+- Qbasicnews.com (http://qbasicnews.com/newforum)
+-- Forum: Qbasic "like" compilers/interpreters (http://qbasicnews.com/newforum/forum-5.html)
+--- Forum: FB Discussion & Programming Help (http://qbasicnews.com/newforum/forum-15.html)
+--- Thread: gfxlib source (/thread-8726.html)
gfxlib source - wallace - 01-11-2006
I need to build a sub that will scale an image. I can do that pretty easily, however I need it to be FAST. For loops are just too slow, I remember hearing that FB's GET and PUT routines were written in assembly and are much faster than anything I could write. What I want to do is insert that assembly code in an inline assembly block and tweak it to do what I want it to do. Does anybody know where the source code for it is? I searched Freebasic.net and couldn't find it.
Alternativly does anybody have a superfast image scaling program?
gfxlib source - stylin - 01-11-2006
No, they're written in C, and the source (v0.15b) is available at:
http://www.freebasic.net/index.php/details?page=download&category=src&id=1
My usual advice is to profile and make sure you'e not trying to prematurely optimize, or are optimizing the wrong thing.
Have fun.
gfxlib source - Antoni Gual - 01-12-2006
D.J. Peters posted this code some days ago, you may find it useful
http://www.freebasic.net/forum/viewtopic.php?t=2441
gfxlib source - marzecTM - 01-12-2006
the blitters of the gfx lib are written in assembler ( the core of them ). i can't browse the cvs on sourceforge currently so download the source with the cvs client of your choice and search for .s files. i can't remember the names of the procedures but have a look for MMX and the like
gfxlib source - stylin - 01-12-2006
Ah yes, I guess I wasn't sure what you were asking. You're going to want to take a look at:
Code:
/FreeBASIC/src/gfxlib2
libfb_gfx_blitter_mmx.s
libfb_gfx_put_mmx.s
libfb_gfx_mmx.sgfxlib source - d.j.peters - 01-12-2006
http://forum.qbasicnews.com/viewtopic.php?p=130810#130810
Is it to slow?
Joshy