diff --git a/services/surfaceflinger/RenderEngine/RenderEngine.cpp b/services/surfaceflinger/RenderEngine/RenderEngine.cpp
index f00367f..a63085e 100644
--- a/services/surfaceflinger/RenderEngine/RenderEngine.cpp
+++ b/services/surfaceflinger/RenderEngine/RenderEngine.cpp
@@ -37,131 +37,18 @@
 namespace android {
 namespace renderengine {
 
+std::unique_ptr<impl::RenderEngine> RenderEngine::create(int hwcFormat, uint32_t featureFlags) {
+    return renderengine::gl::GLES20RenderEngine::create(hwcFormat, featureFlags);
+}
+
 RenderEngine::~RenderEngine() = default;
 
 namespace impl {
 
-std::unique_ptr<RenderEngine> RenderEngine::create(int hwcFormat, uint32_t featureFlags) {
-    // initialize EGL for the default display
-    EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
-    if (!eglInitialize(display, nullptr, nullptr)) {
-        LOG_ALWAYS_FATAL("failed to initialize EGL");
-    }
-
-    GLExtensions& extensions = GLExtensions::getInstance();
-    extensions.initWithEGLStrings(eglQueryStringImplementationANDROID(display, EGL_VERSION),
-                                  eglQueryStringImplementationANDROID(display, EGL_EXTENSIONS));
-
-    // The code assumes that ES2 or later is available if this extension is
-    // supported.
-    EGLConfig config = EGL_NO_CONFIG;
-    if (!extensions.hasNoConfigContext()) {
-        config = chooseEglConfig(display, hwcFormat, /*logConfig*/ true);
-    }
-
-    EGLint renderableType = 0;
-    if (config == EGL_NO_CONFIG) {
-        renderableType = EGL_OPENGL_ES2_BIT;
-    } else if (!eglGetConfigAttrib(display, config, EGL_RENDERABLE_TYPE, &renderableType)) {
-        LOG_ALWAYS_FATAL("can't query EGLConfig RENDERABLE_TYPE");
-    }
-    EGLint contextClientVersion = 0;
-    if (renderableType & EGL_OPENGL_ES2_BIT) {
-        contextClientVersion = 2;
-    } else if (renderableType & EGL_OPENGL_ES_BIT) {
-        contextClientVersion = 1;
-    } else {
-        LOG_ALWAYS_FATAL("no supported EGL_RENDERABLE_TYPEs");
-    }
-
-    std::vector<EGLint> contextAttributes;
-    contextAttributes.reserve(6);
-    contextAttributes.push_back(EGL_CONTEXT_CLIENT_VERSION);
-    contextAttributes.push_back(contextClientVersion);
-    bool useContextPriority = extensions.hasContextPriority() &&
-                              (featureFlags & RenderEngine::USE_HIGH_PRIORITY_CONTEXT);
-    if (useContextPriority) {
-        contextAttributes.push_back(EGL_CONTEXT_PRIORITY_LEVEL_IMG);
-        contextAttributes.push_back(EGL_CONTEXT_PRIORITY_HIGH_IMG);
-    }
-    contextAttributes.push_back(EGL_NONE);
-
-    EGLContext ctxt = eglCreateContext(display, config, nullptr, contextAttributes.data());
-
-    // if can't create a GL context, we can only abort.
-    LOG_ALWAYS_FATAL_IF(ctxt == EGL_NO_CONTEXT, "EGLContext creation failed");
-
-    // now figure out what version of GL did we actually get
-    // NOTE: a dummy surface is not needed if KHR_create_context is supported
-
-    EGLConfig dummyConfig = config;
-    if (dummyConfig == EGL_NO_CONFIG) {
-        dummyConfig = chooseEglConfig(display, hwcFormat, /*logConfig*/ true);
-    }
-    EGLint attribs[] = {EGL_WIDTH, 1, EGL_HEIGHT, 1, EGL_NONE, EGL_NONE};
-    EGLSurface dummy = eglCreatePbufferSurface(display, dummyConfig, attribs);
-    LOG_ALWAYS_FATAL_IF(dummy == EGL_NO_SURFACE, "can't create dummy pbuffer");
-    EGLBoolean success = eglMakeCurrent(display, dummy, dummy, ctxt);
-    LOG_ALWAYS_FATAL_IF(!success, "can't make dummy pbuffer current");
-
-    extensions.initWithGLStrings(glGetString(GL_VENDOR), glGetString(GL_RENDERER),
-                                 glGetString(GL_VERSION), glGetString(GL_EXTENSIONS));
-
-    GlesVersion version = parseGlesVersion(extensions.getVersion());
-
-    // initialize the renderer while GL is current
-
-    std::unique_ptr<RenderEngine> engine;
-    switch (version) {
-        case GLES_VERSION_1_0:
-        case GLES_VERSION_1_1:
-            LOG_ALWAYS_FATAL("SurfaceFlinger requires OpenGL ES 2.0 minimum to run.");
-            break;
-        case GLES_VERSION_2_0:
-        case GLES_VERSION_3_0:
-            engine = std::make_unique<GLES20RenderEngine>(featureFlags);
-            break;
-    }
-    engine->setEGLHandles(display, config, ctxt);
-
-    ALOGI("OpenGL ES informations:");
-    ALOGI("vendor    : %s", extensions.getVendor());
-    ALOGI("renderer  : %s", extensions.getRenderer());
-    ALOGI("version   : %s", extensions.getVersion());
-    ALOGI("extensions: %s", extensions.getExtensions());
-    ALOGI("GL_MAX_TEXTURE_SIZE = %zu", engine->getMaxTextureSize());
-    ALOGI("GL_MAX_VIEWPORT_DIMS = %zu", engine->getMaxViewportDims());
-
-    eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
-    eglDestroySurface(display, dummy);
-
-    return engine;
-}
-
 RenderEngine::RenderEngine(uint32_t featureFlags)
-      : mEGLDisplay(EGL_NO_DISPLAY),
-        mEGLConfig(nullptr),
-        mEGLContext(EGL_NO_CONTEXT),
-        mFeatureFlags(featureFlags) {}
+      : mFeatureFlags(featureFlags) {}
 
