November 22, 2014 
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November 22, 2014 [00:01:29] *** Sharkly has quit IRC[00:02:07] *** tha_grid has quit IRC[00:02:26] *** puerum has joined ##OpenGL[00:04:49] *** manny- has joined ##OpenGL[00:04:49] *** Sharkly has joined ##OpenGL[00:05:03] *** doomlord_1 has joined ##OpenGL[00:06:30] *** qeed has joined ##OpenGL[00:06:33] *** shintah has joined ##OpenGL[00:06:44] *** xissburg has quit IRC[00:07:53] *** staylor has quit IRC[00:14:51] *** Sharkly has quit IRC[00:17:28] *** Syzygy_ has joined ##OpenGL[00:18:28] *** MLM has joined ##OpenGL[00:19:01] *** Match has quit IRC[00:20:05] *** Suchorski has quit IRC[00:21:01] *** [Aura]MaelStrom has quit IRC[00:21:24] *** malko has quit IRC[00:22:54] *** Pyuruku has joined ##OpenGL[00:24:05] *** abs25 has quit IRC[00:24:25] <Pyuruku> Hello, say I have a vertex, geometry and fragment shader. If I declare say `flat out vec3 worldPos` in the vertex shader, will it be passed directly to the fragment shader, bypassing the geometry shader? assuming I have `flat in vec3 worldPos` in the fragment shader, but nothing in the geometry shader[00:24:54] <derhass> Pyuruku: no[00:24:57] <Pyuruku> I'm trying to write a flat shader, and my directional lights work just fine, however a point light just shows all black[00:25:26] <Pyuruku> derhass: okay, is there a way I can just pass the value through the geometry shader without modifying it? sort of like a uniform but not making it a uniform?[00:25:53] <derhass> well, you can just pass it through[00:26:25] <Pyuruku> but that means I need to rename it right?[00:26:38] <Pyuruku> in the geometry sahder[00:27:28] <derhass> yes[00:28:49] <Pyuruku> hmm, trying to do that is giving me " error C7544: OpenGL requires geometry inputs to be arrays"[00:28:57] <derhass> of course[00:29:31] <derhass> the geometry shader sees all vertices of the primitive[00:29:37] <Pyuruku> right[00:30:05] <Pyuruku> maybe I should just calculate this value in the geometry shader... I dont think it needs to be in the vert shader[00:31:04] <Pyuruku> that is the "proper" way to achieve flat shading, right? by using a geometry shader to calculate the normals?[00:32:30] *** justy989 has quit IRC[00:33:28] <bob_twinkles> usually normals are passed in as vertex attributes[00:34:18] <Pyuruku> that doesn't work quite right for flat shading though[00:34:30] <derhass> sure it does[00:34:49] <Pyuruku> ?[00:34:55] <bob_twinkles> define "flat shading?"[00:35:14] <Pyuruku> http://upload.wikimedia.org/wikipedia/commons/4/44/Flat-shading-sample.jpg[00:35:44] <Pyuruku> the normals are messed up if you do not calculate them per primitive[00:35:49] *** Folkol has quit IRC[00:35:50] <Pyuruku> and not per vertex like you suggest[00:35:54] <bob_twinkles> what mode are you drawing with?[00:35:58] <Pyuruku> triangles[00:36:26] <bob_twinkles> take a look at the "flat" keyword in https://www.opengl.org/wiki/Type_Qualifier_%28GLSL%29#Shader_stage_inputs_and_outputs[00:36:34] <Pyuruku> Yes, I was using that before[00:36:39] <bob_twinkles> or more specifically https://www.opengl.org/wiki/Provoking_Vertex#Provoking_vertex[00:36:45] <Pyuruku> the problem is that its calculating the wrong normal in the first place[00:36:56] <bob_twinkles> ?[00:37:00] <bob_twinkles> you should be computing that on the CPU[00:37:06] <bob_twinkles> if it's the wrong normal you have a bug[00:37:27] <Pyuruku> I wanted to try doing it in a geometry shader[00:37:38] *** karab44 has quit IRC[00:37:55] <Pyuruku> and now im trying to pass the world position of the vertex through to the fragment shader :([00:38:12] *** doomlord_1 has quit IRC[00:38:34] *** lenarhoyt has joined ##OpenGL[00:42:41] *** Crehl has quit IRC[00:44:53] *** karswell` has joined ##OpenGL[00:45:26] <bob_twinkles> Pyuruku: check out https://open.gl/geometry (specifically the stuff where they introduce "fcolor" about halfway down the page[00:45:33] *** Chais has joined ##OpenGL[00:47:49] *** karab44 has joined ##OpenGL[00:48:19] *** malko has joined ##OpenGL[00:48:25] *** telex has quit IRC[00:49:49] *** tkeemon has joined ##OpenGL[00:50:41] *** telex has joined ##OpenGL[00:50:52] *** Zupo has quit IRC[00:51:08] *** Zupo has joined ##OpenGL[00:54:23] *** karab44 has quit IRC[00:54:51] *** karab44 has joined ##OpenGL[00:55:24] *** b4b has joined ##OpenGL[00:55:53] *** karswell` is now known as karswell[00:58:13] *** Codex_ has quit IRC[00:58:15] *** Ad1 has quit IRC[00:58:47] *** pazul has quit IRC[01:03:26] *** linuxuz3r has joined ##OpenGL[01:04:04] *** Codex_ has joined ##OpenGL[01:04:33] *** tkeemon has quit IRC[01:06:30] *** _pizthewiz has quit IRC[01:07:07] *** pizthewiz has joined ##OpenGL[01:07:43] *** Jeanne-Kamikaze has quit IRC[01:08:28] *** tcsc has joined ##OpenGL[01:22:25] <Pyuruku> Thank you derhass bob_twinkles http://i.imgur.com/RSnaPfe.png :D[01:22:32] *** hexagoxel_ has joined ##OpenGL[01:22:50] *** Zupoman has quit IRC[01:23:53] *** Codex_ has quit IRC[01:23:58] *** asdtrfygjhknklm has joined ##OpenGL[01:24:06] *** asdtrfygjhknklm has left ##OpenGL[01:24:08] *** asdtrfygjhknklm has joined ##OpenGL[01:24:19] *** asdtrfygjhknklm has left ##OpenGL[01:24:20] *** asdtrfygjhknklm has joined ##OpenGL[01:26:18] *** hexagoxel has quit IRC[01:34:52] *** foreignFunction has quit IRC[01:36:19] *** kestasjk has quit IRC[01:38:26] *** ruuns has quit IRC[01:38:52] *** hahuang65 has quit IRC[01:38:55] *** karab44 has quit IRC[01:39:23] *** OliverUv has quit IRC[01:42:50] *** OliverUv has joined ##OpenGL[01:47:45] *** karab44 has joined ##OpenGL[01:48:08] *** narcan has joined ##OpenGL[01:49:01] *** kestasjk has joined ##OpenGL[01:49:27] <kestasjk> does anyone know how I can get something Im debugging within visual studio 2010 (C++) to run on the GPU?