implement a real loader for EGL drivers
we now look for a config file in /system/lib/egl/egl.cfg that describes the association of a display to a driver.
these drivers are named: /system/lib/egl/lib{[EGL|GLESv1_CM|GLESv2] | GLES}_$TAG.so
diff --git a/opengl/libs/EGL/Loader.h b/opengl/libs/EGL/Loader.h
new file mode 100644
index 0000000..69f6dd5
--- /dev/null
+++ b/opengl/libs/EGL/Loader.h
@@ -0,0 +1,90 @@
+/*
+ ** Copyright 2009, 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_LOADER_H
+#define ANDROID_EGL_LOADER_H
+
+#include <ctype.h>
+#include <string.h>
+#include <errno.h>
+
+#include <utils/Errors.h>
+#include <utils/Singleton.h>
+#include <utils/String8.h>
+#include <utils/Vector.h>
+
+#include <EGL/egl.h>
+
+// ----------------------------------------------------------------------------
+namespace android {
+// ----------------------------------------------------------------------------
+
+struct gl_hooks_t;
+
+class Loader : public Singleton<Loader>
+{
+ friend class Singleton<Loader>;
+
+ typedef __eglMustCastToProperFunctionPointerType (*getProcAddressType)(
+ const char*);
+
+ enum {
+ EGL = 0x01,
+ GLESv1_CM = 0x02,
+ GLESv2 = 0x04
+ };
+ struct driver_t {
+ driver_t(void* gles);
+ ~driver_t();
+ status_t set(void* hnd, int32_t api);
+ void* dso[3];
+ };
+
+ struct entry_t {
+ entry_t() { }
+ entry_t(int dpy, int impl, const char* tag);
+ int dpy;
+ int impl;
+ String8 tag;
+ };
+
+ Vector<entry_t> gConfig;
+ getProcAddressType getProcAddress;
+
+ const char* getTag(int dpy, int impl);
+
+public:
+ ~Loader();
+
+ void* open(EGLNativeDisplayType display, int impl, gl_hooks_t* hooks);
+ status_t close(void* driver);
+
+private:
+ Loader();
+ void *load_driver(const char* driver, gl_hooks_t* hooks, uint32_t mask);
+
+ static __attribute__((noinline))
+ void init_api(void* dso,
+ char const * const * api,
+ __eglMustCastToProperFunctionPointerType* curr,
+ getProcAddressType getProcAddress);
+};
+
+// ----------------------------------------------------------------------------
+}; // namespace android
+// ----------------------------------------------------------------------------
+
+#endif /* ANDROID_EGL_LOADER_H */