Which DirectFB version are you using? The buffer pool negotiation has changed between 1.2 and 1.3, they are binary incompatible. You can try to rebuild everything, and watch if you have any warnings during compilation.
hth Niels Nikita Egorov wrote: > Hi, > I'd found such strange behavior of the dfb_surface_pools_negotiate() > function. In branch 1.0.0 my code was working fine. > > My source: > DFBSurfaceDescription desc; > memset(&desc,0,sizeof(DFBSurfaceDescription)); > desc.flags = > (DSDESC_CAPS|DSDESC_WIDTH|DSDESC_HEIGHT|DSDESC_PIXELFORMAT|DSDESC_PREALLOCATED; > desc.caps = DSCAPS_SYSTEMONLY; > desc.pixelformat = pix_format; > desc.height = height; > desc.width = width; > > desc.preallocated[0].data = src; > desc.preallocated[0].pitch = bytes_per_line; > > The surface is created without any problems. > > Then I invoke the Blit() and it fails when > dfb_surface_pools_negotiate() returns the error UNSUPPORTED for source > surface. > > Call stack: > dfb_surface_pools_negotiate (buffer=0x100b2f88, access=CSAF_CPU_READ, > ret_pools=0x7fd8b7c0, max_pools=4, ret_num=0x7fd8b7f4) > at surface_pool.c:313 > #1 0x0ff68ec4 in dfb_surface_pools_allocate (buffer=0x100b2f88, > access=CSAF_CPU_READ, ret_allocation=0x7fd8b83c) at surface_pool.c:462 > #2 0x0ff63b08 in dfb_surface_buffer_lock (buffer=0x100b2f88, > access=CSAF_CPU_READ, lock=0x100ae920) at surface_buffer.c:192 > #3 0x0ff62e38 in dfb_surface_lock_buffer (surface=0x100b2d80, > role=CSBR_FRONT, access=CSAF_CPU_READ, ret_lock=0x100ae920) > at surface.c:546 > #4 0x0ff379dc in gAcquire (state=0x100ae850, accel=DFXL_BLIT) > at generic.c:6787 > #5 0x0ff4b6d8 in dfb_gfxcard_blit (rect=0x7fd8ba20, dx=0, dy=0, > state=0x100ae850) at gfxcard.c:1717 > #6 0x0fedd170 in IDirectFBSurface_Blit (thiz=0x100adfb0, source=0x100b2fc8, > sr=0x7fd8baac, dx=0, dy=0) at idirectfbsurface.c:1600 > > I have not enough experience to dig deeper. I'm afraid it will take > too much time.:( > > -- .------------------------------------------. | DirectFB - Hardware accelerated graphics | | http://www.directfb.org/ | "------------------------------------------" _______________________________________________ directfb-dev mailing list directfb-dev@directfb.org http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-dev
