Large Image Export

[Kevin Rushforth]

Yes, the limitation is in snapshot, although there are other places 
where we hit the same limit. When rendering an image via an InageView we 
do the tiling correctly.

I haven't seen anything lower than 4K x 4X in practice, so that should 
be safe. We do query and keep the max texture size internally in Prism 
(per-resource-factory), but don't expose it via a public API.

-- Kevin


Danno Ferrin wrote:
> So the limitation is in the snapshot code, not the target image code? 
>  This is actually a feasible workaround, so 8u40 would be grand but 9 
> is also just fine.
>
> Also, is 4K the lowest the texture size max will be?  Or is there some 
> API to query it?
>
>
> On Fri, Jun 13, 2014 at 9:38 AM, Kevin Rushforth 
> <kevin.rushforth at oracle.com <mailto:kevin.rushforth at oracle.com>> wrote:
>
>     This is RT-22073 <https://javafx-jira.kenai.com/browse/RT-22073>
>     which is currently targeted for 9, but could be moved into 8u20 if
>     there was enough demand to fix it. The (rather ugly) app-level
>     workaround is to break the operation up into 4Kx4K tiles, and
>     render the tiles in a loop specifying the appropriate viewport and
>     translation via ShapshotParams.
>
>     -- Kevin
>
>
>
>
>     Danno Ferrin wrote:
>>     While working on a fun project I discovered that the Image Export limits
>>     the size of the export textures, mostly depending on your graphics stack.
>>      Here's one example:
>>
>>     java.lang.RuntimeException: Requested texture dimensions (20581x245)
>>     require dimensions (0x245) that exceed maximum texture size (16384)
>>     at com.sun.prism.es2.ES2RTTexture.create(ES2RTTexture.java:220)
>>     at
>>     com.sun.prism.es2.ES2ResourceFactory.createRTTexture(ES2ResourceFactory.java:106)
>>     at
>>     com.sun.prism.es2.ES2ResourceFactory.createRTTexture(ES2ResourceFactory.java:102)
>>     at
>>     com.sun.javafx.tk.quantum.QuantumToolkit$QuantumImage.getRT(QuantumToolkit.java:1210)
>>     at com.sun.javafx.tk.quantum.QuantumToolkit$18.run(QuantumToolkit.java:1345)
>>     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
>>     at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
>>     at com.sun.javafx.tk.RenderJob.run(RenderJob.java:58)
>>     at
>>     java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>>     at
>>     java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>>     at
>>     com.sun.javafx.tk.quantum.QuantumRenderer$PipelineRunnable.run(QuantumRenderer.java:129)
>>
>>     This is on a mid-2012 Mac Book Air, and the MacGLConext looks to limit
>>     dimensions to 2^14.
>>
>>     Is there anything I can do other than making sure my nodes don't get bigger
>>     than 16K on one side?  I've tried setting a transform on the snapshot and
>>     zooming it below 16k, but it still gets the same exception with he same
>>     dimensions.
>>
>>     --Danno
>>       
>
>