Initial commit: Final state of the master project

Research/scene/Material/MaterialQuantizer/NormalQuantizer.cpp

@@ -0,0 +1,52 @@
+#pragma once
+#include <map>
+#include <vector>
+#include "NormalQuantizer.h"
+#include "../../../core/BitHelper.h"
+
+
+NormalQuantizer::NormalQuantizer(unsigned8 bits): mBits(bits)
+{
+	// Bits must be an even number, as there are two channels for an ONV
+	assert(bits % 2 == 0);
+
+	// Precalculate the channel mask
+	unsigned32 channelStartHS = 32 - SmallNormal::BITS / 2;
+	mChannelMask = BitHelper::GetHSMask<unsigned32>(channelStartHS, channelStartHS + mBits / 2);
+}
+
+std::map<SmallNormal, SmallNormal, NormalCompare>* NormalQuantizer::QuantizeMaterials(std::vector<SmallNormal> normals) const
+{
+	std::map<SmallNormal, SmallNormal, NormalCompare>* res = new std::map<SmallNormal, SmallNormal, NormalCompare>();
+	for (const SmallNormal& normal : normals)
+	{
+		res->insert(std::make_pair(normal, Quantize(normal)));
+	}
+	if (mBits <= QUANTIZE_ALL_UP_TO)
+	{
+		unsigned32 maxPerChannel = 1 << (mBits / 2);
+		unsigned8 shift = (SmallNormal::BITS - mBits) / 2;
+		for (unsigned32 x = 0; x < maxPerChannel; x++)
+			for (unsigned32 y = 0; y < maxPerChannel; y++)
+			{
+				SmallNormal v;
+				v.SetXComponent(x << shift);
+				v.SetYComponent(y << shift);
+				res->insert(std::make_pair(v, v));
+			}
+	}
+	return res;
+}
+
+SmallNormal NormalQuantizer::Quantize(const SmallNormal& normal) const
+{
+	SmallNormal quantized;
+	quantized.SetXComponent(normal.GetXComponent() & mChannelMask);
+	quantized.SetYComponent(normal.GetYComponent() & mChannelMask);
+	return quantized;
+}
+
+std::string NormalQuantizer::GetQuantizerDescriptor() const
+{
+	return std::to_string(mBits);
+}