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10<h1>Ogre::GLHardwareOcclusionQuery Class Reference</h1>This is a class that is the base class of the query class for hardware occlusion. 
11<a href="#_details">More...</a>
12<p>
13<code>#include &lt;<a class="el" href="OgreGLHardwareOcclusionQuery_8h-source.html">OgreGLHardwareOcclusionQuery.h</a>&gt;</code>
14<p>
15<p>Inheritance diagram for Ogre::GLHardwareOcclusionQuery:
16<p><center><img src="classOgre_1_1GLHardwareOcclusionQuery.png" usemap="#Ogre::GLHardwareOcclusionQuery_map" border="0" alt=""></center>
17<map name="Ogre::GLHardwareOcclusionQuery_map">
18<area href="classOgre_1_1HardwareOcclusionQuery.html" alt="Ogre::HardwareOcclusionQuery" shape="rect" coords="0,0,212,24">
19</map>
20<a href="classOgre_1_1GLHardwareOcclusionQuery-members.html">List of all members.</a><table border=0 cellpadding=0 cellspacing=0>
21<tr><td></td></tr>
22<tr><td colspan=2><br><h2>Public Member Functions</h2></td></tr>
23<tr><td class="memItemLeft" nowrap align=right valign=top>&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html#Ogre_1_1GLHardwareOcclusionQuerya0">GLHardwareOcclusionQuery</a> ()</td></tr>
24
25<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Default object constructor.  <a href="#Ogre_1_1GLHardwareOcclusionQuerya0"></a><br><br></td></tr>
26<tr><td class="memItemLeft" nowrap align=right valign=top>&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html#Ogre_1_1GLHardwareOcclusionQuerya1">~GLHardwareOcclusionQuery</a> ()</td></tr>
27
28<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Object destructor.  <a href="#Ogre_1_1GLHardwareOcclusionQuerya1"></a><br><br></td></tr>
29<tr><td class="memItemLeft" nowrap align=right valign=top>void&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html#Ogre_1_1GLHardwareOcclusionQuerya2">beginOcclusionQuery</a> ()</td></tr>
30
31<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Starts the hardware occlusion query  Simple usage: Create one or more OcclusionQuery object one per outstanding query or one per tested object OcclusionQuery* m_pOcclusionQuery; createOcclusionQuery( &amp;m_pOcclusionQuery ); In the rendering loop: Draw all occluders m_pOcclusionQuery-&gt;startOcclusionQuery(); Draw the polygons to be tested m_pOcclusionQuery-&gt;<a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html#Ogre_1_1GLHardwareOcclusionQuerya3">endOcclusionQuery()</a>;.  <a href="#Ogre_1_1GLHardwareOcclusionQuerya2"></a><br><br></td></tr>
32<tr><td class="memItemLeft" nowrap align=right valign=top>void&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html#Ogre_1_1GLHardwareOcclusionQuerya3">endOcclusionQuery</a> ()</td></tr>
33
34<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Ends the hardware occlusion test.  <a href="#Ogre_1_1GLHardwareOcclusionQuerya3"></a><br><br></td></tr>
35<tr><td class="memItemLeft" nowrap align=right valign=top>bool&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html#Ogre_1_1GLHardwareOcclusionQuerya4">pullOcclusionQuery</a> (unsigned int *NumOfFragments, const <a class="el" href="namespaceOgre.html#a138">HW_OCCLUSIONQUERY</a> flag)</td></tr>
36
37<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Pulls the hardware occlusion query too see if there is a result.  <a href="#Ogre_1_1GLHardwareOcclusionQuerya4"></a><br><br></td></tr>
38<tr><td class="memItemLeft" nowrap align=right valign=top>unsigned int&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html#Ogre_1_1GLHardwareOcclusionQuerya5">getLastQuerysPixelcount</a> ()</td></tr>
39
40<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Let's you get the last pixel count with out doing the hardware occlusion test.  <a href="#Ogre_1_1GLHardwareOcclusionQuerya5"></a><br><br></td></tr>
41<tr><td class="memItemLeft" nowrap align=right valign=top>bool&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html#Ogre_1_1GLHardwareOcclusionQuerya6">isStillOutstanding</a> (void)</td></tr>