-RenderEngine::~RenderEngine() {
-    eglMakeCurrent(mEGLDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
-    eglTerminate(mEGLDisplay);
-}
-
-void RenderEngine::setEGLHandles(EGLDisplay display, EGLConfig config, EGLContext ctxt) {
-    mEGLDisplay = display;
-    mEGLConfig = config;
-    mEGLContext = ctxt;
-}
-
-EGLDisplay RenderEngine::getEGLDisplay() const {
-    return mEGLDisplay;
-}
-
-EGLConfig RenderEngine::getEGLConfig() const {
-    return mEGLConfig;
-}
+RenderEngine::~RenderEngine() = default;
 
 bool RenderEngine::useNativeFenceSync() const {
     return SyncFeatures::getInstance().useNativeFenceSync();
@@ -171,185 +58,6 @@
     return SyncFeatures::getInstance().useWaitSync();
 }
 
-RenderEngine::GlesVersion RenderEngine::parseGlesVersion(const char* str) {
-    int major, minor;
-    if (sscanf(str, "OpenGL ES-CM %d.%d", &major, &minor) != 2) {
-        if (sscanf(str, "OpenGL ES %d.%d", &major, &minor) != 2) {
-            ALOGW("Unable to parse GL_VERSION string: \"%s\"", str);
-            return GLES_VERSION_1_0;
-        }
-    }
-
-    if (major == 1 && minor == 0) return GLES_VERSION_1_0;
-    if (major == 1 && minor >= 1) return GLES_VERSION_1_1;
-    if (major == 2 && minor >= 0) return GLES_VERSION_2_0;
-    if (major == 3 && minor >= 0) return GLES_VERSION_3_0;
-
-    ALOGW("Unrecognized OpenGL ES version: %d.%d", major, minor);
-    return GLES_VERSION_1_0;
-}
-
-void RenderEngine::dump(String8& result) {
-    const GLExtensions& extensions = GLExtensions::getInstance();
-
-    result.appendFormat("EGL implementation : %s\n", extensions.getEGLVersion());
-    result.appendFormat("%s\n", extensions.getEGLExtensions());
-
-    result.appendFormat("GLES: %s, %s, %s\n", extensions.getVendor(), extensions.getRenderer(),
-                        extensions.getVersion());
-    result.appendFormat("%s\n", extensions.getExtensions());
-}
-
-static status_t selectConfigForAttribute(EGLDisplay dpy, EGLint const* attrs, EGLint attribute,
-                                         EGLint wanted, EGLConfig* outConfig) {
-    EGLint numConfigs = -1, n = 0;
-    eglGetConfigs(dpy, nullptr, 0, &numConfigs);
-    EGLConfig* const configs = new EGLConfig[numConfigs];
-    eglChooseConfig(dpy, attrs, configs, numConfigs, &n);
-
-    if (n) {
-        if (attribute != EGL_NONE) {
-            for (int i = 0; i < n; i++) {
-                EGLint value = 0;
-                eglGetConfigAttrib(dpy, configs[i], attribute, &value);
-                if (wanted == value) {
-                    *outConfig = configs[i];
-                    delete[] configs;
-                    return NO_ERROR;
-                }
-            }
-        } else {
-            // just pick the first one
-            *outConfig = configs[0];
-            delete[] configs;
-            return NO_ERROR;
-        }
-    }
-    delete[] configs;
-    return NAME_NOT_FOUND;
-}
-
-class EGLAttributeVector {
-    struct Attribute;
-    class Adder;
-    friend class Adder;
-    KeyedVector<Attribute, EGLint> mList;
-    struct Attribute {
-        Attribute() : v(0){};
-        explicit Attribute(EGLint v) : v(v) {}
-        EGLint v;
-        bool operator<(const Attribute& other) const {
-            // this places EGL_NONE at the end
-            EGLint lhs(v);
-            EGLint rhs(other.v);
-            if (lhs == EGL_NONE) lhs = 0x7FFFFFFF;
-            if (rhs == EGL_NONE) rhs = 0x7FFFFFFF;
-            return lhs < rhs;
-        }
-    };
-    class Adder {
-        friend class EGLAttributeVector;
-        EGLAttributeVector& v;
-        EGLint attribute;
-        Adder(EGLAttributeVector& v, EGLint attribute) : v(v), attribute(attribute) {}
-
-    public:
-        void operator=(EGLint value) {
-            if (attribute != EGL_NONE) {
-                v.mList.add(Attribute(attribute), value);
-            }
-        }
-        operator EGLint() const { return v.mList[attribute]; }
-    };
-
-public:
