cl-opengl-devel

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214 discussions

Re: [cl-opengl-devel] How to install/run the demo code?
by John Crawford 04 Aug '12

04 Aug '12

Well, to partially answer my own question :) I was thinking that quicklisp downloaded everything it need, not realizing that GLUT is a separate library. I found a Windows binary glut32.dll here: http://www.opengl.org/resources/libraries/glut/ However - their installation instructions consist of copying the glut32.dll to C:\windows\system32. Which I did. But how do I tell Lispworks to *find* that dll? Thanks again. John C>

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Re: [cl-opengl-devel] How to install/run the demo code?
by John Crawford 03 Aug '12

03 Aug '12

Thanks for the replies, I'm making progress. However, it still isn't loading, and I'm not sure if it's a missing library, or maybe miscompiled, or what. The steps I've done so far are: (quicklisp-quickstart:install) - worked (ql:quickload "cl-opengl") - worked (ql:quickload :cl-glut-examples) - fails with this output: ====================== CL-USER 6 > (ql:quickload :cl-glut-examples) To load "cl-glut-examples": Load 1 ASDF system: cl-glut-examples ; Loading "cl-glut-examples" Error: Unable to load foreign library (GLUT). Could not register handle for external module GLUT: The specified module could not be found.. ==================== Yet everything *looks* like it's there: CL-GLUT 26 : 2 > (ql:system-apropos "glu" + "cffi" + "opengl") #<QL-DIST:SYSTEM cl-glfw-glu / cl-glfw-20120703-git / quicklisp 2012-07-03> #<QL-DIST:SYSTEM cl-glu / cl-opengl-20120520-git / quicklisp 2012-07-03> #<QL-DIST:SYSTEM cl-glut / cl-opengl-20120520-git / quicklisp 2012-07-03> #<QL-DIST:SYSTEM cl-glut-examples / cl-opengl-20120520-git / quicklisp 2012-07-03> #<QL-DIST:SYSTEM cffi / cffi_0.10.7.1 / quicklisp 2012-07-03> #<QL-DIST:SYSTEM cl-opengl / cl-opengl-20120520-git / quicklisp 2012-07-03> Any ideas on while it's failing to load? Thanks. John C>

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[cl-opengl-devel] Fwd: How to install/run the demo code?
by Luís Oliveira 03 Aug '12

03 Aug '12

(ups. Also forgot to Cc the list.) ---------- Forwarded message ---------- From: Luís Oliveira <luismbo(a)gmail.com> Date: Fri, Aug 3, 2012 at 4:02 PM Subject: Re: [cl-opengl-devel] How to install/run the demo code? To: John Crawford <cyclops(a)speakeasy.net> On Fri, Aug 3, 2012 at 2:42 PM, John Crawford <cyclops(a)speakeasy.net> wrote: > How do I install and run the demo code? I'm running Lispworks PE 6.01 on > Windows, I've installed quicklisp and ran: (ql:quickload "cl-opengl") which > seemed to download the library. But so far I haven't managed to run the demo > examples. Thanks. (ql:quickload "cl-glut-examples") loads the examples. (cl-glut-examples:list-examples) lists the available examples which you can run individually. There's also a run-examples function which runs all examples simultaneously. HTH, -- Luís Oliveira http://r42.eu/~luis/ -- Luís Oliveira http://r42.eu/~luis/

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[cl-opengl-devel] How to install/run the demo code?
by John Crawford 03 Aug '12

03 Aug '12

How do I install and run the demo code? I'm running Lispworks PE 6.01 on Windows, I've installed quicklisp and ran: (ql:quickload "cl-opengl") which seemed to download the library. But so far I haven't managed to run the demo examples. Thanks. John C>

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[cl-opengl-devel] Documentation status?
by John Crawford 03 Aug '12

03 Aug '12

Looking back through the archives, I see a post in 2010 about the documentation not yet having created. Is that still the case? If it *does* exist (or can be created), how/where would it be? Thanks. John C>

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[cl-opengl-devel] gl-array count
by Chris Bagley 19 Jul '12

19 Jul '12

I've been slowly getting my head round the gl-array macros and there is one last thing that is confusing me In this struct, size is set to the type of unsigned byte...why? It seem that this stores the length of the foreign array which, as far as I can tell from CFFI doco, is an integer. (defstruct (gl-array (:copier nil)) "Pointer to C array with size and type information attached." (pointer (null-pointer)) (size 0 :type unsigned-byte) (type nil :type symbol)) There's probably something I'm missing and if anyone can explain that would be great! Thanks folks

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[cl-opengl-devel] Thanks to all
by Chris Bagley 18 Jul '12

18 Jul '12

In open source software it can often seem that not many people are using what you are creating. So as one of the silent lurkers around these parts I just want to say thank-you. I have only recently got into common lisp and cl-opengl has given me a chance to have something FUN to put my efforts into. It can be hard to get enthused about some of the more esoteric sides of lisp, but when it goes into upping frame rates or making virtual explosions suddenly the reason for studying it seems obvious! So aye, thanks for all your work, hopefully I'll have something playable soonish. Cheers Baggers

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[cl-opengl-devel] Соберем gля Вас по сети интeрнет базу gанных
by cl-opengl-devel＠common-lisp.net 21 Jun '12

21 Jun '12

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[cl-opengl-devel] Texture coordinates using vertex array
by Deepak Surti 16 May '12

16 May '12

Hi, I have written a small library using cl-opengl to do skeletal animation which works great. I use vertex arrays in the process. As outlined in opengl-array.lisp under examples, I have a gl array of vertices. To the vertex object in the gl array I added texture coordinates: (gl:tex-coord :type float :components (u v)) In my code, (just like enable vertex and color array); I enable tex coord array ; all texture loading code and creating gl vertices/indices code (gl:enable-client-state :texture-coord-array) ....... (gl:bind-gl-vertex-array gl-vertices) (gl:draw-elements :triangles gl-indices) ........ (gl:enable-client-state :texture-coord-array) However it leads to a memory segment address error. If I go the primitive route, rendering the triangle vertices and texture coordinates, things work fine. Obviously, as for texture coordinates with draw elements; I am missing something. I tried looking up into the source/examples but could not find. [PS: i am no C expert, so am stuck here] Any help appreciated, Let me know in case of any questions, Thanks and Regards, Deepak -- To see a miracle, be the miracle.

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[cl-opengl-devel] Extension functions re-defining themselves
by Jocelyn Fréchot 01 Apr '12

01 Apr '12

Hello, I’d like to report the folling issue I bumped into: in the cl-opengl-bindings package, extension functions defined with defglextfun will re-define themselves the first time they are called. This is somewhat an unexpected and potentially undesirable behavior: if you store one of those function objects before calling it, it will compile a new object every time it is funcalled. Thanks -- Jocelyn

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