/*
* 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.
*/
#include <OpenGLESDispatch/EGLDispatch.h>
#include <dlfcn.h>
#include <stdio.h>
EGLDispatch s_egl;
#define DEFAULT_EGL_LIB "libEGL_swiftshader.so"
#define EGL_LOAD_FIELD(return_type, function_name, signature, callargs) \
s_egl.function_name = (function_name##_t)dlsym(handle, #function_name);
#define EGL_LOAD_FIELD_WITH_EGL(return_type, function_name, signature, callargs) \
if ((!s_egl.function_name) && s_egl.eglGetProcAddress) \
s_egl.function_name = (function_name##_t)s_egl.eglGetProcAddress(#function_name);
#define EGL_LOAD_OPTIONAL_FIELD(return_type, function_name, signature, callargs) \
if (s_egl.eglGetProcAddress) \
s_egl.function_name = (function_name##_t)s_egl.eglGetProcAddress(#function_name); \
if (!s_egl.function_name || !s_egl.eglGetProcAddress) \
EGL_LOAD_FIELD(return_type, function_name, signature, callargs)
bool egl_dispatch_init() {
void* handle = dlopen(DEFAULT_EGL_LIB, RTLD_NOW);
if (!handle) {
printf("Failed to open %s\n", dlerror());
return false;
}
LIST_EGL_FUNCTIONS(EGL_LOAD_FIELD)
LIST_EGL_FUNCTIONS(EGL_LOAD_FIELD_WITH_EGL)
LIST_EGL_EXTENSIONS_FUNCTIONS(EGL_LOAD_OPTIONAL_FIELD)
return true;
}