Hello

In the OS/2 port of Squeak, I used a game-oriented API (DIVE) for transferring the pixels to the display. It uses hardware acceleration to transfer from a buffer that is allocated in video ram (if possible). So, the Squeak VM allocates one of such intermediate buffers, and transfer the pixels to it, doing the bit-endian conversion. This should be as optimized as posible. The pixels are then copied from the intermediate buffer to the actual display memory by the video card acceleration hardware, almost instantly.

So, only one bit reversal is necessary. The results are quite satisfactory. The problem is that if you don't have enought video memory for the intermediate buffer, it is allocated from main memory, using it up, and slowing the display update.

If you have such a game-oriented display routine for BeOS, give it a try.

Juan Manuel Vuletich SW Export IGS- IBM Argentina Phone Nbr : 54-1-313-0014 ext. 5207 Tie Line : 840-5207 e-mail: vuletich@ar.ibm.com