egl_xdri: Revive the driver.

egl_xdri does not compile for some time.  This commit revives the
driver.  It no longer depends on libGL.so for GLX related functions.
Instead, it uses code from src/glx/ directly.  Both DRI and DRI2 are
supported.

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>

1 files changed, 67 insertions, 0 deletions

diff --git a/src/egl/drivers/xdri/driinit.c b/src/egl/drivers/xdri/driinit.c
new file mode 100644
index 0000000000..12da1bcd24
--- /dev/null
+++ b/src/egl/drivers/xdri/driinit.c
@@ -0,0 +1,67 @@
+/**
+ * DRI initialization.  The DRI loaders are defined in src/glx/x11/.
+ */
+
+#include <sys/time.h>
+
+#include "glxclient.h"
+#include "driinit.h"
+
+/* for __DRI_SYSTEM_TIME extension */
+_X_HIDDEN int
+__glXGetUST(int64_t * ust)
+{
+   struct timeval tv;
+
+   if (ust == NULL) {
+      return -EFAULT;
+   }
+
+   if (gettimeofday(&tv, NULL) == 0) {
+      ust[0] = (tv.tv_sec * 1000000) + tv.tv_usec;
+      return 0;
+   }
+   else {
+      return -errno;
+   }
+}
+
+_X_HIDDEN GLboolean
+__driGetMscRateOML(__DRIdrawable * draw,
+                   int32_t * numerator, int32_t * denominator, void *private)
+{
+   return GL_FALSE;
+}
+
+/* ignore glx extensions */
+_X_HIDDEN void
+__glXEnableDirectExtension(__GLXscreenConfigs * psc, const char *name)
+{
+}
+
+_X_HIDDEN __GLXDRIdisplay *
+__driCreateDisplay(__GLXdisplayPrivate *dpyPriv, int *version)
+{
+   __GLXDRIdisplay *driDisplay;
+   int ver = 0;
+
+   /* try DRI2 first */
+   driDisplay = dri2CreateDisplay(dpyPriv->dpy);
+   if (driDisplay) {
+      /* fill in the required field */
+      dpyPriv->dri2Display = driDisplay;
+      ver = 2;
+   }
+   else {
+      /* try DRI */
+      driDisplay = driCreateDisplay(dpyPriv->dpy);
+      if (driDisplay) {
+         dpyPriv->driDisplay = driDisplay;
+         ver = 1;
+      }
+   }
+
+   if (version)
+      *version = ver;
+   return driDisplay;
+}