X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=retrace%2Fglws_cocoa.mm;h=e410862f1996aa278d64db22c2ec3ba4eac81694;hb=2b46364c974c95b8e2568f1e3f13e888c46c9d04;hp=8ec58b13903c8b9762eda4278e8a627e193260fc;hpb=cfd878f0acabbb34a428b151d63b73769464fabc;p=apitrace

diff --git a/retrace/glws_cocoa.mm b/retrace/glws_cocoa.mm
index 8ec58b1..e410862 100644
--- a/retrace/glws_cocoa.mm
+++ b/retrace/glws_cocoa.mm
@@ -33,6 +33,8 @@
  * - http://developer.apple.com/library/mac/#samplecode/glut/Introduction/Intro.html
  * - http://developer.apple.com/library/mac/#samplecode/GLEssentials/Introduction/Intro.html
  * - http://www.glfw.org/
+ * - http://cocoasamurai.blogspot.co.uk/2008/04/guide-to-threading-on-leopard.html
+ * - http://developer.apple.com/library/ios/#documentation/Cocoa/Conceptual/Multithreading/Introduction/Introduction.html
  */
 
 
@@ -48,6 +50,27 @@
 #include "glws.hpp"
 
 
+/**
+ * Dummy thread to force Cocoa to enter multithreading mode.
+ */
+@interface DummyThread : NSObject
+    + (void)enterMultiThreaded;
+    + (void)dummyThreadMethod:(id)unused;
+@end
+
+@implementation DummyThread
+    + (void)dummyThreadMethod:(id)unused {
+        (void)unused;
+    }
+
+    + (void)enterMultiThreaded {
+        [NSThread detachNewThreadSelector:@selector(dummyThreadMethod:)
+                  toTarget:self
+                  withObject:nil];
+    }
+@end
+
+
 namespace glws {
 
 
@@ -74,6 +97,7 @@ class CocoaDrawable : public Drawable
 {
 public:
     NSWindow *window;
+    NSOpenGLView *view;
     NSOpenGLContext *currentContext;
 
     CocoaDrawable(const Visual *vis, int w, int h, bool pbuffer) :
@@ -93,9 +117,9 @@ public:
                                        defer:NO];
         assert(window != nil);
 
-        NSOpenGLView *view = [[NSOpenGLView alloc]
-                              initWithFrame:winRect
-                                pixelFormat:pixelFormat];
+        view = [[NSOpenGLView alloc]
+                initWithFrame:winRect
+                  pixelFormat:pixelFormat];
         assert(view != nil);
 
         [window setContentView:view];
@@ -118,7 +142,7 @@ public:
         if (currentContext != nil) {
             [currentContext update];
             [window makeKeyAndOrderFront:nil];
-            [currentContext setView:[window contentView]];
+            [currentContext setView:view];
             [currentContext makeCurrentContext];
         }
 
@@ -173,6 +197,14 @@ init(void) {
 
     initThread();
 
+    [DummyThread enterMultiThreaded];
+
+    bool isMultiThreaded = [NSThread isMultiThreaded];
+    if (!isMultiThreaded) {
+        std::cerr << "error: failed to enable Cocoa multi-threading\n";
+	exit(1);
+    }
+
     [NSApplication sharedApplication];
 
     [NSApp finishLaunching];