1 files changed, 101 insertions, 0 deletions
diff --git a/src/egl/main/eglx.c b/src/egl/main/eglx.c
new file mode 100644
index 0000000000..1bba149f70
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+++ b/src/egl/main/eglx.c
@@ -0,0 +1,101 @@
+/**************************************************************************
+ * 
+ * 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
+}
+
+