Initial work

external/android-emugl/host/libs/libOpenGLESDispatch/EGLDispatch.cpp

@@ -0,0 +1,52 @@
+/*
+* Copyright (C) 2011 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 "OpenGLESDispatch/EGLDispatch.h"
+
+#include "emugl/common/shared_library.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+EGLDispatch s_egl;
+
+#define DEFAULT_EGL_LIB EMUGL_LIBNAME("EGL_translator")
+
+#define RENDER_EGL_LOAD_FIELD(return_type, function_name, signature) \
+    s_egl. function_name = (function_name ## _t) lib->findSymbol(#function_name);
+
+#define RENDER_EGL_LOAD_OPTIONAL_FIELD(return_type, function_name, signature) \
+    if (s_egl.eglGetProcAddress) s_egl. function_name = \
+            (function_name ## _t) s_egl.eglGetProcAddress(#function_name); \
+    if (!s_egl.function_name || !s_egl.eglGetProcAddress) \
+            RENDER_EGL_LOAD_FIELD(return_type, function_name, signature)
+
+bool init_egl_dispatch()
+{
+
+    const char *libName = getenv("ANDROID_EGL_LIB");
+    if (!libName) libName = DEFAULT_EGL_LIB;
+
+    char error[256];
+    emugl::SharedLibrary *lib = emugl::SharedLibrary::open(libName, error, sizeof(error));
+    if (!lib) {
+        printf("Failed to open %s: [%s]\n", libName, error);
+        return NULL;
+    }
+    LIST_RENDER_EGL_FUNCTIONS(RENDER_EGL_LOAD_FIELD)
+    LIST_RENDER_EGL_EXTENSIONS_FUNCTIONS(RENDER_EGL_LOAD_OPTIONAL_FIELD)
+
+    return true;
+}