[01:49:51] <kestasjk> Ive added the folder to the list of apps that should run via the GPU, and when I run it outside of visual studio it does run on the GPU, but the damn thing wont run on the GPU[01:50:09] <kestasjk> which means I get opengl errors when a tesselation shader compiles[01:52:49] <HuntsMan> add the debugger to that list[01:52:58] <HuntsMan> assuming you mean something like Optimus[01:53:40] <kestasjk> yup I do, but devenv.exe is in the list but I cant choose to change it[01:53:47] <kestasjk> the combo box is grayed out[01:54:09] *** RockLee has joined ##OpenGL[01:56:38] <kestasjk> " the discrete NVIDIA GPU is triggered by DX, DXVA and CUDA calls, but no OpenGL calls"[01:57:01] *** karab44 has quit IRC[01:57:11] *** shintah has quit IRC[01:57:17] <HuntsMan> FAIL[01:59:12] *** karswell has quit IRC[01:59:50] *** karswell has joined ##OpenGL[02:01:42] *** doomlord_1 has joined ##OpenGL[02:03:49] <bob_twinkles> kestasjk: IIRC there's something in the power settings control thingy that lets you force everything to run on the discrete card[02:06:39] *** Lemml_ has quit IRC[02:07:06] *** hexagoxel_ has quit IRC[02:09:40] *** garFF has joined ##OpenGL[02:17:45] *** ripper93 has joined ##OpenGL[02:23:10] *** MLM has quit IRC[02:23:44] *** luxigo has quit IRC[02:29:54] *** ripper93 has quit IRC[02:33:00] *** bkre_ has quit IRC[02:37:57] <RockLee> does anyone have some sample code of a 3d ball bouncing?[02:38:13] <Polarina> kestasjk, you can force to use the discrete card by exporting NvOptimusEnablement with the integer value of 1.[02:38:14] *** karab44 has joined ##OpenGL[02:39:23] <Polarina> kestasjk, extern "C" { extern const int NvOptimusEnablement = 1; }[02:39:45] <kestasjk> well well that's convenient if true :o[02:40:42] *** linuxuz3r has quit IRC[02:40:56] <kestasjk> but it doesnt seem to be :([02:41:09] *** linuxuz3r has joined ##OpenGL[02:41:33] <Polarina> Check if the symbol name is being mangled by the compiler.[02:41:45] <slime> kestasjk: http://developer.download.nvidia.com/devzone/devcenter/gamegraphics/files/OptimusRenderingPolicies.pdf[02:41:53] *** Misu has quit IRC[02:42:02] *** karab44 has quit IRC[02:42:04] <slime> maybe needs a _declspec(dllexport)[02:42:39] *** Misu has joined ##OpenGL[02:43:11] *** Codex_ has joined ##OpenGL[02:43:13] <kestasjk> bingo: extern "C" { _declspec(dllexport) extern const int NvOptimusEnablement = 1; }[02:43:16] <kestasjk> very nice[02:59:18] *** doomedbunnies has quit IRC[02:59:19] *** linuxuz3r has quit IRC[02:59:22] *** narcan has quit IRC[02:59:24] *** telex has quit IRC[02:59:26] *** qeed has quit IRC[02:59:28] *** Gamecubic has quit IRC[02:59:34] *** SugarCube has quit IRC[02:59:40] *** antognolli has quit IRC[02:59:48] *** AdelGitGud has quit IRC[02:59:52] *** d_aniel has quit IRC[02:59:55] *** moser has quit IRC[02:59:56] *** huntercool has quit IRC[03:00:09] *** giucam has quit IRC[03:00:11] *** HaltingState has quit IRC[03:00:12] *** bb010g has quit IRC[03:00:18] *** tapout has quit IRC[03:00:18] *** OliverUv has quit IRC[03:00:19] *** malko has quit IRC[03:00:19] *** roboman2444 has quit IRC[03:00:19] *** Demon_Fox has quit IRC[03:00:21] *** Ad1_RN has quit IRC[03:00:23] *** bjz has quit IRC[03:00:23] *** plash 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has quit IRC[07:23:47] *** drasich has joined ##OpenGL[07:24:17] *** slidercrank has quit IRC[07:25:51] *** telex has quit IRC[07:26:38] *** telex has joined ##OpenGL[07:26:40] *** lenarhoyt has quit IRC[07:26:45] *** tcsc has quit IRC[07:36:06] *** zzuegg has quit IRC[07:38:46] *** seangrove has joined ##OpenGL[07:38:52] *** DapperPixpy has quit IRC[07:39:20] *** wiky has joined ##OpenGL[07:43:58] *** luxigo has joined ##OpenGL[07:54:19] *** edwardjohn has quit IRC[08:03:12] *** roboman2444 has quit IRC[08:22:42] *** lenarhoyt has joined ##OpenGL[08:23:17] *** DMJC-M has joined ##OpenGL[08:23:22] *** samrat has joined ##OpenGL[08:23:54] <DMJC-M> chrisf: can you help me with the code you reworked the other week?[08:24:15] <DMJC-M> I've implemented it, got it drawing the grid as a vertex buffer object[08:24:44] <DMJC-M> But for some reason my scene has to refresh multiple times before the object appears. It's a bit weird that it doesn't just draw the whole thing on the first pass.[08:25:14] <DMJC-M> all the looping etc occurs before the buffer binding. 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joined ##OpenGL[11:12:36] *** Keniyal has joined ##OpenGL[11:14:52] *** wiky has quit IRC[11:16:32] *** Zerflag has quit IRC[11:17:09] *** Zerflag has joined ##OpenGL[11:19:58] *** Zerflag_ has joined ##OpenGL[11:21:38] *** Zerflag has quit IRC[11:24:42] *** Zerflag_ has quit IRC[11:24:59] *** lenarhoyt has joined ##OpenGL[11:30:20] *** Ad1 has quit IRC[11:30:30] *** lenarhoyt has quit IRC[11:34:23] *** Ad1 has joined ##OpenGL[11:34:53] *** drasich has quit IRC[11:38:04] *** goliath has joined ##OpenGL[11:51:49] *** krnlyng has joined ##OpenGL[11:51:50] <krnlyng> probably a stupid question. if i use glUniformMatrix4fv(loc, mat); does mat have to stay in scope or can it be destroyed immediately after the call?