October 2007 - cl-opengl-devel - mailman3.common-lisp.net

[cl-opengl-devel] Fun GPLed Common Lisp OpenGL Molecule Viewer
by doug＠hcsw.org 21 Dec '07

21 Dec '07

Hi LispNYC/cl-opengl-devel! I just released a new Common Lisp program that I quickly hacked for a school assignment and have since cleaned up a bit. We were supposed to use C but I, of course, used lisp. :) It's a fancy 3D, interacive viewer for molecules using the OpenGL graphics libraries and the awesome cl-opengl bindings. Currently included molecules: water, ethanol. Read more about it and download it here: http://hcsw.org/blog.pl I was wondering if anyone can confirm this works for them on whatever environments or has any other comments. Also, cl-opengl-devel: feel free to include it as an example with the bindings if you feel it will help anyone! The random walk framerate testing mode is neat. The code is also good for getting an intuitive feeling for how GL lighting works as well as a good example of using rotation matrices in CL (gl:with-pushed-matrix is brilliant). But as the blog post concludes: The next generation of this program will not be a way to view molecules, but instead a way of interactively exploring diverse types polyhedron, like, for instance, the icosahedron and the infinite class of anti-prisms. And don't forget that every polyhedron has a dual (where the centre of each face becomes a vertex). Flipping between a polyhedron and its dual in real-time will be sweet. Doug Hoyte Chief Operating Officer HCSW Silicon Graphics Division

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[cl-opengl-devel] RFC: Merging thomas branch into main
by Charlie McMackin 19 Dec '07

19 Dec '07

Since Luís hinted in a previous message to the list that consensus need be sought on whether or not to merge cl-opengl-thomas in to the main tree, I thought I would get the ball rolling for when he is free to do so (or not as the case may warrant). I offer these points as pro-merge: - With CFFI-new-types merged into CFFI-main, the main cl-opengl repo probably won't compile for anyone starting out using 'darcs get' or (require :cl-opengl) and will break for anyone using 'darcs pull' - Most recent patches have been requested to patch against the thomas branch - As far as I know, there's been no regression in the GL functionality area merge cons: - In it's current state, thomas will break some cl-glut-examples demos Anyone concluding differently or similarly? Comments? Charlie McMackin

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[cl-opengl-devel] Patch for faster texture uploads
by Bart Botta 19 Dec '07

19 Dec '07

gl:tex-image-2d seems a bit slow (~23 sec for a 1k by 1k texture on SBCL 1.0.2 win32), attached patch speeds it up ~100x (to ~0.25 sec). Problem was that the element type in with-opengl-array wasn't constant (since it had been passed as a parameter to tex-image-2d) so cffi couldn't optimize for a specific type. Patch moves the type check out of the copy loop, and duplicates the loop for each type, so each case can be optimized individually. -- Bart

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[cl-opengl-devel] Patch for texture coord generation.
by Mikael Lax 19 Dec '07

19 Dec '07

Hello, I've made a small patch to implement tex-gen (see 2.11.4). I had use of it the other day and I saw it was missing. I also noticed two small typos in package.lisp that I fixed (wrong sections being referenced in 2.11.*). Sincerely, Mikael Lax

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[cl-opengl-devel] Patch for some shader/object queries.
by Mikael Lax 19 Dec '07

19 Dec '07

Hello, I've implemented some of the functions in section 6.1.14 Shader and Program Queries. This also led to the FIXMEs in get-active-attrib and get-active-uniform being fixed (they relied on fixed buffer-sizes which are now queried). Sincerely, Mikael Lax

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[cl-opengl-devel] texture coord array
by Dmitri Hrapof 19 Dec '07

19 Dec '07

Hello! On SBCL 1.0.9 (if it matters) I had to slightly edit EMIT-GL-ARRAY-BIND-CLAUSE, writing "%gl:tex-coord-pointer" instead of just "tex-coord-pointer", otherwise it complained at run-time that "CL-OPENGL::TEX-COORD-POINTER" was undefined. By the way, what's planned for quadrics and nurbs? CLOS classes with finalizers? Sincerely yours, Dmitri

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[cl-opengl-devel] glut on macosx and shader
by oyuki 19 Dec '07

19 Dec '07

hi ,im new in this list. i was trying to install cl-opengl on a macosx 10.4.9 but the glut part didnt work, so i installed a binding a friend did .... and now is working fine... i want to know why is not working glut on macosx ... is there any way to fix this? my second question is: i want to load a shader to a surface in opeglcl... all the examples i found are in c++ ... Do anybody has any code to loading shaders in opengl.. what would like to share? many thanks oyuki -- oyuki oyuki_kuroiwa(a)fastmail.fm -- http://www.fastmail.fm - Send your email first class

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