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7<title>UpdateBuffer</title>
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10<h1><CODE><a href="../../../nn/Overview.html">nn</a>::<a href="../../../nn/gx/Overview.html">gx</a>::<a href="../../../nn/gx/CTR/Overview.html">CTR</a>::UpdateBuffer</CODE> Function</h1>
11<h2>Syntax</h2>
12    <div class="section">
13      <pre class="definition">
14void UpdateBuffer(
15     const void * pBuffer,
16     size_t size
17);
18</pre>
19    </div>
20<h2>Parameters</h2>
21    <div class="section">
22      <table class="arguments">
23        <thead>
24          <tr>
25            <td width="15" />
26<th>Name</th>
27<td>Description</td>
28          </tr>
29        </thead>
30        <tr>
31<td>in</td>
32<th>pBuffer</th>
33<td>Pointer to the start of the buffer.</td>
34        </tr>
35        <tr>
36<td>in</td>
37<th>size</th>
38<td>Buffer size.</td>
39        </tr> </table>
40    </div>
41<h2>Return Values</h2>
42    <div class="section">
43None.
44               </div>
45<h2>Description</h2>
46    <div class="section">
47<p>Applies to the graphics processor the updates that have been made to the contents of the vertex buffer and texture buffer in main memory. </p><p>
48When the GPU directly references texture, vertex, and other buffer data that has been expanded, copied, or overwritten into device memory by the CPU, use this to reflect those CPU-side changes in the GPU.
49            </p><p>
50Specifically speaking, internal processing consists of flushing the cache, but Nintendo does not support using this function as a generic means of flushing the cache.
51            </p><p>
52Only use this function to reflect CPU changes to the vertex and texture buffers in the GPU.
53            </p><p>
54This function blocks in order to call system processes. There is a fixed processing overhead for each process call. To improve performance, call this function as infrequently as possible. In other words, try to collect updates into a large batch before calling it, rather than breaking the updates into small batches.
55            </p></div>
56<h2>Revision History</h2>
57    <div class="section">
58      <dl class="history">
59        <dt>2011/11/29</dt>
60<dd>Added note about the overhead of making calls.<br />
61        </dd>
62        <dt>2011/03/23</dt>
63<dd>Revised a part of the description.<br />
64        </dd>
65        <dt>2011/01/17</dt>
66<dd>Enhanced the description.<br />
67        </dd>
68        <dt>2010/10/25</dt>
69<dd>Initial version.<br />
70        </dd>
71      </dl>
72    </div>
73  <hr><p>CONFIDENTIAL</p></body>
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