November 12, 2014 
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November 12, 2014 [00:03:27] *** mukunda_ has joined ##OpenGL[00:05:43] *** snakenerd has joined ##OpenGL[00:06:17] *** Crehl has quit IRC[00:09:31] *** Roze has quit IRC[00:09:54] *** snakenerd has quit IRC[00:10:28] *** jdolan has joined ##OpenGL[00:11:40] *** Alina-malina has joined ##OpenGL[00:18:39] *** Domx has joined ##OpenGL[00:18:52] *** ShadowIce has quit IRC[00:23:54] *** Misu has quit IRC[00:27:58] *** tcsc has quit IRC[00:29:44] *** Shogun has quit IRC[00:30:43] *** MiniCow has joined ##OpenGL[00:39:46] *** Zupo has quit IRC[00:40:00] *** Zupo has joined ##OpenGL[00:40:33] *** Zupoman has quit IRC[00:42:19] *** Ad1 has quit IRC[00:47:04] *** Jack_ has quit IRC[00:47:21] *** Jack_ has joined ##OpenGL[00:49:06] *** TyrfingMjolnir has joined ##OpenGL[00:52:19] *** stoopdapoop has quit IRC[00:54:04] *** stoopdapoop has joined ##OpenGL[00:56:43] *** Crehl has joined ##OpenGL[00:58:17] *** Kane has quit IRC[00:59:05] *** CainJacobi has joined ##OpenGL[01:01:38] *** konom has 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IRC[02:20:24] *** DapperPixpy has joined ##OpenGL[02:26:51] *** Crehl_ has joined ##OpenGL[02:27:43] *** konom has quit IRC[02:30:09] *** Crehl has quit IRC[02:30:57] *** puerum has joined ##OpenGL[02:33:47] *** kidnappe1 has joined ##OpenGL[02:33:52] *** konom has joined ##OpenGL[02:36:25] *** Demon_Fox has joined ##OpenGL[02:36:33] *** luxigo_ has quit IRC[02:40:06] *** hexagoxel_ has quit IRC[02:45:11] *** Crehl_ has quit IRC[03:00:04] *** TyrfingMjolnir has quit IRC[03:03:12] *** Garner has quit IRC[03:03:39] *** b4b has joined ##OpenGL[03:04:09] *** zajfy has joined ##OpenGL[03:07:10] *** prophile has quit IRC[03:16:04] *** SleekoNiko has quit IRC[03:17:36] *** SleekoNiko has joined ##OpenGL[03:22:10] *** jbud has quit IRC[03:24:35] *** samrat has joined ##OpenGL[03:30:57] *** samrat has quit IRC[03:31:30] *** lenarhoy2 has joined ##OpenGL[03:31:45] <lenarhoy2> what is the best way to make an object stop?[03:32:05] *** Orion] has quit IRC[03:32:55] <lenarhoy2> right now I add the negative normalized moving direction to the objects speed in each frame[03:33:09] <lenarhoy2> until it's lower than a certain threshold[03:33:45] <lenarhoy2> so that it doesn't oscillate around 0[03:34:20] <lenarhoy2> so under the threshold I set the acceleration to 0[03:35:08] <lenarhoy2> however, when the framerate is low, the decceleration makes bigger steps so that it needs a different threshold[03:35:28] <lenarhoy2> so the threshold needs to depend on the framerate too[03:35:31] *** ragecryx has quit IRC[03:35:36] <foobaz> how about inelastic collisions?[03:35:39] <bob_twinkles> scale your braking force by the framerate?[03:42:58] <Stragus> Have your physics work by "ticks" rather than frames[03:43:11] <Stragus> Such as 30 or 60 ticks per second, no matter the frame rate[03:45:24] <chrisf> lenarhoy2: fixed physics timestep. there is only pain in having it coupled to the render frame rate[03:46:03] *** charlie5 has quit IRC[03:47:38] *** nhayashi has left ##OpenGL[03:48:39] *** Hunts has joined ##OpenGL[03:49:27] *** charlie5 has joined ##OpenGL[03:49:31] *** charlie5 has left ##OpenGL[03:50:29] *** tcsc has joined ##OpenGL[03:52:27] *** HuntsMan has quit IRC[03:53:14] <lenarhoy1> thanks for the hints, I'm using ticks now and it works fine[03:55:15] *** manny- has quit IRC[03:59:38] *** samrat has joined ##OpenGL[04:01:46] *** manny- has joined ##OpenGL[04:02:09] *** xissburg has quit IRC[04:03:24] *** japro has quit IRC[04:03:50] <urraka> you could also compare the speed direction before and after adding that vector instead of checking a thershold[04:05:38] *** urraka has quit IRC[04:22:58] *** lurkerzero has joined ##OpenGL[04:24:28] *** telex has quit IRC[04:24:41] *** glYoda has quit IRC[04:25:04] *** glYoda has joined ##OpenGL[04:26:48] *** telex has joined ##OpenGL[04:28:57] *** luxigo_ has joined ##OpenGL[04:34:23] *** luxigo_ has quit IRC[04:35:19] *** lurkerzero has quit IRC[04:35:53] *** lenarhoyt has quit IRC[04:37:28] *** hahuang65 has joined ##OpenGL[04:38:15] *** curfont has quit IRC[04:39:31] *** curfont has joined ##OpenGL[04:41:37] *** Cabanossi has quit IRC[04:43:57] *** Cabanossi has joined ##OpenGL[04:45:13] *** BreadProduct has quit IRC[04:45:51] *** BreadProduct has joined ##OpenGL[04:49:27] *** luxigo_ has joined ##OpenGL[04:51:26] *** lenarhoy2 has quit IRC[04:52:30] *** wiky has joined ##OpenGL[04:54:11] *** luxigo_ has quit IRC[04:55:12] *** shingshang has joined ##OpenGL[04:56:43] *** robot-beethoven has joined ##OpenGL[04:58:29] *** slime has quit IRC[04:59:37] *** _leb has quit IRC[04:59:58] *** luxigo_ has joined ##OpenGL[05:00:41] *** leb has joined ##OpenGL[05:00:58] *** kidnappe1 has quit IRC[05:00:59] *** lenarhoy1 has quit IRC[05:02:12] *** pizthewiz has quit IRC[05:02:46] *** lenarhoyt has joined ##OpenGL[05:04:34] *** kidnapped_robot has joined ##OpenGL[05:05:34] *** pizthewiz has joined ##OpenGL[05:07:21] *** xish has joined ##OpenGL[05:10:38] *** pizthewiz has quit IRC[05:13:37] <Domx> git git[05:13:50] <Domx> git gti got gut gto[05:13:54] *** kuldeepdhaka has joined ##OpenGL[05:13:56] <Domx> hit[05:14:18] <Domx> i should make these all aliasias for git[05:14:35] *** hahuang65 has quit IRC[05:15:55] *** wiky has quit IRC[05:18:08] *** LifeBlood has joined ##OpenGL[05:19:17] *** slidercrank has joined ##OpenGL[05:20:30] *** RyanPridgeon has quit IRC[05:21:29] <foobaz> Domx: try http://r-wos.org/hacks/gti[05:21:36] <foobaz> in the tradition of sl[05:23:28] *** nimtz has quit IRC[05:24:19] *** slime has joined ##OpenGL[05:25:52] *** b4b has quit IRC[05:27:11] *** slidercrank has quit IRC[05:39:09] *** Xark has quit IRC[05:40:22] *** qeed has quit IRC[05:40:45] *** DolpheenDream has quit IRC[05:43:18] *** samrat has quit IRC[05:43:37] *** tcsc has quit IRC[05:43:43] *** BreadProduct has quit IRC[05:47:21] *** BreadProduct has joined ##OpenGL[05:48:06] *** tcsc has joined ##OpenGL[05:48:58] *** SBox has joined ##OpenGL[05:49:33] *** f0ster has quit IRC[05:50:14] *** pizthewiz has joined ##OpenGL[05:53:22] *** narcan has joined ##OpenGL[05:54:40] *** kestasjk_ has quit IRC[05:55:23] *** krnlyng has quit IRC[05:56:12] *** kestasjk_ has joined ##OpenGL[05:56:57] <SBox> I'm trying to get the forward, right and up vectors for an object from a column-major ordered matrix but I get wrong results for the right vector, it could be for other reasons so I want to make sure that my method for getting the vectors is right, what I do is: right: {m[0], m[4], m[8]}, up: {m[1], m[5], m[9]}, back: {m[2], m[6], m[10]} is this correct?[06:00:13] <Stragus> I'm often confused about the column/row-major thingy, but if that doesn't work, try [0,1,2], [4,5,6], [8,9,10][06:02:27] *** HunterD has joined ##OpenGL[06:02:42] <SBox> None of those seem to work... I can't understand what I did wrong[06:03:18] *** pizthewiz has quit IRC[06:07:02] *** Demon_Fox has quit IRC[06:07:25] *** SBox has left ##OpenGL[06:08:09] *** Xark has joined ##OpenGL[06:08:48] *** Demon_Fox has joined ##OpenGL[06:09:13] *** slime has quit IRC[06:11:30] *** slime has joined ##OpenGL[06:14:46] *** tcsc has quit IRC[06:20:06] *** charlie5 has joined ##OpenGL[06:20:09] *** charlie5 has left ##OpenGL[06:26:48] *** hahuang65 has joined ##OpenGL[06:27:13] *** hahuang65 has quit IRC[06:27:24] *** hahuang65 has joined ##OpenGL[06:28:47] *** Zupo2 has joined ##OpenGL[06:31:05] *** Zupo has quit IRC[06:32:11] *** spudzee has joined ##OpenGL[06:32:51] <spudzee> so I want to start programming in opengl. What libraries should I be looking into?[06:33:03] <spudzee> I want to do lots of 3d, interactive stuff[06:33:05] <roboman2444> uh... libgl?[06:33:13] <spudzee> like making a 3d game[06:33:30] <spudzee> do I need to download that?[06:34:02] *** pizthewiz has joined ##OpenGL[06:34:07] *** samrat has joined ##OpenGL[06:34:55] <spudzee> well I guess my next question should be: how the f do I install this[06:35:31] <spudzee> roboman...?[06:36:50] <Stragus> What operating system and compiler?