[11:52:29] <doomlord_1> i'm pretty certain its copied in[11:52:30] <doomlord_1> you can destroy what you passed[11:52:31] <doomlord_1> its a valid question about pointer ownership etc[11:52:31] *** samrat has quit IRC[11:53:54] <Bloodust> you can destroy it right after the call[11:55:23] <Bloodust> same with all gl resources[11:55:24] *** nmschulte has quit IRC[11:56:57] *** nmschulte has joined ##OpenGL[11:57:13] *** JoshSyn has joined ##OpenGL[12:00:35] <kestasjk> I am more happy with my basic quad tesselation than I should be http://tinypic.com/r/2hewx2w/8[12:01:14] <kestasjk> must be what a pain it was to figure out, this thing totally let me up the wrong path: http://prideout.net/blog/?p=49[12:05:36] *** DMJC-M has joined ##OpenGL[12:12:37] *** doomedbunnies has quit IRC[12:12:38] *** abs25 has quit IRC[12:12:40] *** slidercrank has quit IRC[12:12:42] *** ivan\ has quit IRC[12:12:43] *** shingshang has quit IRC[12:12:44] *** OliverUv has quit IRC[12:12:45] *** malko has quit IRC[12:12:46] *** Ad1_RN has quit IRC[12:12:47] *** bjz has quit IRC[12:12:48] *** plash has quit IRC[12:12:55] *** M-ou-se has quit IRC[12:12:55] *** Ephemeral has quit IRC[12:12:59] *** slime has quit IRC[12:13:01] *** lahwran has quit IRC[12:13:05] *** Barrett__ has quit 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has joined ##OpenGL[13:25:10] <TGYoshi> Hey all, am I right in thinking that if my application uses under like 32 textures in total, I can just glActiveTexture(n) to switch and binding a texture only once, leaving that bound?[13:25:17] <TGYoshi> (between frames)[13:25:22] *** erhan_ has joined ##OpenGL[13:26:18] *** Beetny has quit IRC[13:28:23] *** soulz has quit IRC[13:29:59] *** hexagoxel has joined ##OpenGL[13:30:45] *** ripper93 has joined ##OpenGL[13:32:19] <Bloodust> or just shove them all in one texture array[13:32:58] *** kuldeepdhaka has quit IRC[13:33:02] *** navitsu has quit IRC[13:34:11] <TGYoshi> Well, they're in fact changing sometimes :P[13:37:16] *** foreignFunction has joined ##OpenGL[13:37:49] *** DMJC-M has joined ##OpenGL[13:39:57] *** kuldeepdhaka has joined ##OpenGL[13:41:49] *** DMJC-M has quit IRC[13:42:40] *** centrinia has quit IRC[13:46:08] *** garFF has joined ##OpenGL[13:47:33] *** erhan_ has quit IRC[13:50:50] *** Crehl has joined ##OpenGL[13:51:23] *** ripper93 has quit IRC[13:51:30] *** Polarina has quit IRC[13:53:46] *** Ad1 has quit IRC[14:00:32] *** Zerflag has joined ##OpenGL[14:01:23] <Yaniel> still works[14:01:42] <Yaniel> there is glTexSubImage and friends[14:04:32] *** BreadProduct has quit IRC[14:05:17] *** Polarina has joined ##OpenGL[14:05:25] *** Zerflag has quit IRC[14:10:14] *** samrat has joined ##OpenGL[14:10:31] *** urraka has joined ##OpenGL[14:19:30] *** moser has quit IRC[14:20:05] *** samrat has quit IRC[14:21:48] *** SugarCube has quit IRC[14:22:33] *** ozette has joined ##OpenGL[14:27:47] *** goliath has joined ##OpenGL[14:27:56] *** Waynes has joined ##OpenGL[14:29:47] *** SugarCube has joined ##OpenGL[14:34:23] *** clauswitt has joined ##OpenGL[14:35:03] *** paperManu_ has joined ##OpenGL[14:36:03] *** moser has joined ##OpenGL[14:36:57] *** Ad1 has joined ##OpenGL[14:39:54] *** clauswitt has quit IRC[14:41:20] *** samrat has joined ##OpenGL[14:42:21] *** Burga has quit IRC[14:43:39] *** Ad1 has quit IRC[14:47:08] *** Ad1 has joined ##OpenGL[14:51:59] *** paul424 has joined ##OpenGL[14:52:47] <paul424> What would be the E=mc^2 for 3d graphics ?[14:52:49] <paul424> sorry 3d geometry ?[14:53:03] <Hunts> the what?[14:53:15] <Hunts> I don't think Einstein did computer graphics :)[14:54:23] <paul424> the one which would joint as many equations as possible[14:55:00] *** ManDay has joined ##OpenGL[15:05:05] *** razieliyo has joined ##OpenGL[15:08:38] *** samrat has quit IRC[15:09:03] <Hunts> paul424: that question makes no sense[15:11:05] *** samrat has joined ##OpenGL[15:11:52] *** AdelGitGud has quit IRC[15:11:53] <paul424> it makes, but you are too poor in 3d algebra :P[15:13:38] *** zagabar is now known as zagobar[15:16:06] <Codex_> paul424: obviously the isosurface/level set generation is a good candidate using f(x,y,z)=c equation.[15:17:12] <paul424> Sorry , I wans't precise enough , I wanted someting from the domain of linear algebra[15:17:38] *** paperManu_ has quit IRC[15:18:42] <derhass> the question doesn't make sense[15:19:11] <Hunts> now it makes even less sense[15:20:47] *** bkre_ has joined ##OpenGL[15:25:43] <paul424> As pointed out above, the absolute value of the determinant of real vectors is equal to the volume of the parallelepiped spanned by those vectors.[15:25:57] <paul424> I don't understand the further explanation on the wikipedia though ;([15:26:35] <paul424> As a consequence, if f: Rn → Rn is the linear map represented by the matrix A, and S is any measurable subset of Rn, then the volume of f(S) is given by |det(A)| times the volume of S. More generally, if the linear map f: Rn → Rm is represented by the m × n matrix A, then the n-dimensional volume of f(S) is given by:[15:27:15] *** razieliyo has quit IRC[15:27:24] *** razieliyo has joined ##OpenGL[15:31:48] *** groton has quit IRC[15:34:14] *** duga has joined ##OpenGL[15:34:23] <japro> paul424, the spectral theorem?[15:35:47] *** konom has joined ##OpenGL[15:36:45] *** ozette has quit IRC[15:38:47] <duga> hi, I have problem with FBO multisampling http://pastebin.com/LB7xhaJX (code), http://pastebin.com/AwzP6Q64 (result). In my opionon I have the same samples count for renderbuffers and textures and I have no idea why I keep getting error GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE[15:43:08] *** snakenerd has joined ##OpenGL[15:47:12] *** tha_grid has joined ##OpenGL[15:48:07] *** ManDay has quit IRC[15:49:17] *** Zerflag has joined ##OpenGL[15:53:54] *** Zerflag has quit IRC[15:54:52] *** Khlorghaal has joined ##OpenGL[15:56:10] <tha_grid> hello all, i have a bitmap with alpha channels in it, how can i tell it the correct parameters to glTexImage2D[15:56:16] *** samrat has quit IRC[15:56:50] *** jdolan has joined ##OpenGL[15:56:58] <Bloodust> paste the glTexImage2D call here and ill tell you if its right[15:57:43] *** samrat has joined ##OpenGL[15:57:57] *** garFF has quit IRC[15:58:38] <tha_grid> i see how the call works, how can i be sure the last parameter(data) is right[15:59:06] *** snakenerd has quit IRC[15:59:35] <tha_grid> what about details like endianess and bit depth[15:59:56] <tha_grid> glTexImage2D GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, image[16:00:17] <Bloodust> you dont have to worry about endianess[16:00:21] <Bloodust> AFAIK[16:00:34] <tha_grid> im worried about the last parameter[16:00:39] <derhass> GL_UNSIGNED_BYTE is well-defined[16:00:53] <derhass> there is no endianness, and the bit width is clear[16:00:58] <Bloodust> last parameter is pointer to the data, whats your worry?