/* $XConsortium: cfb8bit.c,v 1.12 94/04/17 20:28:39 dpw Exp $ */ /* Copyright (c) 1989, 1994 X Consortium 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 the rights to use, copy, modify, merge, publish, distribute, sublicense, 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 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 X CONSORTIUM 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 X Consortium 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 X Consortium. */ /* * 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; } } 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); } } /* * 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 */