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IABSD.fr/xenocara/xserver/cfb/cfb8bit.c
matthieu
- xserver/cfb/cfb8bit.c
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/* 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 */ #ifdef HAVE_DIX_CONFIG_H #include <dix-config.h> #endif #if PSZ == 8 #include <X11/X.h> #include <X11/Xmd.h> #include <X11/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; CfbBits fg, planemask; { CfbBits and, xor, rrop; int s; CfbBits 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; CfbBits fg, bg, planemask; { CfbBits andfg, xorfg, andbg, xorbg, rropfg, rropbg; int s; CfbBits 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; CfbBits 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 */