Is the following a "safe" operation: IDirectFBSurface *surfaceOne = ...; IDirectFBSurface *surfaceTwo = ...; int bpl; void *mem; surfaceOne->Lock(surfaceOne, DSLF_WRITE, &mem, &bpl); // change the pixels of mem using something other interface surfaceTwo->Blit(surfaceTwo, surfaceOne, 0, 0, 0);
Do I need to call surfaceOne->Unlock(surfaceOne); before I blit surfaceOne onto surfaceTwo? If the answer is yes, what if I did this instead: IDirectFBSurface *surfaceOne = ...; IDirectFBSurface *surfaceTwo = ...; IDirectFBSurface *sub; surfaceOne->GetSubSurface(surfaceOne, 0, &sub); int bpl; void *mem; sub->Lock(sub, DSLF_WRITE, &mem, &bpl); // change the pixels of mem using something other interface surfaceTwo->Blit(surfaceTwo, surfaceOne, 0, 0, 0); Do I need to call sub->Unlock(sub); before I blit surfaceOne onto surfaceTwo? regards -- Anders Bakken _______________________________________________ directfb-dev mailing list directfb-dev@directfb.org http://mail.directfb.org/cgi-bin/mailman/listinfo/directfb-dev