-    EGLAttributeVector() { mList.add(Attribute(EGL_NONE), EGL_NONE); }
-    void remove(EGLint attribute) {
-        if (attribute != EGL_NONE) {
-            mList.removeItem(Attribute(attribute));
-        }
-    }
-    Adder operator[](EGLint attribute) { return Adder(*this, attribute); }
-    EGLint operator[](EGLint attribute) const { return mList[attribute]; }
-    // cast-operator to (EGLint const*)
-    operator EGLint const*() const { return &mList.keyAt(0).v; }
-};
-
-static status_t selectEGLConfig(EGLDisplay display, EGLint format, EGLint renderableType,
-                                EGLConfig* config) {
-    // select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if
-    // it is to be used with WIFI displays
-    status_t err;
-    EGLint wantedAttribute;
-    EGLint wantedAttributeValue;
-
-    EGLAttributeVector attribs;
-    if (renderableType) {
-        attribs[EGL_RENDERABLE_TYPE] = renderableType;
-        attribs[EGL_RECORDABLE_ANDROID] = EGL_TRUE;
-        attribs[EGL_SURFACE_TYPE] = EGL_WINDOW_BIT | EGL_PBUFFER_BIT;
-        attribs[EGL_FRAMEBUFFER_TARGET_ANDROID] = EGL_TRUE;
-        attribs[EGL_RED_SIZE] = 8;
-        attribs[EGL_GREEN_SIZE] = 8;
-        attribs[EGL_BLUE_SIZE] = 8;
-        attribs[EGL_ALPHA_SIZE] = 8;
-        wantedAttribute = EGL_NONE;
-        wantedAttributeValue = EGL_NONE;
-    } else {
-        // if no renderable type specified, fallback to a simplified query
-        wantedAttribute = EGL_NATIVE_VISUAL_ID;
-        wantedAttributeValue = format;
-    }
-
-    err = selectConfigForAttribute(display, attribs, wantedAttribute, wantedAttributeValue, config);
-    if (err == NO_ERROR) {
-        EGLint caveat;
-        if (eglGetConfigAttrib(display, *config, EGL_CONFIG_CAVEAT, &caveat))
-            ALOGW_IF(caveat == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!");
-    }
-
-    return err;
-}
-
-EGLConfig RenderEngine::chooseEglConfig(EGLDisplay display, int format, bool logConfig) {
-    status_t err;
-    EGLConfig config;
-
-    // First try to get an ES2 config
-    err = selectEGLConfig(display, format, EGL_OPENGL_ES2_BIT, &config);
-    if (err != NO_ERROR) {
-        // If ES2 fails, try ES1
-        err = selectEGLConfig(display, format, EGL_OPENGL_ES_BIT, &config);
-        if (err != NO_ERROR) {
-            // still didn't work, probably because we're on the emulator...
-            // try a simplified query
-            ALOGW("no suitable EGLConfig found, trying a simpler query");
-            err = selectEGLConfig(display, format, 0, &config);
-            if (err != NO_ERROR) {
-                // this EGL is too lame for android
-                LOG_ALWAYS_FATAL("no suitable EGLConfig found, giving up");
-            }
-        }
-    }
-
-    if (logConfig) {
-        // print some debugging info
-        EGLint r, g, b, a;
-        eglGetConfigAttrib(display, config, EGL_RED_SIZE, &r);
-        eglGetConfigAttrib(display, config, EGL_GREEN_SIZE, &g);
-        eglGetConfigAttrib(display, config, EGL_BLUE_SIZE, &b);
-        eglGetConfigAttrib(display, config, EGL_ALPHA_SIZE, &a);
-        ALOGI("EGL information:");
-        ALOGI("vendor    : %s", eglQueryString(display, EGL_VENDOR));
-        ALOGI("version   : %s", eglQueryString(display, EGL_VERSION));
-        ALOGI("extensions: %s", eglQueryString(display, EGL_EXTENSIONS));
-        ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS) ?: "Not Supported");
-        ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, config);
-    }
-
-    return config;
-}
-
 }  // namespace impl
 }  // namespace renderengine
 }  // namespace android
diff --git a/services/surfaceflinger/RenderEngine/gl/GLES20RenderEngine.cpp b/services/surfaceflinger/RenderEngine/gl/GLES20RenderEngine.cpp
index 61df675..7121cc2 100644
--- a/services/surfaceflinger/RenderEngine/gl/GLES20RenderEngine.cpp
+++ b/services/surfaceflinger/RenderEngine/gl/GLES20RenderEngine.cpp
@@ -44,6 +44,8 @@
 #include "Program.h"
 #include "ProgramCache.h"
 