42
43<tr><td class="memItemLeft" nowrap align=right valign=top>void&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html#Ogre_1_1GLHardwareOcclusionQuerya7">setSkipRate</a> (int skip)</td></tr>
44
45<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Remarks This function allows you to set how often the hardware occlusion really sent to the driver if you set it to 0 every hardware occlusion test is actually made.  <a href="#Ogre_1_1GLHardwareOcclusionQuerya7"></a><br><br></td></tr>
46<tr><td class="memItemLeft" nowrap align=right valign=top>int&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html#Ogre_1_1GLHardwareOcclusionQuerya8">getSkipRate</a> ()</td></tr>
47
48<tr><td class="memItemLeft" nowrap align=right valign=top>virtual bool&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1HardwareOcclusionQuery.html#Ogre_1_1HardwareOcclusionQuerya6">HardwareOcclusionQuery::isStillOutstanding</a> (void)=0</td></tr>
49
50<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Lets you know when query is done, or still be processed by the Hardware.  <a href="#Ogre_1_1HardwareOcclusionQuerya6"></a><br><br></td></tr>
51<tr><td colspan=2><br><h2>Protected Attributes</h2></td></tr>
52<tr><td class="memItemLeft" nowrap align=right valign=top>unsigned int&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html#Ogre_1_1GLHardwareOcclusionQueryp0">mPixelCount</a></td></tr>
53
54<tr><td class="memItemLeft" nowrap align=right valign=top>GLuint&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html#Ogre_1_1GLHardwareOcclusionQueryp1">mQueryID</a></td></tr>
55
56<tr><td class="memItemLeft" nowrap align=right valign=top>bool&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html#Ogre_1_1GLHardwareOcclusionQueryp2">m_bOcclusionQuery</a></td></tr>
57
58<tr><td class="memItemLeft" nowrap align=right valign=top>int&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html#Ogre_1_1GLHardwareOcclusionQueryp3">mSkipCounter</a></td></tr>
59
60<tr><td class="memItemLeft" nowrap align=right valign=top>int&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html#Ogre_1_1GLHardwareOcclusionQueryp4">mSkipInterval</a></td></tr>
61
62<tr><td class="memItemLeft" nowrap align=right valign=top>bool&nbsp;</td><td class="memItemRight" valign=bottom><a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html#Ogre_1_1GLHardwareOcclusionQueryp5">mHasOcclusionSupport</a></td></tr>
63
64</table>
65<hr><a name="_details"></a><h2>Detailed Description</h2>
66This is a class that is the base class of the query class for hardware occlusion.
67<p>
68<dl compact><dt><b>Author:</b></dt><dd>Lee Sandberg email: <a href="mailto:lee@abcmedia.se">lee@abcmedia.se</a> Updated on 4/8/2005 by Tuan Kuranes email: <a href="mailto:tuan.kuranes@free.fr">tuan.kuranes@free.fr</a> </dd></dl>
69
70<p>
71
72<p>
73Definition at line <a class="el" href="OgreGLHardwareOcclusionQuery_8h-source.html#l00069">69</a> of file <a class="el" href="OgreGLHardwareOcclusionQuery_8h-source.html">OgreGLHardwareOcclusionQuery.h</a>.<hr><h2>Constructor &amp; Destructor Documentation</h2>
74<a class="anchor" name="Ogre_1_1GLHardwareOcclusionQuerya0" doxytag="Ogre::GLHardwareOcclusionQuery::GLHardwareOcclusionQuery" ></a><p>
75<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
76  <tr>
77    <td class="mdRow">
78      <table cellpadding="0" cellspacing="0" border="0">
79        <tr>
80          <td class="md" nowrap valign="top"> Ogre::GLHardwareOcclusionQuery::GLHardwareOcclusionQuery </td>
81          <td class="md" valign="top">(&nbsp;</td>
82          <td class="mdname1" valign="top" nowrap>          </td>
83          <td class="md" valign="top">&nbsp;)&nbsp;</td>
84          <td class="md" nowrap></td>
85        </tr>
86
87      </table>
88    </td>
89  </tr>
90</table>
91<table cellspacing=5 cellpadding=0 border=0>
92  <tr>
93    <td>
94      &nbsp;
95    </td>
96    <td>
97
98<p>
99Default object constructor.
