[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.dwStride,
sd->u.s.position.dwType + 1,
sd->u.s.position.lpData));
to
/* Note dwType == float3 or float4 == 2 or 3 */
VTRACE(("glVertexPointer(%u, %u, %ld, %p)\n",
WINED3D_ATR_SIZE(position),
WINED3D_ATR_GLTYPE(position),
sd->u.s.position.dwStride,
sd->u.s.position.lpData));
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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