[Windows & DMD] No callstack when crash with Access violation reading location 0x00000000

[Xavier Bigand]

Le 12/01/2014 18:01, Benjamin Thaut a écrit :
> Am 12.01.2014 17:18, schrieb Xavier Bigand:
>> Le 12/01/2014 11:16, Benjamin Thaut a écrit :
>>> Am 12.01.2014 00:47, schrieb Xavier Bigand:
>>>> I didn't know this menu settings, but activate Access Violation don't
>>>> change anything.
>>>>
>>>
>>> It seems that your crash happens inside the OpenGL part of the graphics
>>> driver. It is caused by
>>> DQuick\src\dquick\renderer3D\openGL\mesh.d line 125
>>> I assume that you setup a few OpenGL parameters invalid and thus the
>>> driver reads from a null pointer.
>>>
>>> I found it by single stepping. I started the application, then set the
>>> breakpoint like shown below and single steppt into the draw() method.
>>>
>>> debug
>>> {
>>>      if (mRebuildDebugMeshes)
>>>          updateDebugMesh(); // put breakpoint here
>>>      mDebugMesh.draw();
>>>      if ((implicitWidth != float.nan && implicitHeight != float.nan)
>>>          && (implicitWidth != mSize.x && implicitHeight != mSize.y))
>>>          mDebugImplicitMesh.draw();
>>> }
>>>
>>> Have fun debugging ;-)
>>>
>>> Kind Regards
>>> Benjamin Thaut
>>
>> Thank for your support and your time
>>
>> I already tried to debug opengl with gdebugger is used to find those
>> kind of issues. But it doesn't seems working fine with D binaries.
>
> I higly recommend using either glIntercept
> (http://code.google.com/p/glintercept/) or glslDevil
> (http://www.vis.uni-stuttgart.de/glsldevil/) to debug OpenGL applications.
> If you have a nvidia card you could also use nvidia nsight to debug your
> application:
> https://developer.nvidia.com/nvidia-nsight-visual-studio-edition
>
> My guess would be that either your vertex buffer or index buffer is no
> longer valid, thus gets not bound, and as a result the graphics driver
> reads from client memory at address null.
>
> Kind Regards
> Benjamin Thaut

I took a look to buffers manually just before the glDrawElements call, 
and all values seems good. I also check if any glDeleteBuffers and 
glDeleteShader,...  was called before the glDrawElements.

I need find some more time to test with glIntercept or nvidia nsight