[OpenJDK 2D-Dev] RFR: 8250658: Performance of ClipFlatOval Renderperf test is very low

[Ajit Ghaisas]

On Tue, 11 May 2021 16:06:09 GMT, Alexey Ushakov <avu at openjdk.org> wrote:

>> src/java.desktop/macosx/native/libawt_lwawt/java2d/metal/MTLClip.h line 52:
>> 
>>> 50: @property (readonly) id<MTLTexture> stencilTextureRef;
>>> 51: @property (readonly) BOOL stencilMaskGenerationInProgress;
>>> 52: @property (readwrite ) BOOL stencilMaskGenerationStarted;
>> 
>> Is 'stencilMaskGenerationStarted' property needed?
>> I don't see it being used anywhere to compare.
>
> It is used here src/java.desktop/macosx/native/libawt_lwawt/java2d/metal/EncoderManager.m (430)
> 
> The main goal of the property is to continue clip generation. Sometimes we're unable to produce all the scanlines at once

Ah.. I wonder- how did I miss it? Thanks for pointing out.

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PR: https://git.openjdk.java.net/jdk/pull/3929