Problem showing raw images

[wkit23]

Hi, I'm new to Qt4. I'm currentl using Qt as part of my project, but I'm facing problem using it. My project consist of reading a raw image, and then display it.

Since my raw image is in short byte array, I can't seems to show the image correctly using QImage. However, I manage to get the image to output correctly with OpenGL glDrawPixels, but the process is kinda sluggish and eats quite a lot of resources. Since I just wanna show the image, I was searching for a better way.

Here's my OpenGL code.

void pktGLWidget::paintGL()
{
   glClear(GL_COLOR_BUFFER_BIT);
   glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
   glDrawPixels(imgWidth, imgHeight, GL_LUMINANCE, GL_BYTE, glBuffer);
   glFlush();
}

void pktGLWidget::paintGL()
{
   glClear(GL_COLOR_BUFFER_BIT);
   glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
   glDrawPixels(imgWidth, imgHeight, GL_LUMINANCE, GL_BYTE, glBuffer);
   glFlush();
}

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And here's my QImage code, which can't seems to work properly.

void pktQImage2D::processBuffer()
{
  m_Image = QImage((uchar *) pixelData, imgWidth, imgHeight, QImage::Format_Mono);
}

void pktQImage2D::processBuffer()
{
  m_Image = QImage((uchar *) pixelData, imgWidth, imgHeight, QImage::Format_Mono);
}

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