July 9, 2019 
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July 9, 2019 [00:00:55] *** bpmedley <bpmedley!~bpm@2600:1700:eb20:6050:502f:f5ab:598:20ef> has joined ##OpenGL[00:01:00] *** Goanna <Goanna!~AdiIRC@124-170-161-30.dyn.iinet.net.au> has quit IRC (Quit: Going offline, see ya! (www.adiirc.com))[00:05:01] *** Apeiron` <Apeiron`!~Apeiron@enigmavoid.com> has quit IRC (Quit: ZNC - http://znc.in - it's pretty ftw)[00:09:02] *** Apeiron` <Apeiron`!~Apeiron@enigmavoid.com> has joined ##OpenGL[00:16:03] *** shhuun_ <shhuun_!~shun@80.214.113.107> has quit IRC (Read error: Connection reset by peer)[00:16:36] *** DrGonzo <DrGonzo!~DrGonzo@modemcable080.164-57-74.mc.videotron.ca> has joined ##OpenGL[00:19:55] *** DrBenway <DrBenway!~DrBenway@modemcable080.164-57-74.mc.videotron.ca> has joined ##OpenGL[00:26:20] *** Goanna <Goanna!~AdiIRC@124-170-161-30.dyn.iinet.net.au> has joined ##OpenGL[00:26:27] *** krystcich <krystcich!~krystcich@088156132101.dynamic-ww-04.vectranet.pl> has quit IRC (Quit: Going offline, see ya! 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(www.adiirc.com))[05:05:32] *** blackhole <blackhole!~blackhole@unaffiliated/blackhole> has joined ##OpenGL[05:07:49] <blackhole> Hi, I have an interested scissor rect problem, I have a trianglestrip that occupies full screen, during one experiment I set the my scissor rect x to be larger than viewport width for e.g. I set my scissor rect to 400, 0, 50, 50 when my viewport was 0,0,200,200. Technically I shouldn't see any part of my triangle strip but it seems under some GPU scissor rect x is getting clamped at viewport width[05:08:13] <zid> clamped, or ignored? I'd have expect it to ignore it[05:08:26] <zid> because every vert is outside of the clipspace[05:08:39] <blackhole> zid, I agree ignored problem since querying scissor rect still give me what I set[05:09:07] <blackhole> Under some GPU's (specifically intel on mac) there is bit of triangle pixels that are still visible as if I had it set to 200,0,50,50[05:09:31] <blackhole> zid, you mean very vert of scissor rect?[05:09:39] <zid> yea[05:09:52] <zid> if they're all outside the clipspace, it may ignore it, I don't read the spec though so who knows[05:10:05] <blackhole> zid, so it this expected? I tested it with many GPU and most of them works[05:10:40] <zid> oh scissors are in screenspace?[05:10:44] <blackhole> zid, yeh[05:10:45] <zid> that makes more sense why did I think otherwise[05:10:57] <blackhole> they are in pixel/screen space[05:10:58] <zid> you enabled GL_SCISSOR_TEST[05:11:02] <blackhole> of course[05:11:07] <blackhole> it worked almost everywhere[05:11:11] <blackhole> other than very specific machines[05:11:52] <zid> I mean, I'd never ever rule out driver bugs, but I can't say I've read the spec for what various coordinates mean regarding rounding and stuff[05:12:22] <zid> no errors or anything I take it?[05:12:34] <blackhole> nope, no error reported checked using gl.getError[05:12:46] <zid> callback often gives way way more info, and warnings[05:13:00] <zid> if you've already buggered something up earlier it may 'work' but not work[05:13:02] *** mukunda <mukunda!