ b/opengl/libs/Android.bp
@@ -140,6 +140,7 @@
         "EGL/egl_cache.cpp",
         "EGL/egl_display.cpp",
         "EGL/egl_object.cpp",
+        "EGL/egl_layers.cpp",
         "EGL/egl.cpp",
         "EGL/eglApi.cpp",
         "EGL/egl_platform_entries.cpp",
@@ -150,8 +151,11 @@
         "libvndksupport",
         "android.hardware.configstore@1.0",
         "android.hardware.configstore-utils",
+        "libbase",
         "libhidlbase",
         "libhidltransport",
+        "libnativebridge",
+        "libnativeloader",
         "libutils",
     ],
     static_libs: [
diff --git a/opengl/libs/EGL/egl.cpp b/opengl/libs/EGL/egl.cpp
index d0cfada..01795e0 100644
--- a/opengl/libs/EGL/egl.cpp
+++ b/opengl/libs/EGL/egl.cpp
@@ -30,11 +30,10 @@
 #include "egl_tls.h"
 #include "egl_display.h"
 #include "egl_object.h"
+#include "egl_layers.h"
 #include "CallStack.h"
 #include "Loader.h"
 
-typedef __eglMustCastToProperFunctionPointerType EGLFuncPointer;
-
 // ----------------------------------------------------------------------------
 namespace android {
 // ----------------------------------------------------------------------------
@@ -196,6 +195,14 @@
         cnx->dso = loader.open(cnx);
     }
 
+    // Check to see if any layers are enabled and route functions through them
+    if (cnx->dso) {
+        // Layers can be enabled long after the drivers have been loaded.
+        // They will only be initialized once.
+        LayerLoader& layer_loader(LayerLoader::getInstance());
+        layer_loader.InitLayers(cnx);
+    }
+
     return cnx->dso ? EGL_TRUE : EGL_FALSE;
 }
 
