I examined the patch before you sent this mail and I have been discussing a few possible solutions. I think the best solution would be to draw the text on a texture in advance and then you can in the render phase just draw textures in 3D mode. Given that most text on billboards doesn't change every frame this should give a considerable speedup.
Greetings, On Wed, Sep 17, 2008 at 1:58 PM, Pablo Martin <[EMAIL PROTECTED]> wrote: > Ill clarify about the cel patch (and i think the info is good to know > for all cs users too). > > I didn't commit it yet, because the patch changes billboard-text drawing > order in an incorrect way (explanation below). It is not a problem with > no billboard overlap, but it is not 100% correct. > > The speed problem comes from the way 3d and 2d is used, basically, the > code is now calling BeginDraw(3D), BeginDraw(2D) and then BeginDraw(3D) > again for every billboard. Changing this to just switch once for all > billboards makes it a lot faster, ie: > > 1- call begindraw(3d) > 2- draw all images. > 3- call begindraw(2d) > 4- draw all text > 5- call begindraw(3d) > > The problem with this, is text is now always on front, while before it > would be ensured billboards on top would overwrite lower ones completely. > > The patch was a "concept proof" (trying to find where the speed problem > was) which is good for Piotr for now, as it helps him to work, but to be > commited i would like to change all code to draw using 2d calls, thus > avoiding the context switch (based on what the code does, it seems > possible, but some of the maths have to be changed), and keeping the > drawing order "correct". Maybe using some kind of clipping would be even > better. > > I'd like to fix this at this moment, but i had some travelling and other > things to do in the middle. If someone else wants to finish this, > though, feel free :) > > In general, this also means we should investigate and minimize 2d/3d > switches, as at least in some systems slows down the app greatly. > > Greetings! > > Pablo > > Jorrit Tyberghein escribió: >> Hmm, caedes has commit access to CEL. If this gives a speedup to billboards >> then why didn't he commit it? In other words: what is the catch? >> >> Greetings, >> >> On Wed, Sep 17, 2008 at 10:19 AM, Piotr Podgórski >> <[EMAIL PROTECTED]> wrote: >> >>> Hey Jorrit, >>> >>> I misunderstood, sorry. Yes, that patch is only CEL related. What it >>> fixes is the framedrop when using CEL billboards - I just didn't >>> notice Jim's problem was in plain CS. Next time I'll make sure to wake >>> up before posting something on the net ;D. Again, sorry for the >>> confusion guys. >>> >>> Greets >>> >>> 2008/9/17 Jorrit Tyberghein <[EMAIL PROTECTED]>: >>> >>>> Piotr, in Jim's first mail he told us he copied code from walktest to >>>> draw the pixmaps. >>>> So I don't think he is using CEL. Also I fail to see the relevance of >>>> that patch? What >>>> does your patch fix? >>>> >>>> Greetings, >>>> >>>> On Wed, Sep 17, 2008 at 9:23 AM, Piotr Podgórski >>>> <[EMAIL PROTECTED]> wrote: >>>> >>>>> Hi there, >>>>> >>>>> Jim, are you using CS/CEL 1.4? If so, probably you have the same >>>>> problem that I had. Caedes wrote a patch to fix that, but I think the >>>>> changes from it were only commit to trunk and not 1.4. I append the >>>>> patch to this mail. Hope it helps. >>>>> >>>>> Cheers >>>>> >>>>> 2008/9/17 Jorrit Tyberghein <[EMAIL PROTECTED]>: >>>>> >>>>>> What kind of image is it that you're drawing on the screen? Is it a >>>>>> power of two? >>>>>> Does it contain transparency? I think you should avoid a big single >>>>>> screen-size >>>>>> image that has transparency. Better to work with smaller HUD images >>>>>> instead. >>>>>> >>>>>> >>>>>> Greetings, >>>>>> >>>>>> On Wed, Sep 17, 2008 at 6:33 AM, Jim Sager <[EMAIL PROTECTED]> wrote: >>>>>> >>>>>>> I copy/pasted the code from Walktest to show pixmaps. If I draw on the >>>>>>> entire screen every frame, it slows things down horribly. >>>>>>> >>>>>>> If you want an example, try: >>>>>>> http://rapidshare.com/files/145329460/xyzim.zip.html >>>>>>> >>>>>>> Hit f6 a few times and as the windows pop up, the Frames Per Second drop >>>>>>> sharply. >>>>>>> >>>>>>> I want to use a HUD, but I don't want to lose noticeable amounts of >>>>>>> Frames >>>>>>> Per Second. >>>>>>> >>>>>>> I also have a mainly 2d program that I have on the back burner. I'd >>>>>>> really >>>>>>> like to use CRYSTALSPACE with it because I am familiar with the library. >>>>>>> >>>>>>> Thank