On Fri, 1 Aug 2025 17:09:58 GMT, Ambarish Rapte <[email protected]> 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:
>
> kcr: review: crash regression fix
I ran a full set of automated headless tests using the MTL pipeline on my M1
running macOS 14 and everything passes now.
Andy has valid points for his follow-up questions about dispose. They should
either be addressed or documented, since the usual pattern is to
unconditionally call `super.dispose()` at the end of the `dispose()` method.
There is one other issue that needs to be addressed, and then I'll get back to
reviewing the code. This PR branch is a few commits behind master, which is
usually OK unless there have been changes that conflict semantically with the
PR.
When testing a PR, I merge master into my local review branch to make sure I'm
testing what would be the state of the repo if the PR were integrated then.
This reveals a problem, namely that the Headless glass platform needs the same
change to the `HeadlessView::_getNativeFrameBuffer` method as you did for all
other subclasses of View to avoid the following compilation error:
modules/javafx.graphics/src/main/java/com/sun/glass/ui/headless/HeadlessView.java:32:
error: HeadlessView is not abstract and does not override abstract method
_getNativeFrameBuffer(long) in View
public class HeadlessView extends View {
^
modules/javafx.graphics/src/main/java/com/sun/glass/ui/headless/HeadlessView.java:87:
error: _getNativeFrameBuffer(long) in HeadlessView cannot override
_getNativeFrameBuffer(long) in View
protected int _getNativeFrameBuffer(long ptr) {
^
return type int is not compatible with long
So you will need to merge the latest master into your PR branch and make the
needed change.
-------------
PR Comment: https://git.openjdk.org/jfx/pull/1824#issuecomment-3145700979
PR Comment: https://git.openjdk.org/jfx/pull/1824#issuecomment-3145702499
