May 30, 2008 
< | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | >
May 30, 2008 [00:01:58] *** marcheu has quit IRC[00:04:05] *** LordMetroid has joined ##OpenGL[00:09:05] *** KU0N has joined ##OpenGL[00:09:13] <KU0N> hello[00:10:14] <KU0N> To add shadow on spaceships, what technique would you use? Each ships cast shadow on itself and is lighted by one light source the sun.[00:10:37] *** blbmp has quit IRC[00:11:53] <MatthiasM> KU0N: only self shadowing ?[00:12:27] <KU0N> yea[00:12:33] <KU0N> other ships will be too far[00:12:51] <MatthiasM> then use a 16bit depth shadow map with znear/zfar set to just the bounding box of your space ship[00:13:02] <KU0N> maybe stations, but for this, I can use very rough algo (basically, you are behind it or not)[00:13:07] <MatthiasM> and only do shadows for ships near the camera[00:13:21] <MatthiasM> good idea[00:13:35] <KU0N> it's mostly for the ships the player is piloting[00:13:51] <KU0N> the ship*[00:14:14] *** marcheu has joined ##opengl[00:15:05] <KU0N> MatthiasM: you mean I render from the light point of view into a depth texture, then I use it during my render?[00:15:13] <MatthiasM> yes[00:15:40] *** blbmp has joined ##OpenGL[00:16:16] <KU0N> I should use FBO? (the engine does not need to be compatible with older hardware, but it needs to be ready for the future)[00:17:05] <MatthiasM> yes[00:17:15] <KU0N> ok, this is what I thought[00:17:31] <MatthiasM> post screenshots once it's in :)[00:18:00] *** Tuxiscool has joined ##OpenGL[00:18:42] <KU0N> in fact, I can simply have a loop, creating a shadow depth texture for each ship that will have shadow (player ship and very close ones). I setup FBO, load the correct matrix, draw my ship, and voilà[00:18:57] *** RTFM_FTW has joined ##OpenGL[00:20:30] <KU0N> Or would you render all ships that has to be shadowed in one pass?[00:21:24] *** Dew420 has joined ##OpenGL[00:21:38] <lexs> prophile: hehe, i've seem to have gotten hang on it now :)[00:21:40] <lexs> ie it works[00:22:10] *** Tuxiscool has quit IRC[00:22:48] *** stringfellow has quit IRC[00:24:09] *** bbeausej has quit IRC[00:24:59] *** lordmetroid_ has joined ##OpenGL[00:27:52] *** servus has joined ##opengl[00:28:06] *** thomash_ has quit IRC[00:37:11] <RTFM_FTW> actually in a GLSL shader like this (http://paste.lisp.org/display/61432 -- a slightly cleaner version of the one linked earlier in this channel) since the compiler knows the terminating condition of both loops at compile time it can unroll during a optimization pass if its necessary to do so[00:37:47] <RTFM_FTW> you do run a risk of generating more texture instructions than a given ASIC might be capable of with such a shader though[00:38:07] <RTFM_FTW> (that being true on fairly old hardware... anything current won't have this problem)[00:39:30] <RTFM_FTW> furthermore you are generating *many* texture fetches in this shader and those (w/o ALU ops to hide latency) are expensive[00:40:47] <RTFM_FTW> especially true with current generation hardware when looking for performance gains in the programmable pipeline prefer math over texture sampling[00:41:16] *** LordMetroid has quit IRC[00:43:25] *** servus_ has quit IRC[00:48:08] *** BahamutZERO has quit IRC[00:48:58] <RTFM_FTW> GL_OES_framebuffer_object would be the FBO extension[00:50:06] <Xmas|> no pbuffers[00:53:42] <RTFM_FTW> Hmm? pbuffer definitely isn't a preferred path[00:54:15] <RTFM_FTW> in any case as I said FBO is supported and I'd imagine that the latest SDK docs discuss this so use it[00:54:43] <KU0N> yea FBO are simple to use:)[00:55:56] *** ginoman has joined ##OpenGL[00:56:04] *** hibread has quit IRC[00:56:59] *** hibread has joined ##opengl[00:59:55] *** hibread has quit IRC[01:01:11] *** hibread has joined ##opengl[01:03:10] <prophile> hey RTFM_FTW[01:03:17] <prophile> I love your descriptive variable names[01:03:22] *** dv_ has quit IRC[01:03:27] <prophile> T0, T1, and T2[01:04:06] *** hibread has quit IRC[01:04:35] <RTFM_FTW> meh you should see what the underlying