+extern "C" EGLAPI const char* eglQueryStringImplementationANDROID(EGLDisplay dpy, EGLint name);
+
 bool checkGlError(const char* op, int lineNumber) {
     bool errorFound = false;
     GLint error = glGetError();
@@ -109,8 +111,259 @@
 
 using ui::Dataspace;
 
+static status_t selectConfigForAttribute(EGLDisplay dpy, EGLint const* attrs, EGLint attribute,
+                                         EGLint wanted, EGLConfig* outConfig) {
+    EGLint numConfigs = -1, n = 0;
+    eglGetConfigs(dpy, nullptr, 0, &numConfigs);
+    EGLConfig* const configs = new EGLConfig[numConfigs];
+    eglChooseConfig(dpy, attrs, configs, numConfigs, &n);
+
+    if (n) {
+        if (attribute != EGL_NONE) {
+            for (int i = 0; i < n; i++) {
+                EGLint value = 0;
+                eglGetConfigAttrib(dpy, configs[i], attribute, &value);
+                if (wanted == value) {
+                    *outConfig = configs[i];
+                    delete[] configs;
+                    return NO_ERROR;
+                }
+            }
+        } else {
+            // just pick the first one
+            *outConfig = configs[0];
+            delete[] configs;
+            return NO_ERROR;
+        }
+    }
+    delete[] configs;
+    return NAME_NOT_FOUND;
+}
+
+class EGLAttributeVector {
+    struct Attribute;
+    class Adder;
+    friend class Adder;
+    KeyedVector<Attribute, EGLint> mList;
+    struct Attribute {
+        Attribute() : v(0){};
+        explicit Attribute(EGLint v) : v(v) {}
+        EGLint v;
+        bool operator<(const Attribute& other) const {
+            // this places EGL_NONE at the end
+            EGLint lhs(v);
+            EGLint rhs(other.v);
+            if (lhs == EGL_NONE) lhs = 0x7FFFFFFF;
+            if (rhs == EGL_NONE) rhs = 0x7FFFFFFF;
+            return lhs < rhs;
+        }
+    };
+    class Adder {
+        friend class EGLAttributeVector;
+        EGLAttributeVector& v;
+        EGLint attribute;
+        Adder(EGLAttributeVector& v, EGLint attribute) : v(v), attribute(attribute) {}
+
+    public:
+        void operator=(EGLint value) {
+            if (attribute != EGL_NONE) {
+                v.mList.add(Attribute(attribute), value);
+            }
+        }
+        operator EGLint() const { return v.mList[attribute]; }
+    };
+
+public:
+    EGLAttributeVector() { mList.add(Attribute(EGL_NONE), EGL_NONE); }
+    void remove(EGLint attribute) {
+        if (attribute != EGL_NONE) {
+            mList.removeItem(Attribute(attribute));
+        }
+    }
+    Adder operator[](EGLint attribute) { return Adder(*this, attribute); }
+    EGLint operator[](EGLint attribute) const { return mList[attribute]; }
+    // cast-operator to (EGLint const*)
+    operator EGLint const*() const { return &mList.keyAt(0).v; }
+};
+
+static status_t selectEGLConfig(EGLDisplay display, EGLint format, EGLint renderableType,
+                                EGLConfig* config) {
+    // select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if
+    // it is to be used with WIFI displays
+    status_t err;
+    EGLint wantedAttribute;
+    EGLint wantedAttributeValue;
+
+    EGLAttributeVector attribs;
+    if (renderableType) {
+        attribs[EGL_RENDERABLE_TYPE] = renderableType;
+        attribs[EGL_RECORDABLE_ANDROID] = EGL_TRUE;
+        attribs[EGL_SURFACE_TYPE] = EGL_WINDOW_BIT | EGL_PBUFFER_BIT;
+        attribs[EGL_FRAMEBUFFER_TARGET_ANDROID] = EGL_TRUE;
+        attribs[EGL_RED_SIZE] = 8;
+        attribs[EGL_GREEN_SIZE] = 8;
