Can you post the contents of your modified grSstWinOpen() so that I can see exactly where this prints?

These warnings can possibly be fixed by adding const to prototype of void GLErro( char *Funcao ). Change it to:

1void GLErro( const char *Funcao )

in GLutil.cpp and GlOgl.h.

starting from line 241 (I may have overdid the glidemsg thing, but I put one in wherever I thought I could add one...)

1grSstWinOpen(   FxU hwnd,
2                GrScreenResolution_t res,
3                GrScreenRefresh_t ref,
4                GrColorFormat_t cformat,
5                GrOriginLocation_t org_loc,
6                int num_buffers,
7                int num_aux_buffers )
8{
9    GlideMsg( "grSstWinOpen( %d, %d, %d, %d, %d, %d, %d )\n",
10        hwnd, res, ref, cformat, org_loc, num_buffers, num_aux_buffers );
11    if ( OpenGL.WinOpen )
12    {
13        grSstWinClose( ); GlideMsg("1"); 
14    }
15
16    if (!InterpretScreenResolution(res, Glide.WindowWidth, Glide.WindowHeight))
17
18    {
19#ifdef OGL_DEBUG
20        Error( "grSstWinOpen: res = GR_RESOLUTION_NONE\n" );
21         GlideMsg("2");
22#endif
23        return FXFALSE;
24         GlideMsg("3");
25    }
26
27    if (!InterpretScreenRefresh(ref, OpenGL.Refresh))
28
29    {
30#ifdef OGL_DEBUG
31        Error( "grSstWinOpen: Refresh Incorrect\n" );
32         GlideMsg("4");
33#endif
34        return FXFALSE;
35         GlideMsg("5");
36    }
37
38    OpenGL.WindowWidth  = Glide.WindowWidth;
39     GlideMsg("6");
40    OpenGL.WindowHeight = Glide.WindowHeight;
41     GlideMsg("7");
42    Glide.WindowTotalPixels = Glide.WindowWidth * Glide.WindowHeight;
43     GlideMsg("8");
44
45    OpenGL.WaitSignal = (int)( 1000 / OpenGL.Refresh );
46     GlideMsg("9");
47
48    // Initing OpenGL Window
49    if ( !InitWindow( hwnd ) )
50    {
51        return FXFALSE;
52         GlideMsg("10");
53    }
54
55    Glide.State.ColorFormat = cformat;
56     GlideMsg("11");
57    Glide.NumBuffers        = num_buffers;
58     GlideMsg("12");
59    Glide.AuxBuffers        = num_aux_buffers;
60     GlideMsg("13");

61
62#ifdef OGL_DONE
63    GlideMsg( "grSstWinOpen( %d, %d, %d, %d, %d, %d, %d )\n",
64        hwnd, res, ref, cformat, org_loc, num_buffers, num_aux_buffers );
65#endif

maybe move he messages before the return FXFALSE;

maybe move he messages before the return FXFALSE;

Doesn't change the output, still only 6,7,8,9...

These warnings can possibly be fixed by adding const to prototype of void GLErro( char *Funcao ).

yep, that fixes those warnings.

so if you add a msg right to the top of InitWindow() (before InitialiseOpenGLWindow call) in Glide.cpp it doesn't print? That would suggest a stack corruption somewhere and make remote debugging much harder 😀

so if you add a msg right to the top of InitWindow() (before InitialiseOpenGLWindow call) in Glide.cpp it doesn't print?

THAT in glide.cpp gets printed! and if I add another message after
InitialiseOpenGLWindow( hWnd, 0, 0, OpenGL.WindowWidth, OpenGL.WindowHeight );
that gets printed as well...

So it's the glGetString() that crashes?
There's a testgl.c in SDL sources. Perhaps you could try compiling and running that and see if it works?

testgl runs fine, a very fast (5318 FPS) spinning colored cube.

I'm going to be away from tomorrow until next friday, so that you know why I'll be silent for the next few days in this thread. I'll still be able to log on here but I'm not going to be able to test anything.

Another thing I forgot to mention and what might be of importance, my SDL is the SDL 1.2.14 prerelease, since 1.2.13 has many problems on OS X 10.6.1

Hm. Really strange...
I've checked out 1.2.14, I don't see any differences that should be of concern. And as I understand, 1.2.14 is required for 10.6.1.

