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Diffstat (limited to 'cfb/cfb8bit.c')
| -rw-r--r-- | cfb/cfb8bit.c | 466 |
1 files changed, 466 insertions, 0 deletions
diff --git a/cfb/cfb8bit.c b/cfb/cfb8bit.c new file mode 100644 index 000000000..080970e70 --- /dev/null +++ b/cfb/cfb8bit.c @@ -0,0 +1,466 @@ +/* $Xorg: cfb8bit.c,v 1.4 2001/02/09 02:04:37 xorgcvs Exp $ */ +/* + +Copyright 1989, 1994, 1998 The Open Group + +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. + +The above copyright notice and this permission notice 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 NONINFRINGEMENT. +IN NO EVENT SHALL THE OPEN GROUP 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. + +Except as contained in this notice, the name of The Open Group shall +not be used in advertising or otherwise to promote the sale, use or +other dealings in this Software without prior written authorization +from The Open Group. + +*/ + +/* + * cfb8bit.c + * + * 8 bit color frame buffer utility routines + */ + + +#if PSZ == 8 + +#include "X.h" +#include "Xmd.h" +#include "Xproto.h" +#include "gcstruct.h" +#include "windowstr.h" +#include "scrnintstr.h" +#include "pixmapstr.h" +#include "regionstr.h" +#include "cfb.h" +#include "cfbmskbits.h" +#include "cfb8bit.h" + +PixelGroup cfb8StippleMasks[NUM_MASKS] = { +#if NUM_MASKS == 16 + 0x00000000, 0x000000ff, 0x0000ff00, 0x0000ffff, + 0x00ff0000, 0x00ff00ff, 0x00ffff00, 0x00ffffff, + 0xff000000, 0xff0000ff, 0xff00ff00, 0xff00ffff, + 0xffff0000, 0xffff00ff, 0xffffff00, 0xffffffff +#else /* NUM_MASKS == 256 */ + 0x0000000000000000, 0x00000000000000ff, + 0x000000000000ff00, 0x000000000000ffff, + 0x0000000000ff0000, 0x0000000000ff00ff, + 0x0000000000ffff00, 0x0000000000ffffff, + 0x00000000ff000000, 0x00000000ff0000ff, + 0x00000000ff00ff00, 0x00000000ff00ffff, + 0x00000000ffff0000, 0x00000000ffff00ff, + 0x00000000ffffff00, 0x00000000ffffffff, + 0x000000ff00000000, 0x000000ff000000ff, + 0x000000ff0000ff00, 0x000000ff0000ffff, + 0x000000ff00ff0000, 0x000000ff00ff00ff, + 0x000000ff00ffff00, 0x000000ff00ffffff, + 0x000000ffff000000, 0x000000ffff0000ff, + 0x000000ffff00ff00, 0x000000ffff00ffff, + 0x000000ffffff0000, 0x000000ffffff00ff, + 0x000000ffffffff00, 0x000000ffffffffff, + 0x0000ff0000000000, 0x0000ff00000000ff, + 0x0000ff000000ff00, 0x0000ff000000ffff, + 0x0000ff0000ff0000, 0x0000ff0000ff00ff, + 0x0000ff0000ffff00, 0x0000ff0000ffffff, + 0x0000ff00ff000000, 0x0000ff00ff0000ff, + 0x0000ff00ff00ff00, 0x0000ff00ff00ffff, + 0x0000ff00ffff0000, 0x0000ff00ffff00ff, + 0x0000ff00ffffff00, 0x0000ff00ffffffff, + 0x0000ffff00000000, 0x0000ffff000000ff, + 0x0000ffff0000ff00, 0x0000ffff0000ffff, + 0x0000ffff00ff0000, 0x0000ffff00ff00ff, + 0x0000ffff00ffff00, 0x0000ffff00ffffff, + 0x0000ffffff000000, 0x0000ffffff0000ff, + 0x0000ffffff00ff00, 