+        attribs[EGL_BLUE_SIZE] = 8;
+        attribs[EGL_ALPHA_SIZE] = 8;
+        wantedAttribute = EGL_NONE;
+        wantedAttributeValue = EGL_NONE;
+    } else {
+        // if no renderable type specified, fallback to a simplified query
+        wantedAttribute = EGL_NATIVE_VISUAL_ID;
+        wantedAttributeValue = format;
+    }
+
+    err = selectConfigForAttribute(display, attribs, wantedAttribute, wantedAttributeValue, config);
+    if (err == NO_ERROR) {
+        EGLint caveat;
+        if (eglGetConfigAttrib(display, *config, EGL_CONFIG_CAVEAT, &caveat))
+            ALOGW_IF(caveat == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!");
+    }
+
+    return err;
+}
+
+std::unique_ptr<GLES20RenderEngine> GLES20RenderEngine::create(int hwcFormat,
+                                                               uint32_t featureFlags) {
+    // initialize EGL for the default display
+    EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+    if (!eglInitialize(display, nullptr, nullptr)) {
+        LOG_ALWAYS_FATAL("failed to initialize EGL");
+    }
+
+    GLExtensions& extensions = GLExtensions::getInstance();
+    extensions.initWithEGLStrings(eglQueryStringImplementationANDROID(display, EGL_VERSION),
+                                  eglQueryStringImplementationANDROID(display, EGL_EXTENSIONS));
+
+    // The code assumes that ES2 or later is available if this extension is
+    // supported.
+    EGLConfig config = EGL_NO_CONFIG;
+    if (!extensions.hasNoConfigContext()) {
+        config = chooseEglConfig(display, hwcFormat, /*logConfig*/ true);
+    }
+
+    EGLint renderableType = 0;
+    if (config == EGL_NO_CONFIG) {
+        renderableType = EGL_OPENGL_ES2_BIT;
+    } else if (!eglGetConfigAttrib(display, config, EGL_RENDERABLE_TYPE, &renderableType)) {
+        LOG_ALWAYS_FATAL("can't query EGLConfig RENDERABLE_TYPE");
+    }
+    EGLint contextClientVersion = 0;
+    if (renderableType & EGL_OPENGL_ES2_BIT) {
+        contextClientVersion = 2;
+    } else if (renderableType & EGL_OPENGL_ES_BIT) {
+        contextClientVersion = 1;
+    } else {
+        LOG_ALWAYS_FATAL("no supported EGL_RENDERABLE_TYPEs");
+    }
+
+    std::vector<EGLint> contextAttributes;
+    contextAttributes.reserve(6);
+    contextAttributes.push_back(EGL_CONTEXT_CLIENT_VERSION);
+    contextAttributes.push_back(contextClientVersion);
+    bool useContextPriority = extensions.hasContextPriority() &&
+                              (featureFlags & RenderEngine::USE_HIGH_PRIORITY_CONTEXT);
+    if (useContextPriority) {
+        contextAttributes.push_back(EGL_CONTEXT_PRIORITY_LEVEL_IMG);
+        contextAttributes.push_back(EGL_CONTEXT_PRIORITY_HIGH_IMG);
+    }
+    contextAttributes.push_back(EGL_NONE);
+
+    EGLContext ctxt = eglCreateContext(display, config, nullptr, contextAttributes.data());
+
+    // if can't create a GL context, we can only abort.
+    LOG_ALWAYS_FATAL_IF(ctxt == EGL_NO_CONTEXT, "EGLContext creation failed");
+
+    // now figure out what version of GL did we actually get
+    // NOTE: a dummy surface is not needed if KHR_create_context is supported
+
+    EGLConfig dummyConfig = config;
+    if (dummyConfig == EGL_NO_CONFIG) {
+        dummyConfig = chooseEglConfig(display, hwcFormat, /*logConfig*/ true);
+    }
+    EGLint attribs[] = {EGL_WIDTH, 1, EGL_HEIGHT, 1, EGL_NONE, EGL_NONE};
+    EGLSurface dummy = eglCreatePbufferSurface(display, dummyConfig, attribs);
+    LOG_ALWAYS_FATAL_IF(dummy == EGL_NO_SURFACE, "can't create dummy pbuffer");
