[GRASS-dev] still togl problems in NVIZ for volume

[Markus Neteler]

Hi,

NVIZ volume is still crashing, apparently this was
introduced with the TOGL update or a related change
(since it worked earlier):

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 182934096192 (LWP 10174)]
0x0000002a9559c3c7 in gvl_read_char (pos=59, data=0x0) at gvl_calc.c:603
603             return data[pos];
(gdb) bt full
#0  0x0000002a9559c3c7 in gvl_read_char (pos=59, data=0x0) at gvl_calc.c:603
No locals.
#1  0x0000002a9559dbe9 in gvld_isosurf (gvl=0x62ac90) at gvld.c:248
        tx = 0.00224719103
        ty = 0.00224719103
        tz = 0.0224719103
        cols = 890
        rows = 510
        depths = 6
        x = 59
        y = 0
        z = 0
        i = 1
        iv = 42
        xc = 29500
        yc = 254500
        zc = 0
        xres = 500
        yres = 500
        zres = 500
        j = -1788023744
        p = 0
        num = 17760
        c_ndx = 0
        crnt_ev = -1788023744
        n = {0, 0, -1.05018851e-20}
        pt = {-4.78461888e-26, 5.88545355e-44, 1.66341751e-38, 0}
        n_i = 1
        check_color = (int *) 0xb696b0
        check_transp = (int *) 0xb679f0
        check_material = (int *) 0xb4f6d0
        check_emis = (int *) 0x9af9e0
        check_shin = (int *) 0x9adc70
        kem = (float *) 0xb57370
        ksh = (float *) 0xb67c80
        pkem = 1
        pksh = 1
        ktrans = (unsigned int *) 0xb62360
        curcolor = (unsigned int *) 0xb1b400
        pktransp = 0
        pos = (int *) 0xb4c160
        nz = (int *) 0x5b66a0
        e_dl = (int *) 0xb69b30
        tmp_pos = 42
        edge_pos = {-994655516, -994655500, -994655412, -994655428, 0, 0, 536870912, 1082638125,
  536870912, 1082638125, -445205505, 59}
        modelMatrix = {0.0014787534018978477, -0.00034826830960810184, 0.0016558578936383128, 0,
  0.0016920862253755331, 0.00030435970984399319, -0.0014470925088971853, 0, 0, 0.021990776062011719,
  0.0046252096071839333, 0, -544.1253662109375, 14.187896728515625, -2496.742919921875, 1}
        projMatrix = {3.794135570526123, 0, 0, 0, 0, 2.7474775314331055, 0, 0, 0, 0,
  -1.0020020008087158, -1, 0, 0, -20.02001953125, 0}
        viewport = {0, 0, 400, 552}
        window = {1567, -1015, -1015, 1415}
        isosurf = (geovol_isosurf *) 0xb52150
#2  0x0000002a9559d143 in gvld_vol (gvl=0x62ac90) at gvld.c:38
No locals.
#3  0x0000002a95594c90 in GVL_draw_vol (vid=81721) at GVL2.c:287
        gvl = (geovol *) 0x62ac90
#4  0x00000000004246c1 in vol_draw_all_cmd (data=0x534aa0, interp=0x53e3a0, argc=1, argv=0x7fbfffe880)
    at togl_flythrough.c:761
        i = 0
        nvols = 1
        vol_list = (int *) 0x5ef840
#5  0x00000000004248cc in Ndraw_all_together_cmd (data=0x534aa0, interp=0x53e3a0, argc=1,
    argv=0x7fbfffe880) at togl_flythrough.c:807
        buf_surf = 0x595a80 "1"
        buf_vect = 0x595a80 "1"
        buf_site = 0x595a80 "1"
        buf_vol = 0x595a80 "1"
        buf_north_arrow = 0x54c750 "0"
        arrow_x = 0xab31f0 "999"
        buf_label = 0x54c750 "0"
        buf_legend = 0x54c750 "0"
        buf_fringe = 0x54c750 "0"
        buf_is_drawing = 0x5ef840 "9?\001"
#6  0x0000002a96c1bc5b in TclInvokeStringCommand () from /usr/lib64/libtcl8.4.so
No symbol table info available.
#7  0x0000002a96c1d4c2 in TclEvalObjvInternal () from /usr/lib64/libtcl8.4.so
No symbol table info available.
#8  0x0000002a96c1ea5d in Tcl_EvalEx () from /usr/lib64/libtcl8.4.so
No symbol table info available.
#9  0x0000002a96c1ee05 in Tcl_Eval () from /usr/lib64/libtcl8.4.so
No symbol table info available.
#10 0x000000000042128e in display_cb (togl=0x6dfb00) at togl_cb.c:73
No locals.
#11 0x000000000041d8ab in Togl_Render (clientData=0x6dfb00) at togl.c:1163
        togl = (Togl *) 0x6dfb00
#12 0x0000002a96c73e2b in TclServiceIdle () from /usr/lib64/libtcl8.4.so
No symbol table info available.
#13 0x0000002a96c65182 in Tcl_DoOneEvent () from /usr/lib64/libtcl8.4.so
No symbol table info available.
#14 0x000000381c43b138 in Tk_MainLoop () from /usr/lib64/libtk8.4.so
No symbol table info available.
#15 0x000000381c4463c4 in Tk_MainEx () from /usr/lib64/libtk8.4.so
No symbol table info available.
#16 0x000000000041d155 in main (argc=4, argv=0x7fbffff068) at nvizMain.c:50
        i = 0

I used the Slovakia3d dataset and launched it as
nviz el=dem500 vol=precip3d.500z50

The error appears randomly, sometimes at startup,
or when I add a new isosurface or the second or...

Any ideas?

Markus