1 files changed, 85 insertions, 0 deletions
diff --git a/Runtime/Camera/UmbraBackwardsCompatibility.h b/Runtime/Camera/UmbraBackwardsCompatibility.h
new file mode 100644
index 0000000..d3eb40b
--- /dev/null
+++ b/Runtime/Camera/UmbraBackwardsCompatibility.h
@@ -0,0 +1,85 @@
+#ifndef UMBRA_BACKWARDS_COMPATIBILITY_H
+#define UMBRA_BACKWARDS_COMPATIBILITY_H
+
+#include "UmbraBackwardsCompatibilityDefine.h"
+#include "UmbraTomeData.h"
+
+#include "External/Umbra/builds/interface/runtime/umbraTome.hpp"
+#include "External/Umbra/builds/interface/runtime/umbraQuery.hpp"
+
+#if SUPPORT_BACKWARDS_COMPATIBLE_UMBRA
+#   include "External/Umbra_3_0/source/interface/runtime/umbraTome_3_0.hpp"
+#   include "External/Umbra_3_0/source/interface/runtime/umbraQuery_3_0.hpp"
+#endif
+
+inline void CleanupUmbraTomeData (UmbraTomeData& tomeData)
+{
+	if (tomeData.tome)
+	{
+		Umbra::TomeLoader::freeTome(tomeData.tome);
+		tomeData.tome = NULL;
+	}
+
+#if SUPPORT_BACKWARDS_COMPATIBLE_UMBRA
+	if (tomeData.legacyTome)
+	{
+		Umbra_3_0::TomeLoader::freeTome(tomeData.legacyTome);
+		tomeData.legacyTome = NULL;
+	}
+#endif	
+}
+inline const UmbraTomeData LoadUmbraTome (const UInt8* buf, size_t bytes)
+{
+	if (buf == NULL || bytes == 0)
+		return UmbraTomeData ();
+	
+    const Umbra::Tome* tome = Umbra::TomeLoader::loadFromBuffer(buf, bytes);
+	if (tome->getStatus() == Umbra::Tome::STATUS_OK)
+	{
+		UmbraTomeData tomeData;
+		tomeData.tome = tome;
+		return tomeData;
+	}
+	
+	
+#if SUPPORT_BACKWARDS_COMPATIBLE_UMBRA
+	if (tome && tome->getStatus() == Umbra::Tome::STATUS_OLDER_VERSION)
+	{
+		const Umbra_3_0::Tome* legacyTome = Umbra_3_0::TomeLoader::loadFromBuffer(buf, bytes);
+		if (legacyTome && legacyTome->getStatus() == Umbra_3_0::Tome::STATUS_OK)
+		{
+			UmbraTomeData tomeData;
+			tomeData.legacyTome = legacyTome;
+			return tomeData;
+		}
+		
+		ErrorString("Failed to load legacy tome data");
+		return UmbraTomeData();
+	}
+#endif
+	
+	WarningString ("Loading deprecated Occlusion Culling is not supported. Please rebake the occlusion culling data.");
+	return UmbraTomeData ();
+}
+
+inline void SetGateStates( Umbra::Query* query, const UmbraTomeData& tomeData, Umbra::GateStateVector& gateVector)
+{
+#if SUPPORT_BACKWARDS_COMPATIBLE_UMBRA
+	if (tomeData.IsLegacyTome ())
+	{
+		((Umbra_3_0::QueryExt*)query)->setGateStates((const Umbra_3_0::GateStateVector*)&gateVector);
+		return;
+	}
+#endif
+	
+	query->setGateStates(&gateVector);
+}
+
+#if SUPPORT_BACKWARDS_COMPATIBLE_UMBRA
+	#define UMBRA_TOME_METHOD(TOME,method) (TOME.tome != NULL ? TOME.tome->method : TOME.legacyTome->method)
+#else
+	#define UMBRA_TOME_METHOD(TOME,method) (TOME.tome->method)
+#endif
+
+
+#endif
+\ No newline at end of file