+
+/**
+ * Compute the max number of vertices which can be stored in
+ * a vertex buffer, given the current vertex size, and the amount
+ * of space already used.
+ */
+static inline unsigned
+vbo_compute_max_verts(const struct vbo_exec_context *exec)
+{
+ unsigned n = (VBO_VERT_BUFFER_SIZE - exec->vtx.buffer_used) /
+ (exec->vtx.vertex_size * sizeof(GLfloat));
+ if (n == 0)
+ return 0;
+ /* Subtract one so we're always sure to have room for an extra
+ * vertex for GL_LINE_LOOP -> GL_LINE_STRIP conversion.
+ */
+ n--;
+ return n;
+}
+
+