From 06e95693fb51d5776619b9ede04a7c13fd200e03 Mon Sep 17 00:00:00 2001
From: Jesse Natalie <jenatali@microsoft.com>
Date: Wed, 8 Sep 2021 12:54:17 -0700
Subject: [PATCH] egl: Detect Windows platform using GDI

Reviewed-by: Eric Engestrom <eric@engestrom.ch>
Reviewed By: Bill Kristiansen <billkris@microsoft.com>

Acked-by: Roland Scheidegger <sroland@vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12727>
---
 src/egl/main/egldisplay.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/egl/main/egldisplay.c b/src/egl/main/egldisplay.c
index 739d7d0aac3..131fc22786f 100644
--- a/src/egl/main/egldisplay.c
+++ b/src/egl/main/egldisplay.c
@@ -64,6 +64,9 @@
 #ifdef HAVE_DRM_PLATFORM
 #include <gbm.h>
 #endif
+#ifdef HAVE_WINDOWS_PLATFORM
+#include <windows.h>
+#endif
 
 
 /**
@@ -128,6 +131,11 @@ _eglNativePlatformDetectNativeDisplay(void *nativeDisplay)
    if (nativeDisplay == EGL_DEFAULT_DISPLAY)
       return _EGL_INVALID_PLATFORM;
 
+#ifdef HAVE_WINDOWS_PLATFORM
+   if (GetObjectType(nativeDisplay) == OBJ_DC)
+      return _EGL_PLATFORM_WINDOWS;
+#endif
+
 #if defined(HAVE_WAYLAND_PLATFORM) || defined(HAVE_DRM_PLATFORM)
    if (_eglPointerIsDereferencable(nativeDisplay)) {
       void *first_pointer = *(void **) nativeDisplay;