100<p>
101    </td>
102  </tr>
103</table>
104<a class="anchor" name="Ogre_1_1GLHardwareOcclusionQuerya1" doxytag="Ogre::GLHardwareOcclusionQuery::~GLHardwareOcclusionQuery" ></a><p>
105<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
106  <tr>
107    <td class="mdRow">
108      <table cellpadding="0" cellspacing="0" border="0">
109        <tr>
110          <td class="md" nowrap valign="top"> Ogre::GLHardwareOcclusionQuery::~<a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html">GLHardwareOcclusionQuery</a> </td>
111          <td class="md" valign="top">(&nbsp;</td>
112          <td class="mdname1" valign="top" nowrap>          </td>
113          <td class="md" valign="top">&nbsp;)&nbsp;</td>
114          <td class="md" nowrap></td>
115        </tr>
116
117      </table>
118    </td>
119  </tr>
120</table>
121<table cellspacing=5 cellpadding=0 border=0>
122  <tr>
123    <td>
124      &nbsp;
125    </td>
126    <td>
127
128<p>
129Object destructor.
130<p>
131    </td>
132  </tr>
133</table>
134<hr><h2>Member Function Documentation</h2>
135<a class="anchor" name="Ogre_1_1GLHardwareOcclusionQuerya2" doxytag="Ogre::GLHardwareOcclusionQuery::beginOcclusionQuery" ></a><p>
136<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
137  <tr>
138    <td class="mdRow">
139      <table cellpadding="0" cellspacing="0" border="0">
140        <tr>
141          <td class="md" nowrap valign="top"> void Ogre::GLHardwareOcclusionQuery::beginOcclusionQuery </td>
142          <td class="md" valign="top">(&nbsp;</td>
143          <td class="mdname1" valign="top" nowrap>          </td>
144          <td class="md" valign="top">&nbsp;)&nbsp;</td>
145          <td class="md" nowrap><code> [virtual]</code></td>
146        </tr>
147
148      </table>
149    </td>
150  </tr>
151</table>
152<table cellspacing=5 cellpadding=0 border=0>
153  <tr>
154    <td>
155      &nbsp;
156    </td>
157    <td>
158
159<p>
160Starts the hardware occlusion query  Simple usage: Create one or more OcclusionQuery object one per outstanding query or one per tested object OcclusionQuery* m_pOcclusionQuery; createOcclusionQuery( &amp;m_pOcclusionQuery ); In the rendering loop: Draw all occluders m_pOcclusionQuery-&gt;startOcclusionQuery(); Draw the polygons to be tested m_pOcclusionQuery-&gt;<a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html#Ogre_1_1GLHardwareOcclusionQuerya3">endOcclusionQuery()</a>;.
161<p>
162Results must be pulled using: UINT m_uintNumberOfPixelsVisable; pullOcclusionQuery( &amp;m_dwNumberOfPixelsVisable ); You may not get the result directly after the first pass or frame. Objects not visible must be tested every frame, visible objects may be tested less frequently.
163<p>
164Implements <a class="el" href="classOgre_1_1HardwareOcclusionQuery.html#Ogre_1_1HardwareOcclusionQuerya2">Ogre::HardwareOcclusionQuery</a>.    </td>
165  </tr>
166</table>
167<a class="anchor" name="Ogre_1_1GLHardwareOcclusionQuerya3" doxytag="Ogre::GLHardwareOcclusionQuery::endOcclusionQuery" ></a><p>
168<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
169  <tr>
170    <td class="mdRow">
171      <table cellpadding="0" cellspacing="0" border="0">
172        <tr>
173          <td class="md" nowrap valign="top"> void Ogre::GLHardwareOcclusionQuery::endOcclusionQuery </td>
174          <td class="md" valign="top">(&nbsp;</td>
175          <td class="mdname1" valign="top" nowrap>          </td>
176          <td class="md" valign="top">&nbsp;)&nbsp;</td>
177          <td class="md" nowrap><code> [virtual]</code></td>
178        </tr>
179
180      </table>
181    </td>
182  </tr>
183</table>
184<table cellspacing=5 cellpadding=0 border=0>
185  <tr>
186    <td>
187      &nbsp;
188    </td>
189    <td>
190
191<p>
192Ends the hardware occlusion test.