[16:02:10] <tha_grid> im going to be loading a bitmap straight from disk into the array image[16:02:32] <tha_grid> skipping the header of course, is there any gl code for this?[16:02:59] <derhass> gl code? no. gl doesn't care[16:03:14] <tha_grid> is there any way you suggest derhass?[16:03:27] <tha_grid> to load the bitmap[16:03:45] <tha_grid> i know you can use FILE * fp = fopen[16:04:11] <Bloodust> I use freeimage gli[16:04:17] <derhass> well. either use some image loader library[16:04:17] <Bloodust> freeimage AND gli[16:04:20] <derhass> or do it manually[16:04:53] <derhass> note that even BMP has different encodings and features[16:05:04] <Bloodust> http://gli.g-truc.net/0.5.1/index.html[16:06:14] <tha_grid> sure i'll probably just load them[16:06:38] <tha_grid> does it have dependencies?[16:06:43] <Khlorghaal> tha_grid: you want RGBA8 for internalformat[16:07:06] <tha_grid> thanks Khlorghall, how can i determine this myself?[16:07:20] <derhass> Khlorghaal: why?[16:07:24] <Khlorghaal> 4 channels, 8 bytes each[16:07:30] <Khlorghaal> RGBA is not an internalformat[16:07:40] <derhass> of course it is[16:07:44] <Khlorghaal> its a dataformat[16:08:02] <japro> derhass, but that's so retro :D[16:08:37] <derhass> Khlorghaal: the spec disagrees[16:08:40] <tha_grid> does anyone know how big the header will be?[16:08:45] <Khlorghaal> wuot[16:08:49] <derhass> Khlorghaal: and when in doubt, I believe the spec more than you[16:09:00] <Khlorghaal> huh they must be synonymous because i use RGBA8 in my code[16:09:11] <derhass> they are not synonymous[16:09:25] <derhass> GL_RGBA8 is a sized internal format, GL_RGBA is not[16:09:38] *** samrat has quit IRC[16:10:09] <Khlorghaal> oh so unsized means it allocates the size arbitrarily? didnt know you could do that[16:10:14] <derhass> with GL_RGBA, the implmentation is free to chose the format it sees best. which usually is GL_RGBA8, of course[16:11:13] <Bloodust> also, you probably dont want RGBA8[16:11:28] <Bloodust> compressed formats are wayy faster[16:12:02] <Khlorghaal> I have 3 FBOs with RGB16F :v[16:12:17] *** mtj has quit IRC[16:12:23] <tha_grid> https://www.khronos.org/opengles/sdk/docs/man/xhtml/glTexImage2D.xml << there is not an RGBA8 availiable for both formats[16:12:29] *** mtj has joined ##OpenGL[16:12:49] <Khlorghaal> that page is deprecated[16:12:57] <Bloodust> https://www.opengl.org/sdk/docs/man/html/glTexImage2D.xhtml[16:12:59] <Khlorghaal> luminance is no longer a thing[16:13:36] *** samrat has joined ##OpenGL[16:15:44] <Khlorghaal> tha_grid: also if youre not using a lib for loading then use targa, after the header it stores data directly how the GPU reads it.[16:15:59] <Khlorghaal> or GL reads it rather[16:16:41] <tha_grid> targa, so I will ned simply GL_RGBA for both formats?[16:17:17] *** aaa801__ is now known as aaa801[16:17:35] <Khlorghaal> i believe[16:17:50] <Khlorghaal> though id advise using png[16:18:09] <Khlorghaal> once you get into proper storage youll want to use more specialized formats though[16:19:22] *** groton has joined ##OpenGL[16:19:27] *** jbud has joined ##OpenGL[16:20:09] <Bloodust> png.. seriously[16:20:35] <japro> Bloodust, you don't use gif for textures?[16:21:13] <Khlorghaal> i like png because its lossless D:[16:21:23] <Bloodust> lossless is slow[16:21:37] <Khlorghaal> though i work with really small images[16:22:07] *** b4b has joined ##OpenGL[16:22:12] <Bloodust> and you cant store mipmaps on pngs[16:22:14] <Bloodust> I think[16:22:27] <Khlorghaal> pft i gen mips during runtime lol[16:23:34] <Bloodust> super slow[16:23:34] * Khlorghaal suddenly feels like he shouldnt be advising people :d[16:24:10] <Bloodust> I had all my textures as .tga's at one point but I converted all of them to compressed mipmapped dds format[16:24:12] *** tcsc has joined ##OpenGL[16:24:21] <Bloodust> cut my texture and game loading time by good 80-95%[16:24:25] *** Grimshaw has joined ##OpenGL[16:24:32] <Khlorghaal> what resolution approx?[16:25:13] <Khlorghaal> and isnt dds patented?[16:26:14] <Bloodust> between 512^2 and 4k resolutions[16:26:28] *** paul424 has quit IRC[16:26:43] <Bloodust> yeah dxt has copyright issues[16:26:49] <Bloodust> but you can use ETC[16:26:53] <Bloodust> its supported by opengl now[16:27:35] <Yaniel> Bloodust: technically you can I think[16:27:44] <Yaniel> but nothing really supports that[16:28:07] <Bloodust> really?[16:28:28] *** samrat has quit IRC[16:28:38] <Yaniel> it's called MNG[16:29:04] <Yaniel> basically png with animations but I suppose one could abuse that for mipmaps too[16:29:51] <Yaniel> or APNG[16:29:57] *** zajfy has quit IRC[16:30:05] *** b4b has quit IRC[16:30:32] <Yaniel> and if you don't mind breaking the spec a bit you could have multiple IHDR+IDAT+IEND chunk sets in the same file anyway[16:30:43] *** ripper93 has joined ##OpenGL[16:30:50] *** samrat has joined ##OpenGL[16:31:06] *** mizux has joined ##OpenGL[16:31:22] *** zajfy has joined ##OpenGL[16:31:23] *** b4b has joined ##OpenGL[16:36:25] *** ripper93 has quit IRC[16:37:06] *** ripper93 has joined ##OpenGL[16:38:53] <ripper93> Hey guys, I'm just starting to use opengl 3+ (coming from the opengl 2.1) and I'm having a very hard time in just drawing a triangle.[16:39:42] <Yaniel> no surprises there[16:39:55] <Yaniel> have you used VBOs before?