Added glfwGet*Adapter to native API.

README.md

@@ -66,7 +66,7 @@ GLFW bundles a number of dependencies in the `deps/` directory.
  - Added `glfwCreateCursor`, `glfwDestroyCursor` and `glfwSetCursor` for
    managing custom system cursors
  - Added `GLFWimage` struct for passing 32-bit RGBA images
- - Added native monitor handle access to native API
+ - Added monitor and adapter identifier access to native API
  - Added `glfwSetDropCallback` and `GLFWdropfun` for receiving dropped files
  - Added `glfwPostEmptyEvent` for allowing secondary threads to cause
    `glfwWaitEvents` to return

include/GLFW/glfw3native.h

@@ -108,9 +108,9 @@ extern "C" {
  *************************************************************************/
 
 #if defined(GLFW_EXPOSE_NATIVE_WIN32)
-/*! @brief Returns the display device name of the specified monitor.
+/*! @brief Returns the adapter device name of the specified monitor.
  *
- *  @return The UTF-8 encoded display device name (`DISPLAY_DEVICE.DeviceName`)
+ *  @return The UTF-8 encoded adapter device name (for example `\\.\DISPLAY1`)
  *  of the specified monitor, or `NULL` if an [error](@ref error_handling)
  *  occurred.
  *
@@ -122,6 +122,22 @@ extern "C" {
  *
  *  @ingroup native
  */
+GLFWAPI const char* glfwGetWin32Adapter(GLFWmonitor* monitor);
+
+/*! @brief Returns the display device name of the specified monitor.
+ *
+ *  @return The UTF-8 encoded display device name (for example
+ *  `\\.\DISPLAY1\Monitor0`) of the specified monitor, or `NULL` if an
+ *  [error](@ref error_handling) occurred.
+ *
+ *  @par Thread Safety
+ *  This function may be called from any thread.  Access is not synchronized.
+ *
+ *  @par History
+ *  Added in GLFW 3.1.
+ *
+ *  @ingroup native
+ */
 GLFWAPI const char* glfwGetWin32Monitor(GLFWmonitor* monitor);
 
 /*! @brief Returns the `HWND` of the specified window.
@@ -222,6 +238,21 @@ GLFWAPI id glfwGetNSGLContext(GLFWwindow* window);
  */
 GLFWAPI Display* glfwGetX11Display(void);
 
+/*! @brief Returns the `RRCrtc` of the specified monitor.
+ *
+ *  @return The `RRCrtc` of the specified monitor, or `None` if an
+ *  [error](@ref error_handling) occurred.
+ *
+ *  @par Thread Safety
+ *  This function may be called from any thread.  Access is not synchronized.
+ *
+ *  @par History
+ *  Added in GLFW 3.1.
+ *
+ *  @ingroup native
+ */
+GLFWAPI RRCrtc glfwGetX11Adapter(GLFWmonitor* monitor);
+
 /*! @brief Returns the `RROutput` of the specified monitor.
  *
  *  @return The `RROutput` of the specified monitor, or `None` if an

src/win32_monitor.c

@@ -160,10 +160,16 @@ _GLFWmonitor** _glfwPlatformGetMonitors(int* count)
             wcscpy(monitors[found]->win32.adapterName, adapter.DeviceName);
             wcscpy(monitors[found]->win32.displayName, display.DeviceName);
 
+            WideCharToMultiByte(CP_UTF8, 0,
+                                adapter.DeviceName, -1,
+                                monitors[found]->win32.publicAdapterName,
+                                sizeof(monitors[found]->win32.publicAdapterName),
+                                NULL, NULL);
+
             WideCharToMultiByte(CP_UTF8, 0,
                                 display.DeviceName, -1,
-                                monitors[found]->win32.nativeName,
-                                sizeof(monitors[found]->win32.nativeName),
+                                monitors[found]->win32.publicDisplayName,
+                                sizeof(monitors[found]->win32.publicDisplayName),
                                 NULL, NULL);
 
             if (adapter.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE &&
@@ -326,10 +332,17 @@ void _glfwPlatformSetGammaRamp(_GLFWmonitor* monitor, const GLFWgammaramp* ramp)
 //////                        GLFW native API                       //////
 //////////////////////////////////////////////////////////////////////////
 
+GLFWAPI const char* glfwGetWin32Adapter(GLFWmonitor* handle)
+{
+    _GLFWmonitor* monitor = (_GLFWmonitor*) handle;
+    _GLFW_REQUIRE_INIT_OR_RETURN(NULL);
+    return monitor->win32.publicAdapterName;
+}
+
 GLFWAPI const char* glfwGetWin32Monitor(GLFWmonitor* handle)
 {
     _GLFWmonitor* monitor = (_GLFWmonitor*) handle;
     _GLFW_REQUIRE_INIT_OR_RETURN(NULL);
-    return monitor->win32.nativeName;
+    return monitor->win32.publicDisplayName;
 }
 

src/win32_platform.h

@@ -205,7 +205,8 @@ typedef struct _GLFWmonitorWin32
     // This size matches the static size of DISPLAY_DEVICE.DeviceName
     WCHAR               adapterName[32];
     WCHAR               displayName[32];
-    char                nativeName[64];
+    char                publicAdapterName[64];
+    char                publicDisplayName[64];
     GLboolean           modeChanged;
 
 } _GLFWmonitorWin32;

src/x11_monitor.c

@@ -465,6 +465,13 @@ void _glfwPlatformSetGammaRamp(_GLFWmonitor* monitor, const GLFWgammaramp* ramp)
 //////                        GLFW native API                       //////
 //////////////////////////////////////////////////////////////////////////
 
+GLFWAPI RRCrtc glfwGetX11Adapter(GLFWmonitor* handle)
+{
+    _GLFWmonitor* monitor = (_GLFWmonitor*) handle;
+    _GLFW_REQUIRE_INIT_OR_RETURN(None);
+    return monitor->x11.crtc;
+}
+
 GLFWAPI RROutput glfwGetX11Monitor(GLFWmonitor* handle)
 {
     _GLFWmonitor* monitor = (_GLFWmonitor*) handle;