diff --git a/opengl/libs/EGL/egl_layers.cpp b/opengl/libs/EGL/egl_layers.cpp
new file mode 100644
index 0000000..6900b8b
--- /dev/null
+++ b/opengl/libs/EGL/egl_layers.cpp
@@ -0,0 +1,433 @@
+/*
+ ** Copyright 2018, The Android Open Source Project
+ **
+ ** Licensed under the Apache License, Version 2.0 (the "License");
+ ** you may not use this file except in compliance with the License.
+ ** You may obtain a copy of the License at
+ **
+ **     http://www.apache.org/licenses/LICENSE-2.0
+ **
+ ** Unless required by applicable law or agreed to in writing, software
+ ** distributed under the License is distributed on an "AS IS" BASIS,
+ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ** See the License for the specific language governing permissions and
+ ** limitations under the License.
+ */
+
+#include "egl_layers.h"
+
+#include <EGL/egl.h>
+#include <android-base/file.h>
+#include <android-base/strings.h>
+#include <android/dlext.h>
+#include <cutils/properties.h>
+#include <dlfcn.h>
+#include <graphicsenv/GraphicsEnv.h>
+#include <log/log.h>
+#include <nativebridge/native_bridge.h>
+#include <nativeloader/native_loader.h>
+#include <sys/prctl.h>
+
+namespace android {
+
+// GLES Layers
+//
+// - Layer discovery -
+// 1. Check for debug layer list from GraphicsEnv
+// 2. If none enabled, check system properties
+//
+// - Layer initializing -
+// TODO: ADD DETAIL ABOUT NEW INTERFACES
+// - InitializeLayer (provided by layer, called by loader)
+// - GetLayerProcAddress (provided by layer, called by loader)
+// - getNextLayerProcAddress (provided by loader, called by layer)
+//
+// 1. Walk through defs for egl and each gl version
+// 2. Call GetLayerProcAddress passing the name and the target hook entry point
+//   - This tells the layer the next point in the chain it should call
+// 3. Replace the hook with the layer's entry point
+//    - All entryoints will be present, anything unsupported by the driver will
+//      have gl_unimplemented
+//
+// - Extension layering -
+//  Not all functions are known to Android, so libEGL handles extensions.
+//  They are looked up by applications using eglGetProcAddress
+//  Layers can look them up with getNextLayerProcAddress
+
+const int kFuncCount = sizeof(platform_impl_t) / sizeof(char*) + sizeof(egl_t) / sizeof(char*) +
+        sizeof(gl_hooks_t) / sizeof(char*);
+
+typedef struct FunctionTable {
+    EGLFuncPointer x[kFuncCount];
+    EGLFuncPointer& operator[](int i) { return x[i]; }
+} FunctionTable;
+
+// TODO: Move these to class
+std::unordered_map<std::string, int> func_indices;
+// func_indices.reserve(kFuncCount);
+
+std::unordered_map<int, std::string> func_names;
+// func_names.reserve(kFuncCount);
+
+std::vector<FunctionTable> layer_functions;
+
+const void* getNextLayerProcAddress(void* layer_id, const char* name) {
+    // Use layer_id to find funcs for layer below current
+    // This is the same key provided in InitializeLayer
+    auto next_layer_funcs = reinterpret_cast<FunctionTable*>(layer_id);
+    EGLFuncPointer val;
+
+    if (func_indices.find(name) == func_indices.end()) {
+        // No entry for this function - it is an extension
+        // call down the GPA chain directly to the impl
+        ALOGV("getNextLayerProcAddress servicing %s", name);
+
+        // Look up which GPA we should use
+        int gpaIndex = func_indices["eglGetProcAddress"];
+        EGLFuncPointer gpaNext = (*next_layer_funcs)[gpaIndex];
+
+        ALOGV("Calling down the GPA chain (%llu) for %s", (unsigned long long)gpaNext, name);
+
+        // Call it for the requested function
+        typedef void* (*PFNEGLGETPROCADDRESSPROC)(const char*);
+        PFNEGLGETPROCADDRESSPROC next = reinterpret_cast<PFNEGLGETPROCADDRESSPROC>(gpaNext);
+
+        val = reinterpret_cast<EGLFuncPointer>(next(name));
+        ALOGV("Got back %llu for %s", (unsigned long long)val, name);
+
+        // We should store it now, but to do that, we need to move func_idx to the class so we can
+        // increment it separately
+        // TODO: Move func_idx to class and store the result of GPA
+        return reinterpret_cast<void*>(val);
+    }
+
+    // int index = func_indices[name];
+    // val = (*next_layer_funcs)[index];
+    // return reinterpret_cast<void*>(val);
+    return reinterpret_cast<void*>((*next_layer_funcs)[func_indices[name]]);
+}
+
+void SetupFuncMaps(FunctionTable& functions, char const* const* entries, EGLFuncPointer* curr,
+                   int& func_idx) {
+    while (*entries) {
+        const char* name = *entries;
+
+        // Some names overlap, only fill with initial entry
+        // This does mean that some indices will not be used
+        if (func_indices.find(name) == func_indices.end()) {
+            func_names[func_idx] = name;
+            func_indices[name] = func_idx;
+        }
+
+        // Populate layer_functions once with initial value
