Method _captureBackBuffer

Engine/source/gfx/gl/screenshotGL.cpp:29–46

Note if MSAA is ever enabled this will need fixing

//Note if MSAA is ever enabled this will need fixing
GBitmap* ScreenShotGL::_captureBackBuffer()
{
   glPixelStorei(GL_PACK_ALIGNMENT, 1);
   glReadBuffer(GL_BACK);

   Point2I size = GFX->getViewport().extent;
   U8* pixels = new U8[size.x * size.y * 4];
   glReadPixels(0, 0, size.x, size.y, GL_RGB, GL_UNSIGNED_BYTE, pixels);

   GBitmap* bitmap = new GBitmap(size.x, size.y);

   for (U32 y = 0; y < (U32)size.y; y++)
      dMemcpy(bitmap->getAddress(0, y), pixels + y * size.x * 3, U32(size.x * 3));

   delete[] pixels;

   return bitmap;
}