470 lines
15 KiB
C
470 lines
15 KiB
C
/*
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Copyright 1989, 1994, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
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OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall
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not be used in advertising or otherwise to promote the sale, use or
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other dealings in this Software without prior written authorization
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from The Open Group.
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*/
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/*
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* cfb8bit.c
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*
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* 8 bit color frame buffer utility routines
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#if PSZ == 8
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#include <X11/X.h>
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#include <X11/Xmd.h>
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#include <X11/Xproto.h>
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#include "gcstruct.h"
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#include "windowstr.h"
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#include "scrnintstr.h"
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#include "pixmapstr.h"
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#include "regionstr.h"
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#include "cfb.h"
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#include "cfbmskbits.h"
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#include "cfb8bit.h"
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PixelGroup cfb8StippleMasks[NUM_MASKS] = {
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#if NUM_MASKS == 16
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0x00000000, 0x000000ff, 0x0000ff00, 0x0000ffff,
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0x00ff0000, 0x00ff00ff, 0x00ffff00, 0x00ffffff,
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0xff000000, 0xff0000ff, 0xff00ff00, 0xff00ffff,
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0xffff0000, 0xffff00ff, 0xffffff00, 0xffffffff
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#else /* NUM_MASKS == 256 */
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0x0000000000000000, 0x00000000000000ff,
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0x000000000000ff00, 0x000000000000ffff,
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0x0000000000ff0000, 0x0000000000ff00ff,
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0x0000000000ffff00, 0x0000000000ffffff,
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0x00000000ff000000, 0x00000000ff0000ff,
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0x00000000ff00ff00, 0x00000000ff00ffff,
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0x00000000ffff0000, 0x00000000ffff00ff,
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0x00000000ffffff00, 0x00000000ffffffff,
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0x000000ff00000000, 0x000000ff000000ff,
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0x000000ff0000ff00, 0x000000ff0000ffff,
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0x000000ff00ff0000, 0x000000ff00ff00ff,
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0x000000ff00ffff00, 0x000000ff00ffffff,
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0x000000ffff000000, 0x000000ffff0000ff,
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0x000000ffff00ff00, 0x000000ffff00ffff,
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0x000000ffffff0000, 0x000000ffffff00ff,
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0x000000ffffffff00, 0x000000ffffffffff,
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0x0000ff0000000000, 0x0000ff00000000ff,
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0x0000ff000000ff00, 0x0000ff000000ffff,
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0x0000ff0000ff0000, 0x0000ff0000ff00ff,
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0x0000ff0000ffff00, 0x0000ff0000ffffff,
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0x0000ff00ff000000, 0x0000ff00ff0000ff,
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0x0000ff00ff00ff00, 0x0000ff00ff00ffff,
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0x0000ff00ffff0000, 0x0000ff00ffff00ff,
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0x0000ff00ffffff00, 0x0000ff00ffffffff,
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0x0000ffff00000000, 0x0000ffff000000ff,
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0x0000ffff0000ff00, 0x0000ffff0000ffff,
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0x0000ffff00ff0000, 0x0000ffff00ff00ff,
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0x0000ffff00ffff00, 0x0000ffff00ffffff,
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0x0000ffffff000000, 0x0000ffffff0000ff,
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0x0000ffffff00ff00, 0x0000ffffff00ffff,
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0x0000ffffffff0000, 0x0000ffffffff00ff,
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0x0000ffffffffff00, 0x0000ffffffffffff,
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0x00ff000000000000, 0x00ff0000000000ff,
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0x00ff00000000ff00, 0x00ff00000000ffff,
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0x00ff000000ff0000, 0x00ff000000ff00ff,
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0x00ff000000ffff00, 0x00ff000000ffffff,
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0x00ff0000ff000000, 0x00ff0000ff0000ff,
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0x00ff0000ff00ff00, 0x00ff0000ff00ffff,
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0x00ff0000ffff0000, 0x00ff0000ffff00ff,
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0x00ff0000ffffff00, 0x00ff0000ffffffff,
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0x00ff00ff00000000, 0x00ff00ff000000ff,
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0x00ff00ff0000ff00, 0x00ff00ff0000ffff,
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0x00ff00ff00ff0000, 0x00ff00ff00ff00ff,
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0x00ff00ff00ffff00, 0x00ff00ff00ffffff,
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0x00ff00ffff000000, 0x00ff00ffff0000ff,