0x0000ffffff00ffff, + 0x0000ffffffff0000, 0x0000ffffffff00ff, + 0x0000ffffffffff00, 0x0000ffffffffffff, + 0x00ff000000000000, 0x00ff0000000000ff, + 0x00ff00000000ff00, 0x00ff00000000ffff, + 0x00ff000000ff0000, 0x00ff000000ff00ff, + 0x00ff000000ffff00, 0x00ff000000ffffff, + 0x00ff0000ff000000, 0x00ff0000ff0000ff, + 0x00ff0000ff00ff00, 0x00ff0000ff00ffff, + 0x00ff0000ffff0000, 0x00ff0000ffff00ff, + 0x00ff0000ffffff00, 0x00ff0000ffffffff, + 0x00ff00ff00000000, 0x00ff00ff000000ff, + 0x00ff00ff0000ff00, 0x00ff00ff0000ffff, + 0x00ff00ff00ff0000, 0x00ff00ff00ff00ff, + 0x00ff00ff00ffff00, 0x00ff00ff00ffffff, + 0x00ff00ffff000000, 0x00ff00ffff0000ff, + 0x00ff00ffff00ff00, 0x00ff00ffff00ffff, + 0x00ff00ffffff0000, 0x00ff00ffffff00ff, + 0x00ff00ffffffff00, 0x00ff00ffffffffff, + 0x00ffff0000000000, 0x00ffff00000000ff, + 0x00ffff000000ff00, 0x00ffff000000ffff, + 0x00ffff0000ff0000, 0x00ffff0000ff00ff, + 0x00ffff0000ffff00, 0x00ffff0000ffffff, + 0x00ffff00ff000000, 0x00ffff00ff0000ff, + 0x00ffff00ff00ff00, 0x00ffff00ff00ffff, + 0x00ffff00ffff0000, 0x00ffff00ffff00ff, + 0x00ffff00ffffff00, 0x00ffff00ffffffff, + 0x00ffffff00000000, 0x00ffffff000000ff, + 0x00ffffff0000ff00, 0x00ffffff0000ffff, + 0x00ffffff00ff0000, 0x00ffffff00ff00ff, + 0x00ffffff00ffff00, 0x00ffffff00ffffff, + 0x00ffffffff000000, 0x00ffffffff0000ff, + 0x00ffffffff00ff00, 0x00ffffffff00ffff, + 0x00ffffffffff0000, 0x00ffffffffff00ff, + 0x00ffffffffffff00, 0x00ffffffffffffff, + 0xff00000000000000, 0xff000000000000ff, + 0xff0000000000ff00, 0xff0000000000ffff, + 0xff00000000ff0000, 0xff00000000ff00ff, + 0xff00000000ffff00, 0xff00000000ffffff, + 0xff000000ff000000, 0xff000000ff0000ff, + 0xff000000ff00ff00, 0xff000000ff00ffff, + 0xff000000ffff0000, 0xff000000ffff00ff, + 0xff000000ffffff00, 0xff000000ffffffff, + 0xff0000ff00000000, 0xff0000ff000000ff, + 0xff0000ff0000ff00, 0xff0000ff0000ffff, + 0xff0000ff00ff0000, 0xff0000ff00ff00ff, + 0xff0000ff00ffff00, 0xff0000ff00ffffff, + 0xff0000ffff000000, 0xff0000ffff0000ff, + 0xff0000ffff00ff00, 0xff0000ffff00ffff, + 0xff0000ffffff0000, 0xff0000ffffff00ff, + 0xff0000ffffffff00, 0xff0000ffffffffff, + 0xff00ff0000000000, 0xff00ff00000000ff, + 0xff00ff000000ff00, 0xff00ff000000ffff, + 0xff00ff0000ff0000, 0xff00ff0000ff00ff, + 0xff00ff0000ffff00, 0xff00ff0000ffffff, + 0xff00ff00ff000000, 0xff00ff00ff0000ff, + 0xff00ff00ff00ff00, 0xff00ff00ff00ffff, + 0xff00ff00ffff0000, 0xff00ff00ffff00ff, + 0xff00ff00ffffff00, 0xff00ff00ffffffff, + 0xff00ffff00000000, 0xff00ffff000000ff, + 0xff00ffff0000ff00, 0xff00ffff0000ffff, + 0xff00ffff00ff0000, 0xff00ffff00ff00ff, + 0xff00ffff00ffff00, 0xff00ffff00ffffff, + 0xff00ffffff000000, 0xff00ffffff0000ff, + 0xff00ffffff00ff00, 0xff00ffffff00ffff, + 0xff00ffffffff0000, 0xff00ffffffff00ff, + 0xff00ffffffffff00, 0xff00ffffffffffff, + 0xffff000000000000, 