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// Copyright 2022 DeepMind Technologies Limited
//
// 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 "glfw_dispatch.h"
#ifdef mjGLFW_DYNAMIC_SYMBOLS
#ifdef _MSC_VER
#include <windows.h>
#include <libloaderapi.h>
#else
#include <dlfcn.h>
#endif
#endif
#include <cstdlib>
#include <iostream>
namespace mujoco {
// return dispatch table for glfw functions
const struct Glfw& Glfw(void* dlhandle) {
{
// set static init_dlhandle
static const void* init_dlhandle = dlhandle;
// check that not already initialized
if (dlhandle && dlhandle != init_dlhandle) {
std::cerr << "dlhandle is specified when GLFW dispatch table is already "
"initialized\n";
abort();
}
}
// make and intialize dispatch table
static const struct Glfw glfw = [&]() { // create and call constructor
// allocate
struct Glfw glfw;
// load glfw dynamically
#ifdef mjGLFW_DYNAMIC_SYMBOLS
#ifdef _MSC_VER
if (!dlhandle) dlhandle = LoadLibraryA("glfw3.dll");
if (!dlhandle) {
std::cerr << "cannot obtain a shared object handle\n";
abort();
}
#define mjGLFW_RESOLVE_SYMBOL(func) \
glfw.func = reinterpret_cast<decltype(glfw.func)>( \
GetProcAddress(reinterpret_cast<HMODULE>(dlhandle), #func))
#else
if (!dlhandle) dlhandle = dlopen("nullptr", RTLD_GLOBAL | RTLD_NOW);
if (!dlhandle) {
std::cerr << "cannot obtain a shared object handle\n";
abort();
}
#define mjGLFW_RESOLVE_SYMBOL(func) \
glfw.func = reinterpret_cast<decltype(glfw.func)>(dlsym(dlhandle, #func))
#endif
#else
#define mjGLFW_RESOLVE_SYMBOL(func) glfw.func = &::func
#endif
// set pointers in dispatch table
#define mjGLFW_INITIALIZE_SYMBOL(func) \
if (!(mjGLFW_RESOLVE_SYMBOL(func))) { \
std::cerr << "cannot dlsym " #func "\n"; \
abort(); \
}
// go/keep-sorted start
mjGLFW_INITIALIZE_SYMBOL(glfwCreateWindow);
mjGLFW_INITIALIZE_SYMBOL(glfwGetCursorPos);
mjGLFW_INITIALIZE_SYMBOL(glfwGetFramebufferSize);
mjGLFW_INITIALIZE_SYMBOL(glfwGetKey);
mjGLFW_INITIALIZE_SYMBOL(glfwGetMonitorPhysicalSize);
mjGLFW_INITIALIZE_SYMBOL(glfwGetMouseButton);
mjGLFW_INITIALIZE_SYMBOL(glfwGetPrimaryMonitor);
mjGLFW_INITIALIZE_SYMBOL(glfwGetTime);
mjGLFW_INITIALIZE_SYMBOL(glfwGetVideoMode);
mjGLFW_INITIALIZE_SYMBOL(glfwGetWindowMonitor);
mjGLFW_INITIALIZE_SYMBOL(glfwGetWindowPos);
mjGLFW_INITIALIZE_SYMBOL(glfwGetWindowSize);
mjGLFW_INITIALIZE_SYMBOL(glfwGetWindowUserPointer);
mjGLFW_INITIALIZE_SYMBOL(glfwInit);
mjGLFW_INITIALIZE_SYMBOL(glfwMakeContextCurrent);
mjGLFW_INITIALIZE_SYMBOL(glfwPollEvents);
mjGLFW_INITIALIZE_SYMBOL(glfwSetClipboardString);
mjGLFW_INITIALIZE_SYMBOL(glfwSetCursorPosCallback);
mjGLFW_INITIALIZE_SYMBOL(glfwSetDropCallback);
mjGLFW_INITIALIZE_SYMBOL(glfwSetKeyCallback);
mjGLFW_INITIALIZE_SYMBOL(glfwSetMouseButtonCallback);
mjGLFW_INITIALIZE_SYMBOL(glfwSetScrollCallback);
mjGLFW_INITIALIZE_SYMBOL(glfwSetWindowMonitor);
mjGLFW_INITIALIZE_SYMBOL(glfwSetWindowRefreshCallback);
mjGLFW_INITIALIZE_SYMBOL(glfwSetWindowSizeCallback);
mjGLFW_INITIALIZE_SYMBOL(glfwSetWindowTitle);
mjGLFW_INITIALIZE_SYMBOL(glfwSetWindowUserPointer);
mjGLFW_INITIALIZE_SYMBOL(glfwSwapBuffers);
mjGLFW_INITIALIZE_SYMBOL(glfwSwapInterval);
mjGLFW_INITIALIZE_SYMBOL(glfwTerminate);
mjGLFW_INITIALIZE_SYMBOL(glfwWindowHint);
mjGLFW_INITIALIZE_SYMBOL(glfwWindowShouldClose);
// go/keep-sorted end
#undef mjGLFW_INITIALIZE_SYMBOL
#if defined(mjGLFW_DYNAMIC_SYMBOLS) && !defined(_MSC_VER)
dlclose(dlhandle);
#endif
return glfw;
}();
return glfw;
}
} // namespace mujoco
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