I messed around with adding features to JavaFX's "JSLC" (Java Shader Language Compiler) which currently is only used at compile-time for JavaFX to convert "JSL" shaders to various platform dependent shader languages (GLSL, HLSL, etc.).
In my opinion the ideal way to implement a public shader API would be to extend JSLC to be able to be used either at user application compile time, or more ideally, at application run-time to dynamically generate platform dependent shaders depending on what platform JavaFX is running on. Then a JavaFX application developer can write platform independent shaders in JSL. This would be quite a large undertaking and have a high burden of maintenance to keep it current with fast moving shader languages. I was able to convert JSLC grammar to antlr4 (from the previous antlr3 version) in this merged commit (pre-dates the move to Github): https://github.com/openjdk/jfx/commit/52adea7c3635656421db766641416ff28213928f#diff-9c8e9478200eb2c014c196feec63537046751c0d6fe80f90b8506b11abfcc2f7 I then took advantage of a new feature in antlr4 which allows for extracting embedded actions from the grammar definition file to a visitor class: https://github.com/openjdk/jfx/commit/8889330cc30a47361d47519be2ec662fb5ebe856#diff-9c8e9478200eb2c014c196feec63537046751c0d6fe80f90b8506b11abfcc2f7 I then, in a test repository did some work in fleshing out what it would take to implement more features for JSLC which you can find (as messy commits) here: https://github.com/brcolow/jslc That's just my two cents on how a public shader API should best be added to JavaFX, by building on previous work that exists in the source code repository but is only used in a very limited and small way - but there is much potential there and I believe the original author of JSL's intent was to have it be a public API feature to allow JavaFX developers to write platform independent shaders in JSL. On Sun, Mar 14, 2021 at 3:32 PM superminerJG <jackyguo...@gmail.com> wrote: > Hi everyone. > > This problem might have been discussed numerous times, and has been held > off for quite a while. > > Although we are starting to see lighting improvements added to JavaFX, I > feel that it's necessary for JavaFX to have some kind of custom shader > pipeline. However, nobody has gotten around to doing it, so I thought that > I could lend a hand. Before I get into things, I would like to know how and > what I can contribute. The questions are at the bottom of the email. > > Thanks! > - jgcodes > > Questions: > > - Can high school students sign the OCA? (I saw the job title field on > the form and wasn't so sure I was legally allowed to sign it) > - When I implement the shader API, should it use some kind of GLSL > mapping, or should I try to extend JSL to work in 3D? > - Should I have sent this email to another mailing list? > -- Michael Ennen
