apple: Initial import of libGL for OSX from AppleSGLX svn repository.

Signed-off-by: Jeremy Huddleston <jeremyhu@apple.com>

1 files changed, 214 insertions, 0 deletions

diff --git a/src/glx/apple/apple_glx.c b/src/glx/apple/apple_glx.c
new file mode 100644
index 0000000000..d9bc091715
--- /dev/null
+++ b/src/glx/apple/apple_glx.c
@@ -0,0 +1,214 @@
+/*
+ Copyright (c) 2008, 2009 Apple Inc.
+ 
+ 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, sublicense, 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 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
+ NONINFRINGEMENT.  IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT
+ HOLDER(S) 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.
+ 
+ Except as contained in this notice, the name(s) of the above
+ copyright holders shall not be used in advertising or otherwise to
+ promote the sale, use or other dealings in this Software without
+ prior written authorization.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <stdarg.h>
+#include <dlfcn.h>
+#include "appledri.h"
+#include "apple_glx.h"
+#include "apple_glx_context.h"
+#include "apple_cgl.h"
+#include "apple_xgl_api.h"
+
+static bool initialized = false;
+static int dri_event_base = 0;
+
+const GLuint __glXDefaultPixelStore[9] = { 0, 0, 0, 0, 0, 0, 0, 0, 1 };
+
+#ifndef OPENGL_LIB_PATH
+#define OPENGL_LIB_PATH "/System/Library/Frameworks/OpenGL.framework/Libraries/libGL.dylib"
+#endif
+
+static void *libgl_handle = NULL;
+
+static bool diagnostic = false;
+
+void
+apple_glx_diagnostic(const char *fmt, ...)
+{
+   va_list vl;
+
+   if (diagnostic) {
+      fprintf(stderr, "DIAG: ");
+
+      va_start(vl, fmt);
+      vfprintf(stderr, fmt, vl);
+      va_end(vl);
+   }
+}
+
+int
+apple_get_dri_event_base(void)
+{
+   if (!initialized) {
+      fprintf(stderr,
+              "error: dri_event_base called before apple_init_glx!\n");
+      abort();
+   }
+   return dri_event_base;
+}
+
+static void
+surface_notify_handler(Display * dpy, unsigned int uid, int kind)
+{
+
+   switch (kind) {
+   case AppleDRISurfaceNotifyDestroyed:
+      apple_glx_diagnostic("%s: surface destroyed %u\n", __func__, uid);
+      apple_glx_surface_destroy(uid);
+      break;
+
+   case AppleDRISurfaceNotifyChanged:{
+         int updated;
+
+         updated = apple_glx_context_surface_changed(uid, pthread_self());
+
+         apple_glx_diagnostic("surface notify updated %d\n", updated);
+      }
+      break;
+
+   default:
+      fprintf(stderr, "unhandled kind of event: %d in %s\n", kind, __func__);
+   }
+}
+
+xp_client_id
+apple_glx_get_client_id(void)
+{
+   static xp_client_id id;
+
+   if (0 == id) {
+      if ((XP_Success != xp_init(XP_IN_BACKGROUND)) ||
+          (Success != xp_get_client_id(&id))) {
+         return 0;
+      }
+   }
+
+   return id;
+}
+
+/* Return true if an error occured. */
+bool
+apple_init_glx(Display * dpy)
+{
+   int eventBase, errorBase;
+   int major, minor, patch;
+
+   if (!XAppleDRIQueryExtension(dpy, &eventBase, &errorBase))
+      return true;
+
+   if (!XAppleDRIQueryVersion(dpy, &major, &minor, &patch))
+      return true;
+
+   if (initialized)
+      return false;
+
+   if (getenv("LIBGL_DIAGNOSTIC")) {
+      printf("initializing libGL in %s\n", __func__);
+      diagnostic = true;
+   }
+
+   apple_cgl_init();
+   apple_xgl_init_direct();
+   libgl_handle = dlopen(OPENGL_LIB_PATH, RTLD_LAZY);
+   (void) apple_glx_get_client_id();
+
+   XAppleDRISetSurfaceNotifyHandler(surface_notify_handler);
+
+   /* This should really be per display. */
+   dri_event_base = eventBase;
+   initialized = true;
+
+   return false;
+}
+
+void
+apple_glx_swap_buffers(void *ptr)
+{
+   struct apple_glx_context *ac = ptr;
+
+   /* This may not be needed with CGLFlushDrawable: */
+   glFlush();
+   apple_cgl.flush_drawable(ac->context_obj);
+}
+
+void *
+apple_glx_get_proc_address(const GLubyte * procname)
+{
+   size_t len;
+   void *h, *s;
+   char *pname = (char *) procname;
+
+   assert(NULL != procname);
+   len = strlen(pname);
+
+   if (len < 3) {
+      return NULL;
+   }
+
+   if ((pname != strstr(pname, "glX")) && (pname != strstr(pname, "gl"))) {
+      fprintf(stderr,
+              "warning: get proc address request is not for a gl or glX function");
+      return NULL;
+   }
+
+   /* Search using the default symbols first. */
+   (void) dlerror();            /*drain dlerror */
+   h = dlopen(NULL, RTLD_NOW);
+   if (NULL == h) {
+      fprintf(stderr, "warning: get proc address: %s\n", dlerror());
+      return NULL;
+   }
+
+   s = dlsym(h, pname);
+
+   if (NULL == s) {
+      /* Try the libGL.dylib from the OpenGL.framework. */
+      s = dlsym(libgl_handle, pname);
+   }
+
+   dlclose(h);
+
+   return s;
+}
+
+void
+apple_glx_waitx(Display * dpy, void *ptr)
+{
+   struct apple_private_context *ac = ptr;
+
+   (void) ac;
+
+   glFlush();
+   glFinish();
+   XSync(dpy, False);
+}