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0x00ff00ffff00ff00, 0x00ff00ffff00ffff,
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0x00ff00ffffff0000, 0x00ff00ffffff00ff,
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0x00ff00ffffffff00, 0x00ff00ffffffffff,
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0x00ffff0000000000, 0x00ffff00000000ff,
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0x00ffff000000ff00, 0x00ffff000000ffff,
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0x00ffff0000ff0000, 0x00ffff0000ff00ff,
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0x00ffff0000ffff00, 0x00ffff0000ffffff,
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0x00ffff00ff000000, 0x00ffff00ff0000ff,
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0x00ffff00ff00ff00, 0x00ffff00ff00ffff,
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0x00ffff00ffff0000, 0x00ffff00ffff00ff,
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0x00ffff00ffffff00, 0x00ffff00ffffffff,
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0x00ffffff00000000, 0x00ffffff000000ff,
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0x00ffffff0000ff00, 0x00ffffff0000ffff,
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0x00ffffff00ff0000, 0x00ffffff00ff00ff,
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0x00ffffff00ffff00, 0x00ffffff00ffffff,
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0x00ffffffff000000, 0x00ffffffff0000ff,
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0x00ffffffff00ff00, 0x00ffffffff00ffff,
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0x00ffffffffff0000, 0x00ffffffffff00ff,
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0x00ffffffffffff00, 0x00ffffffffffffff,
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0xff00000000000000, 0xff000000000000ff,
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0xff0000000000ff00, 0xff0000000000ffff,
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0xff00000000ff0000, 0xff00000000ff00ff,
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0xff00000000ffff00, 0xff00000000ffffff,
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0xff000000ff000000, 0xff000000ff0000ff,
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0xff000000ff00ff00, 0xff000000ff00ffff,
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0xff000000ffff0000, 0xff000000ffff00ff,
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0xff000000ffffff00, 0xff000000ffffffff,
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0xff0000ff00000000, 0xff0000ff000000ff,
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0xff0000ff0000ff00, 0xff0000ff0000ffff,
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0xff0000ff00ff0000, 0xff0000ff00ff00ff,
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0xff0000ff00ffff00, 0xff0000ff00ffffff,
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0xff0000ffff000000, 0xff0000ffff0000ff,
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0xff0000ffff00ff00, 0xff0000ffff00ffff,
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0xff0000ffffff0000, 0xff0000ffffff00ff,
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0xff0000ffffffff00, 0xff0000ffffffffff,
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0xff00ff0000000000, 0xff00ff00000000ff,
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0xff00ff000000ff00, 0xff00ff000000ffff,
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0xff00ff0000ff0000, 0xff00ff0000ff00ff,
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0xff00ff0000ffff00, 0xff00ff0000ffffff,
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0xff00ff00ff000000, 0xff00ff00ff0000ff,
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0xff00ff00ff00ff00, 0xff00ff00ff00ffff,
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0xff00ff00ffff0000, 0xff00ff00ffff00ff,
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0xff00ff00ffffff00, 0xff00ff00ffffffff,
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0xff00ffff00000000, 0xff00ffff000000ff,
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0xff00ffff0000ff00, 0xff00ffff0000ffff,
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0xff00ffff00ff0000, 0xff00ffff00ff00ff,
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0xff00ffff00ffff00, 0xff00ffff00ffffff,
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0xff00ffffff000000, 0xff00ffffff0000ff,
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0xff00ffffff00ff00, 0xff00ffffff00ffff,
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0xff00ffffffff0000, 0xff00ffffffff00ff,
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0xff00ffffffffff00, 0xff00ffffffffffff,
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0xffff000000000000, 0xffff0000000000ff,
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0xffff00000000ff00, 0xffff00000000ffff,
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0xffff000000ff0000, 0xffff000000ff00ff,
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0xffff000000ffff00, 0xffff000000ffffff,
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0xffff0000ff000000, 0xffff0000ff0000ff,
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0xffff0000ff00ff00, 0xffff0000ff00ffff,
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0xffff0000ffff0000, 0xffff0000ffff00ff,
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0xffff0000ffffff00, 0xffff0000ffffffff,
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0xffff00ff00000000, 0xffff00ff000000ff,
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0xffff00ff0000ff00, 0xffff00ff0000ffff,
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0xffff00ff00ff0000, 0xffff00ff00ff00ff,
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0xffff00ff00ffff00, 0xffff00ff00ffffff,
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0xffff00ffff000000, 0xffff00ffff0000ff,
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0xffff00ffff00ff00, 0xffff00ffff00ffff,
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0xffff00ffffff0000, 0xffff00ffffff00ff,
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0xffff00ffffffff00, 0xffff00ffffffffff,
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0xffffff0000000000, 0xffffff00000000ff,
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0xffffff000000ff00, 0xffffff000000ffff,
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0xffffff0000ff0000, 0xffffff0000ff00ff,
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0xffffff0000ffff00, 0xffffff0000ffffff,
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0xffffff00ff000000, 0xffffff00ff0000ff,
