[OpenJDK 2D-Dev] RFR 8225160: Merge JDK-8220154 initial metal implementation patch to the jdk sandbox branch

[Jayathirth Rao]

Hello All,

Please review the below code changes: 

JBS : https://bugs.openjdk.java.net/browse/JDK-8225160 <https://bugs.openjdk.java.net/browse/JDK-8225160> 

We have merged most of the code provided for review by JetBrains for JDK-8220154 <https://bugs.openjdk.java.net/browse/JDK-8220154> to the jdk/sandbox(http://hg.openjdk.java.net/jdk/sandbox <http://hg.openjdk.java.net/jdk/sandbox>).
Corresponding webrev for the change is http://cr.openjdk.java.net/~jdv/8225160/webrev.00/ <http://cr.openjdk.java.net/~jdv/8225160/webrev.00/> . This webrev has JetBrains code from JDK-8220154 <https://bugs.openjdk.java.net/browse/JDK-8220154> and our delta modification[1] over jdk/sandbox metal-prototype-branch

For additional info : 
1. A webrev relative to the jdk/client codebase - this has JetBrains webrev for JDK-8220154 <https://bugs.openjdk.java.net/browse/JDK-8220154> and our delta modification 
   http://cr.openjdk.java.net/~aghaisas/8225160/JB_plus_delta/webrev.1/ <http://cr.openjdk.java.net/~aghaisas/8225160/JB_plus_delta/webrev.1/> 

2. A webrev showing our delta modifications over JetBrains webrev for JDK-8220154 <https://bugs.openjdk.java.net/browse/JDK-8220154> 
    http://cr.openjdk.java.net/~aghaisas/8225160/webrev.1/ <http://cr.openjdk.java.net/~aghaisas/8225160/webrev.1/> 


[1] Delta modification: At native rendering side Ajit has added delta modifications to implement FillRect and DrawParallelogram logic using JetBrains initialisation logic.

Apart from how we initialise GraphicsConfig and native rendering most of the upper level logic is similar so we have taken most of the JetBrains code with MTL*** files. Also native rendering state management code from JetBrains we have merged.
Comparison of code at GraphicsConfig, SurfaceData and Layer is captured under subtask : https://bugs.openjdk.java.net/browse/JDK-8225165 <https://bugs.openjdk.java.net/browse/JDK-8225165> .

Thanks,
Jay
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