Engine directory for ticket #1

Engine/source/ts/instancingMatHook.cpp

@@ -0,0 +1,67 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) 2012 GarageGames, LLC
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//-----------------------------------------------------------------------------
+
+#include "platform/platform.h"
+#include "ts/instancingMatHook.h"
+
+#include "platform/profiler.h"
+#include "materials/materialFeatureTypes.h"
+#include "materials/matInstance.h"
+
+
+const MatInstanceHookType InstancingMaterialHook::Type( "Instancing" );
+
+InstancingMaterialHook::InstancingMaterialHook() :
+   mMatInst( NULL )
+{
+}
+
+InstancingMaterialHook::~InstancingMaterialHook()
+{
+   SAFE_DELETE( mMatInst );
+}
+
+BaseMatInstance* InstancingMaterialHook::getInstancingMat( BaseMatInstance *matInst )
+{
+   PROFILE_SCOPE( InstancingMaterialHook_GetInstancingMat );
+
+   if ( matInst == NULL )
+      return NULL;
+
+   InstancingMaterialHook *hook = matInst->getHook<InstancingMaterialHook>();
+   if ( hook == NULL )
+   {
+      hook = new InstancingMaterialHook();
+      matInst->addHook( hook );
+
+      BaseMatInstance *instMat = matInst->getMaterial()->createMatInstance();
+      FeatureSet features( matInst->getRequestedFeatures() );
+      features.addFeature( MFT_UseInstancing ); 
+
+      if ( !instMat->init( features, matInst->getVertexFormat() ) )
+         SAFE_DELETE( instMat );
+
+      hook->mMatInst = instMat;
+   }
+
+   return hook->mMatInst;
+}