Initial commit:

PhysX 3.4.0 Update @ 21294896
APEX 1.4.0 Update @ 21275617

[CL 21300167]

1 files changed, 154 insertions, 0 deletions

diff --git a/APEX_1.4/common/include/TableLookup.h b/APEX_1.4/common/include/TableLookup.h
new file mode 100644
index 00000000..9b32d68e
--- /dev/null
+++ b/APEX_1.4/common/include/TableLookup.h
@@ -0,0 +1,154 @@
+/*
+ * Copyright (c) 2008-2015, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * NVIDIA CORPORATION and its licensors retain all intellectual property
+ * and proprietary rights in and to this software, related documentation
+ * and any modifications thereto.  Any use, reproduction, disclosure or
+ * distribution of this software and related documentation without an express
+ * license agreement from NVIDIA CORPORATION is strictly prohibited.
+ */
+
+
+#ifndef TABLE_LOOKUP_H
+#define TABLE_LOOKUP_H
+
+namespace nvidia
+{
+namespace apex
+{
+
+// Stored Tables
+const float custom[] =	{ 1.00f, 1.00f, 1.00f, 1.00f, 1.00f, 1.00f, 1.00f, 1.00f, 1.00f, 1.00f, 1.00f };
+const float linear[] =	{ 1.00f, 0.90f, 0.80f, 0.70f, 0.60f, 0.50f, 0.40f, 0.30f, 0.20f, 0.10f, 0.00f };
+const float steep[] =	{ 1.00f, 0.99f, 0.96f, 0.91f, 0.84f, 0.75f, 0.64f, 0.51f, 0.36f, 0.19f, 0.00f };
+const float scurve[] =	{ 1.00f, 0.99f, 0.96f, 0.91f, 0.80f, 0.50f, 0.20f, 0.09f, 0.04f, 0.01f, 0.00f };
+
+// Table sizes must be same for all stored tables
+#define NUM_ELEMENTS(X) (sizeof(X)/sizeof(*(X)))
+#define TABLE_SIZE NUM_ELEMENTS(custom)
+
+// Stored Table enums
+struct TableName
+{
+	enum Enum
+	{
+		CUSTOM = 0,
+		LINEAR,
+		STEEP,
+		SCURVE,
+	};
+};
+
+struct TableLookup
+{
+	float xVals[TABLE_SIZE];
+	float yVals[TABLE_SIZE];
+	float x1;
+	float x2;
+	float multiplier;
+
+#ifdef __CUDACC__
+	__device__ TableLookup() {}
+#else
+	TableLookup():
+		x1(0),
+		x2(0),
+		multiplier(0)
+	{
+		zeroTable();
+	}
+#endif
+
+	PX_CUDA_CALLABLE void zeroTable()
+	{
+		for (size_t i = 0; i < TABLE_SIZE; ++i)
+		{
+			xVals[i] = 0.0f;
+			yVals[i] = 0.0f;
+		}
+	}
+
+	PX_CUDA_CALLABLE void applyStoredTable(TableName::Enum tableName)
+	{
+		// build y values
+		for (size_t i = 0; i < TABLE_SIZE; ++i)
+		{
+			if (tableName == TableName::LINEAR)
+			{
+				yVals[i] = linear[i];
+			}
+			else if (tableName == TableName::STEEP)
+			{
+				yVals[i] = steep[i];
+			}
+			else if (tableName == TableName::SCURVE)
+			{
+				yVals[i] = scurve[i];
+			}
+			else if (tableName == TableName::CUSTOM)
+			{
+				yVals[i] = custom[i];
+			}
+		}
+	}
+
+	PX_CUDA_CALLABLE void buildTable()
+	{
+		// build x values
+		float interval = (x2 - x1) / (TABLE_SIZE - 1);
+		for (size_t i = 0; i < TABLE_SIZE; ++i)
+		{
+			xVals[i] = x1 + i * interval;
+		}
+
+		// apply multipler to y values
+		if (multiplier >= -1.0f && multiplier <= 1.0f)
+		{
+			for (size_t i = 0; i < TABLE_SIZE; ++i)
+			{
+				yVals[i] = yVals[i] * multiplier;
+			}
+
+			// offset = max y value in array
+			float max = yVals[0];
+			for (size_t i = 1; i < TABLE_SIZE; ++i)
+			{
+				if (yVals[i] > max)
+				{
+					max = yVals[i];
+				}
+			}
+
+			// apply offset
+			for (size_t i = 0; i < TABLE_SIZE; ++i)
+			{
+				yVals[i] = yVals[i] + (1.0f - max);
+			}
+		}
+	}
+	
+	PX_CUDA_CALLABLE float lookupTableValue(float x) const
+	{
+		if (x <= xVals[0])
+		{
+			return yVals[0];
+		}
+		else if (x >= xVals[TABLE_SIZE-1])
+		{
+			return yVals[TABLE_SIZE-1];
+		}
+		else
+		{
+			// linear interpolation between x values
+			float interval = (xVals[TABLE_SIZE-1] - xVals[0]) / (TABLE_SIZE - 1);
+			uint32_t lerpPos = (uint32_t)((x - xVals[0]) / interval);
+			float yDiff = yVals[lerpPos+1] - yVals[lerpPos];
+			return yVals[lerpPos] + (x - xVals[lerpPos]) / interval * yDiff;
+		}
+	}
+};
+
+}
+} // namespace nvidia::apex
+
+#endif