On Wed, 2 Jul 2025 07:53:24 GMT, Ambarish Rapte <ara...@openjdk.org> wrote:

>> ### Description
>> This is the implementation of new graphics rendering pipeline for JavaFX 
>> using Metal APIs on MacOS.
>> We released two Early Access (EA) builds and have reached a stage where it 
>> is ready to be integrated.
>> Default rendering pipeline on macOS has not been changed by this PR. OpenGL 
>> still stays as the default rendering pipeline and Metal rendering pipeline 
>> is optional to choose (by providing  `-Dprism.order=mtl`)
>> The `-Dprism.verbose=true` option can be used to verify the rendering 
>> pipeline in use.
>> 
>> ### Details about the changes
>> 
>> **Shader changes**
>> - MSLBackend class: This is the primary class that parses (Prism and Decora) 
>> jsl shaders into Metal shaders(msl)
>> - There are a few additional Metal shader files added under directory : 
>> modules/javafx.graphics/src/main/native-prism-mtl/msl
>> 
>> **Build changes** - There are new tasks added to build.gradle for
>> - Generation/ Compilation/ linking of Metal shaders
>> - Compilation of Prism Java and Objective C files
>> 
>> **Prism** - Prism is the rendering engine of JavaFX.
>> - Added Metal specific Java classes and respective native implementation 
>> which use Metal APIs
>> - Java side changes:
>>   - New Metal specific classes: Classes prefixed with MTL, are added here : 
>> modules/javafx.graphics/src/main/java/com/sun/prism/mtl 
>>   - Modification to Prism common classes: A few limited changes were 
>> required in Prism common classes to support Metal classes. 
>> - Native side changes:
>>   - New Metal specific Objective C implementation is added here: 
>> modules/javafx.graphics/src/main/native-prism-mtl
>> 
>> **Glass** - Glass is the windowing toolkit of JavaFX
>> - Existing Glass classes are refactored to support both OpenGL and Metal 
>> pipelines
>> - Added Metal specific Glass implementation.
>> 
>> ### Testing
>> - Testing performed on different hardware and macOS versions.
>>   - HW - macBooks with Intel, Intel with discrete graphics card, Apple 
>> Silicon (M1, M2 and M4)
>>   - macOS versions - macOS 13, macOS 14 and macOS 15
>> - Functional Testing:
>>   - All headful tests pass with Metal pipeline.
>>   - Verified samples applications: Ensemble and toys
>> - Performance Testing:
>>   - Tested with RenderPerfTest: Almost all tests match/exceed es2 
>> performance except a few that fall a little short on different hardwares. 
>> These will be addressed separately (there are open bugs already filed)
>> 
>> ### Note to reviewers :
>> - Providing `-Dprism.order=mtl` option is a must for testing the Metal 
>> pipeline
>> - It woul...
>
> Ambarish Rapte has updated the pull request incrementally with one additional 
> commit since the last revision:
> 
>   add @Override

Went through all the controls in the monkey tester (inc. animated), saw no 
problems or graphic artifacts.

Encountered a weird issue with the WebView - not sure if related.  Had to go 
off VPN to load https://yahoo.com, then logged back into VPN and the 
application froze completely with the beach ball icon.  Can drag the window to 
another monitor (looks fuzzy bc resolution), but otherwise locked up.

I don't know when it locked up exactly, but you may want to investigate (I 
don't think network going up or down should have any impact on the application 
responsiveness).

Here is where it is stuck in the FX application thread:
<img width="918" height="1046" alt="Screenshot 2025-07-10 at 15 46 40" 
src="https://github.com/user-attachments/assets/b0c35b62-0d2c-40dc-84b3-7480caba0caf";
 />

-------------

PR Comment: https://git.openjdk.org/jfx/pull/1824#issuecomment-3059414301

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