0xffff0000000000ff, + 0xffff00000000ff00, 0xffff00000000ffff, + 0xffff000000ff0000, 0xffff000000ff00ff, + 0xffff000000ffff00, 0xffff000000ffffff, + 0xffff0000ff000000, 0xffff0000ff0000ff, + 0xffff0000ff00ff00, 0xffff0000ff00ffff, + 0xffff0000ffff0000, 0xffff0000ffff00ff, + 0xffff0000ffffff00, 0xffff0000ffffffff, + 0xffff00ff00000000, 0xffff00ff000000ff, + 0xffff00ff0000ff00, 0xffff00ff0000ffff, + 0xffff00ff00ff0000, 0xffff00ff00ff00ff, + 0xffff00ff00ffff00, 0xffff00ff00ffffff, + 0xffff00ffff000000, 0xffff00ffff0000ff, + 0xffff00ffff00ff00, 0xffff00ffff00ffff, + 0xffff00ffffff0000, 0xffff00ffffff00ff, + 0xffff00ffffffff00, 0xffff00ffffffffff, + 0xffffff0000000000, 0xffffff00000000ff, + 0xffffff000000ff00, 0xffffff000000ffff, + 0xffffff0000ff0000, 0xffffff0000ff00ff, + 0xffffff0000ffff00, 0xffffff0000ffffff, + 0xffffff00ff000000, 0xffffff00ff0000ff, + 0xffffff00ff00ff00, 0xffffff00ff00ffff, + 0xffffff00ffff0000, 0xffffff00ffff00ff, + 0xffffff00ffffff00, 0xffffff00ffffffff, + 0xffffffff00000000, 0xffffffff000000ff, + 0xffffffff0000ff00, 0xffffffff0000ffff, + 0xffffffff00ff0000, 0xffffffff00ff00ff, + 0xffffffff00ffff00, 0xffffffff00ffffff, + 0xffffffffff000000, 0xffffffffff0000ff, + 0xffffffffff00ff00, 0xffffffffff00ffff, + 0xffffffffffff0000, 0xffffffffffff00ff, + 0xffffffffffffff00, 0xffffffffffffffff +#endif +}; + +int cfb8StippleMode, cfb8StippleAlu, cfb8StippleRRop; +PixelGroup cfb8StippleFg, cfb8StippleBg, cfb8StipplePm; +PixelGroup cfb8StippleAnd[NUM_MASKS], cfb8StippleXor[NUM_MASKS]; + +int +cfb8SetStipple (alu, fg, planemask) +int alu; +unsigned long fg, planemask; +{ + unsigned long and, xor, rrop; + int s; + unsigned long c; + + cfb8StippleMode = FillStippled; + cfb8StippleAlu = alu; + cfb8StippleFg = fg & PMSK; + cfb8StipplePm = planemask & PMSK; + rrop = cfbReduceRasterOp (alu, fg, planemask, &and, &xor); + cfb8StippleRRop = rrop; + /* + * create the appropriate pixel-fill bits for current + * foreground + */ + for (s = 0; s < NUM_MASKS; s++) + { + c = cfb8StippleMasks[s]; + cfb8StippleAnd[s] = and | ~c; + cfb8StippleXor[s] = xor & c; + } + return TRUE; +} + + +int +cfb8SetOpaqueStipple (alu, fg, bg, planemask) +int alu; +unsigned long fg, bg, planemask; +{ + unsigned long andfg, xorfg, andbg, xorbg, rropfg, rropbg; + int s; + unsigned long c; + + cfb8StippleMode = FillOpaqueStippled; + cfb8StippleAlu = alu; + cfb8StippleFg = fg & PMSK; + cfb8StippleBg = bg & PMSK; + cfb8StipplePm = planemask & PMSK; + rropfg = cfbReduceRasterOp (alu, cfb8StippleFg, cfb8StipplePm, &andfg, &xorfg); + rropbg = cfbReduceRasterOp (alu, cfb8StippleBg, cfb8StipplePm, &andbg, &xorbg); + if (rropfg == rropbg) + cfb8StippleRRop = rropfg; + else + cfb8StippleRRop = GXset; + /* + * create the appropriate pixel-fill bits for current + * foreground + */ + for (s = 0; s < NUM_MASKS; s++) + { + c = cfb8StippleMasks[s]; + cfb8StippleAnd[s] = (andfg | ~c) & (andbg | c); + cfb8StippleXor[s] = (xorfg & c) | (xorbg & ~c); + } + return TRUE; +} + +/* + * a grungy little routine. This computes clip masks + * for partial character blts. Returns rgnOUT if the + * entire character is clipped; returns rgnIN if the entire + * character is unclipped; returns rgnPART if a portion of + * the character is visible. Computes clip masks for each + * longword of the character -- and those with the + * contents of the glyph to compute the visible bits. + */ + +#if PGSZ == 32 +#if (BITMAP_BIT_ORDER == MSBFirst) +PixelGroup cfb8BitLenMasks[PGSZ] = { + 0xffffffff, 0x7fffffff, 0x3fffffff, 0x1fffffff, + 0x0fffffff, 0x07ffffff, 0x03ffffff, 0x01ffffff, + 0x00ffffff, 0x007fffff, 0x003fffff, 0x001fffff, + 0x000fffff, 0x0007ffff, 0x0003ffff, 0x0001ffff, + 0x0000ffff, 0x00007fff, 0x00003fff, 0x00001fff, + 0x00000fff, 0x000007ff, 0x000003ff, 0x000001ff, + 0x000000ff, 0x0000007f, 0x0000003f, 0x0000001f, + 0x0000000f, 0x00000007, 0x00000003, 0x00000001, +}; +#else +PixelGroup cfb8BitLenMasks[PGSZ] = { + 0xffffffff, 0xfffffffe, 0xfffffffc, 0xfffffff8, + 0xfffffff0, 0xffffffe0, 0xffffffc0, 0xffffff80, + 0xffffff00, 0xfffffe00, 0xfffffc00, 0xfffff800, + 0xfffff000, 0xffffe000, 0xffffc000, 0xffff8000, + 0xffff0000, 0xfffe0000, 0xfffc0000, 0xfff80000, + 0xfff00000, 0xffe00000, 0xffc00000, 0xff800000, + 0xff000000, 0xfe000000, 0xfc000000, 0xf8000000, + 0xf0000000, 0xe0000000, 0xc0000000, 0x80000000, +}; +#endif /* BITMAP_BIT_ORDER */ +#else /* PGSZ == 64 */ +#if (BITMAP_BIT_ORDER == MSBFirst) +PixelGroup cfb8BitLenMasks[PGSZ] = { + 0xffffffffffffffff, 0x7fffffffffffffff, + 0x3fffffffffffffff, 0x1fffffffffffffff, + 0x0fffffffffffffff, 0x07ffffffffffffff, + 0x03ffffffffffffff, 0x01ffffffffffffff, + 0x00ffffffffffffff, 0x007fffffffffffff, + 0x003fffffffffffff, 0x001fffffffffffff, + 0x000fffffffffffff, 0x0007ffffffffffff, + 0x0003ffffffffffff, 0x0001ffffffffffff, + 0x0000ffffffffffff, 0x00007fffffffffff, + 0x00003fffffffffff, 0x00001fffffffffff, + 0x00000fffffffffff, 0x000007ffffffffff, + 0x000003ffffffffff, 0x000001ffffffffff, + 0x000000ffffffffff, 0x0000007fffffffff, + 0x0000003fffffffff, 0x0000001fffffffff, + 0x0000000fffffffff, 0x00000007ffffffff, + 0x00000003ffffffff, 0x00000001ffffffff, + 0x00000000ffffffff, 0x000000007fffffff, + 0x000000003fffffff, 0x000000001fffffff, + 0x000000000fffffff, 0x0000000007ffffff, + 0x0000000003ffffff, 0x0000000001ffffff, + 0x0000000000ffffff, 0x00000000007fffff, + 0x00000000003fffff, 0x00000000001fffff, + 0x00000000000fffff, 0x000000000007ffff, + 0x000000000003ffff, 0x000000000001ffff, + 0x000000000000ffff, 0x0000000000007fff, + 0x0000000000003fff, 0x0000000000001fff, + 0x0000000000000fff, 0x00000000000007ff, + 0x00000000000003ff, 0x00000000000001ff, + 