193<p>
194
195<p>
196Implements <a class="el" href="classOgre_1_1HardwareOcclusionQuery.html#Ogre_1_1HardwareOcclusionQuerya3">Ogre::HardwareOcclusionQuery</a>.    </td>
197  </tr>
198</table>
199<a class="anchor" name="Ogre_1_1GLHardwareOcclusionQuerya5" doxytag="Ogre::GLHardwareOcclusionQuery::getLastQuerysPixelcount" ></a><p>
200<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
201  <tr>
202    <td class="mdRow">
203      <table cellpadding="0" cellspacing="0" border="0">
204        <tr>
205          <td class="md" nowrap valign="top"> unsigned int Ogre::GLHardwareOcclusionQuery::getLastQuerysPixelcount </td>
206          <td class="md" valign="top">(&nbsp;</td>
207          <td class="mdname1" valign="top" nowrap>          </td>
208          <td class="md" valign="top">&nbsp;)&nbsp;</td>
209          <td class="md" nowrap><code> [virtual]</code></td>
210        </tr>
211
212      </table>
213    </td>
214  </tr>
215</table>
216<table cellspacing=5 cellpadding=0 border=0>
217  <tr>
218    <td>
219      &nbsp;
220    </td>
221    <td>
222
223<p>
224Let's you get the last pixel count with out doing the hardware occlusion test.
225<p>
226<dl compact><dt><b>Returns:</b></dt><dd>The last fragment count from the last test. Remarks This function won't give you new values, just the old value.</dd></dl>
227
228<p>
229Implements <a class="el" href="classOgre_1_1HardwareOcclusionQuery.html#Ogre_1_1HardwareOcclusionQuerya5">Ogre::HardwareOcclusionQuery</a>.
230<p>
231Definition at line <a class="el" href="OgreGLHardwareOcclusionQuery_8h-source.html#l00092">92</a> of file <a class="el" href="OgreGLHardwareOcclusionQuery_8h-source.html">OgreGLHardwareOcclusionQuery.h</a>.    </td>
232  </tr>
233</table>
234<a class="anchor" name="Ogre_1_1GLHardwareOcclusionQuerya8" doxytag="Ogre::GLHardwareOcclusionQuery::getSkipRate" ></a><p>
235<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
236  <tr>
237    <td class="mdRow">
238      <table cellpadding="0" cellspacing="0" border="0">
239        <tr>
240          <td class="md" nowrap valign="top"> int Ogre::GLHardwareOcclusionQuery::getSkipRate </td>
241          <td class="md" valign="top">(&nbsp;</td>
242          <td class="mdname1" valign="top" nowrap>          </td>
243          <td class="md" valign="top">&nbsp;)&nbsp;</td>
244          <td class="md" nowrap><code> [virtual]</code></td>
245        </tr>
246
247      </table>
248    </td>
249  </tr>
250</table>
251<table cellspacing=5 cellpadding=0 border=0>
252  <tr>
253    <td>
254      &nbsp;
255    </td>
256    <td>
257
258<p>
259
260<p>
261Implements <a class="el" href="classOgre_1_1HardwareOcclusionQuery.html#Ogre_1_1HardwareOcclusionQuerya8">Ogre::HardwareOcclusionQuery</a>.
262<p>
263Definition at line <a class="el" href="OgreGLHardwareOcclusionQuery_8h-source.html#l00111">111</a> of file <a class="el" href="OgreGLHardwareOcclusionQuery_8h-source.html">OgreGLHardwareOcclusionQuery.h</a>.    </td>
264  </tr>
265</table>
266<a class="anchor" name="Ogre_1_1HardwareOcclusionQuerya6" doxytag="Ogre::GLHardwareOcclusionQuery::HardwareOcclusionQuery::isStillOutstanding" ></a><p>
267<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
268  <tr>
269    <td class="mdRow">
270      <table cellpadding="0" cellspacing="0" border="0">
271        <tr>
272          <td class="md" nowrap valign="top"> virtual bool Ogre::HardwareOcclusionQuery::HardwareOcclusionQuery::isStillOutstanding </td>
273          <td class="md" valign="top">(&nbsp;</td>
274          <td class="md" nowrap valign="top">void&nbsp;</td>
275          <td class="mdname1" valign="top" nowrap>          </td>
276          <td class="md" valign="top">&nbsp;)&nbsp;</td>
277          <td class="md" nowrap><code> [pure virtual, inherited]</code></td>
278        </tr>
279
280      </table>
281    </td>
282  </tr>
283</table>
284<table cellspacing=5 cellpadding=0 border=0>
285  <tr>
286    <td>
287      &nbsp;
288    </td>
289    <td>
290
291<p>
292Lets you know when query is done, or still be processed by the Hardware.
