Hello, Richard.

These changes fix the problem with dropping frames on Mac because of locking 
between the render thread and UI thread.

I have made some measurements with Controls benchmark and GUIMark2. The numbers 
without braces is the FPS rendered by Prism and the braced numbers represent 
how many frames we are actually rendering on the screen.
 
     Test                         Fix                     No Fix
bitmap-1000      76.1 (76.0)      75.3 (44.1) 
bitmap-3000      38.3 (38.1)      36.9 (31.2) 
bitmap-5000      23.4 (23.2)      22.6 (18.4) 
vector               31.6 (31.3)      31.8 (29.0) 
CheckBox         79    (79)        67    (47) 

As you could see, with the fix we almost never drop frames, all of them are 
actually delivered to the screen. Prism performance is improved in some cases 
too. These are not all the results, just examples to feel the difference. 

With best regards. Petr.

On Jul 24, 2013, at 8:23 PM, Richard Bair <[email protected]> wrote:

> The name of the issue is pretty ho-hum, but actually this was a huge amount 
> of work to get finished. Petr, Artem, or Steve, can you give us a run-down of 
> the performance impact of this change on Mac?
> 
> Thanks
> Richard
> 
> On Jul 24, 2013, at 12:32 AM, [email protected] wrote:
> 
>> Changeset: dd30604ab7d0
>> Author:    Petr Pchelko <[email protected]>
>> Date:      2013-07-24 11:24 +0400
>> URL:       http://hg.openjdk.java.net/openjfx/8/graphics/rt/rev/dd30604ab7d0
>> 
>> RT-26702 Poor DisplacementMap effect performance on Mac
>> Reviewed-by: anthony, art, snorthov
>> 
>> ! modules/graphics/src/main/native-glass/mac/GlassEmbeddedWindow+Overrides.m
>> ! modules/graphics/src/main/native-glass/mac/GlassFrameBufferObject.h
>> ! modules/graphics/src/main/native-glass/mac/GlassFrameBufferObject.m
>> ! modules/graphics/src/main/native-glass/mac/GlassLayer3D.h
>> ! modules/graphics/src/main/native-glass/mac/GlassLayer3D.m
>> ! modules/graphics/src/main/native-glass/mac/GlassOffscreen.h
>> ! modules/graphics/src/main/native-glass/mac/GlassOffscreen.m
>> ! modules/graphics/src/main/native-glass/mac/GlassView3D.m
>> 
> 

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