+        // These values will arrive in priority order, starting with platform entries
+        if (functions[func_idx] == nullptr) {
+            functions[func_idx] = *curr;
+        }
+
+        entries++;
+        curr++;
+        func_idx++;
+    }
+}
+
+LayerLoader& LayerLoader::getInstance() {
+    // This function is mutex protected in egl_init_drivers_locked and eglGetProcAddressImpl
+    static LayerLoader layer_loader;
+
+    if (!layer_loader.layers_loaded_) layer_loader.LoadLayers();
+
+    return layer_loader;
+}
+
+const char kSystemLayerLibraryDir[] = "/data/local/debug/gles";
+
+std::string LayerLoader::GetDebugLayers() {
+    // Layers can be specified at the Java level in GraphicsEnvironemnt
+    // gpu_debug_layers = layer1:layer2:layerN
+    std::string debug_layers = android_getDebugLayers();
+
+    if (debug_layers.empty()) {
+        // Only check system properties if Java settings are empty
+        char prop[PROPERTY_VALUE_MAX];
+        property_get("debug.gles.layers", prop, "");
+        debug_layers = prop;
+    }
+
+    return debug_layers;
+}
+
+EGLFuncPointer LayerLoader::ApplyLayer(layer_setup_func layer_setup, const char* name,
+                                       EGLFuncPointer next) {
+    // Walk through our list of LayerSetup functions (they will already be in reverse order) to
+    // build up a call chain from the driver
+
+    EGLFuncPointer layer_entry = next;
+
+    layer_entry = layer_setup(name, layer_entry);
+
+    if (next != layer_entry) {
+        ALOGV("We succeeded, replacing hook (%llu) with layer entry (%llu), for %s",
+              (unsigned long long)next, (unsigned long long)layer_entry, name);
+    }
+
+    return layer_entry;
+}
+
+EGLFuncPointer LayerLoader::ApplyLayers(const char* name, EGLFuncPointer next) {
+    if (!layers_loaded_ || layer_setup_.empty()) return next;
+
+    ALOGV("ApplyLayers called for %s with next (%llu), current_layer_ (%i)", name,
+          (unsigned long long)next, current_layer_);
+
+    EGLFuncPointer val = next;
+
+    // Only ApplyLayers for layers that have been setup, not all layers yet
+    for (unsigned i = 0; i < current_layer_; i++) {
+        ALOGV("ApplyLayers: Calling ApplyLayer with i = %i for %s with next (%llu)", i, name,
+              (unsigned long long)next);
+        val = ApplyLayer(layer_setup_[i], name, val);
+    }
+
+    ALOGV("ApplyLayers returning %llu for %s", (unsigned long long)val, name);
+
+    return val;
+}
+
+void LayerLoader::LayerPlatformEntries(layer_setup_func layer_setup, EGLFuncPointer* curr,
+                                       char const* const* entries) {
+    while (*entries) {
+        char const* name = *entries;
+
+        EGLFuncPointer prev = *curr;
+
+        // Pass the existing entry point into the layer, replace the call with return value
+        *curr = ApplyLayer(layer_setup, name, *curr);
+
+        if (prev != *curr) {
+            ALOGV("LayerPlatformEntries: Replaced (%llu) with platform entry (%llu), for %s",
+                  (unsigned long long)prev, (unsigned long long)*curr, name);
+        } else {
+            ALOGV("LayerPlatformEntries: No change(%llu) for %s, which means layer did not "
+                  "intercept",
+                  (unsigned long long)prev, name);
+        }
+
+        curr++;
+        entries++;
+    }
+}
+
+void LayerLoader::LayerDriverEntries(layer_setup_func layer_setup, EGLFuncPointer* curr,
+                                     char const* const* entries) {
+    while (*entries) {
+        char const* name = *entries;
+        EGLFuncPointer prev = *curr;
+
+        // Only apply layers to driver entries if not handled by the platform
+        if (FindPlatformImplAddr(name) == nullptr) {
+            // Pass the existing entry point into the layer, replace the call with return value
+            *curr = ApplyLayer(layer_setup, name, *prev);
+
+            if (prev != *curr) {
+                ALOGV("LayerDriverEntries: Replaced (%llu) with platform entry (%llu), for %s",
+                      (unsigned long long)prev, (unsigned long long)*curr, name);
+            }
+
+        } else {
+            ALOGV("LayerDriverEntries: Skipped (%llu) for %s", (unsigned long long)prev, name);
+        }
+
+        curr++;
+        entries++;
+    }
+}
+
+bool LayerLoader::Initialized() {
+    return initialized_;
+}
+
+void LayerLoader::InitLayers(egl_connection_t* cnx) {
+    if (!layers_loaded_) return;
+
+    if (initialized_) return;
+
+    if (layer_setup_.empty()) {
+        initialized_ = true;
+        return;
+    }
+
+    // Include the driver in layer_functions
+    layer_functions.resize(layer_setup_.size() + 1);
+
+    // Walk through the initial lists and create layer_functions[0]
+    int func_idx = 0;
+    char const* const* entries;
+    EGLFuncPointer* curr;
+