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0xffffff00ff00ff00, 0xffffff00ff00ffff,
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0xffffff00ffff0000, 0xffffff00ffff00ff,
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0xffffff00ffffff00, 0xffffff00ffffffff,
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0xffffffff00000000, 0xffffffff000000ff,
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0xffffffff0000ff00, 0xffffffff0000ffff,
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0xffffffff00ff0000, 0xffffffff00ff00ff,
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0xffffffff00ffff00, 0xffffffff00ffffff,
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0xffffffffff000000, 0xffffffffff0000ff,
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0xffffffffff00ff00, 0xffffffffff00ffff,
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0xffffffffffff0000, 0xffffffffffff00ff,
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0xffffffffffffff00, 0xffffffffffffffff
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#endif
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};
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int cfb8StippleMode, cfb8StippleAlu, cfb8StippleRRop;
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PixelGroup cfb8StippleFg, cfb8StippleBg, cfb8StipplePm;
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PixelGroup cfb8StippleAnd[NUM_MASKS], cfb8StippleXor[NUM_MASKS];
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int
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cfb8SetStipple (alu, fg, planemask)
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int alu;
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CfbBits fg, planemask;
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{
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CfbBits and, xor, rrop;
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int s;
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CfbBits c;
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cfb8StippleMode = FillStippled;
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cfb8StippleAlu = alu;
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cfb8StippleFg = fg & PMSK;
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cfb8StipplePm = planemask & PMSK;
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rrop = cfbReduceRasterOp (alu, fg, planemask, &and, &xor);
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cfb8StippleRRop = rrop;
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/*
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* create the appropriate pixel-fill bits for current
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* foreground
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*/
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for (s = 0; s < NUM_MASKS; s++)
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{
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c = cfb8StippleMasks[s];
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cfb8StippleAnd[s] = and | ~c;
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cfb8StippleXor[s] = xor & c;
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}
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return TRUE;
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}
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int
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cfb8SetOpaqueStipple (alu, fg, bg, planemask)
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int alu;
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CfbBits fg, bg, planemask;
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{
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CfbBits andfg, xorfg, andbg, xorbg, rropfg, rropbg;
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int s;
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CfbBits c;
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cfb8StippleMode = FillOpaqueStippled;
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cfb8StippleAlu = alu;
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cfb8StippleFg = fg & PMSK;
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cfb8StippleBg = bg & PMSK;
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cfb8StipplePm = planemask & PMSK;
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rropfg = cfbReduceRasterOp (alu, cfb8StippleFg, cfb8StipplePm, &andfg, &xorfg);
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rropbg = cfbReduceRasterOp (alu, cfb8StippleBg, cfb8StipplePm, &andbg, &xorbg);
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if (rropfg == rropbg)
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cfb8StippleRRop = rropfg;
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else
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cfb8StippleRRop = GXset;
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/*
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* create the appropriate pixel-fill bits for current
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* foreground
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*/
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for (s = 0; s < NUM_MASKS; s++)
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{
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c = cfb8StippleMasks[s];
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cfb8StippleAnd[s] = (andfg | ~c) & (andbg | c);
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cfb8StippleXor[s] = (xorfg & c) | (xorbg & ~c);
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}
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return TRUE;
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}
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/*
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* a grungy little routine. This computes clip masks
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* for partial character blts. Returns rgnOUT if the
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* entire character is clipped; returns rgnIN if the entire
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* character is unclipped; returns rgnPART if a portion of
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* the character is visible. Computes clip masks for each
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* longword of the character -- and those with the
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* contents of the glyph to compute the visible bits.