293<p>
294<dl compact><dt><b>Returns:</b></dt><dd>true if query isn't finished.</dd></dl>
295    </td>
296  </tr>
297</table>
298<a class="anchor" name="Ogre_1_1GLHardwareOcclusionQuerya6" doxytag="Ogre::GLHardwareOcclusionQuery::isStillOutstanding" ></a><p>
299<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
300  <tr>
301    <td class="mdRow">
302      <table cellpadding="0" cellspacing="0" border="0">
303        <tr>
304          <td class="md" nowrap valign="top"> bool Ogre::GLHardwareOcclusionQuery::isStillOutstanding </td>
305          <td class="md" valign="top">(&nbsp;</td>
306          <td class="md" nowrap valign="top">void&nbsp;</td>
307          <td class="mdname1" valign="top" nowrap>          </td>
308          <td class="md" valign="top">&nbsp;)&nbsp;</td>
309          <td class="md" nowrap></td>
310        </tr>
311
312      </table>
313    </td>
314  </tr>
315</table>
316<table cellspacing=5 cellpadding=0 border=0>
317  <tr>
318    <td>
319      &nbsp;
320    </td>
321    <td>
322
323<p>
324    </td>
325  </tr>
326</table>
327<a class="anchor" name="Ogre_1_1GLHardwareOcclusionQuerya4" doxytag="Ogre::GLHardwareOcclusionQuery::pullOcclusionQuery" ></a><p>
328<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
329  <tr>
330    <td class="mdRow">
331      <table cellpadding="0" cellspacing="0" border="0">
332        <tr>
333          <td class="md" nowrap valign="top"> bool Ogre::GLHardwareOcclusionQuery::pullOcclusionQuery </td>
334          <td class="md" valign="top">(&nbsp;</td>
335          <td class="md" nowrap valign="top">unsigned int *&nbsp;</td>
336          <td class="mdname" nowrap> <em>NumOfFragments</em>, </td>
337        </tr>
338        <tr>
339          <td class="md" nowrap align="right"></td>
340          <td></td>
341          <td class="md" nowrap>const <a class="el" href="namespaceOgre.html#a138">HW_OCCLUSIONQUERY</a>&nbsp;</td>
342          <td class="mdname" nowrap> <em>flag</em></td>
343        </tr>
344        <tr>
345          <td></td>
346          <td class="md">)&nbsp;</td>
347          <td class="md" colspan="2"><code> [virtual]</code></td>
348        </tr>
349
350      </table>
351    </td>
352  </tr>
353</table>
354<table cellspacing=5 cellpadding=0 border=0>
355  <tr>
356    <td>
357      &nbsp;
358    </td>
359    <td>
360
361<p>
362Pulls the hardware occlusion query too see if there is a result.
363<p>
364<dl compact><dt><b>Return values:</b></dt><dd>
365  <table border="0" cellspacing="2" cellpadding="0">
366    <tr><td valign=top><em>NumOfFragments</em>&nbsp;</td><td>will get the resulting number of fragments. </td></tr>
367  </table>
368</dl>
369<dl compact><dt><b>Returns:</b></dt><dd>True if success or false if not.  In DX9 mode specifying OCCLUSIONQUERY_FLUSH as the flag, will case the driver to flush whatever API calls are batched. In OpenGL mode it makes no difference if you specify OCCLUSIONQUERY_FLUSH or OCCLUSIONQUERY_NOFLUSH. </dd></dl>
370
371<p>
372Implements <a class="el" href="classOgre_1_1HardwareOcclusionQuery.html#Ogre_1_1HardwareOcclusionQuerya4">Ogre::HardwareOcclusionQuery</a>.    </td>
373  </tr>
374</table>
375<a class="anchor" name="Ogre_1_1GLHardwareOcclusionQuerya7" doxytag="Ogre::GLHardwareOcclusionQuery::setSkipRate" ></a><p>
376<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
377  <tr>
378    <td class="mdRow">
379      <table cellpadding="0" cellspacing="0" border="0">
380        <tr>
381          <td class="md" nowrap valign="top"> void Ogre::GLHardwareOcclusionQuery::setSkipRate </td>
382          <td class="md" valign="top">(&nbsp;</td>
383          <td class="md" nowrap valign="top">int&nbsp;</td>
384          <td class="mdname1" valign="top" nowrap> <em>skip</em>          </td>
385          <td class="md" valign="top">&nbsp;)&nbsp;</td>
386          <td class="md" nowrap><code> [virtual]</code></td>
387        </tr>
388
389      </table>
390    </td>
391  </tr>
392</table>
393<table cellspacing=5 cellpadding=0 border=0>
394  <tr>
395    <td>
396      &nbsp;
397    </td>
398    <td>
399
400<p>
401Remarks This function allows you to set how often the hardware occlusion really sent to the driver if you set it to 0 every hardware occlusion test is actually made.
