vsync support

-works on windows
-may not work on X11, if so please fix
-OSX does not seem to support disabling vsync

1 files changed, 16 insertions, 1 deletions

diff --git a/platform/windows/context_gl_win.cpp b/platform/windows/context_gl_win.cpp
index ab66b81421..fd9e895370 100644
--- a/platform/windows/context_gl_win.cpp
+++ b/platform/windows/context_gl_win.cpp
@@ -96,6 +96,20 @@ static GLWrapperFuncPtr wrapper_get_proc_address(const char* p_function) {
 }
 */
 
+void ContextGL_Win::set_use_vsync(bool p_use) {
+
+	if (wglSwapIntervalEXT) {
+		wglSwapIntervalEXT(p_use?1:0);
+	}
+	use_vsync=p_use;
+
+}
+
+bool ContextGL_Win::is_using_vsync() const {
+
+	return use_vsync;
+}
+
 
 Error ContextGL_Win::initialize() {
 
@@ -184,7 +198,7 @@ Error ContextGL_Win::initialize() {
 		printf("Activated GL 3.1 context");
 	}
 
-
+	wglSwapIntervalEXT = (PFNWGLSWAPINTERVALEXTPROC)  wglGetProcAddress ("wglSwapIntervalEXT");
 //	glWrapperInit(wrapper_get_proc_address);
 
 	return OK;
@@ -194,6 +208,7 @@ ContextGL_Win::ContextGL_Win(HWND hwnd,bool p_opengl_3_context) {
 
 	opengl_3_context=p_opengl_3_context;
 	hWnd=hwnd;
+	use_vsync=false;
 }
 
 ContextGL_Win::~ContextGL_Win() {