SL-16330 Allow vsync update without restart on mac

4 files changed, 22 insertions, 15 deletions

diff --git a/indra/llwindow/llwindow.h b/indra/llwindow/llwindow.h
index 43d81e4d59..0edf39f6ef 100644
--- a/indra/llwindow/llwindow.h
+++ b/indra/llwindow/llwindow.h
@@ -88,11 +88,11 @@ public:
     //Must be called on the same thread that called createSharedContext()
     virtual void destroySharedContext(void* context) = 0;
 
+    virtual void toggleVSync(bool enable_vsync) = 0;
 
     virtual BOOL setCursorPosition(LLCoordWindow position) = 0;
 	virtual BOOL getCursorPosition(LLCoordWindow *position) = 0;
 #if LL_WINDOWS
-    virtual void toggleVSync(bool enable_vsync) = 0;
     virtual BOOL getCursorDelta(LLCoordCommon* delta) = 0;
 #endif
 	virtual void showCursor() = 0;
diff --git a/indra/llwindow/llwindowheadless.h b/indra/llwindow/llwindowheadless.h
index 78c5e4bae4..410da79623 100644
--- a/indra/llwindow/llwindowheadless.h
+++ b/indra/llwindow/llwindowheadless.h
@@ -52,10 +52,10 @@ public:
     void* createSharedContext()  { return nullptr; }
     void makeContextCurrent(void*)  {}
     void destroySharedContext(void*)  {}
-	/*virtual*/ BOOL setCursorPosition(LLCoordWindow position) {return FALSE;};
-	/*virtual*/ BOOL getCursorPosition(LLCoordWindow *position) {return FALSE;};
+    /*virtual*/ void toggleVSync(bool enable_vsync) { }
+    /*virtual*/ BOOL setCursorPosition(LLCoordWindow position) {return FALSE;};
+    /*virtual*/ BOOL getCursorPosition(LLCoordWindow *position) {return FALSE;};
 #if LL_WINDOWS
-    /*virtual*/ virtual void toggleVSync(bool enable_vsync) { }
     /*virtual*/ BOOL getCursorDelta(LLCoordCommon* delta) { return FALSE; }
 #endif
 	/*virtual*/ void showCursor() {};
diff --git a/indra/llwindow/llwindowmacosx.cpp b/indra/llwindow/llwindowmacosx.cpp
index dac84690db..0e37e82091 100644
--- a/indra/llwindow/llwindowmacosx.cpp
+++ b/indra/llwindow/llwindowmacosx.cpp
@@ -661,17 +661,7 @@ BOOL LLWindowMacOSX::createContext(int x, int y, int width, int height, int bits
 	}
 
 	// Disable vertical sync for swap
-	GLint frames_per_swap = 0;
-	if (!enable_vsync)
-	{
-		frames_per_swap = 0;
-	}
-	else
-	{
-		frames_per_swap = 1;
-	}
-	
-	CGLSetParameter(mContext, kCGLCPSwapInterval, &frames_per_swap);
+    toggleVSync(enable_vsync);
 
 	//enable multi-threaded OpenGL
 	if (sUseMultGL)
@@ -1944,6 +1934,21 @@ void LLWindowMacOSX::destroySharedContext(void* context)
     delete sc;
 }
 
+void LLWindowMacOSX::toggleVSync(bool enable_vsync)
+{
+    GLint frames_per_swap = 0;
+    if (!enable_vsync)
+    {
+        frames_per_swap = 0;
+    }
+    else
+    {
+        frames_per_swap = 1;
+    }
+    
+    CGLSetParameter(mContext, kCGLCPSwapInterval, &frames_per_swap);
+}
+
 void LLWindowMacOSX::interruptLanguageTextInput()
 {
 	commitCurrentPreedit(mGLView);
diff --git a/indra/llwindow/llwindowmacosx.h b/indra/llwindow/llwindowmacosx.h
index 18fa86930f..b0f339e1db 100644
--- a/indra/llwindow/llwindowmacosx.h
+++ b/indra/llwindow/llwindowmacosx.h
@@ -140,6 +140,8 @@ public:
     //Must be called on the same thread that called createSharedContext()
     void destroySharedContext(void* context) override;
 
+    void toggleVSync(bool enable_vsync) override;
+
 protected:
 	LLWindowMacOSX(LLWindowCallbacks* callbacks,
 		const std::string& title, const std::string& name, int x, int y, int width, int height, U32 flags,