al_lock_vertex_buffer(1) Allegro 5 API

SYNOPSIS


#include <allegro5/allegro_primitives.h>
void* al_lock_vertex_buffer(ALLEGRO_VERTEX_BUFFER* buffer, int offset,
   int length, int flags)

DESCRIPTION

Locks a vertex buffer so you can access its data. Will return NULL if the parameters are invalid, if reading is requested from a write only buffer, or if the buffer is already locked.

Parameters:

  • buffer - Vertex buffer to lock
  • offset - Vertex index of the start of the locked range
  • length - How many vertices to lock
  • flags - ALLEGRO_LOCK_READONLY, ALLEGRO_LOCK_WRITEONLY or ALLEGRO_LOCK_READWRITE

SINCE

5.1.3

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