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/*
* Copyright 2000-2001 VA Linux Systems, Inc.
* (C) Copyright IBM Corporation 2004
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, and/or sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
* VA LINUX SYSTEM, IBM AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* \file spantmp_common.h
*
* common macros for span read / write functions to be used in the depth,
* stencil and pixel span templates.
*/
#ifndef HW_WRITE_LOCK
#define HW_WRITE_LOCK() HW_LOCK()
#endif
#ifndef HW_WRITE_UNLOCK
#define HW_WRITE_UNLOCK() HW_UNLOCK()
#endif
#ifndef HW_READ_LOCK
#define HW_READ_LOCK() HW_LOCK()
#endif
#ifndef HW_READ_UNLOCK
#define HW_READ_UNLOCK() HW_UNLOCK()
#endif
#ifndef HW_CLIPLOOP
#define HW_CLIPLOOP() \
do { \
int minx = 0; \
int miny = 0; \
int maxx = dPriv->w; \
int maxy = dPriv->h;
#endif
#ifndef HW_ENDCLIPLOOP
#define HW_ENDCLIPLOOP() \
} while (0)
#endif
#ifndef CLIPPIXEL
#define CLIPPIXEL( _x, _y ) \
((_x >= minx) && (_x < maxx) && (_y >= miny) && (_y < maxy))
#endif
#ifndef CLIPSPAN
#define CLIPSPAN( _x, _y, _n, _x1, _n1, _i ) \
if ( _y < miny || _y >= maxy /*|| _x + n < minx || _x >=maxx*/ ) { \
_n1 = 0, _x1 = x; \
} else { \
_n1 = _n; \
_x1 = _x; \
if ( _x1 < minx ) _i += (minx-_x1), n1 -= (minx-_x1), _x1 = minx; \
if ( _x1 + _n1 >= maxx ) n1 -= (_x1 + n1 - maxx); \
}
#endif
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