[16:40:13] <TGYoshi> Yaniel: (in reply to hours ago) glTexSubImage indeed seems like a wonderful thing, gonna use that, thanks![16:40:31] <kestasjk> crazy: http://haxiomic.github.io/GPU-Fluid-Experiments/html5/?q=Low[16:40:33] <ripper93> Yaniel: no, I haven't.[16:40:38] <kestasjk> http://madebyevan.com/webgl-water/[16:40:54] <ripper93> I just did everything with glBegin and glEnd[16:41:22] <Yaniel> kestasjk: whoa[16:41:41] <kestasjk> Yaniel: yeah, that just shouldnt be in a web browser, its unnatural[16:41:42] <ripper93> using buffers is like a totally different paradigm.[16:41:50] <Yaniel> ripper93: then I recommend reading a modern gl tutorial like the stuff mentioned in the channel topic[16:42:05] <Yaniel> open.gl and opengl-tutorial.org are decent too[16:42:15] <TGYoshi> open.gl is what I recommend[16:42:52] <Bloodust> I prefer opengl-tutorial.org[16:43:15] <Bloodust> theres also http://ogldev.atspace.co.uk/[16:43:46] *** asido has joined ##OpenGL[16:45:06] <ripper93> Thank you guys for these links[16:45:09] <ripper93> I'll take a look.[16:49:21] *** erhan_ has joined ##OpenGL[16:50:05] *** Suchorski has joined ##OpenGL[16:50:11] *** Zerflag has joined ##OpenGL[16:50:52] *** ripper93 has quit IRC[16:54:12] *** jdolan has quit IRC[16:54:36] *** drag0nius has joined ##OpenGL[16:54:52] *** Zerflag has quit IRC[16:58:25] *** Nosezeichen has joined ##OpenGL[16:58:36] <Nosezeichen> hi[16:59:28] <Nosezeichen> anyone can help me with an strange exception I get when calling: glutCreateWindow ("Window"); ?[17:00:10] <Hunts> what strange exception?[17:00:55] <Nosezeichen> I do something in an endless loop and calling glutCreateWindow ("Window"); is one of it. works for some time, but than after 30 reinits of glut i get an unhandled exception during user callback exception[17:01:05] <Nosezeichen> http://stackoverflow.com/questions/27076836/opengl-freeglut-uhandled-exception-during-usercallback[17:01:18] *** navitsu has joined ##OpenGL[17:01:18] <Nosezeichen> i wrote it down on stackoverflow[17:02:06] *** navitsu has quit IRC[17:02:18] <Nosezeichen> dont know how to narrow the thing down to what is causing it[17:02:47] *** navitsu has joined ##OpenGL[17:03:47] *** BitPuffin has quit IRC[17:05:15] <Bloodust> why would you recreate glut window in a loop?[17:05:26] <Yaniel> I was wondering about the same[17:05:43] *** BitPuffin has joined ##OpenGL[17:06:07] <Nosezeichen> yes I know i won't have to do it. but in fact I'm using that DLL in my java application via JNA[17:06:37] <Nosezeichen> and strange things happened when I didn't reloaded the DLL[17:06:42] <Yaniel> JNA?[17:06:50] <Nosezeichen> Java Native Acces[17:06:58] <Bloodust> huehue java[17:07:19] <Yaniel> hrm.. just use LWJGL?[17:07:47] <Nosezeichen> its for calling native methods from java-side[17:08:03] <Nosezeichen> hm let me simplify it to this[17:08:17] <Yaniel> yeah, I meant use LWJGL so you don't need the DLL at all[17:08:35] <Yaniel> on another note, lldb takes ages to build[17:09:37] <derhass> Nosezeichen: your code seems to be multithreaded (as runLib is an endless loop, you'll need another thread for requestTermination), but there is no synchronization regarding the termination at all[17:09:38] <Nosezeichen> on java side I'm using the jMonkneyEngine (GameEngine) and I'm using a native Kinect application which creates a user window[17:10:28] <Nosezeichen> the native side renders the user viewer to a buffer[17:10:50] <Nosezeichen> whose content i display on java side[17:12:11] <Nosezeichen> i thought about synchronisation problems too, but for now Im just using something like: while(condition) sleep(100);[17:12:53] *** jdolan has joined ##OpenGL[17:14:42] <Nosezeichen> I'm looking right now if I have overseen something which could cause synch problems[17:17:47] <Nosezeichen> i might have found one line which could have caused this[17:18:20] *** garFF has joined ##OpenGL[17:20:59] *** wreed has joined ##OpenGL[17:24:27] *** garFF has quit IRC[17:30:52] *** jdolan has quit IRC[17:33:54] *** pink-rg has joined ##OpenGL[17:34:02] *** b4b has quit IRC[17:34:49] *** Alina-malina has quit IRC[17:35:48] *** Alina-malina has joined ##OpenGL[17:37:54] <abs25> GL SE[17:37:56] <abs25> gl_Position = u_projTrans * vec4(a_position + u_distort,1.);[17:38:00] <abs25> Shader: ERROR: 0:19: 'constructor' : too many arguments[17:38:02] <abs25> why?[17:38:54] <Hunts> what's a_position and u_distort?[17:39:21] <abs25> u_distort vec3, a_position vec4[17:39:42] <Hunts> so what happens when you sum a vec3 and a vec4?[17:40:10] <tha_grid> do you got a minute[17:40:14] <tha_grid> ill try[17:40:16] *** Waynes has quit IRC[17:41:05] *** Waynes has joined ##OpenGL[17:41:41] *** mtj has quit IRC[17:41:42] *** luxigo has joined ##OpenGL[17:42:04] *** lenarhoyt has quit IRC[17:42:23] *** Alina-malina has quit IRC[17:43:06] *** mtj has joined ##OpenGL[17:43:34] <abs25> hunts tnx[17:44:54] <pink-rg> i'm porting some opengl code from windows to mac[17:45:03] <pink-rg> and on windows i'm including gl.h/glext.h[17:45:17] <pink-rg> on mac should i inculde these files or us gl3.h/gl3ext.h?