cl-opengl-devel September 2006

cl-opengl-devel@common-lisp.net

5 participants
8 discussions

[cl-opengl-devel] Re: Nehe Tutorials 1-6 are done.
by Charlie Burrows 29 Sep '06

29 Sep '06

On 9/28/06, Luís Oliveira <luismbo(a)gmail.com> wrote: > On 9/28/06, Charlie Burrows <charlie.burrows(a)gmail.com> wrote: > > p.s. sorry for double sending Luís; I just can trust gmail to dwim. > > Heh. No problem. Btw, I have my hands very full atm so it'll take a > while before I can look at your examples properly and integrate them. > So, my apologies in advance. > > -- > Luís Oliveira > http://student.dei.uc.pt/~lmoliv/ > Actually that's a good thing since they don't work against the latest cl-opengl version anyway. Originaly I had some trouble getting cl-opengl to compile so I got an older tar referenced in the archives of this list and I've been using that one. I just remembered and thought I'd check the latest again and it works (with a couple of changes) but my stuff doesn't. There's only a couple of issues with cl-opengl (under clisp 2.38 win32): #\Esc is not a valid key under clisp apparently and you can't compare characters to keys directly so (eql key #\Esc) must become (eql key (char-code #\Escape)). That's how it worked for me anyway. So you can hold off on looking at the nehes until I've had a chance to update them. Cheers, Charlie.

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[cl-opengl-devel] Re: Nehe Tutorials 1-6 are done.
by Charlie Burrows 29 Sep '06

29 Sep '06

On 9/28/06, Luís Oliveira <luismbo(a)gmail.com> wrote: > Send us a link. I'll put them in the cl-opengl tree. > Here they are, the website isn't yet but the link should still work. I still have some work to do, like putting back the comments for each line etc. Will I be able to use darcs to submit patches once it's up there? Also I sidestepped the whole image loading issue by putting all the image data (64x64x24 bits) into a lisp file. I'm open to suggestions. http://charlie.burrows.googlepages.com/nehe.tar.gz Enjoy! Charlie p.s. sorry for double sending Luís; I just can trust gmail to dwim.

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Re: [cl-opengl-devel] Nehe Tutorials 1-6 are done.
by Charlie Burrows 28 Sep '06

28 Sep '06

Sorry, I just realized that with the texture encapsulated in the lisp file there is really no need to include sunras.lisp. Also feel free to leave out nehe6.lisp and Cantelope-small.lisp if you don't like the encapsulted texture idea. I don't particularly like it either but I wouldn't know how to find the distribution directory to load the correct picture on an arbitrary machine. Cheers, Charlie

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[cl-opengl-devel] Nehe Tutorials 1-6 are done.
by Charlie Burrows 28 Sep '06

28 Sep '06

Hi, I've completed the Nehe tutorials 1-6. There is only one issue (the path to the texture image) which I will solve soon. My question is, how would you like me to submit it? I would just put it up on my personal website but I'd rather it was a part of the standard cl-opengl distribution because it is less likely to be marginalized . What do you think would be best? Cheers, Charlie

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[cl-opengl-devel] Nehe Tutorials
by Charlie Burrows 22 Sep '06

22 Sep '06

Ok so I'm dumb. Although to be fair to me it was a single character wrong! (gl:depth-test :equal) != (gl:depth-test :lequal). I'm guessing that my code (with the :equal) would only have displayed overlapping objects if their depth was equal. That sounds very silly to me! On with the examples ... Cheers, Charlie

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[cl-opengl-devel] Trying to do Nehe tutorials
by Charlie Burrows 22 Sep '06

22 Sep '06

Hi, I've been trying to do the nehe tutorials in cl-opengl and I've got the first two working but there's a small problem. It is probably an opengl issue rather than a cl-opengl problem but I'm sure all you nice people won't mind my ignorance (too much) and besides where else could I post my code and get a reply! Ok so I've got two classes; the first one works find (as far as it goes) the second also works but only if I don't enable depth testing. If I enable depth testing then the two shapes I draw disappear. The code is here: http://paste.lisp.org/display/26461 In the mean time I will continue with the tutorials. Cheers, Charlie --- Kenny made me do it!

