On 05/12/2010 05:57 PM, Stefano Stabellini wrote:
I guess even a src blt pitch of 0 could be useful there, however in practice I think the only rop function that was written with this case in mind has:dstpitch -= bltwidth; srcpitch -= bltwidth; if (dstpitch< 0 || srcpitch< 0) { /* is 0 valid? srcpitch == 0 could be useful */ return; }
Note that here srcpitch == 0 is actually srcpitch == bltwidth, which _is_ obviously useful.
The "real" srcpitch == 0 case would result in srcpitch == -bltwidth, and it is actually quite useful if you want to stretch a Nx1 bitmap to NxN.
Paolo
