On Mon, Mar 10, 2003 at 10:23:07PM +0000, José Fonseca wrote:
> struct function_table {
> ...
> void (*BlendFunc)(GLcontext *ctx, GLenum sfactor, GLenum dfactor);
> ...
> } driver;
>
> and
>
> class Context {
> ...
> void BlendFunc(GLenum sfactor, GLenum dfactor);
> ...
> } ;
>
> You can't simply do
>
> driver.BlendFunc = Context::BlendFunc;
No, you can't do that. The problem is not the rhs as you seem to think
but the lhs. The rhs needs to be &Context::BlendFunc. What type does
that have? void (Context::*BlendFunc)(GLcontext *ctx, ...)
> As I said above this can be done in C++, and without damage to
> efficiency.
I doubt that. (JFTR, if I'm given the choice of programming in C++ or
C, I'll pick C++. I'm really not being a C zealot)
> class TNL {
> // A OpenGL function
> virtual void Coord3f(GLfloat x, GLfloat y, GLfloat z) = 0;
^^^^^^^
pure virtual method. Depending on what you want to do with this,
this will incur in a function call overhead, inline or not.
Marcelo
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