dc8692ba94
See USE_SOFTWARE_CACHE in Bullet\src\BulletMultiThreaded\SpuNarrowPhaseCollisionTask\SpuGatheringCollisionTask.cpp It improves the Bullet midphase collision detection (triangle/vertex fetch) The license is CommonPublicLicense-1.0, see included license docs.
39 lines
1.4 KiB
C
39 lines
1.4 KiB
C
/* --------------------------------------------------------------- */
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/* PLEASE DO NOT MODIFY THIS SECTION */
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/* This prolog section is automatically generated. */
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/* */
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/* (C) Copyright 2001,2006, */
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/* International Business Machines Corporation, */
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/* */
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/* All Rights Reserved. */
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/* --------------------------------------------------------------- */
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/* PROLOG END TAG zYx */
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/* nway-replace.h
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*
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* Copyright (C) 2005 IBM Corp.
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*
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* Implement replacement for software
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* managed cache.
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*/
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#ifndef __SPE_CACHE_NWAY_REPLACE_H_
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#define __SPE_CACHE_NWAY_REPLACE_H_
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static vec_uint4 spe_cache_replace_cntr[SPE_CACHE_NSETS+1];
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static inline vec_uint4 _spe_cache_replace_(int set, int avail)
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{
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unsigned int mask = ((1 << SPE_CACHE_NWAY) - 1) & avail;
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unsigned int curr, currbit, next;
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curr = spu_extract(spe_cache_replace_cntr[set], 0) & SPE_CACHE_NWAY_MASK;
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currbit = (1 << curr);
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next = (curr + 1) & SPE_CACHE_NWAY_MASK;
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spe_cache_replace_cntr[set] = (vec_uint4) spu_promote(next, 0);
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mask = (mask & currbit) ? currbit : mask;
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return (vec_uint4) spu_promote(mask, 0);
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}
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#endif
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