RFR: 8217472: Add attenuation for PointLight [v5]

[Kevin Rushforth]

On Tue, 1 Sep 2020 10:54:50 GMT, Nir Lisker <nlisker at openjdk.org> wrote:

>> The performance tests need a standard GPLv2+classpath copyright header. I haven't tested them yet, but will do that
>> next week.
>
> I've written a simple draft for the automated test:
> 
>         PointLight light = new PointLight(Color.BLUE);
>         light.setTranslateZ(-50);
>         var box = new Box(100, 100, 1);
>         var root = new Group(light, box);
>         var scene = new Scene(root);
>         var image = box.snapshot(null, null);
>         var nonAttenColor = image.getPixelReader().getColor(1, 1);
>         light.setLinearAttenuation(2);
>         image = box.snapshot(null, null);
>         var attenColor = image.getPixelReader().getColor(1, 1);
>         assertTrue("Attenuation color should be less than non-attenuated", nonAttenColor.getBlue() > attenColor.getBlue());
> 
> However, I'm getting the error:
> 
> java.lang.UnsupportedOperationException
> 	at javafx.graphics/test.com.sun.javafx.pgstub.StubToolkit.renderToImage(StubToolkit.java:719)
> 	at javafx.graphics/javafx.scene.Scene.doSnapshotTile(Scene.java:1383)
> 	at javafx.graphics/javafx.scene.Scene.doSnapshot(Scene.java:1319)
> 	at javafx.graphics/javafx.scene.Node.doSnapshot(Node.java:2136)
> 	at javafx.graphics/javafx.scene.Node.snapshot(Node.java:2214)
> Where is the test that takes the snapshot? I am missing something in my setup.

I guess you are trying a unit test in the `javafx.graphics` project? That won't work. It needs to be a system test in
`tests/system/...`

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PR: https://git.openjdk.java.net/jfx/pull/43