+    entries = platform_names;
+    curr = reinterpret_cast<EGLFuncPointer*>(&cnx->platform);
+    SetupFuncMaps(layer_functions[0], entries, curr, func_idx);
+    ALOGV("InitLayers: func_idx after platform_names: %i", func_idx);
+
+    entries = egl_names;
+    curr = reinterpret_cast<EGLFuncPointer*>(&cnx->egl);
+    SetupFuncMaps(layer_functions[0], entries, curr, func_idx);
+    ALOGV("InitLayers: func_idx after egl_names: %i", func_idx);
+
+    entries = gl_names;
+    curr = reinterpret_cast<EGLFuncPointer*>(&cnx->hooks[egl_connection_t::GLESv2_INDEX]->gl);
+    SetupFuncMaps(layer_functions[0], entries, curr, func_idx);
+    ALOGV("InitLayers: func_idx after gl_names: %i", func_idx);
+
+    // Walk through each layer's entry points per API, starting just above the driver
+    for (current_layer_ = 0; current_layer_ < layer_setup_.size(); current_layer_++) {
+        // Init the layer with a key that points to layer just below it
+        layer_init_[current_layer_](reinterpret_cast<void*>(&layer_functions[current_layer_]),
+                                    reinterpret_cast<PFNEGLGETNEXTLAYERPROCADDRESSPROC>(
+                                            getNextLayerProcAddress));
+
+        // Check functions implemented by the platform
+        func_idx = 0;
+        entries = platform_names;
+        curr = reinterpret_cast<EGLFuncPointer*>(&cnx->platform);
+        LayerPlatformEntries(layer_setup_[current_layer_], curr, entries);
+
+        // Populate next function table after layers have been applied
+        SetupFuncMaps(layer_functions[current_layer_ + 1], entries, curr, func_idx);
+
+        // EGL
+        entries = egl_names;
+        curr = reinterpret_cast<EGLFuncPointer*>(&cnx->egl);
+        LayerDriverEntries(layer_setup_[current_layer_], curr, entries);
+
+        // Populate next function table after layers have been applied
+        SetupFuncMaps(layer_functions[current_layer_ + 1], entries, curr, func_idx);
+
+        // GLES 2+
+        // NOTE: We route calls to GLESv2 hooks, not GLESv1, so layering does not support GLES 1.x
+        // If it were added in the future, a different layer initialization model would be needed,
+        // that defers loading GLES entrypoints until after eglMakeCurrent, so two phase
+        // initialization.
+        entries = gl_names;
+        curr = reinterpret_cast<EGLFuncPointer*>(&cnx->hooks[egl_connection_t::GLESv2_INDEX]->gl);
+        LayerDriverEntries(layer_setup_[current_layer_], curr, entries);
+
+        // Populate next function table after layers have been applied
+        SetupFuncMaps(layer_functions[current_layer_ + 1], entries, curr, func_idx);
+    }
+
+    // We only want to apply layers once
+    initialized_ = true;
+}
+
+void LayerLoader::LoadLayers() {
+    std::string debug_layers = GetDebugLayers();
+
+    // If no layers are specified, we're done
+    if (debug_layers.empty()) return;
+
+    // Only enable the system search path for non-user builds
+    std::string system_path;
+    if (property_get_bool("ro.debuggable", false) && prctl(PR_GET_DUMPABLE, 0, 0, 0, 0)) {
+        system_path = kSystemLayerLibraryDir;
+    }
+
+    ALOGI("Debug layer list: %s", debug_layers.c_str());
+    std::vector<std::string> layers = android::base::Split(debug_layers, ":");
+
+    // Load the layers in reverse order so we start with the driver's entrypoint and work our way up
+    for (int32_t i = layers.size() - 1; i >= 0; i--) {
+        // Check each layer path for the layer
+        std::vector<std::string> paths = android::base::Split(android_getLayerPaths(), ":");
+
+        if (!system_path.empty()) {
+            // Prepend the system paths so they override other layers
+            auto it = paths.begin();
+            paths.insert(it, system_path);
+        }
+
+        bool layer_found = false;
+        for (uint32_t j = 0; j < paths.size() && !layer_found; j++) {
+            std::string layer;
+
+            ALOGI("Searching %s for GLES layers", paths[j].c_str());
+
+            // Realpath will return null for non-existent files
+            android::base::Realpath(paths[j] + "/" + layers[i], &layer);
+
+            if (!layer.empty()) {
+                layer_found = true;
+                ALOGI("GLES layer found: %s", layer.c_str());
+
+                // Load the layer
+                //
+                // TODO: This code is common with Vulkan loader, refactor
+                //
+                // Libraries in the system layer library dir can't be loaded into
+                // the application namespace. That causes compatibility problems, since
+                // any symbol dependencies will be resolved by system libraries. They
+                // can't safely use libc++_shared, for example. Which is one reason
+                // (among several) we only allow them in non-user builds.