[17:45:47] *** Alina-malina has joined ##OpenGL[17:48:38] *** drag0nius_ has joined ##OpenGL[17:50:09] *** Grimshaw has quit IRC[17:51:24] <tha_grid> you will get an error with vec3 + vec4 just for the record[17:51:36] *** drag0nius has quit IRC[17:54:14] *** Twinklebear has joined ##OpenGL[17:55:27] *** hdon has joined ##OpenGL[17:55:56] *** Orion] has joined ##OpenGL[17:58:35] *** erhan_ has quit IRC[17:59:34] *** erhan_ has joined ##OpenGL[17:59:51] *** lenarhoyt has joined ##OpenGL[18:04:23] *** Alina-malina has quit IRC[18:04:51] *** Alina-malina has joined ##OpenGL[18:04:55] *** Alina-malina has quit IRC[18:04:55] *** Alina-malina has joined ##OpenGL[18:05:48] *** Zerflag has joined ##OpenGL[18:08:10] *** groton has quit IRC[18:11:10] *** Zerflag has quit IRC[18:12:10] *** telex has quit IRC[18:13:29] *** RockLee has joined ##OpenGL[18:14:40] *** telex has joined ##OpenGL[18:16:56] *** erhan_ has quit IRC[18:17:36] *** ninzine has quit IRC[18:18:14] *** karswell` has quit IRC[18:21:54] <Nosezeichen> @derhass thank you, I think I found the synchronization problem[18:24:23] *** Gamecubic has joined ##OpenGL[18:24:27] <RockLee> Hey guys, I'm running into a bit of a problem. I'm following this guy's tutorial series on OpenGL, but I'm swamped with compile errors. He links to the pastebin code in the video description http://youtu.be/jEm_Vq6Ply8?list=PL0AB023E769342AFE and here's my logs http://pastebin.com/ZB8tWUb0[18:25:48] <tha_grid> im reading someone else's c code and thats always full of errors[18:25:53] <tha_grid> start simple[18:26:19] <Bloodust> main.cpp|| undefined reference to `objloader::load(char const*)'|[18:26:26] <Bloodust> you forgot to link something[18:26:29] <tha_grid> start with a new c file and have it contain int main () {}[18:26:34] <Bloodust> that something contains the objectloader class[18:26:42] <Bloodust> tha_grid thats c++ not C[18:27:09] <Bloodust> RockLee also, that tutorial sucks[18:27:18] <Bloodust> its using the old removed functionality[18:27:42] <Bloodust> I suggest you forget that tutorial and choose a new one from one of these links http://www.opengl-tutorial.org/ http://www.arcsynthesis.org/gltut/ http://ogldev.atspace.co.uk/ http://open.gl/[18:28:12] <tha_grid> i am working with rpi and they gave a complete environment, all you had to do was make[18:28:27] <RockLee> @bloodlust lol. I stumbled across it while trying to find out how to do things for my project. At this point, I'm almost willing to pay someone to end my openGL headache....[18:28:30] <tha_grid> it is AWESOME[18:28:37] <RockLee> Cool lemme check those out @bloodlust[18:29:14] <tha_grid> i was gonna coach the guy[18:29:29] <tha_grid> line by line[18:29:38] <tha_grid> but yeah those were undef references[18:31:06] *** kuldeepdhaka has quit IRC[18:31:12] *** Binero has joined ##OpenGL[18:31:27] <Binero> Is there a way to make wgl return all opengl functions, even the <1.3 ones?[18:31:38] <Binero> It makes it a pain to develop cross platform otherwise[18:33:54] *** kuldeepdhaka has joined ##OpenGL[18:47:35] <derhass> Binero: no[18:48:09] <derhass> although I don't get your point[18:48:30] <Binero> well[18:48:46] <Binero> I essentially need to create 2 completely different libraries to load OpenGL functions[18:48:52] <Binero> just because wgl doesn't allow for that[18:49:06] <derhass> depends on what you are doing[18:49:17] <derhass> there are some hacks, also[18:50:58] <derhass> the "1.3" is also not correct. everything above 1.1 is extension on windows[18:51:05] *** MLM has joined ##OpenGL[18:51:20] *** Biliogadafr has joined ##OpenGL[18:51:44] *** ninzine has joined ##OpenGL[18:56:56] <Binero> Some hacks?[18:57:04] *** Syzygy__ has joined ##OpenGL[18:57:06] *** hahuang65 has joined ##OpenGL[18:57:32] <Binero> I feel like I first have to parse 1.1, then parse 3.3, get what they have in common and then write 2 different loaders for 1 OpenGL version to just support Windows[18:58:02] *** Syzygy_ has quit IRC[18:58:33] <Bloodust> hoho[18:58:37] <Polarina> Binero, targetting 1.1 is going to be your ultimate nightmare.[18:59:54] <Binero> Why's that?[19:00:26] *** Portals has joined ##OpenGL[19:00:38] <Polarina> Binero, its lack of features and capabilities, primarily. It leaves you with little to work with.[19:00:55] <Binero> Oh like that, but I don't want to target 1.1[19:02:11] <Polarina> Then might I ask what you want to do with 1.1?[19:03:09] <Portals> If you guys feel like screaming how bad I'm at OpenGL (I'm not that bad though :)), I'm streaming right now twitch.tv/portalprogramming[19:04:25] <Bloodust> glTexCoordPointer[19:04:27] <Bloodust> kidius[19:04:57] <Portals> I wanted to create a quick test. Was a long time ago since I used GL11[19:06:08] <Portals> :D[19:06:27] <Bloodust> btw, your mic is really low I cant hardly hear you[19:06:27] *** Misu has quit IRC[19:07:00] *** Misu has joined ##OpenGL[19:07:05] <Bloodust> a bit[19:07:25] *** abs25 has quit IRC[19:07:27] <Portals> https://github.com/angergard/blueberryrenderingengine[19:07:34] *** cr`nge has joined ##OpenGL[19:07:45] <Bloodust> its good[19:08:15] <Bloodust> and my ff crashed[19:08:36] <Bloodust> ill get back to playing borderlands[19:08:59] <Binero> polarina: I need 1.1 to see what functions I have to load from a DLL and which I need to load using wgl[19:09:51] *** goliath has quit IRC[19:10:03] <Polarina> Binero, why not use a library that does that for you? https://github.com/Dav1dde/glad[19:10:53] *** mukunda_ has quit IRC[19:10:59] <derhass> Binero: or you just ignore that and try to load from opengl32.dll whenever wglGetProcAddress() fails[19:11:07] <Binero> polarina: I was doing this, but I figured lots of errors could be solved by creating bindings which load opengl on a per-context basis[19:11:28] <Binero> derhass: seems like the best option sadly[19:11:35] <Binero> hadn't thought of that yet[19:11:47] *** kmnt has joined ##OpenGL[19:11:57] *** mukunda_ has joined ##OpenGL[19:18:12] *** shingshang has quit IRC[19:18:40] <dav1d> Binero: would love input from you about glad, if you run into trouble/things which should work differently (or don't work at all :o)[19:19:32] <dav1d> you can also use glad as library, subclass a loader and go from there[19:19:44] <Portals> Bloodust, what's wrong with my glTexCoordPointer?[19:19:55] *** luxigo has quit IRC[19:20:56] <Bloodust> removed from core[19:21:03] <Bloodust> like VertexPointer etc.