~mukunda@adsl-74-240-51-91.jan.bellsouth.net> has joined ##OpenGL[05:13:13] <blackhole> zid, I m on webgl, not sure how I setup callbacks[05:13:20] <zid> if it's clean of warnings via the error callback, and it works on some implementations but not others i'd call driver bug[05:13:22] <blackhole> zid, I usually use gl.getError[05:13:35] <blackhole> zid, browser would display warning if there would be one[05:13:53] <zid> ah so it just dumps it to the js console by default?[05:14:01] *** Lord-Kam_ <Lord-Kam_!~Lord-Kami@pc-250-87-104-200.cm.vtr.net> has quit IRC (Ping timeout: 244 seconds)[05:14:05] <blackhole> zid, yeh warnings get dumped to js consoles[05:14:09] <zid> https://www.khronos.org/webgl/wiki/Debugging has some stuff[05:14:14] <blackhole> zid, for error you gotta use gl.getError[05:14:18] <zid> WebGLDebugUtils.makeDebugContext(canvas.getContext("webgl"));[05:14:35] <blackhole> yeh, that is nice[05:14:39] <blackhole> I should integrate that[05:15:03] <zid> if that's clean I'd call it a driver bug if it works on some places but not others[05:15:22] <blackhole> it works on every windows & linux system I tried and many mac I tried as well[05:15:24] <zid> if you've got errors, fix those first, even my retail nvidia driver just flat out crashes in later function calls sometimes if I ignore an error[05:15:30] <zid> from an earlier call[05:15:32] <blackhole> some mac mini with intel gpu gave me this problem[05:15:35] *** Lord-Kamina <Lord-Kamina!~Lord-Kami@pc-250-87-104-200.cm.vtr.net> has joined ##OpenGL[05:15:39] <zid> it 'works' but destroying shaders crashes or whatever[05:16:06] <zid> osx or not?[05:16:14] <zid> osx opengl + intel sounds like a recipe for disaster[05:16:33] <blackhole> zid, yes osx , macOS Mojave[05:16:36] *** Goanna <Goanna!~AdiIRC@124-170-161-30.dyn.iinet.net.au> has joined ##OpenGL[05:16:48] <blackhole> Graphics is intel UHD Graphics 630[05:24:23] *** learningc <learningc!~learningc@mti-37-145.tm.net.my> has quit IRC (Remote host closed the connection)[05:25:11] *** learningc <learningc!~learningc@mti-37-145.tm.net.my> has joined ##OpenGL[05:28:16] *** Xophosaurus <Xophosaurus!~yay@dhcp-108-168-68-229.cable.user.start.ca> has joined ##OpenGL[05:29:16] *** hellozee <hellozee!~hellozee@2409:4066:13:994:2c88:ea58:15e2:bc3f> has joined ##OpenGL[05:33:26] *** ephemer0l <ephemer0l!~ephemer0l@pentoo/user/ephemer0l> has joined ##OpenGL[06:00:43] *** blackhole <blackhole!~blackhole@unaffiliated/blackhole> has quit IRC (Quit: Leaving)[06:04:49] *** cshzg <cshzg!~dietary@181.53.12.20> has quit IRC (Ping timeout: 248 seconds)[06:05:11] *** Goanna <Goanna!~AdiIRC@124-170-161-30.dyn.iinet.net.au> has quit IRC (Quit: Going offline, see ya! 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If I want to check for SPIRV support in OGL, can I check for one extension, or this list - https://www.khronos.org/registry/spir-v/#extensions ?