- fixed calculation of projection matrix for weapon sprites.

- fixed color mask for green/magenta.
- fixed crash when initializing video, because it was accessing 'screen' before it was set from within the framebuffer's constructor.

src/gl/system/gl_framebuffer.cpp

@@ -377,7 +377,7 @@ void OpenGLFrameBuffer::SetViewportRects(IntRect *bounds)
 	if (!bounds)
 	{
 		auto vrmode = VRMode::GetVRMode(true);
-		vrmode->AdjustViewport();
+		vrmode->AdjustViewport(this);
 	}
 }