+    EGLBoolean success = eglMakeCurrent(display, dummy, dummy, ctxt);
+    LOG_ALWAYS_FATAL_IF(!success, "can't make dummy pbuffer current");
+
+    extensions.initWithGLStrings(glGetString(GL_VENDOR), glGetString(GL_RENDERER),
+                                 glGetString(GL_VERSION), glGetString(GL_EXTENSIONS));
+
+    GlesVersion version = parseGlesVersion(extensions.getVersion());
+
+    // initialize the renderer while GL is current
+
+    std::unique_ptr<GLES20RenderEngine> engine;
+    switch (version) {
+        case GLES_VERSION_1_0:
+        case GLES_VERSION_1_1:
+            LOG_ALWAYS_FATAL("SurfaceFlinger requires OpenGL ES 2.0 minimum to run.");
+            break;
+        case GLES_VERSION_2_0:
+        case GLES_VERSION_3_0:
+            engine = std::make_unique<GLES20RenderEngine>(featureFlags);
+            break;
+    }
+    engine->setEGLHandles(display, config, ctxt);
+
+    ALOGI("OpenGL ES informations:");
+    ALOGI("vendor    : %s", extensions.getVendor());
+    ALOGI("renderer  : %s", extensions.getRenderer());
+    ALOGI("version   : %s", extensions.getVersion());
+    ALOGI("extensions: %s", extensions.getExtensions());
+    ALOGI("GL_MAX_TEXTURE_SIZE = %zu", engine->getMaxTextureSize());
+    ALOGI("GL_MAX_VIEWPORT_DIMS = %zu", engine->getMaxViewportDims());
+
+    eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+    eglDestroySurface(display, dummy);
+
+    return engine;
+}
+
+EGLConfig GLES20RenderEngine::chooseEglConfig(EGLDisplay display, int format, bool logConfig) {
+    status_t err;
+    EGLConfig config;
+
+    // First try to get an ES2 config
+    err = selectEGLConfig(display, format, EGL_OPENGL_ES2_BIT, &config);
+    if (err != NO_ERROR) {
+        // If ES2 fails, try ES1
+        err = selectEGLConfig(display, format, EGL_OPENGL_ES_BIT, &config);
+        if (err != NO_ERROR) {
+            // still didn't work, probably because we're on the emulator...
+            // try a simplified query
+            ALOGW("no suitable EGLConfig found, trying a simpler query");
+            err = selectEGLConfig(display, format, 0, &config);
+            if (err != NO_ERROR) {
+                // this EGL is too lame for android
+                LOG_ALWAYS_FATAL("no suitable EGLConfig found, giving up");
+            }
+        }
+    }
+
+    if (logConfig) {
+        // print some debugging info
+        EGLint r, g, b, a;
+        eglGetConfigAttrib(display, config, EGL_RED_SIZE, &r);
+        eglGetConfigAttrib(display, config, EGL_GREEN_SIZE, &g);
+        eglGetConfigAttrib(display, config, EGL_BLUE_SIZE, &b);
+        eglGetConfigAttrib(display, config, EGL_ALPHA_SIZE, &a);
+        ALOGI("EGL information:");
+        ALOGI("vendor    : %s", eglQueryString(display, EGL_VENDOR));
+        ALOGI("version   : %s", eglQueryString(display, EGL_VERSION));
+        ALOGI("extensions: %s", eglQueryString(display, EGL_EXTENSIONS));
+        ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS) ?: "Not Supported");
+        ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, config);
+    }
+
+    return config;
+}
+
 GLES20RenderEngine::GLES20RenderEngine(uint32_t featureFlags)
-      : RenderEngine(featureFlags),
+      : renderengine::impl::RenderEngine(featureFlags),
+        mEGLDisplay(EGL_NO_DISPLAY),
+        mEGLConfig(nullptr),
+        mEGLContext(EGL_NO_CONTEXT),
         mVpWidth(0),
         mVpHeight(0),
         mUseColorManagement(featureFlags & USE_COLOR_MANAGEMENT) {
@@ -154,7 +407,10 @@
     }
 }
 
