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nux  3.0.0
IOpenGLQuery.h
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00001 /*
00002  * Copyright 2010 Inalogic® Inc.
00003  *
00004  * This program is free software: you can redistribute it and/or modify it
00005  * under the terms of the GNU Lesser General Public License, as
00006  * published by the  Free Software Foundation; either version 2.1 or 3.0
00007  * of the License.
00008  *
00009  * This program is distributed in the hope that it will be useful, but
00010  * WITHOUT ANY WARRANTY; without even the implied warranties of
00011  * MERCHANTABILITY, SATISFACTORY QUALITY or FITNESS FOR A PARTICULAR
00012  * PURPOSE.  See the applicable version of the GNU Lesser General Public
00013  * License for more details.
00014  *
00015  * You should have received a copy of both the GNU Lesser General Public
00016  * License along with this program. If not, see <http://www.gnu.org/licenses/>
00017  *
00018  * Authored by: Jay Taoko <jaytaoko@inalogic.com>
00019  *
00020  */
00021 
00022 
00023 #ifndef IOPENGLQUERY_H
00024 #define IOPENGLQUERY_H
00025 
00026 namespace nux
00027 {
00028 
00029   class IOpenGLResource;
00030   class IOpenGLQuery: public IOpenGLResource
00031   {
00032     NUX_DECLARE_OBJECT_TYPE(IOpenGLQuery, IOpenGLResource);
00033 
00034   public:
00035     int GetData(
00036       int *pData,
00037       unsigned int Size,
00038       unsigned int GetDataFlags
00039     );
00040     unsigned int GetDataSize();
00041 
00042     void GetDevice(
00043       GpuDevice **ppDevice
00044     );
00045 
00046     QUERY_TYPE GetType();
00047 
00048     void Issue(
00049       unsigned int IssueFlags
00050     );
00051 
00052     // Convenient functions
00053 
00054     // Return True is the result is available. That is glGetQueryObjectuivARB won't block
00055     // if called with GL_QUERY_RESULT_ARB.
00056     bool IsResultAvailable();
00057     // Return the result of the query. Make sure IsResultAvailable returned TRUE before calling this function.
00058     // If you fail to do that, GetResult will block before returning.
00059     unsigned int GetResult();
00060 
00061     IOpenGLQuery(QUERY_TYPE Type);
00062     virtual ~IOpenGLQuery() {};
00063 
00064 
00065   private:
00066     QUERY_TYPE _Type;
00067     bool _QueryStarted;
00068     friend class GpuDevice;
00069     static unsigned int _CurrentlyActiveQuery;
00070   };
00071 
00072 }
00073 
00074 #endif // IOPENGLQUERY_H