Derelict2 openGL3 issues

[Stephen Jones]

On Saturday, 21 April 2012 at 11:02:51 UTC, David wrote:
> glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, 0, null);//is 
> this right casting a void pointer for 0 offset?
>
>
> I do it like this: cast(void*)OFFSET; e.g.
> cast(void*)12;

Thankyou David. Just to complete the code for those who follow: 
it works if you change the above as follows:

glBufferData(GL_ARRAY_BUFFER, v.length * GL_FLOAT.sizeof, &v,
GL_STATIC_DRAW);

to:

glBufferData(GL_ARRAY_BUFFER, v.length * GL_FLOAT.sizeof, &v[0],
GL_STATIC_DRAW);


The null value in:

glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, 0, null);

can be replaced with cast(void*)0 as David suggests, but the code 
runs either way.

I don't quite understand the sizeof comment as 
writeln(GL_FLOAT.sizeof) gives me 4 which is what I expect.

Although this is not the place for it, I would just like to plug 
Pelles C ide:

http://my.opera.com/run3/blog/2012/02/09/d-programming-in-pelles-c

Simple to set up.