initial commit, 4.5 stable

thirdparty/cvtt/ConvectionKernels_UnfinishedEndpoints.h

@@ -0,0 +1,121 @@
+#pragma once
+
+#include "ConvectionKernels_Util.h"
+
+namespace cvtt
+{
+    namespace Internal
+    {
+        template<int TVectorSize>
+        class UnfinishedEndpoints
+        {
+        public:
+            typedef ParallelMath::Float MFloat;
+            typedef ParallelMath::UInt16 MUInt16;
+            typedef ParallelMath::UInt15 MUInt15;
+            typedef ParallelMath::SInt16 MSInt16;
+            typedef ParallelMath::SInt32 MSInt32;
+
+            UnfinishedEndpoints()
+            {
+            }
+
+            UnfinishedEndpoints(const MFloat *base, const MFloat *offset)
+            {
+                for (int ch = 0; ch < TVectorSize; ch++)
+                    m_base[ch] = base[ch];
+                for (int ch = 0; ch < TVectorSize; ch++)
+                    m_offset[ch] = offset[ch];
+            }
+
+            UnfinishedEndpoints(const UnfinishedEndpoints& other)
+            {
+                for (int ch = 0; ch < TVectorSize; ch++)
+                    m_base[ch] = other.m_base[ch];
+                for (int ch = 0; ch < TVectorSize; ch++)
+                    m_offset[ch] = other.m_offset[ch];
+            }
+
+            void FinishHDRUnsigned(int tweak, int range, MSInt16 *outEP0, MSInt16 *outEP1, ParallelMath::RoundTowardNearestForScope *roundingMode)
+            {
+                float tweakFactors[2];
+                Util::ComputeTweakFactors(tweak, range, tweakFactors);
+
+                for (int ch = 0; ch < TVectorSize; ch++)
+                {
+                    MUInt15 channelEPs[2];
+                    for (int epi = 0; epi < 2; epi++)
+                    {
+                        MFloat f = ParallelMath::Clamp(m_base[ch] + m_offset[ch] * tweakFactors[epi], 0.0f, 31743.0f);
+                        channelEPs[epi] = ParallelMath::RoundAndConvertToU15(f, roundingMode);
+                    }
+
+                    outEP0[ch] = ParallelMath::LosslessCast<MSInt16>::Cast(channelEPs[0]);
+                    outEP1[ch] = ParallelMath::LosslessCast<MSInt16>::Cast(channelEPs[1]);
+                }
+            }
+
+            void FinishHDRSigned(int tweak, int range, MSInt16* outEP0, MSInt16* outEP1, ParallelMath::RoundTowardNearestForScope* roundingMode)
+            {
+                float tweakFactors[2];
+                Util::ComputeTweakFactors(tweak, range, tweakFactors);
+
+                for (int ch = 0; ch < TVectorSize; ch++)
+                {
+                    MSInt16 channelEPs[2];
+                    for (int epi = 0; epi < 2; epi++)
+                    {
+                        MFloat f = ParallelMath::Clamp(m_base[ch] + m_offset[ch] * tweakFactors[epi], -31743.0f, 31743.0f);
+                        channelEPs[epi] = ParallelMath::RoundAndConvertToS16(f, roundingMode);
+                    }
+
+                    outEP0[ch] = channelEPs[0];
+                    outEP1[ch] = channelEPs[1];
+                }
+            }
+
+            void FinishLDR(int tweak, int range, MUInt15* outEP0, MUInt15* outEP1)
+            {
+                ParallelMath::RoundTowardNearestForScope roundingMode;
+
+                float tweakFactors[2];
+                Util::ComputeTweakFactors(tweak, range, tweakFactors);
+
+                for (int ch = 0; ch < TVectorSize; ch++)
+                {
+                    MFloat ep0f = ParallelMath::Clamp(m_base[ch] + m_offset[ch] * tweakFactors[0], 0.0f, 255.0f);
+                    MFloat ep1f = ParallelMath::Clamp(m_base[ch] + m_offset[ch] * tweakFactors[1], 0.0f, 255.0f);
+                    outEP0[ch] = ParallelMath::RoundAndConvertToU15(ep0f, &roundingMode);
+                    outEP1[ch] = ParallelMath::RoundAndConvertToU15(ep1f, &roundingMode);
+                }
+            }
+
+            template<int TNewVectorSize>
+            UnfinishedEndpoints<TNewVectorSize> ExpandTo(float filler)
+            {
+                MFloat newBase[TNewVectorSize];
+                MFloat newOffset[TNewVectorSize];
+
+                for (int ch = 0; ch < TNewVectorSize && ch < TVectorSize; ch++)
+                {
+                    newBase[ch] = m_base[ch];
+                    newOffset[ch] = m_offset[ch];
+                }
+
+                MFloat fillerV = ParallelMath::MakeFloat(filler);
+
+                for (int ch = TVectorSize; ch < TNewVectorSize; ch++)
+                {
+                    newBase[ch] = fillerV;
+                    newOffset[ch] = ParallelMath::MakeFloatZero();
+                }
+
+                return UnfinishedEndpoints<TNewVectorSize>(newBase, newOffset);
+            }
+
+        private:
+            MFloat m_base[TVectorSize];
+            MFloat m_offset[TVectorSize];
+        };
+    }
+}