you for reading, >>>>>>> Jim >>>>>>> >>>>>>> ------------------------------------------------------------------------- >>>>>>> This SF.Net email is sponsored by the Moblin Your Move Developer's >>>>>>> challenge >>>>>>> Build the coolest Linux based applications with Moblin SDK & win great >>>>>>> prizes >>>>>>> Grand prize is a trip for two to an Open Source event anywhere in the >>>>>>> world >>>>>>> http://moblin-contest.org/redirect.php?banner_id=100&url=/ >>>>>>> _______________________________________________ >>>>>>> Crystal-main mailing list >>>>>>> [email protected] >>>>>>> https://lists.sourceforge.net/lists/listinfo/crystal-main >>>>>>> Unsubscribe: >>>>>>> mailto:[EMAIL PROTECTED] >>>>>>> >>>>>>> >>>>>>> >>>>>> >>>>>> -- >>>>>> Project Manager of Crystal Space (http://www.crystalspace3d.org) >>>>>> and CEL (http://cel.crystalspace3d.org) >>>>>> Support Crystal Space. Donate at >>>>>> https://sourceforge.net/donate/index.php?group_id=649 >>>>>> Visit my town at http://waldir.myminicity.com/ >>>>>> >>>>>> ------------------------------------------------------------------------- >>>>>> This SF.Net email is sponsored by the Moblin Your Move Developer's >>>>>> challenge >>>>>> Build the coolest Linux based applications with Moblin SDK & win great >>>>>> prizes >>>>>> Grand prize is a trip for two to an Open Source event anywhere in the >>>>>> world >>>>>> http://moblin-contest.org/redirect.php?banner_id=100&url=/ >>>>>> _______________________________________________ >>>>>> Crystal-main mailing list >>>>>> [email protected] >>>>>> https://lists.sourceforge.net/lists/listinfo/crystal-main >>>>>> Unsubscribe: mailto:[EMAIL PROTECTED] >>>>>> >>>>>> >>>>> ------------------------------------------------------------------------- >>>>> This SF.Net email is sponsored by the Moblin Your Move Developer's >>>>> challenge >>>>> Build the coolest Linux based applications with Moblin SDK & win great >>>>> prizes >>>>> Grand prize is a trip for two to an Open Source event anywhere in the >>>>> world >>>>> http://moblin-contest.org/redirect.php?banner_id=100&url=/ >>>>> _______________________________________________ >>>>> Crystal-main mailing list >>>>> [email protected] >>>>> https://lists.sourceforge.net/lists/listinfo/crystal-main >>>>> Unsubscribe: mailto:[EMAIL PROTECTED] >>>>> >>>>> >>>>> >>>> >>>> -- >>>> Project Manager of Crystal Space (http://www.crystalspace3d.org) >>>> and CEL (http://cel.crystalspace3d.org) >>>> Support Crystal Space. Donate at >>>> https://sourceforge.net/donate/index.php?group_id=649 >>>> Visit my town at http://waldir.myminicity.com/ >>>> >>>> ------------------------------------------------------------------------- >>>> This SF.Net email is sponsored by the Moblin Your Move Developer's >>>> challenge >>>> Build the coolest Linux based applications with Moblin SDK & win great >>>> prizes >>>> Grand prize is a trip for two to an Open Source event anywhere in the world >>>> http://moblin-contest.org/redirect.php?banner_id=100&url=/ >>>> _______________________________________________ >>>> Crystal-main mailing list >>>> [email protected] >>>> https://lists.sourceforge.net/lists/listinfo/crystal-main >>>> Unsubscribe: mailto:[EMAIL PROTECTED] >>>> >>>> >>> ------------------------------------------------------------------------- >>> This SF.Net email is sponsored by the Moblin Your Move Developer's challenge >>> Build the coolest Linux based applications with Moblin SDK & win great >>> prizes >>> Grand prize is a trip for two to an Open Source event anywhere in the world >>> http://moblin-contest.org/redirect.php?banner_id=100&url=/ >>> _______________________________________________ >>> Crystal-main mailing list >>> [email protected] >>> https://lists.sourceforge.net/lists/listinfo/crystal-main >>> Unsubscribe: mailto:[EMAIL PROTECTED] >>> >>> >> >> >> >> > > > ------------------------------------------------------------------------- > This SF.Net email is sponsored by the Moblin Your Move Developer's challenge > Build the coolest Linux based applications with Moblin SDK & win great prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > _______________________________________________ > Crystal-main mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/crystal-main > Unsubscribe: mailto:[EMAIL PROTECTED] > -- Project Manager of Crystal Space (http://www.crystalspace3d.org) and CEL (http://cel.crystalspace3d.org) Support Crystal Space. 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