-GLES20RenderEngine::~GLES20RenderEngine() {}
+GLES20RenderEngine::~GLES20RenderEngine() {
+    eglMakeCurrent(mEGLDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+    eglTerminate(mEGLDisplay);
+}
 
 std::unique_ptr<Framebuffer> GLES20RenderEngine::createFramebuffer() {
     return std::make_unique<GLFramebuffer>(*this);
@@ -278,6 +534,11 @@
     return true;
 }
 
+void GLES20RenderEngine::clearWithColor(float red, float green, float blue, float alpha) {
+    glClearColor(red, green, blue, alpha);
+    glClear(GL_COLOR_BUFFER_BIT);
+}
+
 void GLES20RenderEngine::fillRegionWithColor(const Region& region, uint32_t height, float red,
                                              float green, float blue, float alpha) {
     size_t c;
@@ -302,11 +563,6 @@
     drawMesh(mesh);
 }
 
-void GLES20RenderEngine::clearWithColor(float red, float green, float blue, float alpha) {
-    glClearColor(red, green, blue, alpha);
-    glClear(GL_COLOR_BUFFER_BIT);
-}
-
 void GLES20RenderEngine::setScissor(uint32_t left, uint32_t bottom, uint32_t right, uint32_t top) {
     glScissor(left, bottom, right, top);
     glEnable(GL_SCISSOR_TEST);
@@ -632,12 +888,37 @@
 }
 
 void GLES20RenderEngine::dump(String8& result) {
-    RenderEngine::dump(result);
+    const GLExtensions& extensions = GLExtensions::getInstance();
+
+    result.appendFormat("EGL implementation : %s\n", extensions.getEGLVersion());
+    result.appendFormat("%s\n", extensions.getEGLExtensions());
+
+    result.appendFormat("GLES: %s, %s, %s\n", extensions.getVendor(), extensions.getRenderer(),
+                        extensions.getVersion());
+    result.appendFormat("%s\n", extensions.getExtensions());
     result.appendFormat("RenderEngine last dataspace conversion: (%s) to (%s)\n",
                         dataspaceDetails(static_cast<android_dataspace>(mDataSpace)).c_str(),
                         dataspaceDetails(static_cast<android_dataspace>(mOutputDataSpace)).c_str());
 }
 
+GLES20RenderEngine::GlesVersion GLES20RenderEngine::parseGlesVersion(const char* str) {
+    int major, minor;
+    if (sscanf(str, "OpenGL ES-CM %d.%d", &major, &minor) != 2) {
+        if (sscanf(str, "OpenGL ES %d.%d", &major, &minor) != 2) {
+            ALOGW("Unable to parse GL_VERSION string: \"%s\"", str);
+            return GLES_VERSION_1_0;
+        }
+    }
+
+    if (major == 1 && minor == 0) return GLES_VERSION_1_0;
+    if (major == 1 && minor >= 1) return GLES_VERSION_1_1;
+    if (major == 2 && minor >= 0) return GLES_VERSION_2_0;
+    if (major == 3 && minor >= 0) return GLES_VERSION_3_0;
+
+    ALOGW("Unrecognized OpenGL ES version: %d.%d", major, minor);
+    return GLES_VERSION_1_0;
+}
+
 bool GLES20RenderEngine::isHdrDataSpace(const Dataspace dataSpace) const {
     const Dataspace standard = static_cast<Dataspace>(dataSpace & Dataspace::STANDARD_MASK);
     const Dataspace transfer = static_cast<Dataspace>(dataSpace & Dataspace::TRANSFER_MASK);
@@ -665,6 +946,12 @@
     return (isInputHdrDataSpace || isOutputHdrDataSpace) && inputTransfer != outputTransfer;
 }
 
+void GLES20RenderEngine::setEGLHandles(EGLDisplay display, EGLConfig config, EGLContext ctxt) {
+    mEGLDisplay = display;
+    mEGLConfig = config;
+    mEGLContext = ctxt;
+}
+
 }  // namespace gl
 }  // namespace renderengine
 }  // namespace android
diff --git a/services/surfaceflinger/RenderEngine/gl/GLES20RenderEngine.h b/services/surfaceflinger/RenderEngine/gl/GLES20RenderEngine.h
index 04dc1b1..0566e94 100644
--- a/services/surfaceflinger/RenderEngine/gl/GLES20RenderEngine.h
+++ b/services/surfaceflinger/RenderEngine/gl/GLES20RenderEngine.h
@@ -20,10 +20,14 @@
 #include <stdint.h>
 #include <sys/types.h>
 
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
 #include <GLES2/gl2.h>
 #include <renderengine/RenderEngine.h>
 #include <renderengine/private/Description.h>
 
+#define EGL_NO_CONFIG ((EGLConfig)0)
+
 namespace android {
 
 class String8;
@@ -40,6 +44,9 @@
 
 class GLES20RenderEngine : public impl::RenderEngine {
 public:
+    static std::unique_ptr<GLES20RenderEngine> create(int hwcFormat, uint32_t featureFlags);
+    static EGLConfig chooseEglConfig(EGLDisplay display, int format, bool logConfig);
+
     GLES20RenderEngine(uint32_t featureFlags); // See RenderEngine::FeatureFlag
     ~GLES20RenderEngine() override;
 
@@ -67,19 +74,16 @@
     void unbindFrameBuffer(Framebuffer* framebuffer) override;
     void checkErrors() const override;
 
+    // internal to RenderEngine
+    EGLDisplay getEGLDisplay() const { return mEGLDisplay; }
+    EGLConfig getEGLConfig() const { return mEGLConfig; }
+
 protected:
     void dump(String8& result) override;
     void setViewportAndProjection(size_t vpw, size_t vph, Rect sourceCrop,
                                   ui::Transform::orientation_flags rotation) override;
     void setupLayerBlending(bool premultipliedAlpha, bool opaque, bool disableTexture,
                             const half4& color) override;
-
-    // Color management related functions and state
-    void setSourceY410BT2020(bool enable) override;
-    void setSourceDataSpace(ui::Dataspace source) override;
-    void setOutputDataSpace(ui::Dataspace dataspace) override;
-    void setDisplayMaxLuminance(const float maxLuminance) override;
-
     void setupLayerTexturing(const Texture& texture) override;
     void setupLayerBlackedOut() override;
     void setupFillWithColor(float r, float g, float b, float a) override;
@@ -87,17 +91,37 @@
     void disableTexturing() override;
     void disableBlending() override;
 
