Posted by imakerobots on May 28, 2023; 4:37pm
URL: https://forum.jogamp.org/How-do-I-use-stencil-textures-for-outlining-shapes-tp4042652p4042657.html

You're right, I left out some basic stuff.  My ticket-fu :(

Windows 11, JDK 15.0.2

I didn't have any instance of "etc\test_dbg.bat" on my computer or in the jogamp jar file.  I found https://jogamp.org/deployment/jogamp-current/archive/jogamp-all-platforms.7z, extracted the files, clicked the bat in windows and it generates a log file that says

   Error: Could not find or load main class com.jogamp.newt.opengl.GLWindow
   Caused by: java.lang.ClassNotFoundException: com.jogamp.newt.opengl.GLWindow

same results for test.bat.  I was able to programmatically run `JoglVersion.getInstance().toString()` to get

-----------------------------------------------------------------------------------------------------
Package: com.jogamp
Extension Name: com.jogamp
Specification Title: JogAmp Java Bindings Specification
Specification Vendor: JogAmp Community
Specification Version: 2.4
Implementation Title: JogAmp Java Bindings Fat Jar
Implementation Vendor: JogAmp Community
Implementation Vendor ID: com.jogamp
Implementation URL: http://jogamp.org/
Implementation Version: 2.4.0-rc-20190410
Implementation Build: 2.4-b916-20190410
Implementation Branch: origin/master
Implementation Commit: 8c4e3c5abe2dd2d6cdebe7de93a942075bf72762
Implementation SHA Sources: null
Implementation SHA Classes: null
Implementation SHA Classes-this: null
Implementation SHA Natives: null
Implementation SHA Natives-this: null
-----------------------------------------------------------------------------------------------------

The FAQ mentioned GlueGenVersion (which produced the same thing) and Platform (Which didn't follow the convention or have a getInstance().toString())

I went back to the extract root with CLI and ran "etc\test_dbg.bat".  Finally! FAQ instructions could be a lot clearer.

test_dbg.zip

Here is the other log file, too.test.log

Oh I see, the instructions in your message were sort of in reverse order.

The main() from each class
com/marginallyclever/robotoverlord/renderpanel/OpenGLTestOrthographic.java
com/marginallyclever/robotoverlord/renderpanel/OpenGLTestPerspective.java
com/marginallyclever/robotoverlord/renderpanel/OpenGLTestStencil.java
can be run to show basic orthographic drawing, basic perspective drawing, and finally perspective with stencil (failing).

I don't know what you mean by "first off" and "alpha discard".  If you have some way to achieve the effect I'm looking for, please let me know.  I'm happy to skip the stencil buffer completely if I don't need it.

Thank you!