X-Git-Url: https://main.carlh.net/gitweb/?p=dcpomatic.git;a=blobdiff_plain;f=src%2Fwx%2Fgl_video_view.cc;h=a0f83db6d4390dfba4d056d5d4eb13da67048164;hp=d16ac444185f59a7c2c3bd2ee2e158f078d06b1c;hb=95fd93f5b1432b5230be76f1521216b472744514;hpb=3044ef060894c62e8a1cef15ad14078001093982

diff --git a/src/wx/gl_video_view.cc b/src/wx/gl_video_view.cc
index d16ac4441..a0f83db6d 100644
--- a/src/wx/gl_video_view.cc
+++ b/src/wx/gl_video_view.cc
@@ -51,6 +51,7 @@ using boost::optional;
 
 GLVideoView::GLVideoView (FilmViewer* viewer, wxWindow *parent)
 	: VideoView (viewer)
+	, _vsync_enabled (false)
 {
 	_canvas = new wxGLCanvas (parent, wxID_ANY, 0, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE);
 	_context = new wxGLContext (_canvas);
@@ -62,13 +63,18 @@ GLVideoView::GLVideoView (FilmViewer* viewer, wxWindow *parent)
 		/* Enable vsync */
 		Display* dpy = wxGetX11Display();
 		glXSwapIntervalEXT (dpy, DefaultScreen(dpy), 1);
+		_vsync_enabled = true;
 	}
 #endif
 
 #ifdef DCPOMATIC_WINDOWS
 	if (_canvas->IsExtensionSupported("WGL_EXT_swap_control")) {
 		/* Enable vsync */
-		wglSwapIntervalEXT (1);
+		PFNWGLSWAPINTERVALEXTPROC swap = (PFNWGLSWAPINTERVALEXTPROC) wglGetProcAddress("wglSwapIntervalEXT");
+		if (swap) {
+			swap (1);
+			_vsync_enabled = true;
+		}
 	}
 
 #endif
@@ -77,6 +83,7 @@ GLVideoView::GLVideoView (FilmViewer* viewer, wxWindow *parent)
 	/* Enable vsync */
 	GLint swapInterval = 1;
 	CGLSetParameter (CGLGetCurrentContext(), kCGLCPSwapInterval, &swapInterval);
+	_vsync_enabled = true;
 #endif
 
 	glGenTextures (1, &_id);