initial commit, 4.5 stable

thirdparty/cvtt/ConvectionKernels_AggregatedError.h

@@ -0,0 +1,55 @@
+#pragma once
+#ifndef __CVTT_AGGREGATEDERROR_H__
+#define __CVTT_AGGREGATEDERROR_H__
+
+#include "ConvectionKernels_ParallelMath.h"
+
+namespace cvtt
+{
+    namespace Internal
+    {
+        template<int TVectorSize>
+        class AggregatedError
+        {
+        public:
+            typedef ParallelMath::UInt16 MUInt16;
+            typedef ParallelMath::UInt31 MUInt31;
+            typedef ParallelMath::Float MFloat;
+
+            AggregatedError()
+            {
+                for (int ch = 0; ch < TVectorSize; ch++)
+                    m_errorUnweighted[ch] = ParallelMath::MakeUInt31(0);
+            }
+
+            void Add(const MUInt16 &channelErrorUnweighted, int ch)
+            {
+                m_errorUnweighted[ch] = m_errorUnweighted[ch] + ParallelMath::ToUInt31(channelErrorUnweighted);
+            }
+
+            MFloat Finalize(uint32_t flags, const float channelWeightsSq[TVectorSize]) const
+            {
+                if (flags & cvtt::Flags::Uniform)
+                {
+                    MUInt31 total = m_errorUnweighted[0];
+                    for (int ch = 1; ch < TVectorSize; ch++)
+                        total = total + m_errorUnweighted[ch];
+                    return ParallelMath::ToFloat(total);
+                }
+                else
+                {
+                    MFloat total = ParallelMath::ToFloat(m_errorUnweighted[0]) * channelWeightsSq[0];
+                    for (int ch = 1; ch < TVectorSize; ch++)
+                        total = total + ParallelMath::ToFloat(m_errorUnweighted[ch]) * channelWeightsSq[ch];
+                    return total;
+                }
+            }
+
+        private:
+            MUInt31 m_errorUnweighted[TVectorSize];
+        };
+    }
+}
+
+#endif
+