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917 :: opengl on osx

• WM_USR (orginal) [2015-02-23T21:16:06+01:00] view original

  I have 0.10.2 on OSx10.9.5 and installed the opengl package using nimble I can compile a simple glut_example.nim from github https://github.com/nim-lang/opengl but when it runs in crashes after entering glut_init() with a SIGSEGV: Illegal storage access. at line lib/system/gc.nim(1055) GC_enable ***

  Is this a known issue?

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• Varriount (orginal) [2015-02-24T04:18:41+01:00] view original

  Could you give some information about your setup? What version is your C compiler? What about the Nim compiler? What version of opengl does your Mac support?

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• gabeu (orginal) [2015-02-25T00:59:47+01:00] view original

  I am having the same problem but I am not on a Mac. I am on windows 8.1 running the nim compiler version 0.10.2, with gcc version 4.8.1 and openGL version 4.3. I used nimble to get the openGL package and I am trying to run the same example, I get the same error from the same place. So whatever is causing WM_USR's problem is probably causing mine too which means it is probably not because it is a Mac.

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• def (orginal) [2015-02-25T01:02:00+01:00] view original

  Can you check whether this has been fixed in the current devel branch of Nim?

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• OderWat (orginal) [2015-02-25T01:32:55+01:00] view original

  I am getting this on my mac:

  
  /glut_example
  glut_example(2578,0x7fff722aa300) malloc: *** mach_vm_map(size=18446744070157651968) failed (error code=3)
  *** error: can't allocate region
  *** set a breakpoint in malloc_error_break to debug
  2015-02-25 01:19:06.327 glut_example[2578:1040079] GLUT Fatal Error: out of memory.
  Run

  I could fix it by adding dummy parameter to the initGlut() call like this:

  var x: cint = 0
  glutInit(addr x, nil)
  Run

  In glut.nim is the following code:

  {.push dynlib: dllname, importc.}
  proc glutInit*(argcp: ptr cint, argv: pointer)
  
  proc glutInit*() =
    ## version that passes `argc` and `argc` implicitely.
    var
      cmdLine {.importc: "cmdLine".}: array[0..255, cstring]
      cmdCount {.importc: "cmdCount".}: cint
    glutInit(addr(cmdCount), addr(cmdLine))
  Run

  It looks to me as if that is not used but the original is called without any parameters?

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• WM_USR (orginal) [2015-02-25T02:11:17+01:00] view original

  Great thanks OderWat, that worked.

  I have just discovered Nim and am very impressed.

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