Unhandled Exception using QGLFunctions on Release mode only



  • Hello all,

    I'm having some trouble while compiling my project on Windows 7 using Qt 4.8 on Release mode. Everything works fine on Debug, but on Release I get an Unhandled Exception: 0xC0000005: Access violation.
    I narrowed it down to the line where this happens, which is when I generate my Pixel Buffers.
    My first guess would be wrong DLLs loading, but I checked the executable with Dependency Walker and every DLL loaded is correct.

    Here goes some of my code:

    @
    class CameraView : public QGLWidget, protected QGLFunctions;
    void CameraView::initializeGL()
    {

    initializeGLFunctions(this->context());

    glGenBuffers(1, &pbo_); //<<<<< This is where I get the unhandled exception on Release mode
    glBindBuffer(QGLBuffer::PixelUnpackBuffer, pbo_);
    glBufferData(QGLBuffer::PixelUnpackBuffer, 3 * sizeof(BYTE) * image_width_ * image_height_, NULL, GL_STREAM_DRAW);
    @

    Again, this works great on debug. Do you have any clue of why this is happening on Release only?

    Thanks in advance,

    Theo


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