OGRE
1.9.0
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Class for manipulating bit patterns. More...
#include <OgreBitwise.h>
Static Public Member Functions | |
static FORCEINLINE uint16 | bswap16 (uint16 arg) |
Returns value with reversed bytes order. | |
static FORCEINLINE uint32 | bswap32 (uint32 arg) |
Returns value with reversed bytes order. | |
static FORCEINLINE uint64 | bswap64 (uint64 arg) |
Returns value with reversed bytes order. | |
static void | bswapBuffer (void *pData, size_t size) |
Reverses byte order of buffer. | |
static void | bswapChunks (void *pData, size_t size, size_t count) |
Reverses byte order of chunks in buffer, where 'size' is size of one chunk. | |
template<typename SrcT , typename DestT > | |
static DestT | convertBitPattern (SrcT srcValue, SrcT srcBitMask, DestT destBitMask) |
Takes a value with a given src bit mask, and produces another value with a desired bit mask. | |
static FORCEINLINE uint32 | firstPO2From (uint32 n) |
Returns the closest power-of-two number greater or equal to value. | |
static unsigned int | fixedToFixed (uint32 value, unsigned int n, unsigned int p) |
Convert N bit colour channel value to P bits. | |
static float | fixedToFloat (unsigned value, unsigned int bits) |
Fixed point to float. | |
static unsigned int | floatToFixed (const float value, const unsigned int bits) |
Convert floating point colour channel value between 0.0 and 1.0 (otherwise clamped) to integer of a certain number of bits. | |
static uint16 | floatToHalf (float i) |
Convert a float32 to a float16 (NV_half_float) Courtesy of OpenEXR. | |
static uint16 | floatToHalfI (uint32 i) |
Converts float in uint32 format to a a half in uint16 format. | |
template<typename T > | |
static FORCEINLINE unsigned int | getBitShift (T mask) |
Returns the number of bits a pattern must be shifted right by to remove right-hand zeros. | |
static float | halfToFloat (uint16 y) |
Convert a float16 (NV_half_float) to a float32 Courtesy of OpenEXR. | |
static uint32 | halfToFloatI (uint16 y) |
Converts a half in uint16 format to a float in uint32 format. | |
static unsigned int | intRead (const void *src, int n) |
Read a n*8 bits integer value to memory in native endian. | |
static void | intWrite (void *dest, const int n, const unsigned int value) |
Write a n*8 bits integer value to memory in native endian. | |
template<typename T > | |
static FORCEINLINE bool | isPO2 (T n) |
Determines whether the number is power-of-two or not. | |
static FORCEINLINE unsigned int | mostSignificantBitSet (unsigned int value) |
Returns the most significant bit set in a value. | |
Class for manipulating bit patterns.
Definition at line 48 of file OgreBitwise.h.
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Returns value with reversed bytes order.
Definition at line 52 of file OgreBitwise.h.
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Returns value with reversed bytes order.
Definition at line 64 of file OgreBitwise.h.
Referenced by bswap64().
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Returns value with reversed bytes order.
Definition at line 76 of file OgreBitwise.h.
References bswap32().
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Reverses byte order of buffer.
Use bswap16/32/64 instead if possible.
Definition at line 96 of file OgreBitwise.h.
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Reverses byte order of chunks in buffer, where 'size' is size of one chunk.
Definition at line 108 of file OgreBitwise.h.
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Takes a value with a given src bit mask, and produces another value with a desired bit mask.
Definition at line 179 of file OgreBitwise.h.
References getBitShift().
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Returns the closest power-of-two number greater or equal to value.
Definition at line 137 of file OgreBitwise.h.
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Convert N bit colour channel value to P bits.
It fills P bits with the bit pattern repeated. (this is /((1<<n)-1) in fixed point)
Definition at line 204 of file OgreBitwise.h.
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Fixed point to float.
Definition at line 238 of file OgreBitwise.h.
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Convert floating point colour channel value between 0.0 and 1.0 (otherwise clamped) to integer of a certain number of bits.
Works for any value of bits between 0 and 31.
Definition at line 228 of file OgreBitwise.h.
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Convert a float32 to a float16 (NV_half_float) Courtesy of OpenEXR.
Definition at line 299 of file OgreBitwise.h.
References floatToHalfI().
Converts float in uint32 format to a a half in uint16 format.
Definition at line 307 of file OgreBitwise.h.
Referenced by floatToHalf().
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Returns the number of bits a pattern must be shifted right by to remove right-hand zeros.
Definition at line 160 of file OgreBitwise.h.
Referenced by convertBitPattern().
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Convert a float16 (NV_half_float) to a float32 Courtesy of OpenEXR.
Definition at line 350 of file OgreBitwise.h.
References halfToFloatI().
Converts a half in uint16 format to a float in uint32 format.
Definition at line 359 of file OgreBitwise.h.
Referenced by halfToFloat().
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Read a n*8 bits integer value to memory in native endian.
Definition at line 274 of file OgreBitwise.h.
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Write a n*8 bits integer value to memory in native endian.
Definition at line 246 of file OgreBitwise.h.
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Determines whether the number is power-of-two or not.
Definition at line 152 of file OgreBitwise.h.
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Returns the most significant bit set in a value.
Definition at line 124 of file OgreBitwise.h.