JavaFX graphics performance

[Chien Yang]

Hi Michael,

Yes, this is a server bug and a backport to 8u and 9 is also being 
consider at this moment. Thanks for bringing it to our attention.

Thanks,
- Chien

On 4/18/17, 2:22 AM, Michael Paus wrote:
> Hi
>
> In
> https://bugs.openjdk.java.net/browse/JDK-8178804
> "Excessive memory consumption in TriangleMesh/MeshView"
> you wrote:
> There is a missing divide (by VERTEX_SIZE_VB) when computing the 
> growth of vertexBuffer array as needed. Hence it has the potential of 
> creating a vertexBuffer and some cached data to 9 times as big as 
> designed. However this bug only affect Mesh with 
> VertexFormat.POINT_NORMAL_TEXCOORD.
>
> This somehow contradicts your last comment in
> https://bugs.openjdk.java.net/browse/JDK-8089605
> "[3D] TriangleMesh/MeshView high memory/CPU usage"
> Application should use the new user-defined normals format for dynamic 
> mesh to avoid high memory and CPU usage.
>
> I hope the bug fix will also be backported to Java 8.
> Michael
>
> Am 12.04.17 um 22:19 schrieb Chien Yang:
>> BTW, it is a bug that we are unaware of if you are seeing a 60X 
>> nominal memory consumption in your program.  Please file a JIRA with 
>> a test program and we will investigate it.
>>
>> Thanks,
>>
>> - Chien
>>
>>
>> On 4/10/2017 1:08 PM, Kevin Rushforth wrote:
>>> We are planning some performance improvements in JDK 10, mostly in 
>>> the areas of CSS and layout. If you have specific concerns in other 
>>> areas we could look into them. Having a specific test case that 
>>> shows a performance problem would be a good start.
>>>
>>> -- Kevin
>>>
>>>
>>> Michael Paus wrote:
>>>> Hi,
>>>>
>>>> more and more people ask me why I am still doing GUI development in 
>>>> JavaFX instead
>>>> of following the  mainstream and use some web technology. One of 
>>>> the arguments
>>>> I could use in the past was performance but nowadays this does not 
>>>> seem to be such
>>>> a valid argument anymore. Web technologies are catching up quickly 
>>>> and JavaFX currently
>>>> has not much to offer here. Actually the general drawing 
>>>> performance is very bad compared
>>>> to what is in principle possible with a modern GPU. I even tried to 
>>>> use a TriangleMesh
>>>> to better exploit the graphics hardware but this approach is also 
>>>> limited by the fact that
>>>> a TrinangleMesh has an excessive memory usage (about 60 times its 
>>>> nominal memory
>>>> consumption). I would therefore like to ask whether there are 
>>>> already any plans for Java 10
>>>> to improve this situation?
>>>>
>>>> Michael
>>
>