Can you try to confirm it is the glGetString that is crashing. Perhaps you can put:

1	GlideMsg( "Vendor     : %s\n", glGetString( GL_VENDOR ) );
2	GlideMsg( "Renderer   : %s\n", glGetString( GL_RENDERER ) );
3	GlideMsg( "Version    : %s\n", glGetString( GL_VERSION ) );
4	GlideMsg( "Extensions : %s\n", glGetString( GL_EXTENSIONS ) );

just after InitialiseOpenGLWindow() and another MSG just before these to see if it gets this far.

the one msg before that will be printed but those will not.

the one msg before that will be printed but those will not.

Please post the respective part of that functions, as it should look like
bool InitWindow(whatever) {
InitSomething();
[here the GetStrings from gulikoza]
[here the strcmp with the GetString]

Just add some more logging right after the InitSomething function to isolate
stuff, like use
char* test = glGetString( GL_RENDERER );
with logging before/after that to see if it's glGetString itself that crashes etc.

I'll post those, when I'm back home. Thanks

1bool InitWindow( FxU hWnd )
2{
3    GlideMsg( "glide.cpp #1");
4    InitialiseOpenGLWindow( hWnd, 0, 0,  OpenGL.WindowWidth, OpenGL.WindowHeight );
5   GlideMsg( "glide.cpp #2" );
6   GlideMsg( "Vendor     : %s\n", glGetString( GL_VENDOR ) );
7   GlideMsg( "Renderer   : %s\n", glGetString( GL_RENDERER ) );
8   GlideMsg( "Version    : %s\n", glGetString( GL_VERSION ) );
9   GlideMsg( "Extensions : %s\n", glGetString( GL_EXTENSIONS ) );

"glide.cpp #1" and "glide.cpp #2" are printed in the log file.

Don't know where else to put some logging...

But I'm back in testing business 😀

Yeah, I've been thinking about this for a week too 😀
Those functions should not be failing, unless opengl failed to initialize properly. But if that were the case, SDL_SetVideoMode() should fail. The InitialiseOpenGLWindow() should probably be rewritten to return false if open window was unsuccessful so that grSstWinOpen() can fail and return failure to the glide application. I assume there are no "Video mode set failed" errors in the log?
Other than that, I don't have any ideas. SDL OpenGL init is pretty simple and should work (as demonstrated by dosbox and the testgl program)...

hmm, no such error in the log.
It was a bit unclear to me to what videomode I should set Dosbox, but it fails anyway in surface, overlay and opengl...

it shouldn't matter, but I was just about to suggest setting it to opengl. opengl should be initialized by dosbox then, openglide should just change the resolution....very weird it would fail at that...

There is another possibility of course. That this is indeed some problem with my dosbox glide patch.
Attached is the simplest possible glide program. It will initialize glide, clear screen to blue and exit. I have no idea if it will compile 😀

1gcc bc.c -I/opt/local/include -I /usr/local/include/openglide/
2In file included from /usr/local/include/openglide/sdk2_glide.h:36,
3                 from test.h:20,
4                 from bc.c:3:
5/usr/local/include/openglide/sdk2_3dfx.h:100:4: warning: #warning define FX_ENTRY & FX_CALL for your compiler
6Undefined symbols:
7  "_grGlideInit", referenced from:
8      _main in cc6xwvT0.o
9  "_getch", referenced from:
10      _main in cc6xwvT0.o
11      _main in cc6xwvT0.o
12  "_grBufferSwap", referenced from:
13      _runTest in cc6xwvT0.o
14  "_grSstQueryBoards", referenced from:
15      _main in cc6xwvT0.o
16  "_grSstWinOpen", referenced from:
17      _main in cc6xwvT0.o
18  "_grBufferClear", referenced from:
19      _runTest in cc6xwvT0.o
20  "_grSstSelect", referenced from:
21      _main in cc6xwvT0.o
22  "_grGlideShutdown", referenced from:
23      _main in cc6xwvT0.o
24ld: symbol(s) not found
25collect2: ld returned 1 exit status
26imac:bufferclear dominus$ gcc
27i686-apple-darwin10-gcc-4.2.1: no input files

I hope I used the correct command to compile this (I renamed the c file to bc.c to type it faster...)

you probably need some -lglide or so

any ideas on that? -I /usr/local/include/openglide/ is enough to build Dosbox with glide support.