Fix MacOSX External GLContext

1 files changed, 24 insertions, 0 deletions

diff --git a/src/jogl/native/macosx/MacOSXCustomCGLCode.c b/src/jogl/native/macosx/MacOSXCustomCGLCode.c
new file mode 100644
index 000000000..c29be889d
--- /dev/null
+++ b/src/jogl/native/macosx/MacOSXCustomCGLCode.c
@@ -0,0 +1,24 @@
+#include <stdlib.h>
+
+#include <assert.h>
+
+#include </usr/include/machine/types.h>
+#include "macosx-window-system.h"
+
+void CGLQueryPixelFormat(void* pixelFormat, int* iattrs, int niattrs, int* ivalues) {
+  CGLPixelFormatObj pix = (CGLPixelFormatObj) pixelFormat;
+  // FIXME: think about how specifying this might affect the API
+  int virtualScreen = 0;
+
+  int i;
+  GLint value;
+  for (i = 0; i < niattrs && iattrs[i]>0; i++) {
+    CGLPixelFormatAttribute attr = (CGLPixelFormatAttribute) iattrs[i];
+    if ( kCGLNoError == CGLDescribePixelFormat(pix, virtualScreen, attr, &value) ) {
+        ivalues[i] = value;
+    } else {
+        ivalues[i] = 0;
+    }
+  }
+}
+