0x00000000000000ff, 0x000000000000007f, + 0x000000000000003f, 0x000000000000001f, + 0x000000000000000f, 0x0000000000000007, + 0x0000000000000003, 0x0000000000000001 +}; +#else +PixelGroup cfb8BitLenMasks[PGSZ] = { + 0xffffffffffffffff, 0xfffffffffffffffe, + 0xfffffffffffffffc, 0xfffffffffffffff8, + 0xfffffffffffffff0, 0xffffffffffffffe0, + 0xffffffffffffffc0, 0xffffffffffffff80, + 0xffffffffffffff00, 0xfffffffffffffe00, + 0xfffffffffffffc00, 0xfffffffffffff800, + 0xfffffffffffff000, 0xffffffffffffe000, + 0xffffffffffffc000, 0xffffffffffff8000, + 0xffffffffffff0000, 0xfffffffffffe0000, + 0xfffffffffffc0000, 0xfffffffffff80000, + 0xfffffffffff00000, 0xffffffffffe00000, + 0xffffffffffc00000, 0xffffffffff800000, + 0xffffffffff000000, 0xfffffffffe000000, + 0xfffffffffc000000, 0xfffffffff8000000, + 0xfffffffff0000000, 0xffffffffe0000000, + 0xffffffffc0000000, 0xffffffff80000000, + 0xffffffff00000000, 0xfffffffe00000000, + 0xfffffffc00000000, 0xfffffff800000000, + 0xfffffff000000000, 0xffffffe000000000, + 0xffffffc000000000, 0xffffff8000000000, + 0xffffff0000000000, 0xfffffe0000000000, + 0xfffffc0000000000, 0xfffff80000000000, + 0xfffff00000000000, 0xffffe00000000000, + 0xffffc00000000000, 0xffff800000000000, + 0xffff000000000000, 0xfffe000000000000, + 0xfffc000000000000, 0xfff8000000000000, + 0xfff0000000000000, 0xffe0000000000000, + 0xffc0000000000000, 0xff80000000000000, + 0xff00000000000000, 0xfe00000000000000, + 0xfc00000000000000, 0xf800000000000000, + 0xf000000000000000, 0xe000000000000000, + 0xc000000000000000, 0x8000000000000000 +}; +#endif /* BITMAP_BIT_ORDER */ +#endif /* PGSZ */ + + + +int +cfb8ComputeClipMasks32 (pBox, numRects, x, y, w, h, clips) + BoxPtr pBox; + int numRects; + int x, y, w, h; + CARD32 *clips; +{ + int yBand, yBandBot; + int ch; + unsigned long clip; + int partIN = FALSE, partOUT = FALSE; + int result; + + if (numRects == 0) + return rgnOUT; + while (numRects && pBox->y2 <= y) + { + --numRects; + ++pBox; + } + if (!numRects || pBox->y1 >= y + h) + return rgnOUT; + yBand = pBox->y1; + while (numRects && pBox->y1 == yBand && pBox->x2 <= x) + { + --numRects; + ++pBox; + } + if (!numRects || pBox->y1 >= y + h) + return rgnOUT; + if (numRects && + x >= pBox->x1 && + x + w <= pBox->x2 && + y >= pBox->y1 && + y + h <= pBox->y2) + { + return rgnIN; + } + ch = 0; + while (numRects && pBox->y1 < y + h) + { + yBand = pBox->y1; + yBandBot = pBox->y2; + while (ch < h && y + ch < yBand) + { + partOUT = TRUE; + clips[ch++] = 0; + } + if (ch >= h) + break; + while (numRects && pBox->y1 == yBand && pBox->x2 <= x) + { + --numRects; + ++pBox; + } + if (!numRects) + break; + clip = 0; + while (numRects && pBox->y1 == yBand && pBox->x1 < x + w) + { + if (x < pBox->x1) + if (pBox->x2 < x + w) + 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 */ |