[06:37:04] *** TyrfingMjolnir has joined ##OpenGL[06:37:33] <spudzee> microsoft visual 2010 I think. and windows 7[06:37:37] <Stragus> OpenGL drivers should already be installed, you might have to install library headers depending on the platform[06:38:16] <Stragus> Okay, if you don't have headers such as GL/gl.h included, you'll probably need to install some OpenGL package for MS VS[06:38:30] *** skoskav has quit IRC[06:38:45] <spudzee> is there any way I can use sublime to program in opengl. Because Christ I hate visual[06:39:07] <Stragus> Sure, code is code, you can use any editor you want[06:39:27] <Stragus> I use mingw64 to compile on Windows personally[06:39:51] *** gaganjyot has joined ##OpenGL[06:39:54] <Stragus> (I write C99 code using gnu99 extensions, and VS is still stuck on C89)[06:40:39] <spudzee> is mingw64 a compiler or an IDE as well as a compiler?[06:41:26] <Stragus> A compiler, it's GCC on Windows[06:41:50] <spudzee> okay, so how would this work. I write my code in sublime then what?[06:41:59] <spudzee> open with mingw64[06:42:14] <Stragus> Easiest way would be to make a .bat file with commands to invoke GCC and output your .exe[06:42:26] <Stragus> The fancier way would be to use Makefiles... but that can come later[06:42:41] <Hunts> or cmake[06:42:54] <spudzee> this all sounds a lot more complicated than HTML...[06:42:59] <spudzee> or python[06:43:15] <spudzee> but I'm here to mother truckin make this work![06:43:32] <Stragus> Uh. A .bat file to compile .c files into an .exe is pretty simple, as far as build processes go[06:43:42] <Hunts> you can also use OpenGL with python[06:43:48] <spudzee> seriously?[06:43:53] <spudzee> that's awesome[06:44:14] <Stragus> I would still recommend a real programming language, but eh, whatever works for you[06:44:15] <spudzee> I thought the default was to just use C++[06:44:27] *** kidnapped_robot has quit IRC[06:44:29] <Hunts> "default"?[06:44:36] <spudzee> what most people use[06:44:46] <Stragus> OpenGL's native interface is C, which you can call from about any language[06:44:53] *** Garmine has quit IRC[06:45:30] *** csssuf has joined ##OpenGL[06:45:42] <spudzee> anyways... how do I go about this? To do what you said "A .bat file to compile .c files into an .exe" what non native programs will I need to do this[06:46:03] <Stragus> Install mingw64, and... some kind of good code editor[06:46:21] <spudzee> I have sublime... so how do I install mingw64?[06:46:29] <Stragus> I heard good stuff about Notepad++ and UltraEdit on Windows[06:46:40] <Stragus> Put that in google and follow the first link[06:46:41] *** linuxuz3r_ has joined ##OpenGL[06:46:42] <spudzee> I've got the page, but it's just about as confusing as it gets[06:47:23] <spudzee> I'm here: http://mingw-w64.sourceforge.net/download.php[06:47:31] <spudzee> which of these do I need to get?[06:47:37] <Stragus> http://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win32/Personal%20Builds/mingw-builds/installer/mingw-w64-install.exe/download[06:48:50] <spudzee> do I need to change any of the settings in this install wizard?[06:49:14] <Stragus> I don't remember, probably not[06:49:35] *** linuxuz3r has quit IRC[06:49:37] <spudzee> error: res[06:50:34] <spudzee> okay... so it looks like it's here[06:51:20] <spudzee> alright, I have a good text editor and now a compiler. What's next?[06:51:44] <Stragus> Write code? :)[06:52:02] <bob_twinkles> spudzee: take a look at http://nehe.gamedev.net/[06:52:09] <bob_twinkles> I hear those tutorials are pretty good[06:52:11] *** Keniyal has quit IRC[06:52:15] <spudzee> I don't need to install any opengl libs or whatever?[06:52:31] <Stragus> I believe it's included in the Mingw64 package[06:52:38] <Hunts> no, libs are provided by your OS and drivers[06:52:45] <spudzee> I'm not great with tutorials. This environment right here is about my level[06:52:46] <Hunts> and don't use nehe, they are terribly outdated[06:53:05] *** MLM has quit IRC[06:53:08] <bob_twinkles> yeah but they're understandable[06:53:26] <bob_twinkles> I don't know any 3.0+ tutorials that actually make sense from a beginners perspective[06:53:26] <Hunts> and full of bugs[06:53:38] <slime> bob_twinkles: have you checked out http://open.gl/ ?[06:53:44] <spudzee> someone said to use libGL. Is what's in here?[06:53:50] <slime> or http://arcsynthesis.org/gltut/[06:54:04] <bob_twinkles> slime: @open.gl, not from the beginning no[06:54:10] <slime> your graphics drivers expose an implementation of the OpenGL API[06:54:15] <Stragus> spudzee, it's already installed with Mingw64[06:54:16] <bob_twinkles> the second one not at all[06:54:16] *** Garmine has joined ##OpenGL[06:54:21] *** Syzygy has quit IRC[06:54:40] *** Garmine is now known as Guest91894[06:55:23] <spudzee> k, so before I go off for a little while, firstly, I am going to be programming in C++ for this, right? And secondly, imagine I have code in sublime, where would I go from there?[06:55:50] <bob_twinkles> there are opengl bindings for almost any language you can think of[06:55:55] <bob_twinkles> but the native API is C[06:56:37] <Stragus> What you just installed is a compiler for C and C++[06:56:44] <Stragus> But you can pretty much use any language[06:56:53] <spudzee> okay, good.[06:57:12] <DapperPixpy> http://www.opengl-tutorial.org/beginners-tutorials/ Here's some decent OpenGL 3.0 Tutorials, starting from the ground up.[06:57:37] <Stragus> To compile with a .bat file, put this in the first line: path=C:\MinGW64\bin or wherever you installed Mingw64[06:57:39] <Hunts> spudzee: by the way, you sound like you really need to learn C++ first :D[06:57:47] * Stragus nods to that[06:57:48] <spudzee> O[06:58:08] <spudzee> I'm not the kind of person who 'learns a programming language' in the terms that most people think of[06:58:42] <spudzee> I create something functional which in turn, gives me an understanding of the language[06:59:37] <csssuf> FWIW, i've found that whenever i try to do something that way i end up with bad habits and little perspective[07:00:37] <spudzee> I understand that, but getting in there and making something gives me an idea of the 'grammar' of the programming language[07:01:01] <spudzee> I just can't learn any other way. Trust me, I've tried[07:01:22] <Hunts> spudzee: that doesn't really say much[07:01:31] <spudzee> I know it doesn't[07:01:36] <Hunts> you cannot really learn GL and some programming language[07:01:37] *** luxigo_ has quit IRC[07:01:40] <spudzee> but it's the truth[07:01:44] <Stragus> I don't think that'll work with real programming languages, Python doesn't count[07:01:46] <Hunts> because GL goes further than just programming concepts[07:02:08] <spudzee> what do you mean by further?[07:02:35] <Hunts> spudzee: computer graphics concepts[07:02:40] <Hunts> and lots of math :D[07:03:33] <spudzee> I know multivariable calculus and linear algebra. I think I have the math bit down[07:04:03] *** Plasmastar has quit IRC[07:04:33] <Stragus> You should learn the language before you get into OpenGL, eat one piece at a time[07:06:03] *** Plasmastar has joined ##OpenGL[07:07:00] <Stragus> Also, real languages provide you with a lot of flexibility and control, which you need to learn. Statements like this won't be intuitive: void *(* const foo)( int * const restrict *p ) = foobar;[07:07:52] <bob_twinkles> ... are there situations where that's acceptable code?[07:08:45] <bob_twinkles> wait no that's actually not as complicated as I thought it was[07:08:56] <bob_twinkles> my client split it halfway through the argument declaration =P[07:09:18] <Stragus> :) Kind of useless to declare a function pointer as const, but eh[07:10:33] <bob_twinkles> well if it's an argument to another function it could make sense? though it would make you wonder what the program was doing in the places where it wasn't const...[07:11:02] *** skoskav has joined ##OpenGL[07:11:18] <Stragus> Right, it would make sense as an argument, without the initialization part[07:14:53] *** kuldeepdhaka has quit IRC[07:17:51] *** BreadProduct has quit IRC[07:20:39] <spudzee> okay so I have a little hello world program. How do I use Mingw64 to run my C++ program?[07:21:14] <spudzee> you said something about giving it a path[07:21:24] <spudzee> I don't really know what you meant by that[07:21:41] <Stragus> Create a .bat file, put that first line in it and fix the path to Mingw64's \bin directory[07:21:43] *** Syzygy_ has joined ##OpenGL[07:21:49] *** shintah has joined ##OpenGL[07:22:21] <Stragus> Next line: gcc helloworld.c -O2 -o helloworld.exe[07:22:47] <Stragus> You might want to add a "pause" or something, or I think Windows closes the terminal right away[07:23:33] *** Gamecubic has quit IRC[07:24:22] <spudzee> my mingw64 contains the following: mingw-w64.bat, mingw-w64, uninstall, and uninstall.ini[07:24:51] <spudzee> that's good, right?