[wined3d] Converting Wined3d to use WGL instead of GLX

Aric Cyr Aric.Cyr at gmail.com
Thu Dec 15 20:08:31 CST 2005

Aric Cyr <Aric.Cyr <at> gmail.com> writes:

> I debugged it more last night and I found the offending call.  If I comment 
> out
> just that one (probably unneeded from what I can tell) function everything 
> works
> great.

Replying to myself again...

Okay so I think this whole problem might turn out to be a compiler bug.  I
reverted all changes to drawprim.c I made to track down this bug, then I tried a
something different.  Since I was crashing in glDrawArrays() I was thinking that
the vertex array or normal array was not properly set for some reason.  Out of
the 4 demos I test with, one of them is unaffected by my bug, and running with
WINEDEBUG=d3d_draw I can see that the glDrawArrays path is not taken.  So that
narrowed the problem down to the glDrawArrays code path for me.  In checking the
glVertexPointer function call I changed the VTRACE message from

        /* Note dwType == float3 or float4 == 2 or 3 */
        VTRACE(("glVertexPointer(%ld, GL_FLOAT, %ld, %p)\n",
                sd->u.s.position.dwType + 1,


        /* Note dwType == float3 or float4 == 2 or 3 */
        VTRACE(("glVertexPointer(%u, %u, %ld, %p)\n",

After making this change everything started working... this is silly though
since VTRACE is just a macro around TRACE().  So either there is stack
corruption somewhere or the compiler is wonky.  Since it is gcc-4.0.2 I'm
guessing the compiler is buggy (Ubuntu breezy's standard gcc is 4.0.2 now). 
I'll try recompiling with gcc-3.3 later and see if the original code is working.

Still interested in any comments though :)

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