ASM looks like[01:04:46] *** hibread has joined ##opengl[01:06:56] *** lordmetroid__ has joined ##OpenGL[01:10:19] *** hibread has quit IRC[01:11:43] *** hibread has joined ##opengl[01:14:36] *** hibread has quit IRC[01:15:52] *** hibread has joined ##opengl[01:17:13] *** Xmas| has quit IRC[01:18:46] *** hibread has quit IRC[01:19:52] *** hibread has joined ##opengl[01:20:16] *** prophile has quit IRC[01:22:49] *** hibread has quit IRC[01:23:58] *** lordmetroid_ has quit IRC[01:24:13] <RTFM_FTW> for the shader I posted above here is a manually optimized version (what can I say... I'm bored) -- http://paste.lisp.org/display/61432#2[01:24:26] *** Eforen has joined ##opengl[01:24:37] *** hibread has joined ##opengl[01:24:49] <RTFM_FTW> eliminating the loops and a great many redundant operations[01:25:00] *** Dew420 has quit IRC[01:25:08] <RTFM_FTW> as you can clearly see this specific shader is entirely fetch limited[01:26:14] <MatthiasM> are you sure that the unrooled loop fetches the same samples ?[01:26:55] <RTFM_FTW> note the original loop[01:27:00] <RTFM_FTW> so yes[01:27:31] <MatthiasM> shouldn't it be T1 + vec2(....) ?[01:27:33] *** hibread has quit IRC[01:27:38] <MatthiasM> *T0[01:28:56] *** hibread has joined ##opengl[01:29:25] <RTFM_FTW> ah yep... my typo[01:29:27] *** elite01 has quit IRC[01:29:40] <RTFM_FTW> in any case that doesn't change the fact that its entirely fetch limited[01:29:49] <MatthiasM> :)[01:30:00] <RTFM_FTW> and furthermore there isn't enough ALU work to keep from being so[01:30:35] <RTFM_FTW> oh well I worked for 15 hours straight today so I'm tired... very fucking tired[01:30:46] <MatthiasM> time for sleep then :)[01:31:22] *** hibread has quit IRC[01:32:39] *** hibread has joined ##opengl[01:34:17] *** Dew420 has joined ##OpenGL[01:34:33] *** m4ggus_ has joined ##opengl[01:35:13] *** m4ggus has quit IRC[01:35:17] *** m4ggus_ is now known as m4ggus[01:35:32] *** hibread has quit IRC[01:35:39] *** MatthiasM has quit IRC[01:35:44] *** MatthiasM has joined ##opengl[01:36:41] *** hibread has joined ##opengl[01:38:58] *** amz has joined ##opengl[01:39:36] *** hibread has quit IRC[01:40:29] *** hibread has joined ##opengl[01:41:53] *** amalon has quit IRC[01:43:31] *** hibread has quit IRC[01:45:05] *** hibread has joined ##opengl[01:46:37] *** TheLorax has joined ##opengl[01:47:58] *** hibread has quit IRC[01:49:58] *** hibread has joined ##opengl[01:50:26] *** speedy1 has quit IRC[01:52:54] *** hibread has quit IRC[01:54:14] *** hibread has joined ##opengl[01:57:00] *** kaotrix has joined ##OpenGL[01:57:11] *** hibread has quit IRC[01:58:14] *** replor has joined ##OpenGL[01:58:34] *** hibread has joined ##opengl[02:01:30] *** hibread has quit IRC[02:03:49] *** hibread has joined ##opengl[02:06:44] *** hibread has quit IRC[02:07:35] *** hibread has joined ##opengl[02:08:25] *** TheLorax has quit IRC[02:09:47] *** clintar has joined ##OpenGL[02:10:31] *** hibread has quit IRC[02:10:51] *** LiQuiDninja has quit IRC[02:11:29] *** hibread has joined ##opengl[02:14:08] <RTFM_FTW> mmm Steak for dinner... woohoo[02:14:23] *** hibread has quit IRC[02:14:34] <RTFM_FTW> BTW here is a correct version of what I mentioned earlier -- http://pastie.caboo.se/205742[02:15:38] *** adhv_ has joined ##OpenGL[02:16:53] *** hibread has joined ##opengl[02:19:14] *** hibread has quit IRC[02:20:12] *** hibread has joined ##opengl[02:23:05] *** hibread has quit IRC[02:25:42] *** hibread has joined ##opengl[02:26:55] *** vasoq has quit IRC[02:28:06] *** futurestack has quit IRC[02:30:32] *** adhv has quit IRC[02:32:12] *** hibread has quit IRC[02:34:17] *** hibread has joined ##opengl[02:34:39] *** lordmetroid__ has quit IRC[02:35:31] *** lordmetroid__ has joined ##OpenGL[02:37:07] *** hibread has quit IRC[02:37:55] *** hibread has joined ##opengl[02:39:02] *** HuntsMan has joined ##opengl[02:40:16] *** bbeausej has joined ##OpenGL[02:44:47] *** hibread has quit IRC[02:46:20] *** hibread has joined ##opengl[02:48:18] *** TheChuckster has joined ##OpenGL[02:49:12] *** hibread has quit IRC[02:49:55] *** Ragnarok has quit IRC[02:51:09] *** hibread has joined ##opengl[02:53:12] *** mm765^away is now known as mm765[02:54:03] *** hibread has quit IRC[02:56:05] *** hibread has joined ##opengl[02:58:50] *** higgsfett has quit IRC[02:58:55] *** hibread has quit IRC[03:00:13] *** hibread has joined ##opengl[03:03:12] *** hibread has quit IRC[03:04:57] *** dvoid has quit IRC[03:05:11] *** hibread has joined ##opengl[03:07:44] *** hibread has quit IRC[03:08:53] *** hibread has joined ##opengl[03:12:06] *** hibread has quit IRC[03:13:47] *** hibread has joined ##opengl[03:16:45] *** hibread has quit IRC[03:18:30] *** hibread has joined ##opengl[03:19:24] *** bbeausej has quit IRC[03:20:51] *** hibread has quit IRC[03:21:40] *** Morphous has quit IRC[03:21:51] *** hibread has joined ##opengl[03:22:45] *** Morphous has joined ##opengl[03:24:45] *** hibread has quit IRC[03:25:57] *** hibread has joined ##opengl[03:28:56] *** hibread has quit IRC[03:29:23] *** juanmabc has quit IRC[03:30:22] *** hibread has joined ##opengl[03:33:18] *** hibread has quit IRC[03:34:08] *** adhv_ has quit IRC[03:34:08] *** hibread has joined ##opengl[03:34:37] *** Walt has quit IRC[03:36:38] *** lordmetroid__ has quit IRC[03:37:03] *** hibread has quit IRC[03:39:19] *** hibread has joined ##opengl[03:42:11] *** hibread has quit IRC[03:43:06] *** hibread has joined ##opengl[03:46:03] *** hibread has quit IRC[03:46:49] *** hibread has joined ##opengl[03:49:47] *** hibread has quit IRC[03:50:08] *** rnx has left ##opengl[03:51:09] *** hibread has joined ##opengl[03:52:26] *** Grizzly_ has joined ##opengl[03:53:52] *** hibread has quit IRC[03:54:42] *** hibread has joined ##opengl[03:55:19] *** hibread has quit IRC[03:55:42] *** rsaltini has quit IRC[04:06:39] *** KU0N has quit IRC[04:13:32] *** hibread has joined ##opengl[04:14:06] *** Grizzly` has quit IRC[04:20:24] *** TheChuckster has quit IRC[04:23:27] *** m4ggus has quit IRC[04:24:07] *** m4ggus has joined ##opengl[04:38:37] *** BahamutZERO has joined ##OpenGL[04:41:10] *** RTFM_FTW has quit IRC[04:42:26] *** TheLorax has joined ##opengl[04:45:20] *** m4ggus has quit IRC[04:49:56] *** PainBank has joined ##OpenGL[05:03:10] *** sup has joined ##opengl[05:03:22] <sup> can you do transformations on gluLookAt?[05:07:33] <hibread> sup: what do you mean? Can you call gluLookAt() then something like glTranslate() straight after?[05:07:58] <sup> i want an in car camera basically[05:08:19] <sup> i can get the gluLookAt to travel with the car, but when i turn the car, my COI gets all screwy[05:08:24] <hibread> al you neeed to know is that gluLookAt modifies the glModelViewMatrix[05:09:51] *** rutski has joined ##OpenGL[05:13:09] *** BahamutZERO has quit IRC[05:23:27] *** hibread has quit IRC[05:25:59] <sup> i still cant calculate the COI[05:26:11] <sup> my COI stays the same while the vehicle rotates[05:32:56] *** Dew420 has quit IRC[05:33:38] *** Dew420 has joined ##OpenGL[05:35:05] *** Dew420 has quit IRC[05:35:29] *** Dew420 has joined ##OpenGL[05:40:35] *** sup has quit IRC[05:44:51] *** enoex_ has quit IRC[05:46:16] *** kiras has joined ##OpenGL[05:51:34] *** ginoman is now known as ginosleep[06:01:18] *** TheLorax has quit IRC[06:02:39] *** itzsid has joined ##OpenGL[06:03:58] <itzsid> Hi, is there a method to load 3ds models in opengl, with good performance[06:14:44] *** itzsid has quit IRC[06:14:57] *** itzsid has joined ##OpenGL[06:16:53] <itzsid> Hi, nybody here[06:17:30] <itzsid> Hi, is there a method to load 3ds models in opengl, with good performance[06:17:37] <HuntsMan> no[06:17:53] *** PainBank has quit IRC[06:25:00] *** mastro has quit IRC[06:33:43] *** selimeki_ has joined ##OpenGL[06:34:02] <selimeki_> hi people[06:34:05] <selimeki_> ant opengl gurus here?