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[cl-opengl-devel] Re: Trying to do Nehe tutorials
by Charlie Burrows 22 Sep '06

22 Sep '06

---------- Forwarded message ---------- From: Charlie Burrows <charlie.burrows(a)gmail.com> Date: Sep 22, 2006 9:02 AM Subject: Re: [cl-opengl-devel] Trying to do Nehe tutorials To: Ken Tilton <kentilton(a)gmail.com> On 9/21/06, Ken Tilton <kentilton(a)gmail.com> wrote: > I wonder why you ever see anything. Where are you setting the color? I must > be missing something since you say you see something without depth testing. > This is nehe-2? nehe-2 sets colors: White seems to be the default colour. From my reading of the Nehe site nehe-1 is just a window, nehe-2 is the two white shapes and nehe-3 is the example with the colour blended triangle and the blue square. In any case I have also done nehe-3 (my numbering) and it suffers the same affliction as the nehe-2. > kt > > ps. I suggest you make each example standalone and not try to inherit code > for lesson 2 from lesson 1 if this is going to be stuff in a public library. > Of course if you just want to mix in CLOS training I understand, but it may > compromise the value of the contrib to cl-opengl. kt I am starting to come around to your way of thinking although it seems like there will be a limited amount of inheritance; mostly from nehe-1 which just sets up the environment. We'll see as it develops but don't worry there's not much chance of my going clos crazy. Cheers, Charlie

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[cl-opengl-devel] Problem compiling cl-opengl for cmucl
by Thibault Langlois 01 Sep '06

01 Sep '06

Hello, I'm trying open-gl for the first time and I get the following error: Undefined foreign symbol: "glAttachShader" [Condition of type KERNEL:SIMPLE-PROGRAM-ERROR] Restarts: 0: [CONTINUE] Return NIL from load of #P"/home/tl/comp/lang/lisp/code/cl-opengl/gl/funcs.x86f". 1: [RETRY] Retry performing #<ASDF:LOAD-OP NIL {58E5F46D}> on #<ASDF:CL-SOURCE-FILE "funcs" {58DF96D5}>. 2: [ACCEPT] Continue, treating #<ASDF:LOAD-OP NIL {58E5F46D}> on #<ASDF:CL-SOURCE-FILE "funcs" {58DF96D5}> as having been successful. 3: [ABORT-REQUEST] Abort handling SLIME request. 4: [DESTROY] Destroy the process I am using cmucl 19c on a intel linux. I fetched cffi and cl-opengl from their respective websites today. Any advice ? Thibault Langlois --- The full session: CL-USER> (asdf:operate 'asdf:load-op 'cl-opengl) ; loading system definition from /home/tl/Projects/Systems/cl-opengl.asd ; into #<The ASDF0 package> ; Loading #P"/home/tl/comp/lang/lisp/code/cl-opengl/cl-opengl.asd". ; registering #<SYSTEM :CL-OPENGL {584F4DED}> as CL-OPENGL ; loading system definition from /home/tl/Projects/Systems/cffi.asd into ; #<The ASDF0 package> ; Loading #P"/home/tl/comp/lang/lisp/code/cffi-060626/cffi.asd". ; registering #<SYSTEM CFFI {5851DA7D}> as CFFI ; Compiling LAMBDA (.PV-CELL. .NEXT-METHOD-CALL. O C): ; Compiling Top-Level Form: ; Loading #P"/home/tl/comp/lang/lisp/code/cffi-060626/src/utils.x86f". ; Loading #P"/home/tl/comp/lang/lisp/code/cffi-060626/src/features.x86f". ; Loading #P"/home/tl/comp/lang/lisp/code/cffi-060626/src/cffi- cmucl.x86f". ; Loading #P"/home/tl/comp/lang/lisp/code/cffi-060626/src/package.x86f". ; Loading #P"/home/tl/comp/lang/lisp/code/cffi-060626/src/libraries.x86f". ; Loading #P"/home/tl/comp/lang/lisp/code/cffi-060626/src/early- types.x86f". ; Loading #P"/home/tl/comp/lang/lisp/code/cffi-060626/src/types.x86f". ; Loading #P"/home/tl/comp/lang/lisp/code/cffi-060626/src/enum.x86f". ; Loading #P"/home/tl/comp/lang/lisp/code/cffi-060626/src/strings.x86f". ; Loading #P"/home/tl/comp/lang/lisp/code/cffi-060626/src/functions.x86f". ; Loading #P"/home/tl/comp/lang/lisp/code/cffi-060626/src/foreign- vars.x86f". ; Loading #P"/home/tl/comp/lang/lisp/code/cl-opengl/gl/package.x86f". ; Loading #P"/home/tl/comp/lang/lisp/code/cl-opengl/gl/library.x86f". ; Loading #P"/home/tl/comp/lang/lisp/code/cl-opengl/gl/types.x86f". ; Loading #P"/home/tl/comp/lang/lisp/code/cl-opengl/gl/enums.x86f". ; Loading #P"/home/tl/comp/lang/lisp/code/cl-opengl/gl/funcs.x86f". ; Compilation unit aborted. ; Evaluation aborted CL-USER> (lisp-implementation-version) "19c (19C)" CL-USER> (lisp-implementation-type) "CMU Common Lisp" CL-USER> -- Thibault Langlois <tl(a)di.fc.ul.pt> FCUL / DI

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cl-opengl-devel September 2006