Hi All, I have a somewhat complicated speed issue I've been trying to resolve in a standalone application (this problem is not observed in IDE / stack mode). I have a multi-card stack which begins with what could be considered a "launch window" that gives the user the option to go to various other parts of the application. When the user clicks on the desired icon, the stack goes to a different card depending on what they clicked. Now my issue is the FIRST time the user ever goes to another card, there is a significant delay (up to 7+ seconds on slower P3 machines). Also the memory useage goes from about 11MB to 22MB the first time another section in the app is accessed.
Now here is the odd part, after the user has gone to another card, everything runs blazingly fast after that, even if they return to the "launch window" and load another different section of the application. It's only the first time a card switch occurs that this significant slowdown can be observed. With some poking around I've determined the source of the slowdown, which seems to be the screenNoPixmaps property. What I assume is going on here is the first time another card is accessed, the application creates a new buffer for the card and writes all the graphics to that before displaying. This agrees with the memory use getting a significant boost as well. After the buffer has been created everything runs at full speed. So apparently *creating* the buffer is where the performance hit is. Turning off screenNoPixmaps is also undesireable because this will cause refresh flicker occassionaly while using the application, rather than always having nice smooth transitions there will be some "scanlines" visible during some refreshes. It does however run at "full" speed all the time, even when the first section is accessed. The memory useage also stays at something around 11MB, which further proves my theory on this. What I would like to do (if at all possible) is force the secondary buffer to be created immediately upon program launch, ideally during the splash screen phase before the user can see any actual parts of the GUI. Is there any way to force the creation of this buffer ahead of time? And if not is there any way to maintain a constant speed without having the drawback of "scanlines"? -Levi Kendall _______________________________________________ use-revolution mailing list [email protected] Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-revolution