[06:34:08] <selimeki_> i need instant help[06:34:37] <HuntsMan> just ask your question[06:35:06] <selimeki_> i need to convert corrdinates that i take from my webcam as input to opengl corrdinates[06:35:35] <selimeki_> i know how to convert the mouse coordinates, but the function doesn't work for me[06:35:41] <HuntsMan> there's no opengl coordinates concept[06:35:55] <selimeki_> i mean world corrdinates[06:36:03] <selimeki_> or whatever they are called[06:36:10] <HuntsMan> the same applies[06:36:21] <HuntsMan> world/model/object/view coordinates are what exactly you want[06:36:29] <selimeki_> the thing is[06:36:48] <selimeki_> i'm working on a multi-tocuh table like the one of jeff han[06:36:50] <selimeki_> touch*[06:37:02] <selimeki_> i need to drag the photos and move them[06:37:33] <selimeki_> however, i can't drag them because the converted coordinates are not correct[06:37:58] <mm765> and where is the difference between your finger and a mousepointer in that context ?[06:38:09] <selimeki_> actually there shouldn't[06:38:18] <mm765> actually there isnt[06:38:22] <selimeki_> but the code doesn't work[06:38:27] <mm765> lol[06:38:32] <mm765> that much is obvious[06:38:44] <HuntsMan> selimeki_: did you use gluProject()/[06:38:46] <HuntsMan> ?[06:38:54] <selimeki_> yes[06:38:59] <selimeki_> and it worked for mouse corrdinates[06:39:13] <selimeki_> now the coordinates i'm passing are the same[06:39:24] <selimeki_> but it doesn't work correctly[06:40:12] <MatthiasM> itzsid: there are enough 3ds loaders out there - just STW[06:41:10] <itzsid> yeah....i tried out lib3ds...but it was not up to the mark[06:42:43] <itzsid> i want openscene graph like functionalities but rendering should be done through opengl[06:43:34] <MatthiasM> OSG uses OpenGL[06:47:34] <itzsid> for that i need to overload their built in functions[06:47:56] <itzsid> is there any easy way for the same[06:48:16] *** Ragnarok has joined ##OpenGL[06:48:47] <MatthiasM> itzsid: you doesn't make sense - I suggest that you READ what OSG is, and maybe take a look a libs like Ogre3D too[06:49:08] <itzsid> ok, thanks[06:51:41] *** itzsid has quit IRC[07:00:33] *** mm^away has joined ##opengl[07:16:34] *** mm765 has quit IRC[07:20:18] *** groton has joined ##OpenGL[07:25:33] *** cit has quit IRC[07:25:35] *** cit has joined ##OpenGL[07:27:12] *** selimeki has joined ##OpenGL[07:27:44] *** amz has quit IRC[07:31:46] *** selimeki has quit IRC[07:31:50] *** ginosleep has quit IRC[07:39:43] *** RTFM_FTW has joined ##OpenGL[07:45:36] *** selimeki_ has quit IRC[07:52:50] *** Bladezor has joined ##OpenGL[08:00:48] <Ragnarok> i don't understanf glArrayElement[08:17:03] <Ragnarok> i got it nevermind[08:23:37] *** groton has quit IRC[08:29:46] *** Gudy has joined ##OpenGL[08:34:44] *** Roderic has joined ##OpenGL[08:34:44] *** Roderic is now known as Ingenu[08:41:10] *** polywaffle has joined ##OpenGL[08:41:23] <polywaffle> how do i get the gears test up?[08:43:19] <HuntsMan> glxgears?[08:51:41] *** andikr has joined ##OpenGL[08:52:40] *** cit_ has joined ##OpenGL[09:09:29] *** belou has joined ##OpenGL[09:10:08] *** cit has quit IRC[09:11:14] *** jerkface03 has quit IRC[09:11:16] *** jerkface0 has joined ##OpenGL[09:12:43] *** jerkface0 has quit IRC[09:12:54] *** jerkface03 has joined ##OpenGL[09:22:22] <polywaffle> thanks for that[09:23:16] *** Maketwo has joined ##OpenGL[09:23:25] *** sohail has quit IRC[09:23:52] *** Makegho has quit IRC[09:24:17] *** [AD]Turbo has joined ##OpenGL[09:26:22] <[AD]Turbo> hi[09:36:17] *** groton has joined ##OpenGL[09:37:49] <[AD]Turbo> ciao groton[09:37:59] <groton> ciao[09:39:35] *** cit_ has quit IRC[09:39:37] *** cit has joined ##OpenGL[10:09:00] *** lolage0 has quit IRC[10:11:19] *** kenws has joined ##OpenGL[10:12:48] *** blbmp has quit IRC[10:17:22] *** dvoid has joined ##OpenGL[10:17:28] *** caro[vtorri] has left ##OpenGL[10:51:17] *** rsaltini has joined ##OpenGL[10:57:28] *** selimeki has joined ##OpenGL[10:57:30] *** rsaltini has quit IRC[10:57:35] <selimeki> hey people[10:57:46] <selimeki> i need instant help[10:57:55] <selimeki> got to present my project in a few hours and i'm not done yet[10:58:05] <selimeki> can anyone help?