1 files changed, 265 insertions, 0 deletions
diff --git a/nx-X11/lib/GL/apple/dri_glx.c b/nx-X11/lib/GL/apple/dri_glx.c
new file mode 100644
index 000000000..c2adc868f
--- /dev/null
+++ b/nx-X11/lib/GL/apple/dri_glx.c
@@ -0,0 +1,265 @@
+/**************************************************************************
+
+Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
+Copyright (c) 2002 Apple Computer, Inc.
+Copyright (c) 2004 Torrey T. Lyons
+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 PRECISION INSIGHT 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.
+
+**************************************************************************/
+/* $XFree86: xc/lib/GL/apple/dri_glx.c,v 1.2 2004/04/21 04:59:40 torrey Exp $ */
+
+/*
+ * Authors:
+ *   Kevin E. Martin <kevin@precisioninsight.com>
+ *   Brian Paul <brian@precisioninsight.com>
+ *
+ */
+
+#ifdef GLX_DIRECT_RENDERING
+
+#include <unistd.h>
+#include <X11/Xlibint.h>
+#include <X11/extensions/Xext.h>
+#include "extutil.h"
+#include "glxclient.h"
+#include "appledri.h"
+#include <stdio.h>
+#include "dri_glx.h"
+#include <sys/types.h>
+#include <stdarg.h>
+
+
+/* Apple OpenGL "driver" information. */
+static const char *__driAppleDriverName = "apple";
+static const int __driAppleDriverMajor = 1;
+static const int __driAppleDriverMinor = 0;
+static const int __driAppleDriverPatch = 0;
+
+
+/*
+ * printf wrappers
+ */
+
+static void InfoMessageF(const char *f, ...)
+{
+    va_list args;
+    const char *env;
+
+    if ((env = getenv("LIBGL_DEBUG")) && strstr(env, "verbose")) {
+        fprintf(stderr, "libGL: ");
+        va_start(args, f);
+        vfprintf(stderr, f, args);
+        va_end(args);
+    }
+}
+
+static void ErrorMessageF(const char *f, ...)
+{
+    va_list args;
+
+    if (getenv("LIBGL_DEBUG")) {
+        fprintf(stderr, "libGL error: ");
+        va_start(args, f);
+        vfprintf(stderr, f, args);
+        va_end(args);
+    }
+}
+
+
+/*
+ * Given a display pointer and screen number, determine the name of
+ * the DRI driver for the screen. (I.e. "r128", "tdfx", etc).
+ * Return True for success, False for failure.
+ */
+static Bool GetDriverName(Display *dpy, int scrNum, char **driverName)
+{
+    int directCapable;
+
+    *driverName = NULL;
+
+    if (!XAppleDRIQueryDirectRenderingCapable(dpy, scrNum, &directCapable)) {
+        ErrorMessageF("XAppleDRIQueryDirectRenderingCapable failed\n");
+        return False;
+    }
+    if (!directCapable) {
+        ErrorMessageF("XAppleDRIQueryDirectRenderingCapable returned false\n");
+        return False;
+    }
+
+    *driverName = (char *) __driAppleDriverName;
+
+    InfoMessageF("XF86DRIGetClientDriverName: %d.%d.%d %s (screen %d)\n",
+                 __driAppleDriverMajor, __driAppleDriverMinor,
+                 __driAppleDriverPatch, *driverName, scrNum);
+
+    return True;
+}
+
+
+/*
+ * Exported function for querying the DRI driver for a given screen.
+ *
+ * The returned char pointer points to a static array that will be
+ * overwritten by subsequent calls.
+ */
+const char *glXGetScreenDriver (Display *dpy, int scrNum) {
+    static char ret[32];
+    char *driverName;
+    if (GetDriverName(dpy, scrNum, &driverName)) {
+        int len;
+        if (!driverName)
+            return NULL;
+        len = strlen (driverName);
+        if (len >= 31)
+            return NULL;
+        memcpy (ret, driverName, len+1);
+        Xfree(driverName);
+        return ret;
+    }
+    return NULL;
+}
+
+
+/*
+ * Exported function for obtaining a driver's option list (UTF-8 encoded XML).
