Initial commit of ResInsight version 0.4.8

CommonCode/cafEffectCache.cpp

@@ -0,0 +1,102 @@
+//##################################################################################################
+//
+//   Custom Visualization Core library
+//   Copyright (C) 2011-2012 Ceetron AS
+//    
+//   This library is free software: you can redistribute it and/or modify 
+//   it under the terms of the GNU General Public License as published by 
+//   the Free Software Foundation, either version 3 of the License, or 
+//   (at your option) any later version. 
+//    
+//   This library is distributed in the hope that it will be useful, but WITHOUT ANY 
+//   WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+//   FITNESS FOR A PARTICULAR PURPOSE.   
+//    
+//   See the GNU General Public License at <<http://www.gnu.org/licenses/gpl.html>> 
+//   for more details. 
+//
+//##################################################################################################
+
+#include "cafEffectGenerator.h"
+#include "cafEffectCache.h"
+
+namespace caf {
+
+
+//==================================================================================================
+//
+// EffectCache
+//
+//==================================================================================================
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+EffectCache::EffectCache()
+{
+    m_effectType = EffectGenerator::SHADER_BASED;
+}
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+EffectCache* EffectCache::instance()
+{
+    static EffectCache staticInstance;
+
+    return &staticInstance;
+}
+
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+cvf::ref<cvf::Effect> EffectCache::getOrCreateEffect(const EffectGenerator* generator)
+{
+    CVF_ASSERT(generator);
+
+    // Effect cache does not support mixing of effect types. Clear cache if type changes.
+    if (EffectGenerator::renderingMode() != m_effectType)
+    {
+        clear();
+        m_effectType = EffectGenerator::renderingMode();
+    }
+
+    size_t i;
+    for (i = 0; i < m_effectCache.size(); i++)
+    {
+        if (m_effectCache[i].first->isEqual(generator))
+        {
+            cvf::ref<cvf::Effect> effect = m_effectCache[i].second;
+            EffectGenerator* effGen = m_effectCache[i].first;
+            effGen->updateEffect(effect.p());
+
+            return effect;
+        }
+    }
+
+    EffectGenerator* myCopy = generator->copy();
+
+    cvf::ref<cvf::Effect> eff = generator->generateEffect();
+    m_effectCache.push_back(std::make_pair(myCopy, eff));
+
+    return eff;
+}
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+void EffectCache::clear()
+{
+    size_t i;
+    for (i = 0; i < m_effectCache.size(); i++)
+    {
+        EffectGenerator* effGenerator = m_effectCache[i].first;
+        delete effGenerator;
+    }
+
+    m_effectCache.clear();
+}
+
+
+}