[11:37:06] <karalaine> Smilex: those are extensions to spirv itself[11:37:13] <karalaine> there is two of those: https://www.khronos.org/opengl/wiki/SPIR-V[11:37:33] *** shamayimjosh[m] <shamayimjosh[m]!shamayimjo@gateway/shell/matrix.org/x-inkbypkykeczufvb> has joined ##OpenGL[11:37:46] *** shamayimjosh[m] <shamayimjosh[m]!shamayimjo@gateway/shell/matrix.org/x-inkbypkykeczufvb> has left ##OpenGL[11:38:05] <karalaine> where ARB_spirv_extensions require ARB_gl_spirv to be present[11:39:39] <karalaine> and of course if you have core 4.6 context it will be available[11:40:18] <Smilex> karalaine: ok thanks[11:44:30] *** dansho <dansho!~dansho4@71-84-161-204.dhcp.astr.or.charter.com> has quit IRC (Remote host closed the connection)[11:45:55] *** goiko <goiko!~goiko@unaffiliated/goiko> has joined ##OpenGL[11:49:07] *** random_yanek <random_yanek!~random_ya@host-89-230-175-3.dynamic.mm.pl> has quit IRC (Ping timeout: 268 seconds)[11:55:38] *** random_yanek <random_yanek!~random_ya@87.116.237.74> has joined ##OpenGL[12:04:18] *** snyp <snyp!~Snyp@106.51.20.31> has joined ##OpenGL[12:05:09] *** pie_ <pie_!~pie_@unaffiliated/pie-/x-0787662> has joined ##OpenGL[12:07:07] *** shhuun_ <shhuun_!~shun@185.56.227.4> has quit IRC (Ping timeout: 245 seconds)[12:26:48] *** DrGonzo <DrGonzo!~DrGonzo@modemcable080.164-57-74.mc.videotron.ca> has joined ##OpenGL[12:28:49] *** karab44 <karab44!~karab44@unaffiliated/karab44> has joined ##OpenGL[12:33:45] *** slime <slime!~slime73@blk-215-81-93.eastlink.ca> has joined ##OpenGL[12:43:53] *** Jubei <Jubei!~Jubei@hcimac15.informatik.uni-hamburg.de> has joined ##OpenGL[12:53:22] *** slime <slime!~slime73@blk-215-81-93.eastlink.ca> has quit IRC (Quit: This computer has gone to sleep)[13:00:10] *** Twipply <Twipply!~Twipply@unaffiliated/twipply> has joined ##OpenGL[13:11:11] *** mukunda <mukunda!mukunda@adsl-74-240-51-91.jan.bellsouth.net> has joined ##OpenGL[13:14:00] *** MatSharrow <MatSharrow!~matthew@3.21.115.87.dyn.plus.net> has joined ##OpenGL[13:19:23] *** Lucretia <Lucretia!~Luke@pdpc/supporter/active/lucretia> has quit IRC (Quit: Konversation terminated!)[13:23:22] *** immibis <immibis!~immibis@222-153-90-196-fibre.sparkbb.co.nz> has quit IRC (Ping timeout: 246 seconds)[13:23:31] *** Lucretia <Lucretia!~Luke@pdpc/supporter/active/lucretia> has joined ##OpenGL[13:24:02] *** shhuun_ <shhuun_!~shun@185.56.227.4> has joined ##OpenGL[13:34:25] *** snyp <snyp!~Snyp@106.51.20.31> has quit IRC (Ping timeout: 248 seconds)[13:38:32] *** Goanna <Goanna!~AdiIRC@124-170-161-30.dyn.iinet.net.au> has quit IRC (Quit: Going offline, see ya! 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ZZZzzz…)[15:55:28] *** Lord-Kamina <Lord-Kamina!~Lord-Kami@pc-250-87-104-200.cm.vtr.net> has joined ##OpenGL[15:58:14] *** ephemer0l <ephemer0l!~ephemer0l@pentoo/user/ephemer0l> has joined ##OpenGL[16:03:47] *** karab44 <karab44!~karab44@unaffiliated/karab44> has quit IRC ()[16:12:58] *** bayoubengal <bayoubengal!~bayoubeng@rrcs-50-84-94-202.sw.biz.rr.com> has quit IRC (Ping timeout: 272 seconds)[16:15:17] *** alexeightsix <alexeightsix!1825550a@modemcable010.85-37-24.static.videotron.ca> has joined ##OpenGL[16:15:30] <alexeightsix> 'm new to OpenGL/weblGL but I have a question on how to convert a gl context to a png image?The string i'm working on looks like: - -->0<!