Merge 2d1a98136e into c85294e0b2

.gitignore

@@ -25,6 +25,7 @@ src/glfw_config.h
 src/glfw3.pc
 src/glfwConfig.cmake
 src/glfwConfigVersion.cmake
+install_manifest.txt
 
 # Compiled binaries
 src/libglfw.so

include/GLFW/glfw3native.h

@@ -55,7 +55,8 @@ extern "C" {
  *
  *  The available context API macros are:
  *  * `GLFW_EXPOSE_NATIVE_WGL`
- *  * `GLFW_EXPOSE_NATIVE_NSGL`
+ *  * `GLFW_EXPOSE_NATIVE_NSGL` (OSX, ObjC required to do anything useful)
+ *  * `GLFW_EXPOSE_NATIVE_CGL`
  *  * `GLFW_EXPOSE_NATIVE_GLX`
  *  * `GLFW_EXPOSE_NATIVE_EGL`
  *
@@ -94,6 +95,8 @@ 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)
@@ -151,6 +154,14 @@ 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.
  *  @return The `Display` used by GLFW.

src/cocoa_monitor.m

@@ -38,6 +38,68 @@
 #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 info;
+        CFIndex vendorID, productID;
+        CFNumberRef vendorIDRef, productIDRef;
+        Boolean success;
+        
+        info = IODisplayCreateInfoDictionary(serv,
+                             kIODisplayOnlyPreferredName);
+        
+        vendorIDRef = CFDictionaryGetValue(info,
+                           CFSTR(kDisplayVendorID));
+        productIDRef = CFDictionaryGetValue(info,
+                            CFSTR(kDisplayProductID));
+        
+        success = CFNumberGetValue(vendorIDRef, kCFNumberCFIndexType,
+                                   &vendorID);
+        success &= CFNumberGetValue(productIDRef, kCFNumberCFIndexType,
+                                    &productID);
+
+        if (!success)
+        {
+            CFRelease(info);
+            continue;
+        }
+        
+        if (CGDisplayVendorNumber(displayID) != vendorID ||
+            CGDisplayModelNumber(displayID) != productID)
+        {
+            CFRelease(info);
+            continue;
+        }
+        
+        // we're a match
+        servicePort = serv;
+        CFRelease(info);
+        break;
+    }
+    
+    IOObjectRelease(iter);
+    return servicePort;
+}
+
 // Get the name of the specified display
 //
 static char* getDisplayName(CGDirectDisplayID displayID)
@@ -47,8 +109,17 @@ static char* getDisplayName(CGDirectDisplayID displayID)
     CFStringRef value;
     CFIndex size;
     
-    info = IODisplayCreateInfoDictionary(CGDisplayIOServicePort(displayID),
+    io_service_t serv = IOServicePortFromCGDisplayID(displayID);
+    if (!serv)
+    {
+        return strdup("Unknown");
+    }
+    
+    info = IODisplayCreateInfoDictionary(serv,
                          kIODisplayOnlyPreferredName);
+    
+    IOObjectRelease(serv);
+    
     names = CFDictionaryGetValue(info, CFSTR(kDisplayProductName));
     
     if (!names || !CFDictionaryGetValueIfPresent(names, CFSTR("en_US"),
@@ -56,7 +127,6 @@ static char* getDisplayName(CGDirectDisplayID displayID)
     {
         // This may happen if a desktop Mac is running headless
         _glfwInputError(GLFW_PLATFORM_ERROR, "Failed to retrieve display name");
-
         CFRelease(info);
         return strdup("Unknown");
     }
@@ -71,6 +141,7 @@ static char* getDisplayName(CGDirectDisplayID displayID)
     return name;
 }
 
+
 // Check whether the display mode should be included in enumeration
 //
 static GLboolean modeIsGood(CGDisplayModeRef mode)

src/nsgl_context.m

@@ -299,3 +299,9 @@ GLFWAPI id glfwGetNSGLContext(GLFWwindow* handle)
     return window->nsgl.context;
 }
 
+GLFWAPI CGLContextObj glfwGetCGLContext(GLFWwindow* handle)
+{
+        NSOpenGLContext* ctx = glfwGetNSGLContext(handle);
+        return [ctx CGLContextObj];
+}
+