[gl4java-usergroup] gl4java on MacOSX

[Luca L. <Luc...@in...>]

Hi all,

during the last raining weekend I played a little bit on my powerbook with MacOSX (I am running it full time from a couple of months) trying to port gl4java on it (thanks to Sven I am using gl4java on my java app from a couple of years now). I know Sven is working on that but I tried to see if I can get some hints.

Actually I am able to compile the libraries both from the makefile and from Project Builder. The hard part was to discover the format for native libraries in MacOSX and I got it.

I started from the mac code of Gerard for the platform dependent part with very little modification....
Now the problem, running the info:
java gl4java.GLContext -info

I get the following (if I comment a couple of methods where the bus error is generated I get also the java window but without the information content, just to confirm that the native libraries are working):

jvm vendor: Apple Computer, Inc.
jvm version: 1.2.2
jvm version (parsed): major: 1, minor: 2
loaded native library: GL4JavaJauGljJNI12
loaded native library: GL4JavaJauGLJNI12
loaded native library: GL4JavaJauGLUJNI12
native Libraries loaded succesfull
GLFunc implementation GLFuncJauJNI created succesfull
GLUFunc implementation GLUFuncJauJNI created succesfull
>>> createGLContext
>>> gljInit
sizes: jint=4 AGLDrawable=4 AGLContext= 4 
GLbyte 1
GLshort 2
GLint 4
GLfloat 4
GLdouble 8
GLubyte 1
GLboolean 1
GLushort 2
GLuint 4
GLenum 4
GLbitfield 4

jboolean 1
jbyte 1
jchar 2
jshort 2
jint 4
jlong 8
jfloat 4
jdouble 8
openOpenGL: fglContext ok 
openOpenGL: received pData  147735408 
openOpenGL: glDrawable ok 
the renderers that are available on this system: 
Device :  0 
invalid display (Error code 10006)
*** malloc[2371]: argument too large: -28
Bus error

I am not a professional programmer and also my background is not on informatic but I think the problem could be to one or the second of the following facts:

- I have some warning during compilation about incompatible pointers:

...............
CNativeCode/OpenGL_macosx.c:301: warning: int format, long int arg (arg 3)
CNativeCode/OpenGL_macosx.c:301: warning: int format, long int arg (arg 4)
CNativeCode/OpenGL_macosx.c:301: warning: int format, long int arg (arg 5)
CNativeCode/OpenGL_macosx.c:397: warning: int format, long int arg (arg 3)
CNativeCode/OpenGL_macosx.c:442: warning: passing arg 7 of `get_GC' from incompatible pointer type
CNativeCode/OpenGL_macosx.c:442: warning: passing arg 8 of `get_GC' from incompatible pointer type
CNativeCode/OpenGL_macosx.c:454: warning: int format, long int arg (arg 3)
CNativeCode/OpenGL_macosx.c:460: warning: int format, long int arg (arg 3)
..........

- In the macosx documentation there is something about the fact that calling Toolbox functions (the toolbox was used in the Mac OS for writing GUI) in MacOS X requires a lock on the toolbox (not necessary with MacOS) otherwise you can get memory corruption and bus errors.

There is someone who can help at this stage?

			Best regards,
				Luca Lutterotti