diff options
Diffstat (limited to 'xorg-server/fb/fbrop.h')
| -rw-r--r-- | xorg-server/fb/fbrop.h | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/xorg-server/fb/fbrop.h b/xorg-server/fb/fbrop.h new file mode 100644 index 000000000..1685ee836 --- /dev/null +++ b/xorg-server/fb/fbrop.h @@ -0,0 +1,136 @@ +/* + * Copyright © 1998 Keith Packard + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of Keith Packard not be used in + * advertising or publicity pertaining to distribution of the software without + * specific, written prior permission. Keith Packard makes no + * representations about the suitability of this software for any purpose. It + * is provided "as is" without express or implied warranty. + * + * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + * PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef _FBROP_H_ +#define _FBROP_H_ + +typedef struct _mergeRopBits { + FbBits ca1, cx1, ca2, cx2; +} FbMergeRopRec, *FbMergeRopPtr; + +extern const FbMergeRopRec FbMergeRopBits[16]; + +#define FbDeclareMergeRop() FbBits _ca1, _cx1, _ca2, _cx2; +#define FbDeclarePrebuiltMergeRop() FbBits _cca, _ccx; + +#define FbInitializeMergeRop(alu,pm) {\ + const FbMergeRopRec *_bits; \ + _bits = &FbMergeRopBits[alu]; \ + _ca1 = _bits->ca1 & pm; \ + _cx1 = _bits->cx1 | ~pm; \ + _ca2 = _bits->ca2 & pm; \ + _cx2 = _bits->cx2 & pm; \ +} + +#define FbDestInvarientRop(alu,pm) ((pm) == FB_ALLONES && \ + (((alu) >> 1 & 5) == ((alu) & 5))) + +#define FbDestInvarientMergeRop() (_ca1 == 0 && _cx1 == 0) + +/* AND has higher precedence than XOR */ + +#define FbDoMergeRop(src, dst) \ + (((dst) & (((src) & _ca1) ^ _cx1)) ^ (((src) & _ca2) ^ _cx2)) + +#define FbDoDestInvarientMergeRop(src) (((src) & _ca2) ^ _cx2) + +#define FbDoMaskMergeRop(src, dst, mask) \ + (((dst) & ((((src) & _ca1) ^ _cx1) | ~(mask))) ^ ((((src) & _ca2) ^ _cx2) & (mask))) + +#define FbDoLeftMaskByteMergeRop(dst, src, lb, l) { \ + FbBits __xor = ((src) & _ca2) ^ _cx2; \ + FbDoLeftMaskByteRRop(dst,lb,l,((src) & _ca1) ^ _cx1,__xor); \ +} + +#define FbDoRightMaskByteMergeRop(dst, src, rb, r) { \ + FbBits __xor = ((src) & _ca2) ^ _cx2; \ + FbDoRightMaskByteRRop(dst,rb,r,((src) & _ca1) ^ _cx1,__xor); \ +} + +#define FbDoRRop(dst, and, xor) (((dst) & (and)) ^ (xor)) + +#define FbDoMaskRRop(dst, and, xor, mask) \ + (((dst) & ((and) | ~(mask))) ^ (xor & mask)) + +/* + * Take a single bit (0 or 1) and generate a full mask + */ +#define fbFillFromBit(b,t) (~((t) ((b) & 1)-1)) + +#define fbXorT(rop,fg,pm,t) ((((fg) & fbFillFromBit((rop) >> 1,t)) | \ + (~(fg) & fbFillFromBit((rop) >> 3,t))) & (pm)) + +#define fbAndT(rop,fg,pm,t) ((((fg) & fbFillFromBit (rop ^ (rop>>1),t)) | \ + (~(fg) & fbFillFromBit((rop>>2) ^ (rop>>3),t))) | \ + ~(pm)) + +#define fbXor(rop,fg,pm) fbXorT(rop,fg,pm,FbBits) + +#define fbAnd(rop,fg,pm) fbAndT(rop,fg,pm,FbBits) + +#define fbXorStip(rop,fg,pm) fbXorT(rop,fg,pm,FbStip) + +#define fbAndStip(rop,fg,pm) fbAndT(rop,fg,pm,FbStip) + +/* + * Stippling operations; + */ + +extern const FbBits fbStipple16Bits[256]; /* half of table */ +#define FbStipple16Bits(b) \ + (fbStipple16Bits[(b)&0xff] | fbStipple16Bits[(b) >> 8] << FB_HALFUNIT) +extern const FbBits fbStipple8Bits[256]; +extern const FbBits fbStipple4Bits[16]; +extern const FbBits fbStipple2Bits[4]; +extern const FbBits fbStipple1Bits[2]; +extern const FbBits *const fbStippleTable[]; + +#define FbStippleRRop(dst, b, fa, fx, ba, bx) \ + (FbDoRRop(dst, fa, fx) & b) | (FbDoRRop(dst, ba, bx) & ~b) + +#define FbStippleRRopMask(dst, b, fa, fx, ba, bx, m) \ + (FbDoMaskRRop(dst, fa, fx, m) & (b)) | (FbDoMaskRRop(dst, ba, bx, m) & ~(b)) + +#define FbDoLeftMaskByteStippleRRop(dst, b, fa, fx, ba, bx, lb, l) { \ + FbBits __xor = ((fx) & (b)) | ((bx) & ~(b)); \ + FbDoLeftMaskByteRRop(dst, lb, l, ((fa) & (b)) | ((ba) & ~(b)), __xor); \ +} + +#define FbDoRightMaskByteStippleRRop(dst, b, fa, fx, ba, bx, rb, r) { \ + FbBits __xor = ((fx) & (b)) | ((bx) & ~(b)); \ + FbDoRightMaskByteRRop(dst, rb, r, ((fa) & (b)) | ((ba) & ~(b)), __xor); \ +} + +#define FbOpaqueStipple(b, fg, bg) (((fg) & (b)) | ((bg) & ~(b))) + +/* + * Compute rop for using tile code for 1-bit dest stipples; modifies + * existing rop to flip depending on pixel values + */ +#define FbStipple1RopPick(alu,b) (((alu) >> (2 - (((b) & 1) << 1))) & 3) + +#define FbOpaqueStipple1Rop(alu,fg,bg) (FbStipple1RopPick(alu,fg) | \ + (FbStipple1RopPick(alu,bg) << 2)) + +#define FbStipple1Rop(alu,fg) (FbStipple1RopPick(alu,fg) | 4) + +#endif |