402<p>
403If you set it to 2 only 50% of your queries are sent. for all visible objects. 3 will result in 33% of all queries to actually be sent and so on. New and none visible objects will be tested all the time. This functionality is here because this class can keep track on visible and none visible objects for you. Once you you set the SkipRate for any hardware occlusion instance it effects all others.
404<p>
405Implements <a class="el" href="classOgre_1_1HardwareOcclusionQuery.html#Ogre_1_1HardwareOcclusionQuerya7">Ogre::HardwareOcclusionQuery</a>.
406<p>
407Definition at line <a class="el" href="OgreGLHardwareOcclusionQuery_8h-source.html#l00110">110</a> of file <a class="el" href="OgreGLHardwareOcclusionQuery_8h-source.html">OgreGLHardwareOcclusionQuery.h</a>.    </td>
408  </tr>
409</table>
410<hr><h2>Member Data Documentation</h2>
411<a class="anchor" name="Ogre_1_1GLHardwareOcclusionQueryp2" doxytag="Ogre::GLHardwareOcclusionQuery::m_bOcclusionQuery" ></a><p>
412<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
413  <tr>
414    <td class="mdRow">
415      <table cellpadding="0" cellspacing="0" border="0">
416        <tr>
417          <td class="md" nowrap valign="top"> bool <a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html#Ogre_1_1GLHardwareOcclusionQueryp2">Ogre::GLHardwareOcclusionQuery::m_bOcclusionQuery</a><code> [protected]</code>
418      </table>
419    </td>
420  </tr>
421</table>
422<table cellspacing=5 cellpadding=0 border=0>
423  <tr>
424    <td>
425      &nbsp;
426    </td>
427    <td>
428
429<p>
430
431<p>
432Definition at line <a class="el" href="OgreGLHardwareOcclusionQuery_8h-source.html#l00121">121</a> of file <a class="el" href="OgreGLHardwareOcclusionQuery_8h-source.html">OgreGLHardwareOcclusionQuery.h</a>.    </td>
433  </tr>
434</table>
435<a class="anchor" name="Ogre_1_1GLHardwareOcclusionQueryp5" doxytag="Ogre::GLHardwareOcclusionQuery::mHasOcclusionSupport" ></a><p>
436<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
437  <tr>
438    <td class="mdRow">
439      <table cellpadding="0" cellspacing="0" border="0">
440        <tr>
441          <td class="md" nowrap valign="top"> bool <a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html#Ogre_1_1GLHardwareOcclusionQueryp5">Ogre::GLHardwareOcclusionQuery::mHasOcclusionSupport</a><code> [protected]</code>
442      </table>
443    </td>
444  </tr>
445</table>
446<table cellspacing=5 cellpadding=0 border=0>
447  <tr>
448    <td>
449      &nbsp;
450    </td>
451    <td>
452
453<p>
454
455<p>
456Definition at line <a class="el" href="OgreGLHardwareOcclusionQuery_8h-source.html#l00124">124</a> of file <a class="el" href="OgreGLHardwareOcclusionQuery_8h-source.html">OgreGLHardwareOcclusionQuery.h</a>.    </td>
457  </tr>
458</table>
459<a class="anchor" name="Ogre_1_1GLHardwareOcclusionQueryp0" doxytag="Ogre::GLHardwareOcclusionQuery::mPixelCount" ></a><p>
460<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
461  <tr>
462    <td class="mdRow">
463      <table cellpadding="0" cellspacing="0" border="0">
464        <tr>
465          <td class="md" nowrap valign="top"> unsigned int <a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html#Ogre_1_1GLHardwareOcclusionQueryp0">Ogre::GLHardwareOcclusionQuery::mPixelCount</a><code> [protected]</code>
466      </table>
467    </td>
468  </tr>
469</table>
470<table cellspacing=5 cellpadding=0 border=0>
471  <tr>
472    <td>
473      &nbsp;
474    </td>
475    <td>
476
477<p>
478
479<p>
480Definition at line <a class="el" href="OgreGLHardwareOcclusionQuery_8h-source.html#l00119">119</a> of file <a class="el" href="OgreGLHardwareOcclusionQuery_8h-source.html">OgreGLHardwareOcclusionQuery.h</a>.    </td>
