nux-1.14.0
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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 #include "GLResource.h" 00024 #include "GpuDevice.h" 00025 00026 #include "GLDeviceObjects.h" 00027 #include "IOpenGLQuery.h" 00028 00029 namespace nux 00030 { 00031 00032 NUX_IMPLEMENT_OBJECT_TYPE (IOpenGLQuery); 00033 00034 t_u32 IOpenGLQuery::_CurrentlyActiveQuery = 0; 00035 00036 IOpenGLQuery::IOpenGLQuery (QUERY_TYPE Type) 00037 : IOpenGLResource (RTQUERY) 00038 , _Type (Type) 00039 , _QueryStarted (false) 00040 { 00041 CHECKGL ( glGenQueriesARB (1, &_OpenGLID) ) ; 00042 } 00043 00044 // The return type identifies the query state (see Queries). 00045 // The method returns 1 (S_OK) if the query data is available and 0 (S_FALSE) if it is not. 00046 // These are considered successful return values. 00047 int IOpenGLQuery::GetData ( 00048 int *pData, 00049 t_u32 Size, 00050 t_u32 GetDataFlags 00051 ) 00052 { 00053 unsigned int ResultReady = 0; 00054 glGetQueryObjectuivARB (_OpenGLID, GL_QUERY_RESULT_AVAILABLE_ARB, &ResultReady); 00055 CHECKGL_MSG ( glGetQueryObjectuivARB ); 00056 00057 if (ResultReady) 00058 { 00059 glGetQueryObjectuivARB (_OpenGLID, GL_QUERY_RESULT_ARB, (GLuint *) pData); 00060 CHECKGL_MSG ( glGetQueryObjectuivARB ); 00061 return 1; 00062 } 00063 else 00064 { 00065 return 0; 00066 } 00067 } 00068 00069 t_u32 IOpenGLQuery::GetDataSize() 00070 { 00071 return 0; 00072 } 00073 00074 void IOpenGLQuery::GetDevice (GpuDevice **ppDevice) 00075 { 00076 // Do not call this function. 00077 *ppDevice = NULL; 00078 } 00079 00080 QUERY_TYPE IOpenGLQuery::GetType() 00081 { 00082 return _Type; 00083 } 00084 00085 void IOpenGLQuery::Issue ( 00086 t_u32 IssueFlags 00087 ) 00088 { 00089 if (IssueFlags == (t_u32) ISSUE_BEGIN) 00090 { 00091 nuxAssert (_CurrentlyActiveQuery == 0); 00092 00093 if (_QueryStarted == true) 00094 { 00095 nuxError (TEXT ("The Query as already been activated") ); 00096 } 00097 else 00098 { 00099 _QueryStarted = true; 00100 CHECKGL ( glBeginQueryARB (GL_SAMPLES_PASSED_ARB, _OpenGLID) ); 00101 _CurrentlyActiveQuery = _OpenGLID; 00102 } 00103 } 00104 else if (IssueFlags == (t_u32) ISSUE_END) 00105 { 00106 nuxAssert (_CurrentlyActiveQuery == _OpenGLID); 00107 00108 if (_QueryStarted == false) 00109 { 00110 nuxError (TEXT ("The Query as already been stoped") ); 00111 } 00112 else 00113 { 00114 _QueryStarted = false; 00115 CHECKGL ( glEndQueryARB (GL_SAMPLES_PASSED_ARB) ); 00116 _CurrentlyActiveQuery = 0; 00117 } 00118 } 00119 } 00120 00121 // Return True is the result is available. That is glGetQueryObjectuivARB won't block 00122 // if called with GL_QUERY_RESULT_ARB. 00123 bool IOpenGLQuery::IsResultAvailable() 00124 { 00125 unsigned int ResultReady = 0; 00126 glGetQueryObjectuivARB (_OpenGLID, GL_QUERY_RESULT_AVAILABLE_ARB, &ResultReady); 00127 CHECKGL_MSG ( glGetQueryObjectuivARB ); 00128 00129 return ResultReady != 0; 00130 } 00131 // Return the result of the query. Make sure IsResultAvailable returned TRUE before calling this function. 00132 // If you fail to do that, GetResult will block before returning. 00133 unsigned int IOpenGLQuery::GetResult() 00134 { 00135 unsigned int SamplesPassed = 0; 00136 glGetQueryObjectuivARB (_OpenGLID, GL_QUERY_RESULT_ARB, &SamplesPassed); 00137 CHECKGL_MSG ( glGetQueryObjectuivARB ); 00138 00139 return SamplesPassed; 00140 } 00141 00142 }