BF: Change window switching logic to also bind the FBO if enabled.

psychopy/visual/basevisual.py

@@ -1151,9 +1151,7 @@ def draw(self):
 
     def _selectWindow(self, win):
         # don't call switch if it's already the curr window
-        if win != globalVars.currWindow and win.winType == 'pyglet':
-            win.winHandle.switch_to()
-            globalVars.currWindow = win
+        self.win._setCurrent()
 
     def _updateList(self):
         """The user shouldn't need this method since it gets called

psychopy/visual/window.py

@@ -548,6 +548,23 @@ def saveFrameIntervals(self, fileName=None, clear=True):
             self.frameIntervals = []
             self.frameClock.reset()
 
+    def _setCurrent(self):
+        """Make this window current.
+        """
+        if self != globalVars.currWindow and self.winType == 'pyglet':
+            self.winHandle.switch_to()
+            globalVars.currWindow = win
+
+            # if we are using an FBO, bind it
+            if self.useFBO:
+                GL.glBindFramebufferEXT(GL.GL_FRAMEBUFFER_EXT,
+                                        self.frameBuffer)
+                GL.glReadBuffer(GL.GL_COLOR_ATTACHMENT0_EXT)
+                GL.glDrawBuffer(GL.GL_COLOR_ATTACHMENT0_EXT)
+                GL.glActiveTexture(GL.GL_TEXTURE0)
+                GL.glBindTexture(GL.GL_TEXTURE_2D, 0)
+                GL.glEnable(GL.GL_STENCIL_TEST)
+
     def onResize(self, width, height):
         """A default resize event handler.