481  </tr>
482</table>
483<a class="anchor" name="Ogre_1_1GLHardwareOcclusionQueryp1" doxytag="Ogre::GLHardwareOcclusionQuery::mQueryID" ></a><p>
484<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
485  <tr>
486    <td class="mdRow">
487      <table cellpadding="0" cellspacing="0" border="0">
488        <tr>
489          <td class="md" nowrap valign="top"> GLuint <a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html#Ogre_1_1GLHardwareOcclusionQueryp1">Ogre::GLHardwareOcclusionQuery::mQueryID</a><code> [protected]</code>
490      </table>
491    </td>
492  </tr>
493</table>
494<table cellspacing=5 cellpadding=0 border=0>
495  <tr>
496    <td>
497      &nbsp;
498    </td>
499    <td>
500
501<p>
502
503<p>
504Definition at line <a class="el" href="OgreGLHardwareOcclusionQuery_8h-source.html#l00120">120</a> of file <a class="el" href="OgreGLHardwareOcclusionQuery_8h-source.html">OgreGLHardwareOcclusionQuery.h</a>.    </td>
505  </tr>
506</table>
507<a class="anchor" name="Ogre_1_1GLHardwareOcclusionQueryp3" doxytag="Ogre::GLHardwareOcclusionQuery::mSkipCounter" ></a><p>
508<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
509  <tr>
510    <td class="mdRow">
511      <table cellpadding="0" cellspacing="0" border="0">
512        <tr>
513          <td class="md" nowrap valign="top"> int <a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html#Ogre_1_1GLHardwareOcclusionQueryp3">Ogre::GLHardwareOcclusionQuery::mSkipCounter</a><code> [protected]</code>
514      </table>
515    </td>
516  </tr>
517</table>
518<table cellspacing=5 cellpadding=0 border=0>
519  <tr>
520    <td>
521      &nbsp;
522    </td>
523    <td>
524
525<p>
526
527<p>
528Definition at line <a class="el" href="OgreGLHardwareOcclusionQuery_8h-source.html#l00122">122</a> of file <a class="el" href="OgreGLHardwareOcclusionQuery_8h-source.html">OgreGLHardwareOcclusionQuery.h</a>.    </td>
529  </tr>
530</table>
531<a class="anchor" name="Ogre_1_1GLHardwareOcclusionQueryp4" doxytag="Ogre::GLHardwareOcclusionQuery::mSkipInterval" ></a><p>
532<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
533  <tr>
534    <td class="mdRow">
535      <table cellpadding="0" cellspacing="0" border="0">
536        <tr>
537          <td class="md" nowrap valign="top"> int <a class="el" href="classOgre_1_1GLHardwareOcclusionQuery.html#Ogre_1_1GLHardwareOcclusionQueryp4">Ogre::GLHardwareOcclusionQuery::mSkipInterval</a><code> [protected]</code>
538      </table>
539    </td>
540  </tr>
541</table>
542<table cellspacing=5 cellpadding=0 border=0>
543  <tr>
544    <td>
545      &nbsp;
546    </td>
547    <td>
548
549<p>
550
551<p>
552Definition at line <a class="el" href="OgreGLHardwareOcclusionQuery_8h-source.html#l00123">123</a> of file <a class="el" href="OgreGLHardwareOcclusionQuery_8h-source.html">OgreGLHardwareOcclusionQuery.h</a>.    </td>
553  </tr>
554</table>
555<hr>The documentation for this class was generated from the following file:<ul>
556<li><a class="el" href="OgreGLHardwareOcclusionQuery_8h-source.html">OgreGLHardwareOcclusionQuery.h</a></ul>
557<hr>
558<p>
559Copyright &copy; 2000-2005 by The OGRE Team<br />
560<!--Creative Commons License--><a rel="license" href="http://creativecommons.org/licenses/by-sa/2.5/"><img alt="Creative Commons License" border="0" src="http://creativecommons.org/images/public/somerights20.png"/></a><br/>
561This work is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-sa/2.5/">Creative Commons Attribution-ShareAlike 2.5 License</a>.<br/>
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568
569Last modified Sun Feb 12 13:10:12 2006
570</p>
571</body>
572</html>
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