On 1 February 2013 21:02, Javier Sancho <j...@jsancho.org> wrote: > Aleix Conchillo is also working with OpenGL and encountered a problem > with glutInit and char**. You can see it at > http://lists.gnu.org/archive/html/guile-devel/2012-07/msg00074.html
Mark's suggestion is spot on, even points out one issue with memory that I have missed. It seems that Aleix later moved to a C binding, though I am confident this can be avoided (c.f. cl-opengl). Anyway, this function is working fine in the bindings I have prepared (sans the memory issue). GLUT bindings cover all functions, but missing constants. These to follow shortly. Andy's work on the sxml side has the GL bindings *almost* running as well. I'll look to finish those in the next few days if someone doesn't beat me to it. > Someone mentioned performance issues when using FFI, too. For modern GL programming without glBegin/End, Vertex/Color/Normal, etc. the performance impact of FFI should be negligable. There are few GL calls compared to the volume of data that is passed. The real critical part will be how the user manipulates their vertex data, if this is done frequently on the scheme side. Mapping (typed) bytevectors, or srfi-4 to gl arrays will help with that, and avoiding the implicit type conversions that some other bindings perform. > Well, I can't promise anything, but yes, I'm very interested in this project. Nice.
