Bug fixes:

--Disallow the use of synth when randomly generating xforms if the user has an Nvidia device present on their system.

Code changes:
--Use some CPU defines in CL code.
--Change curves color scaling buffer to be 2^16 per channel instead of 2^17 which was probably overkill.
--Code in RendererClDevice::Init() to detect Nvidia was wrong even thought it technically worked.

Source/Ember/EmberDefines.h

@@ -68,9 +68,9 @@ namespace EmberNs
 #define TMAX std::numeric_limits<T>::max()
 #define FLOAT_MAX_TAN 8388607.0f
 #define FLOAT_MIN_TAN -FLOAT_MAX_TAN
-#define CURVES_LENGTH 131072
+#define CURVES_LENGTH 65536
-#define CURVES_LENGTH_M1 131071.0f
+#define CURVES_LENGTH_M1 65535.0f
-#define ONE_OVER_CURVES_LENGTH_M1 7.62945273935e-6f
+#define ONE_OVER_CURVES_LENGTH_M1 1.525902189669e-5f
 #define EMPTYFIELD -9999
 typedef std::chrono::high_resolution_clock Clock;
 typedef std::chrono::duration<double, std::ratio<1, 1000>> DoubleMs;

Source/EmberCL/EmberCLStructs.h

@@ -85,8 +85,8 @@ static string ConstantDefinesString(bool doublePrecision)
 	   "#define SQRT5 2.2360679774997896964091736687313\n"
 	   "#define M_PHI 1.61803398874989484820458683436563\n"
 	   "#define DEG_2_RAD (MPI / 180)\n"
-	   "#define CURVES_LENGTH_M1 131071.0f\n"
+	   "#define CURVES_LENGTH_M1 ((real_bucket_t)" << CURVES_LENGTH_M1 << ")\n" <<
-	   "#define ONE_OVER_CURVES_LENGTH_M1 7.62945273935e-6f\n"
+	   "#define ONE_OVER_CURVES_LENGTH_M1 ((real_bucket_t)" << ONE_OVER_CURVES_LENGTH_M1 << ")\n" <<
 	   "\n"
 	   "//Index in each dimension of a thread within a block.\n"
 	   "#define THREAD_ID_X   (get_local_id(0))\n"

Source/EmberCL/RendererCL.cpp

@@ -630,6 +630,20 @@ bool RendererCL<T, bucketT>::RandVec(vector<QTIsaac<ISAAC_SIZE, ISAAC_INT>>& ran
 	return b;
 }
 
+/// <summary>
+/// Get whether any devices are from Nvidia.
+/// </summary>
+/// <returns>True if an devices are from Nvidia, else false.</returns>
+template <typename T, typename bucketT>
+bool RendererCL<T, bucketT>::AnyNvidia() const
+{
+	for (auto& dev : m_Devices)
+		if (dev->Nvidia())
+			return true;
+
+	return false;
+}
+
 /// <summary>
 /// Protected virtual functions overridden from Renderer.
 /// </summary>

Source/EmberCL/RendererCL.h

@@ -21,6 +21,7 @@ public:
 	virtual ~RendererCLBase() { }
 	virtual bool ReadFinal(v4F* pixels) = 0;
 	virtual bool ClearFinal() = 0;
+	virtual bool AnyNvidia() const = 0;
 };
 
 /// <summary>
@@ -154,6 +155,7 @@ public:
 	virtual string ErrorReportString() override;
 	virtual vector<string> ErrorReport() override;
 	virtual bool RandVec(vector<QTIsaac<ISAAC_SIZE, ISAAC_INT>>& randVec) override;
+	virtual bool AnyNvidia() const override;
 
 #ifndef TEST_CL
 protected:

Source/EmberCL/RendererClDevice.cpp

@@ -40,7 +40,7 @@ bool RendererClDevice::Init()
 
 	if (b && m_Wrapper.Ok() && !m_Init)
 	{
-		m_NVidia = ToLower(m_Info->PlatformName(m_PlatformIndex)).find_first_of("nvidia") != string::npos && m_Wrapper.LocalMemSize() > (32 * 1024);
+		m_NVidia = Find(ToLower(m_Info->PlatformName(m_PlatformIndex)), "nvidia") && m_Wrapper.LocalMemSize() > (32 * 1024);
 		m_WarpSize = m_NVidia ? 32 : 64;
 		m_Init = true;
 	}

Source/Fractorium/FractoriumMenus.cpp

@@ -53,14 +53,31 @@ void Fractorium::InitMenusUI()
 template <typename T>
 void FractoriumEmberController<T>::NewFlock(size_t count)
 {
+	bool nv = false;
 	Ember<T> ember;
 	StopAllPreviewRenderers();
 	m_EmberFile.Clear();
 	m_EmberFile.m_Filename = EmberFile<T>::DefaultFilename();
+	vector<eVariationId> filteredVariations;
+	vector<eVariationId>& filteredVariationsRef = m_FilteredVariations;
+	auto& deviceNames = OpenCLInfo::Instance()->AllDeviceNames();
+
+	for (auto& dev : deviceNames)
+		if (Find(ToLower(dev), "nvidia"))
+			nv = true;
+
+	if (nv)//Nvidia cannot handle synth. It takes over a minute to compile and uses about 4GB of memory.
+	{
+		filteredVariations = m_FilteredVariations;
+		filteredVariationsRef = filteredVariations;
+		std::remove(filteredVariations.begin(), filteredVariations.end(), eVariationId::VAR_SYNTH);
+		std::remove(filteredVariations.begin(), filteredVariations.end(), eVariationId::VAR_PRE_SYNTH);
+		std::remove(filteredVariations.begin(), filteredVariations.end(), eVariationId::VAR_POST_SYNTH);
+	}
 
 	for (size_t i = 0; i < count; i++)
 	{
-		m_SheepTools->Random(ember, m_FilteredVariations, static_cast<intmax_t>(QTIsaac<ISAAC_SIZE, ISAAC_INT>::LockedFrand<T>(-2, 2)), 0, MAX_CL_VARS);
+		m_SheepTools->Random(ember, filteredVariationsRef, static_cast<intmax_t>(QTIsaac<ISAAC_SIZE, ISAAC_INT>::LockedFrand<T>(-2, 2)), 0, MAX_CL_VARS);
 		ParamsToEmber(ember);
 		ember.m_Index = i;
 		ember.m_Name = m_EmberFile.m_Filename.toStdString() + "_" + ToString(i + 1ULL).toStdString();