[10:59:14] <Weiss> selimeki: eek[10:59:44] <groton> selimeki, shot[10:59:50] <groton> selimeki, not to your self[11:00:15] *** BahamutZERO has joined ##OpenGL[11:00:29] <selimeki> i drag some pictures on the canvas. when i click and drag them, there should be drawn a sphere ob the position of the cursor[11:00:48] <selimeki> i calculate the opengl coordinates of the mouse (glunproject stuff)[11:01:02] <selimeki> if a click on the images it works perfectly[11:01:04] *** scy has joined ##opengl[11:01:31] <selimeki> however if i click somewhere else, the opengl coordinates are calculated incorrect even if i pass correct screen coordinates.[11:02:04] <selimeki> and when the cursor and the sphere meet it follows the mouse[11:02:15] <selimeki> i can't understand what's going on[11:02:26] <Weiss> selimeki: some kind of divison by zero due to not having anything to click on? work through the maths by hand[11:03:01] <selimeki> on every click and move i record the x and y coordinates of the mouse[11:03:32] <selimeki> and on the display callback function i translate by x and y of the cursor position and draw the sphere[11:04:12] <selimeki> when i click on an image everything works as supposed[11:04:14] *** ahelon has quit IRC[11:07:52] *** korff has joined ##OpenGL[11:08:59] *** scy has left ##opengl[11:15:07] *** Suprano has joined ##OpenGL[11:16:45] <selimeki> fixed it[11:36:38] *** prophile has joined ##opengl[11:40:53] *** fargiolas has joined ##OpenGL[11:40:56] <Weiss> selimeki: congratulations[11:41:04] *** selimeki has quit IRC[11:48:08] *** gotan666 has joined ##OpenGL[11:52:12] *** Hypnosekroete has quit IRC[11:52:27] *** Hypnosekroete has joined ##OpenGL[11:57:05] *** rsaltini has joined ##OpenGL[11:58:07] *** marcheu has quit IRC[11:59:19] *** Ademan has quit IRC[12:00:24] *** Ademan has joined ##OpenGL[12:01:15] *** ginoman has joined ##OpenGL[12:13:38] *** marcheu has joined ##opengl[12:17:42] *** gotan666 has quit IRC[12:23:03] *** ginoman has quit IRC[12:24:46] *** freespac1 has joined ##opengl[12:25:18] *** gotan666 has joined ##OpenGL[12:32:07] *** freespace has quit IRC[12:50:16] *** thesquib has joined ##OpenGL[12:50:56] *** Plagman has quit IRC[12:51:04] *** Plagman has joined ##OpenGL[12:53:52] *** PainBank has joined ##OpenGL[12:56:47] *** dvoid has quit IRC[12:57:28] *** dvoid has joined ##OpenGL[12:58:38] *** dvoid has quit IRC[12:58:43] *** elektr1k|afk has quit IRC[12:58:43] *** elektr1k|afk has joined ##opengl[12:59:02] *** dvoid has joined ##OpenGL[13:07:51] *** freespac1 is now known as freespace[13:30:04] *** fargiolas has quit IRC[13:31:39] *** hibread has joined ##opengl[13:32:27] *** selimeki has joined ##OpenGL[13:32:38] <selimeki> hey there[13:32:46] <selimeki> a quick question[13:33:02] <selimeki> in a few minutes i'll be making a presentation of my opengl course project[13:33:31] *** replor has quit IRC[13:33:31] *** selimeki has quit IRC[13:37:39] *** hibread has quit IRC[13:38:15] *** Burga has joined ##OpenGL[13:42:16] *** Skarab has joined ##OpenGL[13:43:58] <Skarab> amsg hi[13:46:10] <belou> yop[13:46:47] *** rsaltini_ has joined ##OpenGL[13:46:51] *** korff_ has joined ##OpenGL[13:47:11] *** rsaltini has quit IRC[13:51:47] *** rnx has joined ##opengl[13:53:56] *** Suprano has quit IRC[14:03:53] *** korff has quit IRC[14:04:15] *** thesquib has quit IRC[14:13:54] *** Rangar has joined ##OpenGL[14:14:00] *** servus_ has joined ##opengl[14:16:18] *** Suprano has joined ##OpenGL[14:28:37] *** servus has quit IRC[14:54:42] *** Grizzly_ has quit IRC[14:58:30] *** predaeu1 has joined ##opengl[15:10:32] *** predaeu1 has left ##opengl[15:14:11] *** andikr has quit IRC[15:39:15] *** predaeus has joined ##opengl[15:42:00] *** Suprano has quit IRC[15:45:01] *** predaeus has left ##opengl[15:51:04] *** michele_m has joined ##OpenGL[15:55:34] *** m4ggus has joined ##opengl[15:58:52] *** dolphin has joined ##OpenGL[16:04:34] *** michele_m has quit IRC[16:04:54] *** nplus has joined ##OpenGL[16:05:04] *** michele_m has joined ##OpenGL[16:05:13] *** dolphin