-- -->0<!-- -->0 (really long string)I need to convert this to an image..[16:15:42] <alexeightsix> I'm using NodeJS with headlessGL.. not sure if anyone knows[16:16:58] *** Jubei <Jubei!~Jubei@hcimac15.informatik.uni-hamburg.de> has quit IRC (Quit: Embrace the Inevitable)[16:17:05] *** MatSharrow <MatSharrow!~matthew@3.21.115.87.dyn.plus.net> has quit IRC (Ping timeout: 248 seconds)[16:18:20] *** bayoubengal <bayoubengal!~bayoubeng@rrcs-50-84-94-202.sw.biz.rr.com> has joined ##OpenGL[16:26:03] *** Karyon <Karyon!~Karyon@unaffiliated/karyon> has joined ##OpenGL[16:29:35] <BPL> alexeightsix: readPixels should do => https://www.khronos.org/registry/webgl/specs/latest/2.0/[16:30:11] <alexeightsix> this will transform that string with <!--0 ....> to an array?[16:30:27] <alexeightsix> then i can parse it with save-pixels? https://www.npmjs.com/package/save-pixels[16:31:11] *** Karyon <Karyon!~Karyon@unaffiliated/karyon> has quit IRC (Ping timeout: 258 seconds)[16:31:19] <BPL> haven't used webgl for ages... but If I recall correctly you'd allocate some array with, how was it Uint8Array, read the back buffer and then just dump that array into the file format you wanted[16:31:43] <BPL> this one, https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array[16:32:46] <BPL> ie: var buffer = new Uint8Array(num_components*buf_width*buf_height); where usually num_components=4 if you're using GL_RGBA with readPixels[16:34:30] *** Karyon <Karyon!~Karyon@unaffiliated/karyon> has joined ##OpenGL[16:40:11] <alexeightsix> BPL, thx[16:44:24] <derhass> alexeightsix: what do you even mean by "the string I'm working on"[16:44:33] <derhass> what is this string supposed to represent?[16:44:40] <derhass> and what does it have to do with opengl?[16:46:21] *** alexeightsix <alexeightsix!1825550a@modemcable010.85-37-24.static.videotron.ca> has quit IRC (Remote host closed the connection)[16:47:38] *** karab44 <karab44!~karab44@unaffiliated/karab44> has joined ##OpenGL[16:59:51] *** linux_dr <linux_dr!uid130126@gateway/web/irccloud.com/x-nfbpwysjlngxmudc> has joined ##OpenGL[17:00:56] *** gehn <gehn!gehn@gateway/vpn/privateinternetaccess/gehn> has joined ##OpenGL[17:32:51] *** d3x0r <d3x0r!~d3x0r@ip174-72-226-164.lv.lv.cox.net> has joined ##OpenGL[17:45:23] *** DrBenway <DrBenway!~DrBenway@modemcable080.164-57-74.mc.videotron.ca> has joined ##OpenGL[17:48:26] *** lilabsence <lilabsence!~RizzoTheR@host-091-097-037-179.ewe-ip-backbone.de> has joined ##OpenGL[17:49:52] *** DrBenway <DrBenway!~DrBenway@modemcable080.164-57-74.mc.videotron.ca> has quit IRC (Ping timeout: 268 seconds)[18:05:41] *** Lucretia <Lucretia!~Luke@pdpc/supporter/active/lucretia> has quit IRC (Remote host closed the connection)[18:08:36] *** KAHR-Alpha <KAHR-Alpha!~Alpha@2a01cb0d024a66002498239ece889b79.ipv6.abo.wanadoo.fr> has joined ##OpenGL[18:10:37] *** Lucretia <Lucretia!~Luke@pdpc/supporter/active/lucretia> has joined ##OpenGL[18:10:39] *** borkr <borkr!~borkr@static243-215-65.mimer.net> has joined ##OpenGL[18:13:11] *** karab44 <karab44!