[19:21:13] <Bloodust> replaced by glVertexAttribPointer[19:22:07] <Binero> davld I don't think that library fixes the issue of separating bindings from contexts though[19:22:35] <Portals> I know it's removed from the core. But glVertexAttribPointer only works with shaders[19:23:07] <Portals> Bloodust[19:23:11] <Bloodust> yep[19:23:15] <derhass> well, that is kind of the point: the fixed-function pipeline is deprecated/removed[19:23:27] <Bloodust> and not using shaders is also removed from core[19:23:37] <Portals> My test just got a lot bigger :P[19:24:01] <Bloodust> and VertexPointer etc. does work with older shaders[19:24:22] <Bloodust> I think[19:24:49] <Portals> Pre 2.0?[19:24:52] <derhass> glVertexPointer is a special case anyway. as this can _always_ be replaced by glVertexAttribPointer, even if one does not use shaders[19:25:09] <Bloodust> there were no shaders pre 2.0 :D[19:25:26] <derhass> there were the ARB extensions[19:25:51] <derhass> and before that, the framgent and vertex program extensions[19:26:03] <Portals> I got confused when you used the term "older shaders"[19:26:09] *** doev has quit IRC[19:26:15] <Portals> :)[19:26:28] <Portals> Bloodust, are you watching my stream[19:26:31] *** Ad1_RnR has joined ##OpenGL[19:27:09] <Bloodust> nope, im playing borderlands[19:27:32] <derhass> haha![19:28:01] *** wreed has quit IRC[19:28:06] <Portals> Oh, just wanted to see if typing here was unnecessary :P[19:30:18] <Bloodust> I do die too much[19:30:21] *** Ad1_RN has quit IRC[19:30:25] <Portals> What level?[19:31:10] <Bloodust> well I started a new char, its at lvl 16[19:31:23] *** b4b has joined ##OpenGL[19:38:12] *** cr`nge has quit IRC[19:42:26] <Bloodust> one does not simply speedrun borderlands game with all the god dang dialog[19:43:50] *** zajfy has quit IRC[19:46:00] *** samrat has quit IRC[19:49:10] *** RockLee has quit IRC[19:49:57] <Portals> True Bloodust![19:50:15] <Portals> I shall be back soon, gonna watch me some Thor, The dark world[19:50:18] <Portals> See ya![19:53:33] *** Zerflag has joined ##OpenGL[19:54:11] *** cr`nge has joined ##OpenGL[19:55:57] *** abs25 has joined ##OpenGL[19:56:44] *** edwardjohn has joined ##OpenGL[19:57:01] *** Portals has quit IRC[19:57:46] *** edwardjohn has quit IRC[20:05:46] *** doomlord_1 has joined ##OpenGL[20:08:44] *** Binero has quit IRC[20:10:47] *** karswell` has joined ##OpenGL[20:10:56] *** kestasjk has quit IRC[20:14:26] *** Stragus has quit IRC[20:17:22] *** void256 has joined ##OpenGL[20:21:42] *** drag0nius_ has quit IRC[20:22:55] *** goliath has joined ##OpenGL[20:28:16] *** asido has quit IRC[20:39:03] *** picassodvd has joined ##OpenGL[20:46:34] *** edwardjohn has joined ##OpenGL[20:46:38] *** Zerflag has quit IRC[20:50:11] *** Orion] has quit IRC[20:51:04] *** picassodvd has quit IRC[20:53:08] *** MLM has quit IRC[20:57:22] *** erhan_ has joined ##OpenGL[20:58:19] *** Ad1 has quit IRC[21:02:36] *** Suchorski has quit IRC[21:03:27] *** karswell` is now known as karswell[21:05:45] *** staylor has joined ##OpenGL[21:08:37] *** goliath has quit IRC[21:11:12] *** SugarCube has quit IRC[21:14:05] *** SugarCube has joined ##OpenGL[21:14:22] *** tha_grid has quit IRC[21:25:03] *** doomlord_1 has quit IRC[21:26:18] *** se_ has joined ##OpenGL[21:29:11] *** Nosezeichen has quit IRC[21:29:37] *** centrinia has joined ##OpenGL[21:34:38] *** se_ has quit IRC[21:34:42] *** kmnt has quit IRC[21:39:09] *** RockLee has joined ##OpenGL[21:42:11] *** razieliyo has quit IRC[21:53:14] *** Garner has quit IRC[21:57:56] *** Stragus has joined ##OpenGL[21:58:04] *** lenarhoyt has quit IRC[22:01:36] *** jdolan has joined ##OpenGL[22:05:45] *** kmnt has joined ##OpenGL[22:14:35] *** Garner has joined ##OpenGL[22:15:44] *** groton has joined ##OpenGL[22:18:23] *** ManDay has joined ##OpenGL[22:25:18] *** staylor_ has joined ##OpenGL[22:26:19] *** MLM has joined ##OpenGL[22:34:07] *** BreadProduct has joined ##OpenGL[22:36:03] *** kmnt has quit IRC[22:37:01] *** Keniyal has quit IRC[22:39:17] *** staylor_ has quit IRC[22:49:39] *** stefkos has quit IRC[22:49:47] *** Waynes has quit IRC[22:55:55] *** jdolan has quit IRC[22:56:34] *** XCVB has joined ##OpenGL[22:56:40] *** absof25 has joined ##OpenGL[22:57:16] *** Portals has joined ##OpenGL[23:00:03] *** abs25 has quit IRC[23:02:14] <Portals> I'm live, if anyone cares. twitch.tv/portalprogramming[23:04:11] *** edwardjohn has quit IRC[23:09:28] <Codex_> 42[23:10:09] <derhass> 23[23:11:32] <void256> 1337[23:11:40] <Codex_> I'm going through all points in 3d space, and it didnt kill my performance.[23:12:02] <Bloodust> that sentence made no sense[23:12:15] <derhass> Codex_: _all_ pojnts in 3d space? only chuck norris can do that[23:12:25] <void256> :)[23:12:44] <Yaniel> derhass: is that a problem?[23:13:14] <derhass> Yaniel: depends[23:13:50] <Codex_> I do get badalloc if I do 1000x1000x1000 sampling..[23:14:08] <Yaniel> I'm more interested in how you manage to prove you handle all points of an endless continuous space[23:14:15] *** b4b has quit IRC[23:14:27] <derhass> Yaniel: I don't.[23:14:34] <Yaniel> Portals: it says offline[23:14:52] <Yaniel> also[23:15:12] <Yaniel> playing "Game Development"[23:15:21] *** ManDay has quit IRC[23:15:40] <bob_twinkles> Codex_: assuming that you're using unsigned chars that's about a gigabyte of memory[23:16:35] *** Beetny has joined ##OpenGL[23:17:58] <Portals> Had some drivers issue,[23:18:08] <Portals> Yeah, I should change that. True[23:18:15] <Yaniel> Portals: if you are C literate you might want to take a look at the examples github linked in the channel topic[23:18:15] <Codex_> its actually 3 floats per point, but not all points need to be stored, since I discard large section of the space. But it consumes cycles for all the samples[23:18:21] <derhass> game development isn't a game[23:18:30] *** slidercrank has quit IRC[23:18:55] <Yaniel> it just sounded a bit like playing "house"[23:19:15] <void256> handmade hero is kinda cool tho[23:19:25] <Yaniel> although in the case of opengl it would be more like an asylum[23:19:33] <void256> but that's offtopic since he's not using opengl yet[23:19:36] <void256> sorry[23:19:41] <void256> OPENGL RULES \m/[23:21:57] <Portals> Thanks Yaniel[23:22:27] <Portals> I'm live again btw.