lost device again

no-reply@allegro.cc (allandy) — Wed, 06 Mar 2013 15:07:04 +0000

I have to continue this problem:
https://www.allegro.cc/forums/thread/611811/974446#target

I haven't looked yet into the 5.1.5-branch, but tested Allegro 5.0.9 with my
problem. So, for your information:

With Allegro 5.0.9 a combination like this handles the problem in most cases:

#SelectExpand
 1  ALLEGRO_LOCKED_REGION* ar;
 2
 3  while (al_is_d3d_device_lost(al5_display));
 4
 5  ar = al_lock_bitmap(al_get_backbuffer(al5_display), ALLEGRO_PIXEL_FORMAT_ANY, 0);

...but there is still a little timing glitch that may slip through to:

#SelectExpand
 1      ALLEGRO_DISPLAY_D3D *d3d_disp = (ALLEGRO_DISPLAY_D3D *)bitmap->display;
 2      if (d3d_disp->render_target->LockRect(&d3d_bmp->locked_rect, &rect, Flags) != D3D_OK) {
 3         ALLEGRO_ERROR("LockRect failed in d3d_lock_region.\n");
 4
 5line 769 in d3d_bmp.cpp

and throws an exception.

no-reply@allegro.cc (Peter Wang) — Thu, 07 Mar 2013 03:40:59 +0000

Can you provide a test case?

Also, use proper code tags.

no-reply@allegro.cc (allandy) — Thu, 07 Mar 2013 15:42:42 +0000

http://www.akluwi.de/al/al_lcktest.zip

This is even more mysterious.
The device exists until the routine 'stretchblit' is reached - then it's lost...
It's cutted and reduced from the original program which uses to run fine.
I'm really confused at the moment.