Semi-working base for bgfx renderer

2015-09-08 16:13:59 +02:00
parent c7f17c8ef0
commit c24b039005
47 changed files with 11176 additions and 43 deletions
@@ -0,0 +1,87 @@
+/*
+ * Copyright 2010-2015 Branimir Karadzic. All rights reserved.
+ * License: http://www.opensource.org/licenses/BSD-2-Clause
+ */
+
+#ifndef BX_ENDIAN_H_HEADER_GUARD
+#define BX_ENDIAN_H_HEADER_GUARD
+
+#include "bx.h"
+
+namespace bx
+{
+	inline uint16_t endianSwap(uint16_t _in)
+	{
+		return (_in>>8) | (_in<<8);
+	}
+	
+	inline uint32_t endianSwap(uint32_t _in)
+	{
+		return (_in>>24) | (_in<<24)
+			 | ( (_in&0x00ff0000)>>8) | ( (_in&0x0000ff00)<<8)
+			 ;
+	}
+
+	inline uint64_t endianSwap(uint64_t _in)
+	{
+		return (_in>>56) | (_in<<56)
+			 | ( (_in&UINT64_C(0x00ff000000000000) )>>40) | ( (_in&UINT64_C(0x000000000000ff00) )<<40)
+			 | ( (_in&UINT64_C(0x0000ff0000000000) )>>24) | ( (_in&UINT64_C(0x0000000000ff0000) )<<24)
+			 | ( (_in&UINT64_C(0x000000ff00000000) )>>8)  | ( (_in&UINT64_C(0x00000000ff000000) )<<8)
+			 ;
+	}
+
+	inline int16_t endianSwap(int16_t _in)
+	{
+		return (int16_t)endianSwap( (uint16_t)_in);
+	}
+
+	inline int32_t endianSwap(int32_t _in)
+	{
+		return (int32_t)endianSwap( (uint32_t)_in);
+	}
+
+	inline int64_t endianSwap(int64_t _in)
+	{
+		return (int64_t)endianSwap( (uint64_t)_in);
+	}
+
+	/// Input argument is encoded as little endian, convert it if neccessary
+	/// depending on host CPU endianess.
+	template <typename Ty>
+	inline Ty toLittleEndian(const Ty _in)
+	{
+#if BX_CPU_ENDIAN_BIG
+		return endianSwap(_in);
+#else
+		return _in;
+#endif // BX_CPU_ENDIAN_BIG
+	}
+
+	/// Input argument is encoded as big endian, convert it if neccessary
+	/// depending on host CPU endianess.
+	template <typename Ty>
+	inline Ty toBigEndian(const Ty _in)
+	{
+#if BX_CPU_ENDIAN_LITTLE
+		return endianSwap(_in);
+#else
+		return _in;
+#endif // BX_CPU_ENDIAN_LITTLE
+	}
+
+	/// If _littleEndian is true, converts input argument to from little endian
+	/// to host CPU endiness.
+	template <typename Ty>
+	inline Ty toHostEndian(const Ty _in, bool _fromLittleEndian)
+	{
+#if BX_CPU_ENDIAN_LITTLE
+		return _fromLittleEndian ? _in : endianSwap(_in);
+#else
+		return _fromLittleEndian ? endianSwap(_in) : _in;
+#endif // BX_CPU_ENDIAN_LITTLE
+	}
+
+} // namespace bx
+
+#endif // BX_ENDIAN_H_HEADER_GUARD