has quit IRC[16:06:25] *** korff_ has quit IRC[16:08:26] *** bbeausej has joined ##OpenGL[16:10:06] *** dolphin has joined ##OpenGL[16:13:16] *** servus has joined ##opengl[16:14:55] *** Ademan has quit IRC[16:15:45] *** sohail has joined ##OpenGL[16:18:36] *** belou_ has joined ##OpenGL[16:20:36] *** belou has quit IRC[16:27:14] *** Suprano has joined ##OpenGL[16:28:49] *** servus_ has quit IRC[16:29:29] *** Skarab has quit IRC[16:31:19] *** rsaltini_ has quit IRC[16:39:01] *** korff has joined ##OpenGL[16:45:41] *** huperniketes has quit IRC[16:46:42] *** HuntsMan has quit IRC[16:48:37] *** Eforen has quit IRC[16:49:40] *** LordMetroid has joined ##OpenGL[16:51:07] *** huperniketes has joined ##OpenGL[16:53:27] *** cit has quit IRC[16:53:34] <WhitAnglAtWork> do anyone know if there is a template for siggraph08 powerpoint presentation?[16:58:57] *** kenws has quit IRC[17:13:28] *** prophile is now known as awayphile[17:20:02] *** korff has quit IRC[17:33:31] *** dolphin has quit IRC[17:40:30] <Ingenu> no clue[17:40:30] *** scy has joined ##opengl[17:41:54] *** dvoid has quit IRC[17:42:33] *** dvoid has joined ##OpenGL[17:42:53] *** atharis has joined ##OpenGL[17:43:56] <atharis> hey, I have a question: Are 2^n+1 size textures natively supported on any hardware?[17:44:36] *** atharis|reconnec has joined ##OpenGL[17:45:06] <atharis|reconnec> hey, I have a question: Are 2^n+1 size textures natively supported on any hardware? (sry if it's a repost)[17:45:33] *** atharis has quit IRC[17:45:45] <Ingenu> non power of two textures work on many hardware now[17:46:09] *** scy has quit IRC[17:46:16] <atharis|reconnec> thanks[17:46:22] *** [AD]Turbo is now known as TurboAWAY[17:49:52] <quicksilver> 2^n+2 works if all the border is uniform even on old hardware :)[17:50:11] *** scy has joined ##opengl[17:50:47] <atharis|reconnec> yes, I knew that one, but I actually need the image data in that extra pixel since I'm working with heightmaps for terrains of 2^n * 2^n patches (therefore 2^n+1 vertices per side)[17:51:38] <atharis|reconnec> I don't really care about old hardware though, I'm using stuff like hardware displacement mapping anyway[17:51:43] <quicksilver> ext_texture_rectangle[17:51:47] <quicksilver> has been supported for years and years[17:52:48] *** ginoman has joined ##OpenGL[17:53:38] <Ingenu> yeah but the texcoords are different[17:53:42] <Ingenu> 0..dim[17:53:47] <Ingenu> instead of 0..1[17:54:08] *** scai has joined ##opengl[17:55:17] *** scai has left ##opengl[17:56:17] <Ragnarok> blah im tired[18:08:19] *** ginoman has left ##OpenGL[18:10:48] *** michele_m has quit IRC[18:11:25] <quicksilver> Ingenu: true but as long as you bear that in mind it works :)[18:19:07] *** Yustme has joined ##opengl[18:20:50] *** groton has quit IRC[18:28:47] *** polywaffle has quit IRC[18:28:51] *** m4ggus has quit IRC[18:32:29] *** pfo has quit IRC[18:35:27] *** atharis|reconnec has quit IRC[18:35:29] <RTFM_FTW> ARB_texture_rectangle is natively supported on both ATI (going back to the original Radeon) and Nvidia (going back to the GeForce3 as I recall)[18:35:52] <RTFM_FTW> which is a fairly limited NPOT texturing extension[18:36:41] <RTFM_FTW> and converting from non-normalized into normalized coords is quite trivial[18:36:52] <RTFM_FTW> although it is an extra step I suppose[18:38:46] *** belou_ has quit IRC[18:39:48] *** WhitAngl has joined ##OpenGL[18:47:18] *** rnx has quit IRC[18:58:01] *** dolphin has joined ##OpenGL[18:58:33] *** WhitAngl2 has quit IRC[19:01:31] *** pfo has joined ##OpenGL[19:05:49] *** Skarab has joined ##OpenGL[19:06:57] *** bbeausej has quit IRC[19:07:27] *** bbeausej has joined ##OpenGL[19:09:34] *** neoneurone has joined ##OpenGL[19:21:02] *** mediogre has joined ##OpenGL[19:27:00] *** TheLorax has joined ##opengl[19:30:20] *** rnx has joined ##opengl[19:41:58] *** mattn2|home has joined ##OpenGL[19:43:06] *** Jupp3 has joined ##OpenGL[19:50:48] *** nplus has quit IRC[19:59:45] *** kaotrix has quit IRC[20:02:27] *** Xmas| has joined ##OpenGL[20:03:46] <Ragnarok> anyone here?