+                void* handle = nullptr;
+                auto app_namespace = android::GraphicsEnv::getInstance().getAppNamespace();
+                if (app_namespace && !android::base::StartsWith(layer, kSystemLayerLibraryDir)) {
+                    bool native_bridge = false;
+                    std::string error_message;
+                    handle = OpenNativeLibrary(app_namespace, layer.c_str(), &native_bridge,
+                                               &error_message);
+                    if (!handle) {
+                        ALOGE("Failed to load layer %s with error: %s", layer.c_str(),
+                              error_message.c_str());
+                        return;
+                    }
+
+                } else {
+                    handle = dlopen(layer.c_str(), RTLD_NOW | RTLD_LOCAL);
+                }
+
+                if (handle) {
+                    ALOGV("Loaded layer handle (%llu) for layer %s", (unsigned long long)handle,
+                          layers[i].c_str());
+                } else {
+                    // If the layer is found but can't be loaded, try setenforce 0
+                    const char* dlsym_error = dlerror();
+                    ALOGE("Failed to load layer %s with error: %s", layer.c_str(), dlsym_error);
+                    return;
+                }
+
+                // Find the layer's Initialize function
+                std::string init_func = "InitializeLayer";
+                ALOGV("Looking for entrypoint %s", init_func.c_str());
+
+                layer_init_func LayerInit =
+                        reinterpret_cast<layer_init_func>(dlsym(handle, init_func.c_str()));
+                if (LayerInit) {
+                    ALOGV("Found %s for layer %s", init_func.c_str(), layer.c_str());
+                    layer_init_.push_back(LayerInit);
+                } else {
+                    ALOGE("Failed to dlsym %s for layer %s", init_func.c_str(), layer.c_str());
+                    return;
+                }
+
+                // Find the layer's setup function
+                std::string setup_func = "GetLayerProcAddress";
+                ALOGV("Looking for entrypoint %s", setup_func.c_str());
+
+                layer_setup_func LayerSetup =
+                        reinterpret_cast<layer_setup_func>(dlsym(handle, setup_func.c_str()));
+                if (LayerSetup) {
+                    ALOGV("Found %s for layer %s", setup_func.c_str(), layer.c_str());
+                    layer_setup_.push_back(LayerSetup);
+                } else {
+                    ALOGE("Failed to dlsym %s for layer %s", setup_func.c_str(), layer.c_str());
+                    return;
+                }
+            }
+        }
+    }
+    // Track this so we only attempt to load these once
+    layers_loaded_ = true;
+}
+
+} // namespace android
diff --git a/opengl/libs/EGL/egl_layers.h b/opengl/libs/EGL/egl_layers.h
new file mode 100644
index 0000000..e401b44
--- /dev/null
+++ b/opengl/libs/EGL/egl_layers.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_EGL_LAYERS_H
+#define ANDROID_EGL_LAYERS_H
+
+#include <string>
+#include <unordered_map>
+#include <vector>
+
+#include <EGL/egldefs.h>
+
+#include "egl_platform_entries.h"
+
+typedef __eglMustCastToProperFunctionPointerType EGLFuncPointer;
+
+namespace android {
+
+class LayerLoader {
+public:
+    static LayerLoader& getInstance();
+    ~LayerLoader(){};
+
+    typedef void* (*PFNEGLGETNEXTLAYERPROCADDRESSPROC)(void*, const char*);
+    typedef EGLFuncPointer (*layer_init_func)(
+            const void* layer_id, PFNEGLGETNEXTLAYERPROCADDRESSPROC get_next_layer_proc_address);
+    typedef EGLFuncPointer (*layer_setup_func)(const char* name, EGLFuncPointer next);
+
+    void LoadLayers();
+    void InitLayers(egl_connection_t*);
+    void LayerPlatformEntries(layer_setup_func layer_setup, EGLFuncPointer*, char const* const*);
+    void LayerDriverEntries(layer_setup_func layer_setup, EGLFuncPointer*, char const* const*);
+    bool Initialized();
+    std::string GetDebugLayers();
+
+    EGLFuncPointer GetGpaNext(unsigned i);
+    EGLFuncPointer ApplyLayer(layer_setup_func layer_setup, const char* name, EGLFuncPointer next);
+    EGLFuncPointer ApplyLayers(const char* name, EGLFuncPointer next);
+
+    std::vector<layer_init_func> layer_init_;
+    std::vector<layer_setup_func> layer_setup_;
+
+private:
+    LayerLoader() : layers_loaded_(false), initialized_(false), current_layer_(0){};
+    bool layers_loaded_;
+    bool initialized_;
+    unsigned current_layer_;
+};
+
+}; // namespace android
+
+#endif // ANDROID_EGL_LAYERS_H
diff --git a/opengl/libs/EGL/egl_platform_entries.cpp b/opengl/libs/EGL/egl_platform_entries.cpp
index 296ee44..0d69a65 100644
--- a/opengl/libs/EGL/egl_platform_entries.cpp
+++ b/opengl/libs/EGL/egl_platform_entries.cpp
@@ -30,6 +30,8 @@
 #include <EGL/eglext_angle.h>
 