+ *
+ * The returned char pointer points directly into the driver. Therefore
+ * it should be treated as a constant.
+ *
+ * If the driver was not found or does not support configuration NULL is
+ * returned.
+ *
+ * Note: In a standard GLX imlementation the driver remains opened after
+ * this function returns.
+ */
+const char *glXGetDriverConfig(const char *driverName) {
+    /* the apple stub driver does not support configuration */
+    return NULL;
+}
+
+
+static void driDestroyDisplay(Display *dpy, void *private)
+{
+    __DRIdisplayPrivate *pdpyp = (__DRIdisplayPrivate *)private;
+
+    if (pdpyp) {
+        Xfree(pdpyp->libraryHandles);
+        Xfree(pdpyp);
+    }
+}
+
+
+void *driCreateDisplay(Display *dpy, __DRIdisplay *pdisp)
+{
+    const int numScreens = ScreenCount(dpy);
+    __DRIdisplayPrivate *pdpyp;
+    int eventBase, errorBase;
+    int major, minor, patch;
+    int scrn;
+
+    /* Initialize these fields to NULL in case we fail.
+     * If we don't do this we may later get segfaults trying to free random
+     * addresses when the display is closed.
+     */
+    pdisp->private = NULL;
+    pdisp->destroyDisplay = NULL;
+    pdisp->createScreen = NULL;
+
+    if (!XAppleDRIQueryExtension(dpy, &eventBase, &errorBase)) {
+        return NULL;
+    }
+
+    if (!XAppleDRIQueryVersion(dpy, &major, &minor, &patch)) {
+        return NULL;
+    }
+
+    pdpyp = (__DRIdisplayPrivate *)Xmalloc(sizeof(__DRIdisplayPrivate));
+    if (!pdpyp) {
+        return NULL;
+    }
+
+    pdpyp->driMajor = major;
+    pdpyp->driMinor = minor;
+    pdpyp->driPatch = patch;
+
+    pdisp->destroyDisplay = driDestroyDisplay;
+
+    /* allocate array of pointers to createScreen funcs */
+    pdisp->createScreen = (CreateScreenFunc *) Xmalloc(numScreens * sizeof(void *));
+    if (!pdisp->createScreen)
+        return NULL;
+
+    /* allocate array of pointers to createScreen funcs */
+    pdisp->createNewScreen = (CreateNewScreenFunc *) Xmalloc(numScreens * sizeof(void *));
+    if (!pdisp->createNewScreen) {
+        Xfree(pdisp->createScreen);
+        Xfree(pdpyp);
+        return NULL;
+    }
+
+    /* allocate array of library handles */
+    pdpyp->libraryHandles = (void **) Xmalloc(numScreens * sizeof(void*));
+    if (!pdpyp->libraryHandles) {
+        Xfree(pdisp->createNewScreen);
+        Xfree(pdisp->createScreen);
+        Xfree(pdpyp);
+        return NULL;
+    }
+
+    /* we'll statically bind to the __driCreateScreen function */
+    for (scrn = 0; scrn < numScreens; scrn++) {
+        pdisp->createScreen[scrn] = __driCreateScreen;
+        pdisp->createNewScreen[scrn] = NULL;
+        pdpyp->libraryHandles[scrn] = NULL;
+    }
+
+    return (void *)pdpyp;
+}
+
+
+/*
+** Here we'll query the DRI driver for each screen and let each
+** driver register its GL extension functions.  We only have to
+** do this once.  But it MUST be done before we create any contexts
+** (i.e. before any dispatch tables are created) and before
+** glXGetProcAddressARB() returns.
+**
+** Currently called by glXGetProcAddress(), __glXInitialize(), and
+** __glXNewIndirectAPI().
+*/
+void
+__glXRegisterExtensions(void)
+{
+   static GLboolean alreadyCalled = GL_FALSE;
+
+   if (alreadyCalled) {
+      return;
+   }
+
+   __driRegisterExtensions ();
+
+   alreadyCalled = GL_TRUE;
+}
+
+
+#endif /* GLX_DIRECT_RENDERING */