Re: Merging the OpenGLRaw and gl packages
Sven Panne <[email protected]> Sun, 10 Jan 2016 20:42:56 +0100
| Newsgroups | gmane.comp.lang.haskell.cafe,gmane.comp.lang.haskell.hopengl |
|---|---|
| Message-ID | <CANBN=mukYRbog07VR3Tt56rg5kdfw3HK5uQVEDXfPDYZc9=5KQ@mail.gmail.com> |
--===============3837181670683411586== Content-Type: multipart/alternative; boundary=047d7b8738b6ee067905290006c5 --047d7b8738b6ee067905290006c5 Content-Type: text/plain; charset=UTF-8 After some discussions and looking at the diffs needed to make the `luminance` package and Oliver Charles' SSAO-example use OpenGLRaw instead of gl, I decided to change the types of GL_TRUE and GL_FALSE from GLenum to GLboolean. When these enums are used as parameters, their type is almost always GLboolean, with glClampColor being the only exception. Some general retrieval functions like glProgramiv return boolean values as GLint, but that seems to be the rarer use case. OpenGL is very loosely typed, so you will have to use some fromIntegral calls, even if the enum patterns were more polymorphic. After several decades of computer science and having seen tons of bugs caused by them, I have a strong aversion to implicit conversions, so I'm still convinced that the monomorphic enums are the right thing. :-) I made a new release of OpenGLRaw ( https://github.com/haskell-opengl/OpenGLRaw/releases/tag/v3.1.0.0), which in addition to this typing change contains some "mkFoo" synonyms for the "makeFoo" functions, too, a difference between OpenGLRaw and gl I didn't notice earlier. Cheers, S. --047d7b8738b6ee067905290006c5 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr">After some discussions and looking at the diffs needed to = make the `luminance` package and Oliver Charles' SSAO-example use OpenG= LRaw instead of gl, I decided to change the types of GL_TRUE and GL_FALSE f= rom GLenum to GLboolean. When these enums are used as parameters, their typ= e is almost always GLboolean, with glClampColor being the only exception. S= ome general retrieval functions like glProgramiv return boolean values as G= Lint, but that seems to be the rarer use case. OpenGL is very loosely typed= , so you will have to use some fromIntegral calls, even if the enum pattern= s were more polymorphic. After several decades of computer science and havi= ng seen tons of bugs caused by them, I have a strong aversion to implicit c= onversions, so I'm still convinced that the monomorphic enums are the r= ight thing. :-)<div><br></div><div>I made a new release of OpenGLRaw (<a hr= ef=3D"https://github.com/haskell-opengl/OpenGLRaw/releases/tag/v3.1.0.0">ht= tps://github.com/haskell-opengl/OpenGLRaw/releases/tag/v3.1.0.0</a>), which= in addition to this typing change contains some "mkFoo" synonyms= for the "makeFoo" functions, too, a difference between OpenGLRaw= and gl I didn't notice earlier.<br></div><div><br></div><div>Cheers,</= div><div>=C2=A0 =C2=A0S.</div></div> --047d7b8738b6ee067905290006c5-- --===============3837181670683411586== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Haskell-Cafe mailing list [email protected] http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell-cafe --===============3837181670683411586==--