~karab44@unaffiliated/karab44> has quit IRC ()[18:14:02] *** ville <ville!~ville@212-149-214-47.bb.dnainternet.fi> has quit IRC (Quit:)[18:15:07] *** ImQ009 <ImQ009!~ImQ009@unaffiliated/imq009> has joined ##OpenGL[18:18:34] *** ville <ville!~ville@212-149-214-47.bb.dnainternet.fi> has joined ##OpenGL[18:27:28] *** charlie5 <charlie5!~rod@pa49-181-153-64.pa.nsw.optusnet.com.au> has quit IRC (Read error: No route to host)[18:37:45] *** glYoda <glYoda!~kristinam@c-73-25-27-206.hsd1.or.comcast.net> has quit IRC (Quit: glYoda)[18:37:50] *** groton <groton!~groton@unaffiliated/groton> has joined ##OpenGL[18:44:18] *** Kane <Kane!~Kane@home.yarg.fr> has joined ##OpenGL[18:46:18] *** groton <groton!~groton@unaffiliated/groton> has quit IRC (Quit: groton)[18:52:21] *** krystcich <krystcich!~krystcich@088156132238.dynamic-ww-04.vectranet.pl> has joined ##OpenGL[19:04:31] *** ratchetfreak <ratchetfreak!c351a8d8@195.81.168.216> has quit IRC (Ping timeout: 260 seconds)[19:06:01] *** Smilex <Smilex!~ian@87-49-146-31-mobile.dk.customer.tdc.net> has quit IRC (Ping timeout: 246 seconds)[19:21:28] *** ipe <ipe!~ipe@91-156-247-55.elisa-laajakaista.fi> has quit IRC (Remote host closed the connection)[19:40:00] *** Smilex <Smilex!~ian@87-49-146-31-mobile.dk.customer.tdc.net> has joined ##OpenGL[19:53:15] *** borkr <borkr!~borkr@static243-215-65.mimer.net> has quit IRC (Read error: Connection reset by peer)[19:53:42] *** borkr <borkr!~borkr@static243-215-65.mimer.net> has joined ##OpenGL[19:57:57] *** cshzg <cshzg!~dietary@181.53.12.20> has quit IRC (Ping timeout: 245 seconds)[19:58:25] *** ciaala <ciaala!~crypt@2a02:120b:2c1f:5f40:6ef0:49ff:feee:4777> has joined ##OpenGL[20:01:59] *** tab-key <tab-key!~mantra@2601:601:c980:8fd:9529:9608:3123:369d> has joined ##OpenGL[20:33:26] *** telex <telex!teletype@freeshell.de> has quit IRC (Remote host closed the connection)[20:34:36] *** telex <telex!teletype@freeshell.de> has joined ##OpenGL[20:46:44] *** charlie5 <charlie5!~rod@pa49-181-153-64.pa.nsw.optusnet.com.au> has joined ##OpenGL[20:47:35] *** nitroxis <nitroxis!n@nxs.re> has quit IRC (Quit: nitroxis)[20:48:28] *** stefkos <stefkos!~Pawel@79.184.72.6.ipv4.supernova.orange.pl> has quit IRC (Read error: Connection reset by peer)[20:48:41] *** nitroxis <nitroxis!n@nxs.re> has joined ##OpenGL[20:50:48] *** dansho <dansho!~dansho4@71-84-161-204.dhcp.astr.or.charter.com> has joined ##OpenGL[21:09:12] *** CoolerZ <CoolerZ!~coolerext@14.139.38.136> has quit IRC (Quit: Leaving)[21:10:18] *** iderik <iderik!~weechat@h-162-65.A147.priv.bahnhof.se> has quit IRC (Quit: iderik)[21:15:59] *** shhuun_ <shhuun_!~shun@ip-213-127-96-197.ip.prioritytelecom.net> has joined ##OpenGL[21:16:17] *** slidercrank <slidercrank!~slidercra@ircpuzzles/2015/april-fools/fifth/slidercrank> has joined ##OpenGL[21:21:29] *** ImQ009 <ImQ009!~ImQ009@unaffiliated/imq009> has quit IRC (Quit: Leaving)[21:26:56] *** Singmyr <Singmyr!~Singmyr@c83-253-123-62.bredband.comhem.se> has quit IRC (Quit: My MacBook has gone to sleep. 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