Re: GL_BLEND
Sven Panne <[email protected]>
| Newsgroups | gmane.comp.lang.haskell.hopengl |
|---|---|
| Message-ID | <[email protected]> |
Glynn Clements wrote:
> Does this rely upon the underlying OpenGL implementation/driver
> supporting glBlendEquation() (i.e. OpenGL 1.3 or 1.2+GL_ARB_imaging)?
Yes, blendEquation depends on the glBlendEquationEXT extension function.
If the extension is not supported, an exception with the message
unknown OpenGL call glBlendEquationEXT, check for GL_EXT_blend_minmax or GL_EXT_blend_subtract or OpenGL 1.4
should be thrown, not a segfault. This is a bit mysterious...
Cheers,
S.