RFR: 8271024: Implement macOS Metal Rendering Pipeline
Andy Goryachev
angorya at openjdk.org
Thu Jul 10 22:34:45 UTC 2025
On Thu, 12 Jun 2025 23:30:24 GMT, Kevin Rushforth <kcr at 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...
>
> @tiainen Would you be able to look at the build changes and also do a test build?
Got it running in Eclipse (thank you @kevinrushforth !), please pick up changes from this branch:
https://github.com/andy-goryachev-oracle/jfx/tree/ag.metal
will test and report.
-------------
PR Comment: https://git.openjdk.org/jfx/pull/1824#issuecomment-3059344885
More information about the openjfx-dev
mailing list