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*/
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#if PGSZ == 32
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#if (BITMAP_BIT_ORDER == MSBFirst)
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PixelGroup cfb8BitLenMasks[PGSZ] = {
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0xffffffff, 0x7fffffff, 0x3fffffff, 0x1fffffff,
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0x0fffffff, 0x07ffffff, 0x03ffffff, 0x01ffffff,
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0x00ffffff, 0x007fffff, 0x003fffff, 0x001fffff,
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0x000fffff, 0x0007ffff, 0x0003ffff, 0x0001ffff,
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0x0000ffff, 0x00007fff, 0x00003fff, 0x00001fff,
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0x00000fff, 0x000007ff, 0x000003ff, 0x000001ff,
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0x000000ff, 0x0000007f, 0x0000003f, 0x0000001f,
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0x0000000f, 0x00000007, 0x00000003, 0x00000001,
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};
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#else
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PixelGroup cfb8BitLenMasks[PGSZ] = {
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0xffffffff, 0xfffffffe, 0xfffffffc, 0xfffffff8,
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0xfffffff0, 0xffffffe0, 0xffffffc0, 0xffffff80,
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0xffffff00, 0xfffffe00, 0xfffffc00, 0xfffff800,
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0xfffff000, 0xffffe000, 0xffffc000, 0xffff8000,
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0xffff0000, 0xfffe0000, 0xfffc0000, 0xfff80000,
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0xfff00000, 0xffe00000, 0xffc00000, 0xff800000,
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0xff000000, 0xfe000000, 0xfc000000, 0xf8000000,
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0xf0000000, 0xe0000000, 0xc0000000, 0x80000000,
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};
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#endif /* BITMAP_BIT_ORDER */
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#else /* PGSZ == 64 */
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#if (BITMAP_BIT_ORDER == MSBFirst)
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PixelGroup cfb8BitLenMasks[PGSZ] = {
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0xffffffffffffffff, 0x7fffffffffffffff,
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0x3fffffffffffffff, 0x1fffffffffffffff,
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0x0fffffffffffffff, 0x07ffffffffffffff,
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0x03ffffffffffffff, 0x01ffffffffffffff,
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0x00ffffffffffffff, 0x007fffffffffffff,
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0x003fffffffffffff, 0x001fffffffffffff,
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0x000fffffffffffff, 0x0007ffffffffffff,
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0x0003ffffffffffff, 0x0001ffffffffffff,
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0x0000ffffffffffff, 0x00007fffffffffff,
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0x00003fffffffffff, 0x00001fffffffffff,
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0x00000fffffffffff, 0x000007ffffffffff,
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0x000003ffffffffff, 0x000001ffffffffff,
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0x000000ffffffffff, 0x0000007fffffffff,
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0x0000003fffffffff, 0x0000001fffffffff,
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0x0000000fffffffff, 0x00000007ffffffff,
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0x00000003ffffffff, 0x00000001ffffffff,
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0x00000000ffffffff, 0x000000007fffffff,
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0x000000003fffffff, 0x000000001fffffff,
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0x000000000fffffff, 0x0000000007ffffff,
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0x0000000003ffffff, 0x0000000001ffffff,
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0x0000000000ffffff, 0x00000000007fffff,
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0x00000000003fffff, 0x00000000001fffff,
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0x00000000000fffff, 0x000000000007ffff,
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0x000000000003ffff, 0x000000000001ffff,
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0x000000000000ffff, 0x0000000000007fff,
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0x0000000000003fff, 0x0000000000001fff,
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0x0000000000000fff, 0x00000000000007ff,
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0x00000000000003ff, 0x00000000000001ff,
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0x00000000000000ff, 0x000000000000007f,
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0x000000000000003f, 0x000000000000001f,
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0x000000000000000f, 0x0000000000000007,
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0x0000000000000003, 0x0000000000000001
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};
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#else
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PixelGroup cfb8BitLenMasks[PGSZ] = {
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0xffffffffffffffff, 0xfffffffffffffffe,
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0xfffffffffffffffc, 0xfffffffffffffff8,
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0xfffffffffffffff0, 0xffffffffffffffe0,
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0xffffffffffffffc0, 0xffffffffffffff80,
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0xffffffffffffff00, 0xfffffffffffffe00,
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0xfffffffffffffc00, 0xfffffffffffff800,
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0xfffffffffffff000, 0xffffffffffffe000,
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0xffffffffffffc000, 0xffffffffffff8000,
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0xffffffffffff0000, 0xfffffffffffe0000,
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0xfffffffffffc0000, 0xfffffffffff80000,
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0xfffffffffff00000, 0xffffffffffe00000,
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0xffffffffffc00000, 0xffffffffff800000,
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0xffffffffff000000, 0xfffffffffe000000,
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0xfffffffffc000000, 0xfffffffff8000000,