[23:22:56] <Portals> The thing is, I'm getting a "Validation warning! - Sampler value sampler has not been set."[23:23:02] <Portals> Never had it before[23:24:10] <Portals> I'm using OpenGL void256. LWJGL, which is a bindning of OpenGL to Java[23:24:12] <bob_twinkles> well, are you setting the sampler value?[23:24:38] <void256> Portals: me too - LWJGL RULES TOO! \m/[23:24:40] <void256> ;)[23:24:50] <Portals> \m/[23:25:06] <derhass> wgat? lwjgl rules?[23:25:14] *** kuldeepdhaka has quit IRC[23:25:32] <Portals> bob_twinkles, well. In my rendering engine, I don't set it. And it works[23:25:54] <Portals> I'm going to check the github examples on glMapBufferRange[23:26:14] <Yaniel> well the error starts obviously at the point where java got involved ;)[23:26:30] <Yaniel> anyway[23:26:31] <Portals> :P[23:26:34] <bob_twinkles> samplers are automatically initialized to 0 (by deffinition, so you're safe)[23:26:48] <bob_twinkles> so that's probably why it works[23:26:55] <bob_twinkles> derhass: ^ I'm not making that up right?[23:27:08] <Yaniel> I'd have to check the spec on that[23:27:42] <Yaniel> but anyway practically things are initialized to "zero" values yes[23:28:04] <Yaniel> but still it is a bad idea to not initialize variables[23:28:33] *** Ad1 has joined ##OpenGL[23:28:38] *** derhass_ has joined ##OpenGL[23:29:31] <Yaniel> hmm, are you using ARB_debug_output?[23:30:00] <Portals> Yaniel, can I talk to you through the stream?[23:30:33] <Yaniel> I can hear you, but not chat[23:31:09] <Yaniel> do you use teh debug callback?[23:31:46] *** derhass has quit IRC[23:31:53] <Yaniel> well, the other way around then - where does that warning come from?[23:32:48] *** Shell32_ has joined ##OpenGL[23:33:09] <bob_twinkles> hmm, I can't find anything in the spec[23:33:20] <bob_twinkles> Portals: set yo uniforms![23:33:41] *** derhass_ is now known as derhass[23:34:23] *** garFF has joined ##OpenGL[23:34:25] *** jeffroman has joined ##OpenGL[23:34:42] <Yaniel> Portals: I'm pretty sure you are using glValidateProgram wrong[23:34:56] <Yaniel> or the if after it[23:35:12] <Yaniel> unless I'm missing something important about shaderProgram[23:36:36] *** garFF_ has joined ##OpenGL[23:36:42] <Yaniel> is it some integer like in the C api?[23:36:45] *** garFF has quit IRC[23:37:08] <Portals> http://pastebin.com/wB4gYLLq[23:39:06] <Yaniel> just having used the code before doesn't mean it is correct :D[23:39:12] <Yaniel> especially when it comes to graphics[23:39:46] <Yaniel> most drivers do some funky things to work around bugs in games or reasons nobody remembers anymore[23:40:30] <glYoda> "I'm not making that up right?" …all uniform state (as per the spec) is zero initialized[23:40:57] <glYoda> other states (i.e. attributes for instance) are initialized to predefined values as well[23:41:01] <glYoda> as per the spec[23:41:23] <glYoda> (0,0,0,1) for instance[23:46:54] <bob_twinkles> I thought so, but I wanted to be sure[23:47:07] <bob_twinkles> I don't have all 800 some pages memorized yet[23:47:17] <Yaniel> hehe[23:48:01] *** Syzygy_ has joined ##OpenGL[23:50:15] <Portals> Yaniel, seems to be some problem with the shaders, spooky. But the glMapBufferRange worked[23:51:06] <Yaniel> yes, your shader setup code has more than a couple of problems[23:51:42] *** Syzygy__ has quit IRC[23:52:00] *** staylor_ has joined ##OpenGL[23:52:45] <Portals> :([23:52:57] <Portals> I copied it wrong I guess[23:53:01] <Portals> From my old project[23:53:20] <Yaniel> I recommend checking the docs on how each of those functinos works[23:53:44] <Portals> Yaniel, I know how everything worked[23:53:55] <Portals> I copied the code cause I don't feel like rewriting it[23:54:03] <Yaniel> but you are checking the shader handle?[23:54:11] <Yaniel> it's just an arbitrary number anyway[23:54:22] *** cr`nge has quit IRC[23:54:47] <Portals> I was[23:55:37] *** aethersis has joined ##OpenGL[23:55:47] <aethersis> ok guys, I have something that will blow your minds[23:56:04] <derhass> my mind is already blown[23:56:21] <aethersis> how the fuck kernel based blur seems to be the same as jacobi method for solving poisson equation[23:56:31] <aethersis> for gods sake, it blew my mind! Am i missing something?![23:57:02] *** groton has quit IRC[23:57:25] <aethersis> if anyone explains this strange phenomenon to me, I will be incredibely thankful[23:57:58] <aethersis> you know what kernel based blur looks like, right? new = (N+S+W+E+C)/5[23:58:06] <aethersis> and guess what the jacobi method looks like? THE SAME![23:58:15] <void256> OMG![23:58:16] <aethersis> except that instead of c you have alpha times b[23:58:19] * void256 mind is blown ...[23:58:42] <aethersis> but in some special cases, it may be exactly the same and it actually is in numerical method presented by Jos Stam in his fluid dynamics paper[23:59:15] <aethersis> when I try to visualize it, it actually makes sense, since it calculates gradient of the scalar field, which is set of values of some discrete function[23:59:47] <aethersis> you got a point and once you process it using this method, it will blur around it, showing numerically how much the function grows around the point - it will create something like a "hill"