Wonderbrush crashing when max zooming large image

[humdinger]

This is on vmware (1gb RAM), hrev28625.

When working with a large image (in my case 2480 x 3508), Haiku's crashing when I reach maximal zooming level (x3200). ActivityMonitor reports around 280mb used memory. See attached serial-log.txt. Nope... can't attach a file... It's quite short though:

vm_page_fault: vm_soft_fault returned error 'Bad address' on fault at 0x70555000, ip 0x2a8b47, write 1, user 1, thread 0xb0
vm_page_fault: thread "w:173:WonderBrush | Haiku-Alpha" (176) in team "app_server" (49) tried to write address 0x70555000, ip 0x2a8b47 ("app_server_seg0ro" +0xa8b47)
stack trace:
  0x002a8846 (app_server_seg0ro + 0xa8846)
  0x002a76bb (app_server_seg0ro + 0xa76bb)
  0x00296b85 (app_server_seg0ro + 0x96b85)
  0x00281d30 (app_server_seg0ro + 0x81d30)
  0x002813a6 (app_server_seg0ro + 0x813a6)
  0x0027f0dd (app_server_seg0ro + 0x7f0dd)
  0x00285106 (app_server_seg0ro + 0x85106)
  0x002675c0 (app_server_seg0ro + 0x675c0)
  0x006f49b8 (libroot.so_seg0ro + 0x259b8)
  0x70594fec (w:173:WonderBrush_176_stack + 0x3ffec)
vm_soft_fault: va 0x0 not covered by area in address space
vm_page_fault: vm_soft_fault returned error 'Bad address' on fault at 0x0, ip 0x800cda9c, write 0, user 0, thread 0xb0
debug_server: Thread 176 entered the debugger: Segment violation
stack trace, current PC 0x2a8b47  _DrawBitmapNearestNeighborCopy32__C7PainterRQ23aggt13row_ptr_cache1ZUcddddG5BRect + 0x1bb:
  (0x705948dc)  0x2a8846  _DrawBitmap__C7PainterRQ23aggt13row_ptr_cache1ZUc11color_spaceG5BRectN23Ul + 0x992
  (0x705949ac)  0x2a76bb  DrawBitmap__C7PainterPC12ServerBitmapG5BRectT2Ul + 0x1eb
  (0x70594a5c)  0x296b85  DrawBitmap__13DrawingEngineP12ServerBitmapRC5BRectT2Ul + 0x145
  (0x70594aec)  0x281d30  _DispatchViewDrawingMessage__12ServerWindowlRQ28BPrivate12LinkReceiver + 0x738
  (0x70594c4c)  0x2813a6  _DispatchViewMessage__12ServerWindowlRQ28BPrivate12LinkReceiver + 0x220e
  (0x70594dec)  0x27f0dd  _DispatchMessage__12ServerWindowlRQ28BPrivate12LinkReceiver + 0x1181
  (0x70594f0c)  0x285106  _MessageLooper__12ServerWindow + 0x282
  (0x70594f7c)  0x2675c0  _message_thread__13MessageLooperPv + 0x28
  (0x70594fac)  0x6f49b8  thread_entry + 0x20

It's probably not Wonderbrush's fault. Please reassign to the appropriate component.

[stippi]

Ah yeah, I think I am seeing a flaw in my upscaling filters... it's probably eating all the stack to store the filter indexes. It should limit them to the screen size, or better yet, the bounding box of the clipping region...

[stippi]

Fixed in hrev29387.

[stippi]

Darn. I mean't hrev29397.