[07:25:00] <Stragus> mingw64/mingw-w64/bin then[07:25:24] <spudzee> well... there's not a bin folder anywhere in here[07:25:56] <Stragus> Is that where you installed Mingw64?...[07:26:08] <spudzee> yep[07:26:36] <spudzee> I open it up and I have this: i686-4.9.2-posix-dwarf-rt_v3-rev0[07:26:47] <Stragus> There should be a bin/ directory somewhere with a bunch of stuff including gcc.exe[07:27:03] * Stragus doesn't have any Windows machine nearby to check[07:27:06] <spudzee> I am assuming that is has messed up, because I don't know who in their right mind names a folder i686-4.9.2-posix-dwarf-rt_v3-rev0[07:27:20] <spudzee> don't worry, I'm getting a mac soon[07:27:33] <spudzee> unless you're on linux, which is even worse[07:27:39] <spudzee> (conflict)[07:27:40] *** pizthewiz has quit IRC[07:28:02] *** moser has joined ##OpenGL[07:28:22] <spudzee> let me try a re-install[07:29:26] *** Life-Blood has joined ##OpenGL[07:30:52] *** DapperPixpy has quit IRC[07:30:56] <spudzee> re-install didn't work. I literally I have no idea why this isn't working[07:31:15] <spudzee> it has a link to the actual downloads page in here[07:32:21] *** Life-Blood has quit IRC[07:32:39] *** Life-Blood has joined ##OpenGL[07:33:09] *** LifeBlood has quit IRC[07:40:39] *** Zupo2 has quit IRC[07:44:29] *** Life-Blood has quit IRC[07:51:30] *** damir__ has quit IRC[07:59:31] *** HunterD has quit IRC[08:01:32] *** gaganjyot has quit IRC[08:05:21] *** moser has quit IRC[08:05:53] *** kuldeepdhaka has joined ##OpenGL[08:07:46] *** Twinklebear has quit IRC[08:08:17] *** moser has joined ##OpenGL[08:09:06] *** Lemml has joined ##OpenGL[08:11:08] *** Burga has joined ##OpenGL[08:14:52] *** spudzee has quit IRC[08:19:30] *** ninzine has quit IRC[08:22:59] *** HunterD has joined ##OpenGL[08:23:57] *** cr`nge has quit IRC[08:26:17] *** puerum has quit IRC[08:26:58] *** lenarhoyt has quit IRC[08:27:59] *** damir__ has joined ##OpenGL[08:28:18] *** Syzygy_ has quit IRC[08:28:31] *** CainJacobi has quit IRC[08:28:53] 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joined ##OpenGL[09:33:08] *** Khlorghaal has quit IRC[09:36:23] *** wiky has joined ##OpenGL[09:38:03] *** PasNox has joined ##OpenGL[09:39:05] <mtj> you have the patience of a saint Stragus[09:39:58] <jubei> mtj: I don’t recall such a saint ever existing[09:41:17] *** clauswitt has joined ##OpenGL[09:46:06] *** pazul has joined ##OpenGL[09:52:16] *** redeemed has joined ##OpenGL[09:52:56] *** slime has quit IRC[09:55:05] *** slime has joined ##OpenGL[09:59:07] *** jubei has quit IRC[09:59:40] *** jubei has joined ##OpenGL[09:59:57] *** jubei has quit IRC[10:04:29] *** CainJacobi has quit IRC[10:07:39] *** kuldeepdhaka has quit IRC[10:13:03] *** wiky has quit IRC[10:13:06] *** jubei has joined ##OpenGL[10:14:04] *** kuldeepdhaka has joined ##OpenGL[10:15:11] *** HunterD has joined ##OpenGL[10:17:06] *** BreadProduct has joined ##OpenGL[10:19:37] *** adsc has joined ##OpenGL[10:22:34] *** Hunts has quit IRC[10:24:39] *** Khlorghaal has joined ##OpenGL[10:24:50] *** wiky has joined ##OpenGL[10:33:14] *** Folkol has joined ##OpenGL[10:36:38] *** agorecki_ has quit IRC[10:36:58] *** snakenerd has joined ##OpenGL[10:38:09] *** viggo2 has joined ##OpenGL[10:39:51] *** Sos has joined ##OpenGL[10:40:33] *** AbiBuccaneer is now known as AbigailBuccaneer[10:41:09] *** panda81 has joined ##OpenGL[10:41:12] *** viggo has quit IRC[10:41:46] <CapsAdmin> i need a function that can ray cast with a specified width on bounding boxes (in 2d but 3d works too i guess)[10:41:59] <CapsAdmin> i can't find anything on google so i guess i'm not using the right terms, what terms should i use?[10:43:43] *** snakenerd has quit IRC[10:48:23] *** ttvd has quit IRC[10:49:22] *** wiky has quit IRC[10:50:19] *** ttvd has joined ##OpenGL[10:50:42] *** erhan_ has joined ##OpenGL[10:52:27] <AbigailBuccaneer> CapsAdmin, i don't know off the top of my head how you'd do that (and searches like "wide ray box intersection" aren't much help), but if you wanted to derive it yourself, an interesting starting point might be the fact that a rectangle could be thought of as the intersection of two perpendicular wide rays[10:53:12] *** lenarhoyt has joined ##OpenGL[10:55:19] *** Sos has quit IRC[10:57:27] *** Folkol has quit IRC[10:58:10] *** lenarhoyt has quit IRC[10:58:16] <CapsAdmin> here's a paint mockup of what i really need https://dl.dropboxusercontent.com/u/244444/ShareX/2014-11/2014-11-12_10-57-53.png[10:59:09] <CapsAdmin> AbigailBuccaneer, hmm thanks ill look some more[11:00:40] <AbigailBuccaneer> CapsAdmin, are the rays and the boxes all axis-aligned?[11:00:49] <CapsAdmin> they cannot rotate[11:01:03] <CapsAdmin> that's obb right?[11:01:46] <AbigailBuccaneer> http://portal.ku.edu.tr/~cbasdogan/Tutorials/imageU21.JPG a) axis-aligned bounding box. b) oriented bounding box[11:02:10] <Bloodust> why not NAABB[11:02:14] <AbigailBuccaneer> ?[11:02:21] <CapsAdmin> sp ot[11:02:25] <Bloodust> non axis-aligned bounding box[11:02:26] <CapsAdmin> so it's axis aligned then[11:02:29] <Bloodust> instead of OBB[11:03:31] *** neure has joined ##OpenGL[11:03:33] <neure> uff[11:03:37] *** Demon_Fox has quit IRC[11:03:41] <neure> doing bloom after tonemap just doesnt work[11:03:47] <Bloodust> no shit :D[11:04:30] <AbigailBuccaneer> neure, you could kinda fake it, but there'd be no point[11:04:37] <neure> yeah[11:04:54] <neure> i was hoping to do exposure early[11:05:43] <AbigailBuccaneer> CapsAdmin, if your ray and your boxes are axis-aligned, then it should be really easy. for a single ray-box intersection you just check if the min and max extents of the box (in the direction perpendicular to the ray) intersect with the min and max extents of the ray[11:05:51] *** Burga has quit IRC[11:14:20] *** TyrfingMjolnir has quit IRC[11:21:17] *** cr`nge_ has joined ##OpenGL[11:24:18] <CapsAdmin> AbigailBuccaneer, yeah i see what you mean i think[11:25:00] *** luxigo_ has joined ##OpenGL[11:25:08] <CapsAdmin> the ray will always be axis algined too so all i need to do pretty much is to find the closest line[11:26:28] *** luxigo_ has quit IRC[11:27:16] *** luxigo has joined ##OpenGL[11:27:22] *** cr`nge_ has quit IRC[11:35:54] *** stefkos has joined ##OpenGL[11:36:27] *** robot-beethoven has quit IRC[11:37:55] *** samrat has quit IRC[11:41:27] *** wutata has joined ##OpenGL[11:43:06] *** luxigo_ has joined ##OpenGL[11:45:12] *** zagabar has joined ##OpenGL[11:45:25] *** viggo2 has quit IRC[11:46:04] *** luxigo has quit IRC[11:47:29] *** jubei has quit IRC[11:48:03] <zagabar> Hello. I am having an issue where I call glVertexAttribPointer(shaderAttribute, 3, GL_FLOAT, GL_FALSE, 0, 0); (shaderAttribute is equal to 0) after binding: glBindBuffer(GL_ARRAY_BUFFER, mVertexBuffer); (mVertexBuffer is a non-zero GL_ARRAY_BUFFER). The call to glVertexAttribPointer generates GL_INVALID_OPERATION but from what I can see on this site http://docs.gl/gl3/glVertexAttribPointer none of the conditions of where INVALID_OPERATION is generate[11:48:14] <zagabar> hmm that probably cut off.[11:48:19] <zagabar> GL_INVALID_OPERATION but from what I can see on this site http://docs.gl/gl3/glVertexAttribPointer none of the conditions of where INVALID_OPERATION is generated is present[11:48:51] <zagabar> is there any way that INVALID_OPERATION can be generated from that call, aside from the situations in those docs?[11:49:02] <Bloodust> humm[11:52:19] <Bloodust> that seems weird[11:52:38] <Bloodust> glVertexAttribPointer doesnt actually do anything itself[11:53:13] <Bloodust> I dont know how it could throw invalid operation[11:53:19] <Bloodust> unless it was called between glBegin and glEnd[11:53:20] *** hexagoxel_ has joined ##OpenGL[11:53:59] *** lenarhoyt has joined ##OpenGL[11:54:08] <Adrinael> If there's no valid context, it could generate it[11:54:19] *** bjz has joined ##OpenGL[11:54:35] <zagabar> hm[11:54:45] *** kuldeepdhaka has quit IRC[11:54:47] <zagabar> I'm definitely not having any glBegin/glEnd calls.[11:55:39] <zagabar> If there is no valid context, then generating buffer objects, binding them, and compiling shaders etc would also break I suppose? Becuase those things all work[11:57:05] *** kuldeepdhaka has joined ##OpenGL[11:57:45] *** Bloodust has quit IRC[11:58:38] *** samrat has joined ##OpenGL[11:58:54] *** lenarhoyt has quit IRC[12:00:10] <Adrinael> Are you using a core context?[12:00:28] *** Bloodust has joined ##OpenGL[12:00:41] <Adrinael> As in, do you have a VAO set current?