blob: ecfae00cf4539f8d9d61a2d591445bb08753b96a [file] [log] [blame]
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "">
<html xmlns="">
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.20"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>Vulkan Memory Allocator: Record and replay</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/searchdata.js"></script>
<script type="text/javascript" src="search/search.js"></script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tr style="height: 56px;">
<td id="projectalign" style="padding-left: 0.5em;">
<div id="projectname">Vulkan Memory Allocator
<!-- end header part -->
<!-- Generated by Doxygen 1.8.20 -->
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
var searchBox = new SearchBox("searchBox", "search",false,'Search');
/* @license-end */
<script type="text/javascript" src="menudata.js"></script>
<script type="text/javascript" src="menu.js"></script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
$(function() {
$(document).ready(function() { init_search(); });
/* @license-end */</script>
<div id="main-nav"></div>
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0"
name="MSearchResults" id="MSearchResults">
<div id="nav-path" class="navpath">
<li class="navelem"><a class="el" href="index.html">Vulkan Memory Allocator</a></li> </ul>
</div><!-- top -->
<div class="PageDoc"><div class="header">
<div class="headertitle">
<div class="title">Record and replay </div> </div>
<div class="contents">
<div class="textblock"><h1><a class="anchor" id="record_and_replay_introduction"></a>
<p>While using the library, sequence of calls to its functions together with their parameters can be recorded to a file and later replayed using standalone player application. It can be useful to:</p>
<li>Test correctness - check if same sequence of calls will not cause crash or failures on a target platform.</li>
<li>Gather statistics - see number of allocations, peak memory usage, number of calls etc.</li>
<li>Benchmark performance - see how much time it takes to replay the whole sequence.</li>
<h1><a class="anchor" id="record_and_replay_usage"></a>
<p>Recording functionality is disabled by default. To enable it, define following macro before every include of this library:</p>
<div class="fragment"><div class="line"><span class="preprocessor">#define VMA_RECORDING_ENABLED 1</span></div>
</div><!-- fragment --><p><b>To record sequence of calls to a file:</b> Fill in <a class="el" href="struct_vma_allocator_create_info.html#ace2aa4877b16a42b0b7673d4e26000ee" title="Parameters for recording of VMA calls. Can be null.">VmaAllocatorCreateInfo::pRecordSettings</a> member while creating <a class="el" href="struct_vma_allocator.html" title="Represents main object of this library initialized.">VmaAllocator</a> object. File is opened and written during whole lifetime of the allocator.</p>
<p><b>To replay file:</b> Use VmaReplay - standalone command-line program. Precompiled binary can be found in "bin" directory. Its source can be found in "src/VmaReplay" directory. Its project is generated by Premake. Command line syntax is printed when the program is launched without parameters. Basic usage: </p><pre class="fragment">VmaReplay.exe MyRecording.csv
</pre><p><b>Documentation of file format</b> can be found in file: "docs/Recording file". It's a human-readable, text file in CSV format (Comma Separated Values).</p>
<h1><a class="anchor" id="record_and_replay_additional_considerations"></a>
Additional considerations</h1>
<li>Replaying file that was recorded on a different GPU (with different parameters like <code>bufferImageGranularity</code>, <code>nonCoherentAtomSize</code>, and especially different set of memory heaps and types) may give different performance and memory usage results, as well as issue some warnings and errors.</li>
<li>Current implementation of recording in VMA, as well as VmaReplay application, is coded and tested only on Windows. Inclusion of recording code is driven by <code>VMA_RECORDING_ENABLED</code> macro. Support for other platforms should be easy to add. Contributions are welcomed. </li>
</div></div><!-- contents -->
</div><!-- PageDoc -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated by&#160;<a href=""><img class="footer" src="doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.8.20