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// Copyright 2016 The SwiftShader Authors. All Rights Reserved.
//
// 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 "libX11.hpp"
#include "Common/SharedLibrary.hpp"
LibX11exports::LibX11exports(void *libX11, void *libXext)
{
XOpenDisplay = (Display *(*)(char*))getProcAddress(libX11, "XOpenDisplay");
XGetWindowAttributes = (Status (*)(Display*, Window, XWindowAttributes*))getProcAddress(libX11, "XGetWindowAttributes");
XDefaultScreenOfDisplay = (Screen *(*)(Display*))getProcAddress(libX11, "XDefaultScreenOfDisplay");
XWidthOfScreen = (int (*)(Screen*))getProcAddress(libX11, "XWidthOfScreen");
XHeightOfScreen = (int (*)(Screen*))getProcAddress(libX11, "XHeightOfScreen");
XPlanesOfScreen = (int (*)(Screen*))getProcAddress(libX11, "XPlanesOfScreen");
XDefaultGC = (GC (*)(Display*, int))getProcAddress(libX11, "XDefaultGC");
XDefaultDepth = (int (*)(Display*, int))getProcAddress(libX11, "XDefaultDepth");
XMatchVisualInfo = (Status (*)(Display*, int, int, int, XVisualInfo*))getProcAddress(libX11, "XMatchVisualInfo");
XDefaultVisual = (Visual *(*)(Display*, int screen_number))getProcAddress(libX11, "XDefaultVisual");
XSetErrorHandler = (int (*(*)(int (*)(Display*, XErrorEvent*)))(Display*, XErrorEvent*))getProcAddress(libX11, "XSetErrorHandler");
XSync = (int (*)(Display*, Bool))getProcAddress(libX11, "XSync");
XCreateImage = (XImage *(*)(Display*, Visual*, unsigned int, int, int, char*, unsigned int, unsigned int, int, int))getProcAddress(libX11, "XCreateImage");
XCloseDisplay = (int (*)(Display*))getProcAddress(libX11, "XCloseDisplay");
XPutImage = (int (*)(Display*, Drawable, GC, XImage*, int, int, int, int, unsigned int, unsigned int))getProcAddress(libX11, "XPutImage");
XDrawString = (int (*)(Display*, Drawable, GC, int, int, char*, int))getProcAddress(libX11, "XDrawString");
XShmQueryExtension = (Bool (*)(Display*))getProcAddress(libXext, "XShmQueryExtension");
XShmCreateImage = (XImage *(*)(Display*, Visual*, unsigned int, int, char*, XShmSegmentInfo*, unsigned int, unsigned int))getProcAddress(libXext, "XShmCreateImage");
XShmAttach = (Bool (*)(Display*, XShmSegmentInfo*))getProcAddress(libXext, "XShmAttach");
XShmDetach = (Bool (*)(Display*, XShmSegmentInfo*))getProcAddress(libXext, "XShmDetach");
XShmPutImage = (int (*)(Display*, Drawable, GC, XImage*, int, int, int, int, unsigned int, unsigned int, bool))getProcAddress(libXext, "XShmPutImage");
}
LibX11exports *LibX11::operator->()
{
return loadExports();
}
LibX11exports *LibX11::loadExports()
{
static void *libX11 = nullptr;
static void *libXext = nullptr;
static LibX11exports *libX11exports = nullptr;
if(!libX11)
{
if(getProcAddress(RTLD_DEFAULT, "XOpenDisplay")) // Search the global scope for pre-loaded X11 library.
{
libX11exports = new LibX11exports(RTLD_DEFAULT, RTLD_DEFAULT);
libX11 = (void*)-1; // No need to load it.
}
else
{
libX11 = loadLibrary("libX11.so");
if(libX11)
{
libXext = loadLibrary("libXext.so");
libX11exports = new LibX11exports(libX11, libXext);
}
else
{
libX11 = (void*)-1; // Don't attempt loading more than once.
}
}
}
return libX11exports;
}
LibX11 libX11;