[12:01:06] *** doev has joined ##OpenGL[12:03:02] *** Guest91894 has quit IRC[12:03:02] *** Guest91894 has joined ##OpenGL[12:03:10] *** Guest91894 is now known as John_Titor[12:03:12] *** cr`nge has joined ##OpenGL[12:06:12] *** HunterD has quit IRC[12:07:05] *** hexagoxel_ has quit IRC[12:08:16] <zagabar> This is my code: http://pastebin.com/jXczAG86 and I based it off: http://en.wikipedia.org/wiki/Vertex_Buffer_Object#Example_usage_in_C_Using_OpenGL_3.x_and_OpenGL_4.x[12:08:31] <zagabar> I created my context as a 3.2 context using sdl2[12:08:54] <zagabar> and the "first error" print is 0, and the second is "invalid operation"[12:09:29] <zagabar> and yeah, no prints that tell me that the shader compilation was broken[12:11:25] <ClaudiusMaximus> zagabar: looks like you miss a VAO like Adrinael said, see https://www.opengl.org/sdk/docs/man3/xhtml/glGenVertexArrays.xml[12:11:50] <Bloodust> and some shader error checking[12:15:13] <jophish> AbigailBuccaneer: here?[12:15:27] <AbigailBuccaneer> vaguely[12:15:56] <zagabar> ClaudiusMaximus: oh crap. so much for trusting wikipedia code[12:15:58] <zagabar> thanks[12:19:48] *** kuldeepdhaka has quit IRC[12:21:44] <Adrinael> zagabar, that code is fine in a compatibility profile, where VAOs are not mandatory[12:21:55] *** PasNox has quit IRC[12:22:15] *** kuldeepdhaka has joined ##OpenGL[12:22:21] *** PasNox has joined ##OpenGL[12:22:31] <Adrinael> Probably written for 2.1[12:22:51] <Adrinael> Wait, the link says 3.x and 4.x[12:23:02] <Bloodust> zagabar http://www.opengl-tutorial.org/ https://open.gl/ http://ogldev.atspace.co.uk/index.html[12:27:28] *** BlackPhoenix has joined ##OpenGL[12:29:45] *** bazkie_bumpercar has joined ##OpenGL[12:29:50] *** PasNox has quit IRC[12:29:54] *** BlackFox has quit IRC[12:30:01] *** AbleBacon has quit IRC[12:30:02] *** erhan_ has quit IRC[12:30:15] *** PasNox has joined ##OpenGL[12:30:27] *** xish has quit IRC[12:30:43] <bazkie_bumpercar> hi there, i have a glsl (>= 1.5) question. i'm trying to have an array size set with a uniform, but i get the error that the uniform is not a constant integer. any idea how to do this?[12:30:46] *** erhan_ has joined ##OpenGL[12:30:55] <bazkie_bumpercar> the code: uniform int SSAO_kernelSize; uniform vec3 SSAO_kernel[SSAO_kernelSize];[12:31:26] <bazkie_bumpercar> (in other words, i'm trying to set the shader's array size from my c++ code, through this uniform)[12:32:37] <cmr> bazkie_bumpercar: you don't get variable-length arrays until 4.30.[12:32:51] *** luxigo_ has quit IRC[12:32:51] <Bloodust> bazkie_bumpercar use uniform buffer objects[12:32:54] <bazkie_bumpercar> ah, crap. so there's no solution for 1.5, basically?[12:32:56] <bazkie_bumpercar> ah[12:32:56] <ClaudiusMaximus> bazkie_bumpercar: make an array as big as you'll ever need and only use part of it, is what i do - you could also specify the size in a #define and recompile the shader (with three strings, one with the version etc, then one dynamically set with hte define, then the main shader stuff)[12:33:22] <bazkie_bumpercar> ClaudiusMaximus: isn't this inefficient? or will the unused space be optimized out?[12:33:34] <Bloodust> it wont be optimized out[12:33:37] <bazkie_bumpercar> Bloodust, thanks, i will read into that[12:33:49] <bazkie_bumpercar> okay :)[12:33:51] <Bloodust> why would you need variable size SSAO kernel array in the first place?[12:34:03] <bazkie_bumpercar> for variable quality[12:34:22] <bazkie_bumpercar> quality <-> speed options in my game's 'graphics settings'[12:34:52] <bazkie_bumpercar> SSAO quality: low ...... high[12:34:55] <Bloodust> right[12:35:15] <AbigailBuccaneer> if it's not going to change at runtime, then #define and recompilation is probably an acceptable solution[12:35:27] <bazkie_bumpercar> true[12:36:10] <bazkie_bumpercar> well, thanks for stating the options guys. i will just stick with a sane default for now and read into the uniform buffer objects later on[12:36:47] *** PasNox_ has joined ##OpenGL[12:36:52] *** jubei has joined ##OpenGL[12:36:55] *** PasNox has quit IRC[12:39:54] *** PasNox_ is now known as PasNox[12:43:39] <zagabar> Adrinael: aah, I see. thanks for clearing that up[12:43:54] *** PasNox has quit IRC[12:44:18] *** PasNox has joined ##OpenGL[12:44:21] *** Sos has joined ##OpenGL[12:44:48] *** samrat has quit IRC[12:45:45] *** samrat has joined ##OpenGL[12:51:27] *** HunterD has joined ##OpenGL[12:52:06] *** Beetny has quit IRC[12:52:23] *** indefini has joined ##OpenGL[12:52:57] *** PasNox has quit IRC[12:53:25] *** PasNox has joined ##OpenGL[12:55:08] *** lenarhoyt has joined ##OpenGL[12:56:40] *** joobei has joined ##OpenGL[12:57:47] *** jubei has quit IRC[12:59:27] *** PasNox has quit IRC[12:59:53] *** lenarhoyt has quit IRC[12:59:54] *** PasNox has joined ##OpenGL[13:03:25] *** snakenerd has joined ##OpenGL[13:06:35] *** PasNox has quit IRC[13:06:55] *** xish has joined ##OpenGL[13:07:01] *** PasNox has joined ##OpenGL[13:08:57] *** samrat has quit IRC[13:12:17] *** FrodoTheHobbit1 has joined ##OpenGL[13:15:03] *** FrodoTheHobbit has quit IRC[13:15:09] *** DrSkyLizard has joined ##OpenGL[13:16:03] *** PasNox_ has joined ##OpenGL[13:16:51] *** Folkol has joined ##OpenGL[13:17:46] *** Folkol has joined ##OpenGL[13:18:01] *** PasNox has quit IRC[13:19:21] *** John_Titor is now known as Garmine[13:20:39] *** jmcarthur has quit IRC[13:21:52] *** PasNox_ has quit IRC[13:24:09] *** jdolan has quit IRC[13:24:35] *** xissburg has joined ##OpenGL[13:24:35] *** PasNox_ has joined ##OpenGL[13:24:52] *** jdolan has joined ##OpenGL[13:28:41] *** urraka has joined ##OpenGL[13:31:51] *** cr`nge has quit IRC[13:34:46] *** jmcarthur has joined ##OpenGL[13:37:58] *** hexagoxel has joined ##OpenGL[13:40:00] *** PasNox_ has quit IRC[13:40:03] *** PasNox__ has joined ##OpenGL[13:40:25] *** PasNox__ is now known as PasNox[13:42:38] <neure> Bilinear filtering really sucks :/[13:42:56] <neure> why can't we have bicubic texture filtering..[13:43:27] <Khlorghaal> use a texturegather and do yourself[13:43:57] <Khlorghaal> bilinear is native to gl because hardware support afaik[13:43:57] <neure> on ES 2?-)[13:44:09] <Khlorghaal> use 4 texel fetches? :v[13:44:26] <Khlorghaal> suddenly less compelling :/[13:44:37] <neure> yeah[13:45:11] *** PasNox has quit IRC[13:45:36] *** PasNox has joined ##OpenGL[13:48:57] *** wutata- has joined ##OpenGL[13:52:24] *** wutata has quit IRC[13:55:51] *** lenarhoyt has joined ##OpenGL[13:57:22] *** newguise1234 has quit IRC[13:58:32] <ikarus> *facepalm* I keep forgetting by default OpenGL is screen XY[13:58:41] *** dshwang has quit IRC[14:00:05] *** dshwang has joined ##OpenGL[14:00:37] *** lenarhoyt has quit IRC[14:00:46] *** cr`nge has joined ##OpenGL[14:01:42] *** BitPuffin has joined ##OpenGL[14:03:49] *** BreadProduct has quit IRC[14:04:31] *** PasNox_ has joined ##OpenGL[14:04:39] *** PasNox has quit IRC[14:11:35] *** PasNox_ has quit IRC[14:11:43] *** newguise1234 has joined ##OpenGL[14:12:06] *** PasNox_ has joined ##OpenGL[14:13:52] *** lenarhoyt has joined ##OpenGL[14:14:27] *** shintahW2 has joined ##OpenGL[14:17:14] *** shintahW has quit IRC[14:17:14] *** shintahW2 is now known as shintahW[14:22:39] *** centrinia has quit IRC[14:24:11] *** srgjshiug has joined ##OpenGL[14:27:43] *** srgjshiug is now known as DrBoneStrong[14:28:14] *** DrBoneStrong has left ##OpenGL[14:28:37] *** DrBenway has quit IRC[14:30:09] *** razieliyo has joined ##OpenGL[14:32:37] *** DrBoneStrong has joined ##OpenGL[14:32:51] *** DrBoneStrong has left ##OpenGL[14:32:56] *** cr`nge has quit IRC[14:33:11] *** samrat has joined ##OpenGL[14:33:23] *** mat^2 has quit IRC[14:34:22] *** Sound has joined ##OpenGL[14:34:53] *** jdolan has quit IRC[14:35:36] *** moser has quit IRC[14:37:05] *** bb010g has quit IRC[14:37:23] *** telex has quit IRC[14:38:49] *** telex has joined ##OpenGL[14:41:08] *** luxigo_ has joined ##OpenGL[14:41:16] *** DrBenway has joined ##OpenGL[14:41:18] *** moser has joined ##OpenGL[14:48:16] *** luxigo_ has quit IRC[14:49:30] *** luxigo_ has joined ##OpenGL[14:52:01] <neure> mm[14:52:34] <neure> trying to do both HDR and dof with 8bit RGBA gets tricky :p[14:53:22] *** lahwran has quit IRC[14:54:20] *** doev has quit IRC[14:56:41] *** paul424 has joined ##OpenGL[14:57:03] *** FrodoTheHobbit has joined ##OpenGL[14:57:22] <paul424> Any example of high order mathematics which i8s used in 3d engines[14:57:34] *** FrodoTheHobbit1 has quit IRC[14:57:36] <neure> high order?