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76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
#ifndef _RGLUTILS_H_
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#define _RGLUTILS_H_
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#include "Types.h"
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#include "../export/RGL/export.h"
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#include "platform.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef MSVC
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#define RGL_LIKELY(COND) (COND)
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#define RGL_UNLIKELY(COND) (COND)
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#else
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#define RGL_LIKELY(COND) __builtin_expect((COND),1)
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#define RGL_UNLIKELY(COND) __builtin_expect((COND),0)
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#endif
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#define MAX(A,B) ((A)>(B)?(A):(B))
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#define MIN(A,B) ((A)<(B)?(A):(B))
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#define _RGL_FLOAT_AS_UINT(x) ({union {float f; unsigned int i;} u; u.f=(x); u.i;})
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#define rglClampf(value) (MAX( MIN((value), 1.f ), 0.f ))
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#define endianSwapHalf(v) (((v) >> 8 & 0x00ff) | ((v) << 8 & 0xff00))
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#define endianSwapWord(v) (((v) & 0xff ) << 24 | ((v) & 0xff00 ) << 8 | ((v) & 0xff0000 ) >> 8 | ((v) & 0xff000000 ) >> 24)
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#define endianSwapWordByHalf(v) (((v) & 0xffff ) << 16 | (v) >> 16)
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static inline int rglLog2( unsigned int i )
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{
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int l = 0;
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while ( i )
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{
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++l;
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i >>= 1;
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}
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return l -1;
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}
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#define rglIsPow2(i) (((i) & ((i) - 1 )) == 0)
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// Pad argument x to the next multiple of argument pad.
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#define rglPad(x, pad) (((x) + (pad) - 1 ) / (pad) * (pad))
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// Pad pointer x to the next multiple of argument pad.
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static inline char* rglPadPtr( const char* p, unsigned int pad )
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{
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intptr_t x = (intptr_t)p;
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x = ( x + pad - 1 ) / pad * pad;
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return ( char* )x;
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}
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// names API
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RGL_EXPORT unsigned int rglCreateName (void *data, void* object);
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RGL_EXPORT unsigned int rglIsName( void *data, unsigned int name);
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RGL_EXPORT void rglEraseName (void *data, unsigned int name);
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static inline void *rglGetNamedValue(void *data, unsigned int name )
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{
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return ((struct rglNameSpace*)data)->data[name - 1];
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}
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void rglTexNameSpaceResetNames(void *data);
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GLboolean rglTexNameSpaceCreateNameLazy(void *data, GLuint name );
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GLboolean rglTexNameSpaceIsName(void *data, GLuint name );
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void rglTexNameSpaceDeleteNames(void *data, GLsizei n, const GLuint *names );
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void rglTexNameSpaceReinit(void *saved, void *active);
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#ifdef __cplusplus
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}
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#endif
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#endif // _RGL_UTILS_H_
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