1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>intel_fb_obj_invalidate</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Linux DRM Developer's Guide"><link rel="up" href="ch04s02.html#idp1127883116" title="Frontbuffer Tracking"><link rel="prev" href="API-intel-mark-fb-busy.html" title="intel_mark_fb_busy"><link rel="next" href="API-intel-frontbuffer-flush.html" title="intel_frontbuffer_flush"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">intel_fb_obj_invalidate</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-intel-mark-fb-busy.html">Prev</a>&#160;</td><th width="60%" align="center">Frontbuffer Tracking</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-intel-frontbuffer-flush.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-intel-fb-obj-invalidate"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>intel_fb_obj_invalidate &#8212; 
2     invalidate frontbuffer object
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void <b class="fsfunc">intel_fb_obj_invalidate </b>(</code></td><td>struct drm_i915_gem_object * <var class="pdparam">obj</var>, </td></tr><tr><td>&#160;</td><td>struct intel_engine_cs * <var class="pdparam">ring</var>, </td></tr><tr><td>&#160;</td><td>enum fb_op_origin <var class="pdparam">origin</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1127902620"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>obj</code></em></span></dt><dd><p>
4     GEM object to invalidate
5    </p></dd><dt><span class="term"><em class="parameter"><code>ring</code></em></span></dt><dd><p>
6     set for asynchronous rendering
7    </p></dd><dt><span class="term"><em class="parameter"><code>origin</code></em></span></dt><dd><p>
8     which operation caused the invalidation
9    </p></dd></dl></div></div><div class="refsect1"><a name="idp1127906292"></a><h2>Description</h2><p>
10   This function gets called every time rendering on the given object starts and
11   frontbuffer caching (fbc, low refresh rate for DRRS, panel self refresh) must
12   be invalidated. If <em class="parameter"><code>ring</code></em> is non-NULL any subsequent invalidation will be delayed
13   until the rendering completes or a flip on this frontbuffer plane is
14   scheduled.
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