[20:04:13] *** hubbe3 has quit IRC[20:04:47] *** sin has joined ##OpenGL[20:04:55] *** hubbe3 has joined ##OpenGL[20:05:31] <sin> hey guys, how can I save the current matrix in a float pointer array ? sth like glSaveMatrix(GLfloat *matrix); or so but this function does not exist, any ideas ?[20:05:40] *** Madsy has joined ##OpenGL[20:07:15] <dindinx> sin: glGetFloatv[20:08:02] <Ragnarok> is it possible to have Vec3 [*/+-] Vec2?[20:08:02] <sin> dindinx, thanks[20:08:14] *** hubbe3 has quit IRC[20:09:11] *** hubbe3 has joined ##OpenGL[20:11:03] <Xmas|> Ragnarok, what do you expect the result to be?[20:11:27] <Ragnarok> inline Vec3 operator*(const Vec2& v) { return Vec3(x * v.x, y * v.y, z); };[20:11:29] <Ragnarok> like that[20:12:15] *** hubbe3 has quit IRC[20:12:23] <Ragnarok> but i guess matrices can only do that[20:12:59] <Xmas|> then why don't you just write vec3.xy?[20:13:15] *** cit has joined ##OpenGL[20:13:18] <Xmas|> or multiply by vec3(vec2, 1.0)?[20:14:08] *** sin has quit IRC[20:14:49] *** blbmp has joined ##OpenGL[20:22:07] *** hubbe3 has joined ##OpenGL[20:25:06] *** PainBank has left ##OpenGL[20:25:14] *** hubbe3 has quit IRC[20:25:54] *** hubbe3 has joined ##OpenGL[20:29:15] *** hubbe3 has quit IRC[20:29:53] *** hubbe3 has joined ##OpenGL[20:33:14] *** hubbe3 has quit IRC[20:34:03] *** gotan666 has quit IRC[20:34:22] *** Jorachim has joined ##OpenGL[20:34:30] *** Jorachim has left ##OpenGL[20:35:19] *** hubbe3 has joined ##OpenGL[20:37:07] *** Obfuscate has quit IRC[20:37:47] *** Obfuscate has joined ##opengl[20:39:14] *** hubbe3 has quit IRC[20:40:32] *** hubbe3 has joined ##OpenGL[20:41:30] *** WhitAngl2 has joined ##OpenGL[20:43:52] *** mediogre has quit IRC[20:44:14] *** hubbe3 has quit IRC[20:49:07] *** hubbe3 has joined ##OpenGL[20:52:14] *** hubbe3 has quit IRC[20:54:11] *** gotan666 has joined ##OpenGL[20:55:27] <gotan666> Can anyone explane me the Kd-Tree traversal as an acceleration for raytracing? :)[20:55:53] <gotan666> I am stucked ... :/[20:56:15] *** WhitAngl has quit IRC[20:57:12] <Skarab> +[20:57:14] *** Skarab has quit IRC[21:00:03] *** mastro has joined ##OpenGL[21:02:02] *** RTFM_FTW has quit IRC[21:02:42] *** |Obfuscate| has joined ##opengl[21:02:49] *** Obfuscate has quit IRC[21:05:06] *** mm^away is now known as mm765[21:06:09] *** |Obfuscate| has quit IRC[21:06:28] *** Obfuscate has joined ##opengl[21:06:43] *** PainBank1 has joined ##OpenGL[21:09:41] *** juanmabc has joined ##opengl[21:17:01] *** PainBank has joined ##OpenGL[21:19:56] *** Xmas| has quit IRC[21:22:33] *** thomash_ has joined ##OpenGL[21:29:13] *** LordMetroid has quit IRC[21:30:16] *** JernejL_ has joined ##OpenGL[21:35:00] *** stringfellow has joined ##opengl[21:35:28] *** exDM69 has quit IRC[21:35:48] *** exDM69 has joined ##opengl[21:37:51] *** Bladezor has quit IRC[21:39:05] *** speedy1 has joined ##OpenGL[21:39:29] *** cit has quit IRC[21:39:34] *** cit has joined ##OpenGL[21:46:31] <gotan666> hm[21:48:22] <gotan666> I need the sourceode of a raytracer with kd-tree acceleration where I can "turn of" the acceleration so show the effection of the kd tree. Does anyone know where I can get this?[21:50:14] *** Jernej has quit IRC[21:52:43] <speedy1> gotan: what do you need it for?[21:52:51] *** PainBank has left ##OpenGL[21:54:13] <gotan666> its for a speech I have to give and its just a small part of it so I dont want to spend that much time but I want to run the raytracer in real time during the speech with and without kd tree acceleration[21:56:19] <speedy1> i got what you want, but have to ask a friend if I can give it, as it is unreleased[21:56:23] <speedy1> as of yet[21:56:44] <speedy1> before that, try the open source ones[21:58:03] <gotan666> ah okay[21:58:38] <gotan666> the main problem is to turn the kd tree of in realtime during the speech without much coding[21:58:46] <gotan666> off[21:59:29] <gotan666> so you can see the acceleration of the raytracer[21:59:44] *** LordMetroid