Question

I am generating the vertex arrays on the fly on each render and I want to delete the arrays afterwards. Does glDrawArrays immediately copy the vertex arrays to the server? Hence is it safe to delete the vertex arrays after calling glDrawArrays?

float * vp = GetVertices(); // Regenerated on each render
glVertexPointer(3, GL_FLOAT, 3 * sizeof(float), vp);
glDrawArrays(GL_TRIANGLES, 0, nVertices);
delete[] vp; // Can I do this?

Otherwise, how can I determine when it is safe to delete the vertex arrays?

Answer 1

Yes, it is copied immediately, so once you’ve done the call you can do whatever you like with the array.

Also, as dirkgently pointed out, you need to use delete[] vp to delete an array.