[14:57:41] <paul424> When I was younger I always though there is some[14:57:45] <neure> linear algebra is useful for 3D[14:57:47] <paul424> hmm say high level[14:57:52] *** lahwran has joined ##OpenGL[14:57:55] *** MLM has joined ##OpenGL[14:58:01] <neure> well linear algebra gets you quite a lot[14:58:04] <paul424> arcanes whihc make the 3d engines keep going really fast[14:58:08] *** jdolan has joined ##OpenGL[14:58:28] <neure> master linear algebra, then come back for more[14:58:34] <paul424> but in the truth all of known techniques can be explained in undergraduate level student[14:58:47] <neure> maybe[14:58:59] <neure> linear algebra isnt that hard[14:59:45] <paul424> neure: especially culling ... the general algorithms for that are simple as stone[15:00:25] <neure> culling? basic view frustum culling is good enough often[15:00:35] <paul424> that also[15:01:21] <paul424> but what I mean bsp , quad trees etc. could be invented by a person having no knowledge in linear algebra[15:01:31] *** stefkos has quit IRC[15:02:29] *** jdolan has quit IRC[15:03:37] *** aethersis has joined ##OpenGL[15:03:40] <aethersis> hello[15:03:45] <aethersis> I haz a problem with framebuffers[15:04:09] <aethersis> I created one framebuffer, I have 2 textures and I want to have a few blur passes and then display it. How do I do that in general?[15:04:39] <neure> you render a quad[15:04:49] <neure> to fill contents of the destination texture[15:05:07] <neure> in the fragment shader you sample the source image at and around the pixel you are rendering to[15:05:14] <neure> that is the basic idea how to do filters[15:05:20] <aethersis> taht's what I get[15:05:45] <aethersis> I just don't know how to swap the textures so that they are being more and more blurred[15:06:11] *** mat^2 has joined ##OpenGL[15:06:13] <neure> pass 1: read from texture 0, write to texture 1 with a blur shader[15:06:23] <neure> pass 2: read from texture 1, write to texture 2 with a blur shader[15:06:41] <neure> or replace 2 with 0 if you do not need intermediate results later[15:07:09] <aethersis> so I swap textures?[15:07:14] <aethersis> how do I swap textures, in code[15:07:24] <aethersis> can I do this: GLuint tmp = tex1;[15:07:24] <aethersis> tex1=tex2;[15:07:24] <aethersis> tex2=tmp;[15:07:25] *** gaganjyot has joined ##OpenGL[15:07:31] <neure> no[15:07:48] <neure> what matters is the texture(s) bound to texture unit(s)[15:07:58] <neure> so glBindTexture()[15:08:08] <neure> that is for selecting where to read from[15:08:18] <aethersis> glBindTexture with what parameters?[15:08:24] <neure> to swap where to write to, either bind a different FBO, or edit your FBO[15:08:32] <aethersis> target is what? FBO?[15:08:39] <aethersis> or GL_TEXTURE_2D[15:08:53] <neure> aethersis, RTFM - go and find the specification[15:09:05] <aethersis> RTFTM?[15:09:12] <AbigailBuccaneer> read the friendly manual[15:09:23] <neure> https://www.opengl.org/registry/doc/glspec45.core.pdf[15:09:35] <AbigailBuccaneer> i don't think the spec is a good place to learn from[15:09:36] <neure> once it is loaded, press CTRL-F and type "BindTexture"[15:10:14] <AbigailBuccaneer> but aethersis if you don't know how to bind textures, blurring may be a little bit advanced for the level you're at[15:10:42] <paul424> http://en.wikipedia.org/wiki/Fast_inverse_square_root[15:10:56] <aethersis> what about fast inverse square root? I know how it works xD[15:11:01] <paul424> http://upload.wikimedia.org/math/d/e/9/de91ccab465612d1ccfef921bff8f042.png which relates the unit vector to the inverse square root of the distance components.[15:11:17] <AbigailBuccaneer> aethersis, not everybody in this channel is addressing you[15:11:55] <paul424> ahh I get it[15:12:37] *** Keniyal has joined ##OpenGL[15:14:18] *** panda81 has quit IRC[15:14:48] *** paperManu has joined ##OpenGL[15:16:16] <paul424> I don't get it , why someone would keep the mesh light vectors as not an normal vectors ?[15:16:19] <paul424> aethersis: ?[15:17:34] <AbigailBuccaneer> paul424, the direction from the light to your mesh is important, but often so is the distance[15:17:38] <AbigailBuccaneer> (for falloff, etc.)[15:18:13] <paul424> ahh so actually it's for lighting vector[15:18:27] <paul424> not surface normals ... stupid wiki[15:18:32] <AbigailBuccaneer> ??[15:18:51] <AbigailBuccaneer> we're not mind-readers, paul424[15:19:05] <paul424> stupid wikipedia http://en.wikipedia.org/wiki/Fast_inverse_square_root[15:19:06] <Bloodust> speak for yourself[15:19:35] <paul424> Surface normals are used extensively in lighting and shading calculations, requiring the calculation of norms for vectors. A field of vectors normal to a surface is shown here.[15:20:00] *** Match has joined ##OpenGL[15:20:34] <AbigailBuccaneer> paul424, the wikipedia article is correct - surface normals are used extensively in lighting and shading calculations[15:20:47] <AbigailBuccaneer> and while they are stored normalized, that's typically per-vertex[15:21:10] <paul424> sure but FISR is applied elsewhere[15:21:12] <AbigailBuccaneer> and when computing a per-fragment normal, you need to renormalize the data[15:21:34] <Bloodust> booyaaa[15:21:46] *** Zupo has joined ##OpenGL[15:22:43] <paul424> aha , quake 3 engine did that[15:22:47] <paul424> ?[15:23:44] <paul424> Are you sure if I have ... hmm right you need to renormalize , the average sum is not normalized[15:24:20] <paul424> How such average sum is called , weighted sum ?[15:26:30] *** katlogic_ has joined ##OpenGL[15:27:08] <paul424> http://en.wikipedia.org/wiki/Weight_function[15:27:10] *** katlogic has quit IRC[15:27:43] *** bjz has quit IRC[15:28:20] <paul424> AbigailBuccaneer: ?[15:30:44] <aethersis> http://pastebin.com/eBztix04[15:30:47] <aethersis> what's wrong with this code :<[15:31:01] <aethersis> it displays only the unblurred image, it seems to do no swapping and blurring at all[15:31:03] *** katlogic_ has quit IRC[15:31:05] <AbigailBuccaneer> paul424, when computing a per-fragment normal, the GPU performs what's called 'linear interpolation' between the three per-vertex normals that make up the face[15:31:19] <AbigailBuccaneer> a linear interpolation is a type of weighted average, yes[15:31:25] <paul424> sure , sure but I speak about pre-GPU era[15:31:30] <paul424> quake 3 enigne :)[15:31:33] <AbigailBuccaneer> (you may see "linear interpolation" abbreviated to "lerp")[15:31:47] <paul424> ok many thanks, AbigailBuccaneer :)[15:32:27] *** homesitter has joined ##OpenGL[15:32:29] <AbigailBuccaneer> paul424, http://en.wikipedia.org/wiki/Quake_III_Arena "Quake 3 requires an OpenGL-compliant graphics accelerator to run. The game does not include a software renderer."[15:32:36] *** katlogic has joined ##OpenGL[15:33:15] <paul424> sure , the T&L was done on the CPU at that era[15:33:41] <homesitter> and with register combiners !?![15:33:43] *** bjz has joined ##OpenGL[15:34:21] <paul424> or maybe not .... would have to look what does it mean for Geforce to bring TandL onto GPU[15:34:54] <homesitter> it think nvidia introduced register combiners for geforce[15:37:37] *** gaganjyot has quit IRC[15:38:21] <paul424> There must have been two renderers one for non-T&L and one T&L than[15:38:34] <paul424> cause you could run Q3 on Voodoo2 and other craps[15:38:49] <AbigailBuccaneer> the great thing about quake 3 is that you can go and read the code yourself instead of just guessing[15:39:22] <Bloodust> yeah sure[15:39:27] <Bloodust> just go ahead and read the code[15:39:41] *** xissburg has quit IRC[15:39:42] <Bloodust> like its not going to take you days to figure out whats going on int it[15:40:16] <aethersis> can anyone help with this code? http://pastebin.com/eBztix04[15:40:34] *** xissburg has joined ##OpenGL[15:41:52] *** homesitter has quit IRC[15:42:20] *** prosper_ has joined ##OpenGL[15:43:41] <AbigailBuccaneer> aethersis, your OnRender() is fairly significantly wrong - you bind your two textures to texture units 0 and 1, which makes sense, but the shader only has a uniform sampler that's bound to 0, and nowhere do you switch the framebuffer or framebuffer attachments to render *to* the textures[15:45:47] *** luxigo_ has quit IRC[15:46:56] *** jdolan has joined ##OpenGL[15:49:03] *** Gamecubic has joined ##OpenGL[15:49:17] *** prosper_ has quit IRC[15:49:23] *** roboman2444 has quit IRC[15:50:27] *** shintahW2 has joined ##OpenGL[15:53:18] *** prosper_ has joined ##OpenGL[15:54:40] *** shintahW has quit IRC[15:54:41] *** shintahW2 is now known as shintahW[15:58:19] *** paul424 has quit IRC[15:58:46] *** Bloodust has quit IRC[16:01:23] *** Bloodust has joined 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##OpenGL[16:26:57] *** cnu- has joined ##OpenGL[16:27:28] *** cnu- has joined ##OpenGL[16:27:31] *** cnu- has quit IRC[16:27:49] *** SleekoNiko has quit IRC[16:27:57] <aethersis> AbigailBuccaneer, you mean that I should switch the texture that is assigned to the sampler?