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/**************************************************************************
*
* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/**
* X-specific EGL code.
*
* Any glue code needed to make EGL work with X is placed in this file.
*/
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <X11/Xlib.h>
#include "egldriver.h"
#include "egllog.h"
#include "eglstring.h"
#include "eglx.h"
static const char *DefaultDRIDriver = "egl_xdri";
static const char *DefaultSoftDriver = "egl_softpipe";
/**
* Given an X Display ptr (at dpy->Xdpy) try to determine the appropriate
* device driver. Return its name.
*
* This boils down to whether to use the egl_xdri.so driver which will
* load a DRI driver or the egl_softpipe.so driver that'll do software
* rendering on Xlib.
*/
const char *
_xeglChooseDriver(_EGLDisplay *dpy)
{
#ifdef _EGL_PLATFORM_X
_XPrivDisplay xdpy;
int screen;
const char *driverName;
assert(dpy);
if (!dpy->Xdpy) {
dpy->Xdpy = XOpenDisplay(NULL);
if (!dpy->Xdpy) {
/* can't open X display -> can't use X-based driver */
return NULL;
}
}
xdpy = (_XPrivDisplay) dpy->Xdpy;
assert(dpy->Xdpy);
screen = DefaultScreen(dpy->Xdpy);
/* See if we can choose a DRI/DRM driver */
driverName = _eglChooseDRMDriver(screen);
if (driverName) {
/* DRI is available */
free((void *) driverName);
driverName = _eglstrdup(DefaultDRIDriver);
}
else {
driverName = _eglstrdup(DefaultSoftDriver);
}
_eglLog(_EGL_DEBUG, "_xeglChooseDriver: %s", driverName);
return driverName;
#else
return NULL;
#endif
}
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