has joined ##OpenGL[22:05:08] *** PainBank1 has joined ##OpenGL[22:05:12] *** PainBank1 has quit IRC[22:08:35] <gotan666> speedy1: but If the code of your friend is able to this and you could ask him it would be much help for me[22:09:39] <speedy1> will do when he shows up[22:10:04] <gotan666> k[22:14:32] *** dolphin has quit IRC[22:18:59] *** Maerz has joined ##OpenGL[22:23:49] *** LiQuiDninja has joined ##OpenGL[22:24:09] *** Ademan has joined ##OpenGL[22:24:44] <gotan666> hm speedy1 I have to go but maybe you can querry me if ur friend will show up. I am also tomorrow online[22:24:54] <gotan666> I would be very pleased :)[22:25:53] <speedy1> sure, might surprise you[22:26:36] <gotan666> :) k like surprises[22:26:40] <gotan666> bb[22:26:56] *** gotan666 is now known as gotan_aw[22:27:21] *** gotan_aw is now known as gotan666[22:28:35] *** bbeausej has quit IRC[22:33:17] *** awayphile has quit IRC[22:34:05] *** Suprano has quit IRC[22:37:08] *** mattn2|home has quit IRC[22:48:06] *** pragma_ has quit IRC[22:59:50] *** korff has joined ##OpenGL[23:00:25] *** Baba has quit IRC[23:00:45] *** cplusplus has joined ##OpenGL[23:02:32] *** LordMetroid has quit IRC[23:05:09] *** TheLorax has quit IRC[23:12:01] *** x0rx0r has joined ##OpenGL[23:12:07] *** hubbe3 has joined ##OpenGL[23:17:15] *** hubbe3 has quit IRC[23:17:22] *** Baba has joined ##OpenGL[23:18:33] *** rnx has quit IRC[23:19:38] *** TheLorax has joined ##opengl[23:24:13] <speedy1> someone correct me if I'm wrong, but to be able to interpolate or clamp vectors in normalized device coordinates, I would have to build a special projection matrix which gives linear Z distribution?[23:25:55] <x0rx0r> speedy1, what exactly do u want to do ?[23:25:57] <MatthiasM> speedy1: that doesn't make sense - the Z value is not modified by the projection[23:26:34] <MatthiasM> atleast not in any perspective way - just assign your z value after multiplying with the model view projection matrix to a varying[23:27:00] <speedy1> i want to clamp the vertex extrusion amount by the screen space movement[23:27:30] <MatthiasM> then do the extrusion in the vertex shader[23:27:53] <speedy1> and I can do it only in NDC as clip space is homogeneous, but NDC has non-linear Z[23:27:53] <MatthiasM> you can estimate the screen size by doing a manual projection of the vertex coordinate[23:28:15] *** hubbe3 has joined ##OpenGL[23:28:23] <speedy1> yeah, that's easy, but I want to scale the extrusion based on screen space movement[23:28:46] <speedy1> what I want is to limit the extrusion to say 10 pixels length[23:29:28] <MatthiasM> if you know the extrusion vector and the z value of the pixel you can limit the extrusion by solving the projection equaltion[23:29:30] <Ragnarok> should I continue learning OpenGL or go with Ogre? Would going with Ogre hinder my chance of getting a gaming job?[23:30:10] <MatthiasM> Ragnarok: depends on your target job[23:30:15] *** TheLorax has quit IRC[23:30:17] <Ragnarok> whatcha mean[23:30:35] <Ragnarok> I wanna go for ID in a couple of years[23:30:53] <MatthiasM> ID?[23:31:10] *** Dew420 has quit IRC[23:31:13] <Ragnarok> http://www.idsoftware.com/[23:31:50] <speedy1> matthias: yeah, that would be the implicit way - might be faster then this linearZ matrix and manual clamping and then returning from NDC to clip space[23:32:05] <Madsy> Their webpage design is still from 1997 :x[23:32:13] <Madsy> I think it could need an update[23:32:13] <Ragnarok> lol[23:32:41] <Madsy> It's true. The webpage has looked like this since they released Quake 2[23:32:54] <Ragnarok> i dun remember[23:32:56] <MatthiasM> Ragnarok: then you should ask them what they need :)[23:32:58] <Madsy> Brown and difficult to read.[23:33:14] *** hubbe3 has quit IRC[23:33:57] <Ragnarok> :P[23:35:23] *** Dew420 has joined ##OpenGL[23:40:30] *** hubbe3 has joined ##OpenGL[23:44:15] *** SilverWolf has quit IRC[23:53:43] *** cit has quit IRC[23:53:46] *** cit has joined ##OpenGL[23:54:15] *** HuntsMan has joined ##opengl