[16:28:14] *** Ad1 has joined ##OpenGL[16:28:27] *** cnu- has joined ##OpenGL[16:28:30] *** cnu- has quit IRC[16:28:57] *** cnu- has joined ##OpenGL[16:29:02] *** ivan\ has joined ##OpenGL[16:29:15] <aethersis> it is so confusing, I wish i had code I can learn it from[16:29:28] *** cnu- has joined ##OpenGL[16:30:38] *** BlackPhoenix has quit IRC[16:30:58] *** snakenerd has quit IRC[16:32:55] *** pizthewiz has joined ##OpenGL[16:33:31] *** metredigm has joined ##OpenGL[16:34:23] *** pa has joined ##OpenGL[16:34:51] *** ivan\ has quit IRC[16:35:31] <Yaniel> oh but you have[16:35:40] <Yaniel> see the github link in the channel topic[16:47:50] *** prosper_ has quit IRC[16:50:28] *** doomlord_1 has quit IRC[16:54:39] *** Sound has quit IRC[16:55:15] *** sedeki has quit IRC[16:55:58] *** snakenerd has joined ##OpenGL[16:56:01] *** sedeki has joined ##OpenGL[16:56:05] *** samrat has quit IRC[16:56:12] *** sedeki has quit IRC[16:57:07] *** samrat has joined ##OpenGL[17:04:07] *** gaganjyot has joined ##OpenGL[17:04:10] *** JT-Shop has left ##OpenGL[17:04:30] <Stragus> Philae has landed![17:05:14] <csssuf> we spaced pretty good![17:09:28] *** kuldeepdhaka has quit IRC[17:10:24] *** kestasjk_ has quit IRC[17:11:04] *** kuldeepdhaka has joined ##OpenGL[17:11:23] *** dusted has joined ##OpenGL[17:11:45] *** Sos has quit IRC[17:11:46] *** Ad1_RN has joined ##OpenGL[17:12:51] *** DrSkyLizard has quit IRC[17:14:53] *** Ad1_RnR has quit IRC[17:17:17] *** metredigm has quit IRC[17:17:32] *** roboman2444 has joined ##OpenGL[17:18:42] *** metredigm has joined ##OpenGL[17:18:46] *** metredigm has left ##OpenGL[17:20:10] *** stefkos has joined ##OpenGL[17:23:27] *** wutata- has quit IRC[17:30:21] *** jdolan has quit IRC[17:30:29] *** jdolan has joined ##OpenGL[17:33:21] *** redeemed has quit IRC[17:38:31] *** pazul has quit IRC[17:41:53] *** Zupo has quit IRC[17:42:09] *** linuxuz3r has joined ##OpenGL[17:47:00] *** zerd_ has quit IRC[17:50:15] *** Bloodust has quit IRC[17:50:39] *** kuldeepdhaka has quit IRC[17:50:51] <aethersis> lol 5000 fps[17:50:52] *** pazul has joined ##OpenGL[17:51:07] *** kuldeepdhaka_ has joined ##OpenGL[17:52:06] *** Bloodust has joined ##OpenGL[17:52:13] *** zerd has joined ##OpenGL[17:53:47] *** Ryp has joined ##OpenGL[17:54:21] *** shingshang has quit IRC[17:54:28] *** Waynes has joined ##OpenGL[17:54:35] *** Ryp has joined ##OpenGL[17:57:04] *** Ryp has quit IRC[17:58:08] *** Bloodust- has joined ##OpenGL[17:59:10] *** tomnewmann has joined ##OpenGL[17:59:38] *** tomnewmann has quit IRC[17:59:47] *** tomnewmann has joined ##OpenGL[18:01:36] *** Waynes has quit IRC[18:03:38] *** Waynes has joined ##OpenGL[18:06:22] *** pazul has quit IRC[18:07:31] *** Misu has joined ##OpenGL[18:08:19] *** tomnewmann has quit IRC[18:08:29] *** tomnewmann has joined ##OpenGL[18:09:41] *** t4nk651 has joined ##OpenGL[18:09:45] <t4nk651> hello[18:09:49] <t4nk651> anyone here?[18:10:15] <t4nk651> hello?[18:10:37] <t4nk651> hello[18:10:40] *** Zupo2 has joined ##OpenGL[18:10:50] <t4nk651> anyone here?[18:13:43] <Stragus> Don't ask to ask, just ask questions directly[18:15:07] *** t4nk651 has quit IRC[18:15:31] *** tomnewmann has quit IRC[18:17:52] *** HuntsMan has joined ##OpenGL[18:18:29] *** pazul has joined ##OpenGL[18:22:50] *** PasNox_ has quit IRC[18:27:05] *** kuldeepdhaka_ has quit IRC[18:28:05] *** mejid has joined ##OpenGL[18:29:51] *** cr`nge has joined ##OpenGL[18:30:28] *** Bloodust has quit IRC[18:30:28] *** Bloodust- is now known as Bloodust[18:33:13] *** f0ster has joined ##OpenGL[18:35:32] *** RyanPridgeon has joined ##OpenGL[18:40:11] *** hahuang65 has quit IRC[18:42:29] *** hexagoxel has quit IRC[18:45:35] *** Khlorghaal has quit IRC[18:49:45] *** erhan_ has quit IRC[18:52:30] *** TheBunnyZOS has joined ##OpenGL[18:53:30] *** kuldeepdhaka_ has joined ##OpenGL[18:56:32] *** gaganjyot has quit IRC[18:58:23] *** gaganjyot has joined ##OpenGL[18:59:33] *** staylor has joined ##OpenGL[19:08:20] <aethersis> is there some way to get dimensions of 2dSampler in glsl?[19:08:23] <aethersis> its width and height[19:08:43] <aethersis> I can also pass it as uniform but I am just curious[19:08:45] <HuntsMan> https://www.opengl.org/sdk/docs/man/html/textureSize.xhtml[19:09:25] *** damir__ has joined ##OpenGL[19:11:44] *** kuldeepdhaka_ has quit IRC[19:11:45] *** rosseaux has joined ##OpenGL[19:15:01] *** roboman2444 has quit IRC[19:15:17] *** Match has quit IRC[19:18:16] <aethersis> can texture3d be attached fo FBO?[19:18:48] <HuntsMan> a layer of the texture can[19:19:21] <aethersis> shit[19:20:01] <Bloodust> why not array texture![19:20:09] <HuntsMan> why shit? :D[19:20:13] <aethersis> I implemented a convolution filter in 2D[19:20:15] *** Keniyal has quit IRC[19:20:27] <aethersis> that renders progressively, like it blurs more and more with every render pass[19:20:37] <aethersis> but I will need a very similar thing but for 3d soon[19:21:03] <HuntsMan> so?[19:21:15] <HuntsMan> you render one slice/layer at a time[19:21:38] *** Martty has quit IRC[19:21:58] *** hahuang65 has joined ##OpenGL[19:22:04] <Bloodust> yeah that[19:22:27] <aethersis> doesn't sound too efficient :/[19:22:41] <aethersis> because lots of load is on CPU, swapping the textures etc[19:22:51] <aethersis> memory efficiency is crucial here[19:23:16] <aethersis> in fact it takes much more time than computations[19:23:31] <Waynes> computation of what?[19:24:08] *** LifeBlood has joined ##OpenGL[19:24:52] <aethersis> fluid dynamics[19:25:13] <aethersis> the mathematical operations are extremely simple but it requires huge memory bandwidth[19:25:32] <aethersis> so the more efficiently the data is pushed through the pipeline, the better for it[19:26:24] <Waynes> why do you transfer memory?[19:27:02] *** hexagoxel has joined ##OpenGL[19:27:38] <aethersis> everything will be in gpu, but you still need to swap the textures[19:28:22] <Waynes> why would that be done on the cpu?[19:28:40] *** Martty has joined ##OpenGL[19:30:30] <aethersis> right now it has 5000 fps for 512x512 texture XDDDDD[19:30:38] <aethersis> on CPU it was like 100 fps?[19:30:44] <aethersis> or maybe 50 lmfao[19:30:52] <aethersis> it's really 100x faster xD[19:31:07] <aethersis> it's just unbelievable[19:31:21] <Yaniel> it doesn't really matter if you compute it per slice or in one go[19:31:30] <aethersis> oh i see[19:31:39] <aethersis> do you know any reliable way of measuring FPS in GLUT?[19:31:45] <aethersis> maybe it's improperly implemented[19:32:01] <Yaniel> don't use GLUT for one :D[19:32:16] <Waynes> why not[19:32:43] <Yaniel> it is impractical for most things[19:33:06] <Yaniel> and ancient, unless you use freeglut[19:33:16] *** adsc has quit IRC[19:33:21] <Waynes> can you even download the old glut anymore?[19:33:32] <Yaniel> anyway you could store the time every time onRender is called[19:34:01] *** ShadowIce has joined ##OpenGL[19:36:01] <Yaniel> and calculate the FPS from the difference between frames[19:36:21] <Yaniel> that's how it is practically done anyway[19:37:07] <Yaniel> maybe averaging over N frames or seconds[19:37:50] *** FrodoTheHobbit has quit IRC[19:38:28] <aethersis> I use freeglut[19:38:42] <aethersis> that's how I do that, it's probably working[19:49:53] *** mejid has quit IRC[19:52:34] *** foreignFunction has joined ##OpenGL[19:52:41] *** Viata has joined ##OpenGL[19:56:14] *** magicthing has joined ##OpenGL[19:56:23] *** snakenerd has quit IRC[19:56:33] *** magicthing has left ##OpenGL[19:56:35] *** magicthing has joined ##OpenGL[19:56:54] *** magicthing has left ##OpenGL[19:56:57] *** magicthing has joined ##OpenGL[19:57:09] *** snakenerd has joined ##OpenGL[19:58:10] *** samrat has quit IRC[19:58:43] *** snakenerd has quit IRC[19:59:47] *** Dudi has joined ##OpenGL[20:04:49] <aethersis> is there something like texelFetchOffset but for floats?[20:05:36] <HuntsMan> texture() :D[20:06:54] <aethersis> wtf[20:07:20] <aethersis> it will return me vec4 for given UV ?[20:08:16] <HuntsMan> yeah[20:08:41] <Stragus> Just use the elements which are expected to be defined for your texture[20:10:34] <aethersis> vec4 C = texture2D(vUV - vec2(stepX, 0)); doesn't work[20:10:47] <HuntsMan> aethersis: where is the sampler?