+/**
+ * This function is used to copy an array of pipe_vertex_buffer structures,
+ * while properly referencing the pipe_vertex_buffer::buffer member.
+ *
+ * \sa util_copy_framebuffer_state
+ */
+static INLINE void util_copy_vertex_buffers(struct pipe_vertex_buffer *dst,
+ unsigned *dst_count,
+ const struct pipe_vertex_buffer *src,
+ unsigned src_count)
+{
+ unsigned i;
+
+ /* Reference the buffers of 'src' in 'dst'. */
+ for (i = 0; i < src_count; i++) {
+ pipe_resource_reference(&dst[i].buffer, src[i].buffer);
+ }
+ /* Unreference the rest of the buffers in 'dst'. */
+ for (; i < *dst_count; i++) {
+ pipe_resource_reference(&dst[i].buffer, NULL);
+ }
+
+ /* Update the size of 'dst' and copy over the other members
+ * of pipe_vertex_buffer. */
+ *dst_count = src_count;
+ memcpy(dst, src, src_count * sizeof(struct pipe_vertex_buffer));
+}
+