+    // HDR and color management related functions and state
+    void setSourceY410BT2020(bool enable) override;
+    void setSourceDataSpace(ui::Dataspace source) override;
+    void setOutputDataSpace(ui::Dataspace dataspace) override;
+    void setDisplayMaxLuminance(const float maxLuminance) override;
+
+    // drawing
     void drawMesh(const Mesh& mesh) override;
 
     size_t getMaxTextureSize() const override;
     size_t getMaxViewportDims() const override;
 
 private:
+    enum GlesVersion {
+        GLES_VERSION_1_0 = 0x10000,
+        GLES_VERSION_1_1 = 0x10001,
+        GLES_VERSION_2_0 = 0x20000,
+        GLES_VERSION_3_0 = 0x30000,
+    };
+
+    static GlesVersion parseGlesVersion(const char* str);
+
     // A data space is considered HDR data space if it has BT2020 color space
     // with PQ or HLG transfer function.
     bool isHdrDataSpace(const ui::Dataspace dataSpace) const;
     bool needsXYZTransformMatrix() const;
+    void setEGLHandles(EGLDisplay display, EGLConfig config, EGLContext ctxt);
 
+    EGLDisplay mEGLDisplay;
+    EGLConfig mEGLConfig;
+    EGLContext mEGLContext;
     GLuint mProtectedTexName;
     GLint mMaxViewportDims[2];
     GLint mMaxTextureSize;
diff --git a/services/surfaceflinger/RenderEngine/include/renderengine/RenderEngine.h b/services/surfaceflinger/RenderEngine/include/renderengine/RenderEngine.h
index 2e2ba1c..eb0ad65 100644
--- a/services/surfaceflinger/RenderEngine/include/renderengine/RenderEngine.h
+++ b/services/surfaceflinger/RenderEngine/include/renderengine/RenderEngine.h
@@ -59,6 +59,8 @@
         USE_HIGH_PRIORITY_CONTEXT = 1 << 1, // Use high priority context
     };
 
+    static std::unique_ptr<impl::RenderEngine> create(int hwcFormat, uint32_t featureFlags);
+
     virtual ~RenderEngine() = 0;
 
     virtual std::unique_ptr<Framebuffer> createFramebuffer() = 0;
@@ -155,43 +157,18 @@
 
 namespace impl {
 
+// impl::RenderEngine contains common implementation that is graphics back-end agnostic.
 class RenderEngine : public renderengine::RenderEngine {
-protected:
-    enum GlesVersion {
-        GLES_VERSION_1_0 = 0x10000,
-        GLES_VERSION_1_1 = 0x10001,
-        GLES_VERSION_2_0 = 0x20000,
-        GLES_VERSION_3_0 = 0x30000,
-    };
-    static GlesVersion parseGlesVersion(const char* str);
-
-    EGLDisplay mEGLDisplay;
-    EGLConfig mEGLConfig;
-    EGLContext mEGLContext;
-    void setEGLHandles(EGLDisplay display, EGLConfig config, EGLContext ctxt);
-
-    RenderEngine(uint32_t featureFlags);
-
-    const uint32_t mFeatureFlags;
-
 public:
     virtual ~RenderEngine() = 0;
 
-    static std::unique_ptr<RenderEngine> create(int hwcFormat, uint32_t featureFlags);
-
-    static EGLConfig chooseEglConfig(EGLDisplay display, int format, bool logConfig);
-
-    // dump the extension strings. always call the base class.
-    void dump(String8& result) override;
-
     bool useNativeFenceSync() const override;
     bool useWaitSync() const override;
-
     void setupColorTransform(const mat4& /* colorTransform */) override {}
 
-    // internal to RenderEngine
-    EGLDisplay getEGLDisplay() const;
-    EGLConfig getEGLConfig() const;
+protected:
+    RenderEngine(uint32_t featureFlags);
+    const uint32_t mFeatureFlags;
 };
 
 }  // namespace impl
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index a5bd73a..55ef909 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -667,8 +667,8 @@
 
     // TODO(b/77156734): We need to stop casting and use HAL types when possible.
     getBE().mRenderEngine =
-        renderengine::impl::RenderEngine::create(static_cast<int32_t>(compositionPixelFormat),
-                                                 renderEngineFeature);
+        renderengine::RenderEngine::create(static_cast<int32_t>(compositionPixelFormat),
+                                           renderEngineFeature);
     LOG_ALWAYS_FATAL_IF(getBE().mRenderEngine == nullptr, "couldn't create RenderEngine");
 
     LOG_ALWAYS_FATAL_IF(mVrFlingerRequestsDisplay,