[20:10:50] <aethersis> I will explain[20:11:07] <aethersis> I have vertex UV coordinates as from 0 to 1[20:11:15] <HuntsMan> you don't have to, that code is missing parameters[20:11:18] <aethersis> and the image is let's say 512x768[20:11:39] <aethersis> ah wait XD[20:11:44] <aethersis> uniform sampler2D textureMap;[20:11:52] <aethersis> how do I do that with this texture2D call[20:12:08] <HuntsMan> same as you use texelFetch?[20:12:17] <HuntsMan> texture2D(textureMap, uvCoords)[20:12:28] <HuntsMan> and if you use modern GL, you use texture() instead[20:12:49] <aethersis> jesus im so dumb xD[20:12:50] <aethersis> overworked[20:14:09] <aethersis> yeah it's working[20:14:14] <aethersis> but looks like something is very wrong with my code[20:14:43] <aethersis> i do this:[20:14:44] <aethersis> vFragColor = texture2D(textureMap, vUV );[20:14:54] <aethersis> and it draws a smaller image[20:15:25] *** snakenerd has joined ##OpenGL[20:17:58] *** HunterD has quit IRC[20:18:08] *** roboman2444 has joined ##OpenGL[20:18:17] *** Dudi has quit IRC[20:22:40] *** pazul has quit IRC[20:25:50] *** mejid has joined ##OpenGL[20:28:18] *** Crehl has joined ##OpenGL[20:28:47] *** xissburg has quit IRC[20:30:08] *** foobaz has quit IRC[20:31:44] *** doboo has joined ##OpenGL[20:33:20] *** Dudi has joined ##OpenGL[20:33:56] *** mejid has quit IRC[20:34:44] *** Mejid has joined ##OpenGL[20:34:56] *** pazul has joined ##OpenGL[20:35:52] *** dshwang_ has joined ##OpenGL[20:37:16] *** dshwang has quit IRC[20:44:57] *** SHLV has joined ##OpenGL[20:47:19] *** Viata has quit IRC[20:49:11] *** agorecki has joined ##OpenGL[20:52:36] *** RyanPridgeon_ has joined ##OpenGL[20:56:06] *** RyanPridgeon has quit IRC[21:03:25] <Yaniel> texture2D takes normalized uv coordinates[21:04:04] *** konom has quit IRC[21:05:11] *** Folkol has quit IRC[21:11:56] *** telex has quit IRC[21:12:47] *** telex has joined ##OpenGL[21:16:23] *** gaganjyot has quit IRC[21:18:02] *** pizthewiz has quit IRC[21:19:06] *** RyanPridgeon_ has quit IRC[21:23:12] *** Garner has quit IRC[21:28:08] *** foreignFunction has quit IRC[21:31:01] *** bkre_ has joined ##OpenGL[21:35:51] *** konom has joined ##OpenGL[21:42:49] *** ragecryx has joined ##OpenGL[21:43:22] *** RyanPridgeon has joined ##OpenGL[21:43:50] *** BlackFox has joined ##OpenGL[21:46:00] *** BitPuffin has quit IRC[21:47:59] *** pazul has quit IRC[21:53:53] *** derhass has joined ##OpenGL[21:54:33] *** tehrain has quit IRC[21:57:20] *** Syzygy_ has joined ##OpenGL[21:57:30] *** CainJacobi has joined ##OpenGL[21:58:31] <aethersis> Yaniel, the code is working, but everything screws up when I resize window[22:01:54] *** Sos has joined ##OpenGL[22:02:51] *** mat^2 has quit IRC[22:04:05] <Stragus> aethersis, what windowing toolkit are you using?[22:04:09] <aethersis> glut[22:04:15] <aethersis> *freeglut[22:04:21] <Stragus> Generally, on most platforms, resizing the window implies having to destroy and recreate the context[22:04:31] <Stragus> And losing all textures, VBOs, etc.[22:05:59] *** paul424 has joined ##OpenGL[22:06:04] <derhass> what platforms would that be?[22:06:18] <aethersis> linux[22:06:26] <paul424> HEllo could you translate the unreal engine 1 features to ENglish :P http://www.moddb.com/engines/unreal-engine-1[22:07:03] *** mat^2 has joined ##OpenGL[22:07:08] <derhass> aethersis: well, I asked Stragus[22:07:20] <derhass> aethersis: what he says is definitively not the case on linux[22:07:34] <paul424> Supports raytraced and enveloped lighting[22:07:41] <paul424> Whta's enveloped lighting ?[22:07:43] <aethersis> it's very funny because everytime glutPostRedisplay is called, the rendered image takes 1/4 of screen[22:07:46] <aethersis> and it's like feedback[22:07:55] <aethersis> then it's 1/4 of the 1/4 image and so on[22:07:58] <Stragus> Besides OS limitations, it might be just the toolkit used too, automatically destroying and recreating the context[22:08:03] <Stragus> I know SDL does that on any platform[22:08:12] <paul424> ClipTexturing ... What does it mean ?[22:08:52] <aethersis> fucking dumb glut[22:09:00] <aethersis> but maybe it's something wrong with my code again[22:09:10] <paul424> Dynamic range scaled detail textures == textures' Lods ?[22:09:42] <paul424> Decal support , what's that ?[22:10:02] *** foreignFunction has joined ##OpenGL[22:11:09] <Stragus> aethersis, I recommend GLFW. I believe it does the glShareLists magic to preserve a context's content to the newly created context on any OS[22:12:00] <paul424> Light bloom , what's that ?[22:12:50] <Stragus> paul424: http://en.wikipedia.org/wiki/Bloom_%28shader_effect%29[22:13:04] <paul424> yeah I just googled that[22:14:11] <aethersis> I figured out what's going on[22:14:18] <aethersis> it doesn't even depend on rescaling window[22:14:27] <aethersis> it is occured by window size being different than image size[22:14:31] <aethersis> that's even more stupid[22:14:50] <paul424> decals support == projective textures ?[22:14:53] <paul424> or something ?[22:14:58] <derhass> just decals[22:15:07] <paul424> ahh that you can damage some surface ...[22:15:14] <paul424> add an texture on top of it[22:15:20] <derhass> not damage. just put decals on the surfaces[22:16:21] <paul424> Distance fog -- ? what's the diff between native opengl fog ?[22:17:00] <Stragus> Fixed pipeline's fog is gone, implement it yourself, distance would be the typical way[22:17:30] *** _leb has joined ##OpenGL[22:17:34] <paul424> naah that's a feature of UE 1 , so what was the tricky part done by the engine than ?[22:18:30] <Stragus> No idea, never played UE 1[22:18:35] <aethersis> is there such a thing as FBO dimensions?[22:18:56] <aethersis> FBO is independent on screen size, right?[22:18:59] <aethersis> *window size[22:19:02] <HuntsMan> aethersis: FBO attachments have dimensions[22:19:06] *** cr`nge has quit IRC[22:19:09] <paul424> http://www.moddb.com/engines/unreal-engine-1 = UE 1 , Stragus[22:19:15] <aethersis> but the texture size is not supposed to change, I don't change it[22:20:14] <derhass> paul424: why do you think there is a tricky part?[22:20:38] <paul424> WHy would they claim it to be a feature of theier engine ?[22:20:42] *** Demon_Fox has joined ##OpenGL[22:20:46] <derhass> paul424: because it is[22:20:55] <derhass> it is an engine, not a rendering API[22:21:17] <aethersis> it's absurd!!!![22:21:32] <aethersis> when window size is the same like loaded image / texture size, then everything ok[22:21:42] <aethersis> if it's different then the texture either shrinks or grows progressively[22:21:43] <aethersis> wtf[22:22:07] <derhass> aethersis: you're probably doing something wrong[22:22:18] <aethersis> it just uhhh!!!![22:22:22] <aethersis> it blows my mind wtf[22:23:03] <HuntsMan> aethersis: have you pastebin code?[22:23:09] <aethersis> yes[22:23:12] *** doboo has quit IRC[22:23:19] <Stragus> Textures or FBOs should be completely independent from your window's frame buffer[22:23:23] <Stragus> Better paste some code, yes[22:23:28] <aethersis> http://pastebin.com/rwsWMZB0[22:23:40] <aethersis> and they are, it's just some crazy bullshit, that blows my mind!!![22:23:56] <dawik> aethersis: that is what opengl is like :)[22:24:01] <paul424> ClipTexturingn == what's that[22:24:02] <dawik> working with opengl*[22:24:37] <derhass> paul424: can you use google?[22:24:43] <derhass> paul424: https://developer.valvesoftware.com/wiki/Clip_texture[22:25:18] <paul424> hmm I always find the answers from here to be more accurate than the google's[22:25:22] <paul424> ok thansk[22:27:37] <paul424> hmm clip textures are bad names for it , cause the textures are suuposed to store some texels[22:28:03] <paul424> Clip textures are invisible tool textures that limit movement, typically of the player(s). A brush used with a clip texture is generally termed a clip brush. In the Source engine, the general dedicated clip texture is Clip,[22:28:26] *** Garner has joined ##OpenGL[22:29:04] *** roboman2444 has quit IRC[22:29:12] <aethersis> http://pastebin.com/rwsWMZB0[22:29:18] <aethersis> maybe the textures are improperly initialized?[22:30:07] <HuntsMan> aethersis: can you also post the shaders?[22:30:14] <aethersis> sure[22:31:19] <aethersis> http://pastebin.com/HqM01p0e[22:33:56] <aethersis> any ideas?[22:36:31] *** Tobbi has joined ##OpenGL[22:37:01] <Tobbi> What could be the problem when glBufferStorage crashes with a NULL reference exception?[22:37:08] <HuntsMan> mmm no[22:37:19] <aethersis> is that suposed to work fine?