NAME
al_lock_vertex_buffer - Allegro 5 API
SYNOPSIS
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#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:
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buffer - Vertex buffer to lock
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offset - Vertex index of the start of the locked range
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length - How many vertices to lock
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flags - ALLEGRO_LOCK_READONLY, ALLEGRO_LOCK_WRITEONLY or ALLEGRO_LOCK_READWRITE
SINCE
5.1.3