Merge 8e3c423ed4 into e046d0696b

include/GLFW/glfw3native.h

@@ -67,6 +67,7 @@ extern "C" {
  *  The available context API macros are:
  *  * `GLFW_EXPOSE_NATIVE_WGL`
  *  * `GLFW_EXPOSE_NATIVE_NSGL`
+ *  * `GLFW_EXPOSE_NATIVE_CGL`
  *  * `GLFW_EXPOSE_NATIVE_GLX`
  *  * `GLFW_EXPOSE_NATIVE_EGL`
  *
@@ -109,6 +110,8 @@ extern "C" {
  /* WGL is declared by windows.h */
 #elif defined(GLFW_EXPOSE_NATIVE_NSGL)
  /* NSGL is declared by Cocoa.h */
+#elif defined(GLFW_EXPOSE_NATIVE_CGL)
+ #include <OpenGL/OpenGL.h>
 #elif defined(GLFW_EXPOSE_NATIVE_GLX)
  #include <GL/glx.h>
 #elif defined(GLFW_EXPOSE_NATIVE_EGL)
@@ -236,6 +239,14 @@ GLFWAPI id glfwGetCocoaWindow(GLFWwindow* window);
  */
 GLFWAPI id glfwGetNSGLContext(GLFWwindow* window);
 #endif
+    
+#if defined(GLFW_EXPOSE_NATIVE_CGL)
+    /*! @brief Returns the `CGLContextObj` of the specified window.
+     *  @return The `CGLContextObj` of the specified window.
+     *  @ingroup native
+     */
+    GLFWAPI CGLContextObj glfwGetCGLContext(GLFWwindow* window);
+#endif
 
 #if defined(GLFW_EXPOSE_NATIVE_X11)
 /*! @brief Returns the `Display` used by GLFW.

src/cocoa_monitor.m

@@ -38,6 +38,79 @@
 #include <ApplicationServices/ApplicationServices.h>
 
 
+// Returns the io_service_t corresponding to a CG display ID, or 0 on failure.
+// The io_service_t should be released with IOObjectRelease when not needed.
+//
+static io_service_t IOServicePortFromCGDisplayID(CGDirectDisplayID displayID)
+{
+    io_iterator_t iter;
+    io_service_t serv, servicePort = 0;
+    
+    CFMutableDictionaryRef matching = IOServiceMatching("IODisplayConnect");
+    
+    // releases matching for us
+    kern_return_t err = IOServiceGetMatchingServices(kIOMasterPortDefault,
+                                                     matching,
+                                                     &iter);
+    if (err)
+        return 0;
+    
+    while((serv = IOIteratorNext(iter)) != 0)
+    {
+        CFDictionaryRef displayInfo;
+
+        CFNumberRef vendorIDRef;
+        CFNumberRef productIDRef;
+        CFNumberRef serialNumberRef;
+
+        NSNumber *vendorID;
+        NSNumber *productID;
+        NSNumber *serialNumber;
+
+        Boolean success;
+
+        displayInfo = IODisplayCreateInfoDictionary(serv, kIODisplayOnlyPreferredName);
+
+        success = CFDictionaryGetValueIfPresent(displayInfo, CFSTR(kDisplayVendorID), (const void**)&vendorIDRef);
+        success &= CFDictionaryGetValueIfPresent(displayInfo, CFSTR(kDisplayProductID), (const void**)&productIDRef);
+
+        if(!success)
+        {
+            CFRelease(displayInfo);
+            continue;
+        }
+
+        vendorID = (__bridge NSNumber*)vendorIDRef;
+        productID = (__bridge NSNumber*)productIDRef;
+
+        // If a serial number is found use it
+        // Otherwise serial number will be nil (= 0) which will match with the output of 'CGDisplaySerialNumber'
+        if(CFDictionaryGetValueIfPresent(displayInfo, CFSTR(kDisplaySerialNumber), (const void**)&serialNumberRef))
+        {
+            serialNumber = (__bridge NSNumber*)serialNumberRef;
+        }
+
+        // If the vendor and product id along with the serial don't match
+        // then we are not looking at the correct monitor.
+        // NOTE: The serial number is important in cases where two monitors
+        //       are the exact same.
+        if(CGDisplayVendorNumber(displayID) != vendorID.unsignedIntValue ||
+           CGDisplayModelNumber(displayID) != productID.unsignedIntValue ||
+           CGDisplaySerialNumber(displayID) != serialNumber.unsignedIntValue)
+        {
+            CFRelease(displayInfo);
+            continue;
+        }
+
+        servicePort = serv;
+        CFRelease(displayInfo);
+        break;
+    }
+
+    IOObjectRelease(iter);
+    return servicePort;
+}
+
 // Get the name of the specified display
 //
 static char* getDisplayName(CGDirectDisplayID displayID)
@@ -47,10 +120,18 @@ static char* getDisplayName(CGDirectDisplayID displayID)
     CFStringRef value;
     CFIndex size;
 
-    // NOTE: This uses a deprecated function because Apple has
-    //       (as of January 2015) not provided any alternative
-    info = IODisplayCreateInfoDictionary(CGDisplayIOServicePort(displayID),
-                                         kIODisplayOnlyPreferredName);
+    // Supports OS X 10.4 Tiger and Newer
+    io_service_t serv = IOServicePortFromCGDisplayID(displayID);
+    if (serv == 0)
+    {
+        _glfwInputError(GLFW_PLATFORM_ERROR,
+                        "Cocoa: IOServicePortFromCGDisplayID Returned an Invalid Port. (Port: 0)");
+        return strdup("Unknown");
+    }
+
+    info = IODisplayCreateInfoDictionary(serv, kIODisplayOnlyPreferredName);
+    IOObjectRelease(serv);
+    
     names = CFDictionaryGetValue(info, CFSTR(kDisplayProductName));
 
     if (!names || !CFDictionaryGetValueIfPresent(names, CFSTR("en_US"),

src/nsgl_context.m

@@ -303,3 +303,8 @@ GLFWAPI id glfwGetNSGLContext(GLFWwindow* handle)
     return window->context.nsgl.object;
 }
 
+GLFWAPI CGLContextObj glfwGetCGLContext(GLFWwindow* handle)
+{
+    NSOpenGLContext* ctx = glfwGetNSGLContext(handle);
+    return [ctx CGLContextObj];
+}