 #include <android/hardware_buffer.h>
+#include <android-base/strings.h>
+#include <graphicsenv/GraphicsEnv.h>
 #include <private/android/AHardwareBufferHelpers.h>
 
 #include <cutils/compiler.h>
@@ -47,6 +49,7 @@
 
 #include "egl_display.h"
 #include "egl_object.h"
+#include "egl_layers.h"
 #include "egl_tls.h"
 #include "egl_trace.h"
 
@@ -1158,54 +1161,71 @@
     // this protects accesses to sGLExtentionMap and sGLExtentionSlot
     pthread_mutex_lock(&sExtensionMapMutex);
 
-        /*
-         * 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.
-         *
-         */
+    /*
+     * 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 std::string name(procname);
+    const std::string name(procname);
 
     auto& extentionMap = sGLExtentionMap;
     auto pos = extentionMap.find(name);
-        addr = (pos != extentionMap.end()) ? pos->second : nullptr;
-        const int slot = sGLExtentionSlot;
+    addr = (pos != extentionMap.end()) ? pos->second : nullptr;
+    const int slot = sGLExtentionSlot;
 
-        ALOGE_IF(slot >= MAX_NUMBER_OF_GL_EXTENSIONS,
-                "no more slots for eglGetProcAddress(\"%s\")",
-                procname);
+    ALOGE_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;
+    egl_connection_t* const cnx = &gEGLImpl;
+    LayerLoader& layer_loader(LayerLoader::getInstance());
 
-            egl_connection_t* const cnx = &gEGLImpl;
-            if (cnx->dso && cnx->egl.eglGetProcAddress) {
-                // Extensions are independent of the bound context
-                addr =
-                cnx->hooks[egl_connection_t::GLESv1_INDEX]->ext.extensions[slot] =
-                cnx->hooks[egl_connection_t::GLESv2_INDEX]->ext.extensions[slot] =
-                        cnx->egl.eglGetProcAddress(procname);
-                if (addr) found = true;
-            }
+    if (!addr && (slot < MAX_NUMBER_OF_GL_EXTENSIONS)) {
 
-            if (found) {
-                addr = gExtensionForwarders[slot];
+        if (cnx->dso && cnx->egl.eglGetProcAddress) {
+
+            // Extensions are independent of the bound context
+            addr = cnx->egl.eglGetProcAddress(procname);
+            if (addr) {
+
+                // purposefully track the bottom of the stack in extensionMap
                 extentionMap[name] = addr;
+
+                // Apply layers
+                addr = layer_loader.ApplyLayers(procname, addr);
+
+                // Track the top most entry point
+                cnx->hooks[egl_connection_t::GLESv1_INDEX]->ext.extensions[slot] =
+                cnx->hooks[egl_connection_t::GLESv2_INDEX]->ext.extensions[slot] = addr;
+                addr = gExtensionForwarders[slot];
                 sGLExtentionSlot++;
             }
         }
 
+    } else if (slot < MAX_NUMBER_OF_GL_EXTENSIONS) {
+
+        // We've seen this func before, but we tracked the bottom, so re-apply layers
+        // More layers might have been enabled
+        addr = layer_loader.ApplyLayers(procname, addr);
+
+        // Track the top most entry point
+        cnx->hooks[egl_connection_t::GLESv1_INDEX]->ext.extensions[slot] =
+        cnx->hooks[egl_connection_t::GLESv2_INDEX]->ext.extensions[slot] = addr;
+        addr = gExtensionForwarders[slot];
+    }
+
     pthread_mutex_unlock(&sExtensionMapMutex);
     return addr;
 }