[22:38:34] *** qeed has joined ##OpenGL[22:39:21] <aethersis> when I call glViewport, everything screws up as well[22:39:23] <derhass> Tobbi: not having loaded that function pointer[22:39:49] <Tobbi> derhass: What do I need to do? It seems like it's only crashing on OS X. And, nice nickname, by the way.[22:40:31] <derhass> Tobbi: well, it certainly crashes on OSX because OSX does not supprt that[22:40:55] <Tobbi> OS X does not support glBufferStorage?[22:41:11] <derhass> that's a GL4.4 feature[22:41:21] <HuntsMan> Core in version 4.4 <-[22:41:28] <Tobbi> Ah! Thanks.[22:42:15] <Tobbi> Is there something I can use instead, by the way?[22:42:43] *** snakenerd has quit IRC[22:42:46] <derhass> Tobbi: depends on what you use it for[22:42:53] <slime> glBufferData / glBufferSubData / glMapBufferRange[22:43:13] <derhass> yeah[22:43:29] <Tobbi> I didn't write the code unfortunately. I am just trying to fix a crash issue for an open source project to get the program running.[22:44:15] <derhass> Tobbi: hard to tell without context[22:44:23] <slime> which project?[22:45:07] <Tobbi> derhass: https://github.com/supertuxkart/stk-code/blob/master/src/graphics/render.cpp#L691[22:45:12] <Tobbi> And slime as well ^^[22:45:26] <derhass> supertuxkart uses gl 4.4 nowadays?[22:45:34] <Tobbi> Apparently?[22:45:59] *** Viata has joined ##OpenGL[22:46:07] <derhass> ok, "UpdateSplitAndLightcoordRangeFromComputeShaders"[22:46:11] <derhass> so it uses compute shaders[22:46:28] *** SHLV has quit IRC[22:47:00] *** _leb has quit IRC[22:47:05] <derhass> so no way this ids going to work on current OSX[22:47:08] <derhass> *is[22:47:27] <Tobbi> Alright.[22:47:52] *** Waynes has quit IRC[22:52:01] *** Viata has quit IRC[22:54:26] <derhass> aethersis: you don't set viewports in a usable way[22:54:35] <aethersis> how should I do that[22:54:47] <derhass> matching the size of your framebuffer[22:54:59] <derhass> especially when rendering into a texture which is a different resolution[22:56:38] *** Tobbi has left ##OpenGL[22:57:39] <aethersis> how do I do that[22:59:31] <derhass> glViewport[22:59:55] *** Keniyal has joined ##OpenGL[23:01:03] <aethersis> there is a glViewport call[23:01:11] <aethersis> and it breaks everything[23:01:23] <derhass> because it is totally wrong[23:01:37] <derhass> you need to set the viewport to the size of the tezxture when rendering into the texture[23:01:55] <derhass> and then you have to set the viewport to the window size when rendering into the default fb[23:02:41] <aethersis> ahhhh[23:02:42] <aethersis> <3[23:02:44] *** BreadProduct has joined ##OpenGL[23:03:29] *** jdolan has quit IRC[23:04:25] *** foreignFunction has quit IRC[23:05:44] *** stefkos has quit IRC[23:07:01] <aethersis> derhass, you are a genius[23:07:07] <aethersis> now can you explain how and why's that working?[23:07:33] <derhass> aethersis: well, the viewport controls what part of the framebuffer you render to[23:07:45] <derhass> aethersis: so if you want to render to the full area, you have to set it that way[23:07:49] <aethersis> XD[23:08:06] <derhass> I don't know what else I could explain here[23:08:18] <derhass> it should be quite obvious, I think[23:08:21] *** roboman2444 has joined ##OpenGL[23:08:32] *** leb has joined ##OpenGL[23:09:43] <aethersis> yeah now it is[23:09:52] <aethersis> I just took a different approach to learning opengl[23:10:22] <aethersis> I could either choose learning slowly step by step and reading documentation, which would repel me for the 4th time[23:10:53] <aethersis> or I could choose brute-force approach for the first time, so I did and at least it's a little bit rewarding :D[23:11:12] <aethersis> It's the 4th time I'm attempting to learn the modern OpenGL[23:17:06] *** pizthewiz has joined ##OpenGL[23:18:59] <aethersis> what's faster? texture() or texelFetchOffset?[23:19:19] <aethersis> I made everything independent on texture size now[23:20:06] <aethersis> it kinda doesn't even care about image size - for 1024x1024 it's as fast as for 512x512 : 5000 fps!!![23:20:09] <derhass> those are completely different things[23:20:19] <aethersis> I made them do the same thing![23:20:41] <aethersis> http://pastebin.com/9PefuJxK[23:20:49] <aethersis> instead of texelFetchOffset I use texture here[23:21:27] <derhass> that is still not the same thing[23:21:32] <aethersis> before it looked like this: http://pastebin.com/RcU5w6LC[23:21:45] <derhass> texture() will use the full sampler state, while texturefetch will bypass it[23:21:51] *** wilornel has quit IRC[23:22:11] <aethersis> it's really funny that you can implement convolution filters in such the way, instead of playing with matrices[23:22:25] <aethersis> once I discovered it, it completely changed my view on many numerical methods[23:22:50] <aethersis> i.e. jacobi method for solving poisson differential equation also bases on convolution matrix N,S,W,E = 1[23:23:15] <derhass> uhm? using a matrix kernel is just a more general approach than what you are doing[23:24:07] <paul424> http://en.wikipedia.org/wiki/Lens_flare How such artifacts exists in photography ?[23:25:29] <aethersis> yeah but I didn't know both things give the same result[23:25:36] <aethersis> I never thought about it like that until now[23:26:03] *** foobaz has joined ##OpenGL[23:27:57] *** newguise1234 has quit IRC[23:27:57] *** newguise1234 has joined ##OpenGL[23:29:10] <aethersis> I loaded 6000 x 6000 image and it's still 5000 fps is that possible?![23:30:18] <derhass> it is totally unclear what you are doing[23:31:10] *** Lemml has quit IRC[23:31:31] <aethersis> edge detection filter[23:31:38] <aethersis> on 36mpix image[23:31:51] <aethersis> it does it progressively[23:32:00] <aethersis> and it runs 5000 times per second[23:32:09] <aethersis> this gpu is a beast wtf, how can it be so fast[23:32:17] <aethersis> if I did it in GIMP, it would take something like 1 minute[23:32:39] *** TunnelCat has joined ##OpenGL[23:32:46] <derhass> 5000 fps seem a bit unrealsitic now with that resolution[23:33:30] *** slime has quit IRC[23:33:38] <aethersis> but it really works immediately[23:33:42] <aethersis> I made it run on key press[23:33:47] <aethersis> there's no noticeable delay[23:33:52] <aethersis> it's like ZOOOM! done![23:34:10] <aethersis> how fast are these gpus now[23:34:12] <aethersis> I can't believe it[23:34:26] <derhass> well, .0002s and "no noticable delay" is something different[23:34:38] <derhass> you wouldn't notice 0.02 either[23:35:03] *** slime has joined ##OpenGL[23:35:48] <aethersis> I will try loading 200 Mpix image :D[23:35:52] <aethersis> XD[23:36:02] <derhass> aethersis: I don't know what you measure, and how you measure it[23:36:10] <derhass> aethersis: but you probably scred it up[23:36:32] <newguise1234> paul424: Lens flare is the light scattered in lens systems through generally unwanted image formation mechanisms, such as internal reflection and scattering from material inhomogeneities in the lens.[23:36:38] <aethersis> http://pastebin.com/k6wKfBAi[23:36:45] <newguise1234> paul424: is the first sentence in the link you posted[23:36:47] <aethersis> take a look at the OnRender() function[23:37:11] <aethersis> I think I measure it properly[23:37:38] <aethersis> I did it in exactly the same way on gl program running entirely on CPU and it was giving right results[23:37:44] <derhass> aethersis: start=clock(); render& swap; stop=clock()? LOL[23:38:00] *** Dudi has quit IRC[23:38:04] <derhass> aethersis: that's measuring the moon phase as exactly as it is measuring the rendering performance[23:38:17] <aethersis> how do I measure it then[23:38:44] <derhass> aethersis: gl timer queries would be one way[23:39:16] <derhass> but even when you try to measure it solely on the client side, don't use clock()[23:39:23] <aethersis> but anyway, this performance is far beyond my greatest expectations ! it's much faster than I imagined[23:39:32] <aethersis> I see[23:41:17] *** Zupoman has quit IRC[23:41:17] *** Misu has quit IRC[23:41:18] <derhass> since you only measured the cpu time with this, it is no wonder that it is independent of the texture resolution[23:43:59] *** ShadowIce has quit IRC[23:44:10] *** BitPuffin has joined ##OpenGL[23:44:22] *** zerocool has joined ##OpenGL[23:44:46] *** zerocool is now known as Guest57267[23:44:54] *** Mejid has quit IRC[23:44:58] *** Guest57267 is now known as neozero[23:45:32] *** neozero is now known as zerokool[23:48:41] *** aethersis has quit IRC[23:48:58] *** LifeBlood has quit IRC[23:49:31] *** jdolan has joined ##OpenGL[23:49:50] *** Rutix has quit IRC