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0xfffffffff0000000, 0xffffffffe0000000,
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0xffffffffc0000000, 0xffffffff80000000,
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0xffffffff00000000, 0xfffffffe00000000,
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0xfffffffc00000000, 0xfffffff800000000,
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0xfffffff000000000, 0xffffffe000000000,
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0xffffffc000000000, 0xffffff8000000000,
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0xffffff0000000000, 0xfffffe0000000000,
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0xfffffc0000000000, 0xfffff80000000000,
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0xfffff00000000000, 0xffffe00000000000,
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0xffffc00000000000, 0xffff800000000000,
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0xffff000000000000, 0xfffe000000000000,
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0xfffc000000000000, 0xfff8000000000000,
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0xfff0000000000000, 0xffe0000000000000,
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0xffc0000000000000, 0xff80000000000000,
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0xff00000000000000, 0xfe00000000000000,
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0xfc00000000000000, 0xf800000000000000,
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0xf000000000000000, 0xe000000000000000,
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0xc000000000000000, 0x8000000000000000
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};
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#endif /* BITMAP_BIT_ORDER */
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#endif /* PGSZ */
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int
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cfb8ComputeClipMasks32 (pBox, numRects, x, y, w, h, clips)
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BoxPtr pBox;
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int numRects;
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int x, y, w, h;
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CARD32 *clips;
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{
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int yBand, yBandBot;
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int ch;
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CfbBits clip;
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int partIN = FALSE, partOUT = FALSE;
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int result;
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if (numRects == 0)
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return rgnOUT;
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while (numRects && pBox->y2 <= y)
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{
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--numRects;
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++pBox;
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}
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if (!numRects || pBox->y1 >= y + h)
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return rgnOUT;
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yBand = pBox->y1;
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while (numRects && pBox->y1 == yBand && pBox->x2 <= x)
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{
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--numRects;
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++pBox;
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}
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if (!numRects || pBox->y1 >= y + h)
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return rgnOUT;
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if (numRects &&
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x >= pBox->x1 &&
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x + w <= pBox->x2 &&
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y >= pBox->y1 &&
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y + h <= pBox->y2)
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{
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return rgnIN;
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}
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ch = 0;
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while (numRects && pBox->y1 < y + h)
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{
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yBand = pBox->y1;
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yBandBot = pBox->y2;
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while (ch < h && y + ch < yBand)
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{
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partOUT = TRUE;
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clips[ch++] = 0;
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}
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if (ch >= h)
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break;
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while (numRects && pBox->y1 == yBand && pBox->x2 <= x)
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{
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--numRects;
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++pBox;
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}
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if (!numRects)
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break;
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clip = 0;
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while (numRects && pBox->y1 == yBand && pBox->x1 < x + w)
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{
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if (x < pBox->x1)
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if (pBox->x2 < x + w)
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clip |= cfb8BitLenMasks[pBox->x1 - x] & ~cfb8BitLenMasks[pBox->x2 - x];
|
|
else
|
|
clip |= cfb8BitLenMasks[pBox->x1 - x];
|
|
else
|
|
if (pBox->x2 < x + w)
|
|
clip |= ~cfb8BitLenMasks[pBox->x2 - x];
|
|
else
|
|
clip = ~0;
|
|
--numRects;
|
|
++pBox;
|
|
}
|
|
if (clip != 0)
|
|
partIN = TRUE;
|
|
if (clip != ~0)
|
|
partOUT = TRUE;
|
|
while (ch < h && y + ch < yBandBot)
|
|
clips[ch++] = clip;
|
|
while (numRects && pBox->y1 == yBand)
|
|
{
|
|
--numRects;
|
|
++pBox;
|
|
}
|
|
}
|
|
while (ch < h)
|
|
{
|
|
partOUT = TRUE;
|
|
clips[ch++] = 0;
|
|
}
|
|
result = rgnOUT;
|
|
if (partIN)
|
|
{
|
|
if (partOUT)
|
|
result = rgnPART;
|
|
else
|
|
result = rgnIN;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
#endif /* PSZ == 8 */
|