Canvas Clip performance

[Chien Yang]

It will be great if you can include in your bug report the following 2 
piece of information:

1) Run your program with -Dprism.verbose=true. This will give us the 
graphics hardware information of your system.

2) Run your program with -Dprism.order=sw. This will force JavaFX to use 
its software pipe instead of hardware graphics acceleration. It will be 
good to know whether the poor performance is due to use of d3d pipe.

- Chien

On 2/5/16, 7:34 AM, Kevin Rushforth wrote:
> Please file a bug. It might be possible for us to find a workaround, 
> although it might also be possible that this is just an unfortunate 
> limitation of Intel HD.
>
> -- Kevin
>
>
> Elric Morgenstern wrote:
>> Ok. Maybe the problems I am experiencing now with JavaFX are the 
>> reason why
>> D3D is not enabled for J2D?
>>
>> I think Intel Graphics are rather widespread among laptops, so I'm a bit
>> surprised at the huge performance drop (from solid 60 FPS to 8 once I 
>> use a
>> spherical clip shape). I'd think Intel Graphics hardware form part of 
>> the
>> test set. I'm using a fairly common laptop (especially around business
>> circles) Dell Latitude E6410.
>>
>> Any chance of this being investigated or do you think I will have to 
>> settle
>> with a workaround?
>>
>>
>> On Fri, Feb 5, 2016 at 1:01 AM, Philip Race <philip.race at oracle.com> 
>> wrote:
>>
>>> On 2/4/16, 2:59 PM, Elric Morgenstern wrote:
>>>
>>>> I see. Interesting. Isn't there a switch to toggle it on JDK8?
>>>>
>>> There is no switch that can enable it if it is disabled by 'default'.
>>>
>>>> Assuming you are talking about JavaFX, right? Because you were 
>>>> referring
>>>> to
>>>> Java2D in your reply.
>>>>
>>> No I am talking about 2D. What I meant was that maybe the 
>>> performance issue
>>> is inherent in the card and the only reason it looks OK with Java2D on
>>> Intel is
>>> that we aren't using anything much at all of the Intel chip and are 
>>> doing
>>> the work
>>> on the cpu instead.
>>>
>>> -phil.
>>>
>>>
>>>
>>>> On Thu, Feb 4, 2016 at 11:52 PM, Philip Race<philip.race at oracle.com>
>>>> wrote:
>>>>
>>>> Java 2D does not (generally) enable D3D on Intel.
>>>>> We tried for JDK 8 but there were problems and it was disabled 
>>>>> again in
>>>>> 8u40 I think.
>>>>> JDK 9 EA builds (currently) still have it enabled to help get some
>>>>> testing
>>>>> so
>>>>> if you are running an 8ux release you might want to switch to 9 to 
>>>>> get a
>>>>> fairer comparison.
>>>>>
>>>>> -phil.
>>>>>
>>>>>
>>>>>
>>>>> On 2/4/16, 2:49 PM, Elric Morgenstern wrote:
>>>>>
>>>>> Hi guys,
>>>>>> I've noticed that clipping performance (Canvas GraphicsContext) is
>>>>>> extremely bad on an Intel HD graphics chip. One rectangular clip is
>>>>>> fine,
>>>>>> anything beyond that, or a spherical clip shape, will bring the
>>>>>> framerate
>>>>>> to its knees.
>>>>>>
>>>>>> I notice no performance difference on my GeForce system, but on the
>>>>>> integrated chip my application is basically insufferable.
>>>>>>
>>>>>> The same thing performed with Java2D experiences no performance 
>>>>>> issues
>>>>>> on
>>>>>> neither system.
>>>>>>
>>>>>> Any ideas?
>>>>>>
>>>>>>