sh3224.c (3993B)
1 /* 2 * Copyright © 2000 Keith Packard 3 * 4 * Permission to use, copy, modify, distribute, and sell this software and its 5 * documentation for any purpose is hereby granted without fee, provided that 6 * the above copyright notice appear in all copies and that both that 7 * copyright notice and this permission notice appear in supporting 8 * documentation, and that the name of Keith Packard not be used in 9 * advertising or publicity pertaining to distribution of the software without 10 * specific, written prior permission. Keith Packard makes no 11 * representations about the suitability of this software for any purpose. It 12 * is provided "as is" without express or implied warranty. 13 * 14 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 16 * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR 17 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, 18 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 19 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 20 * PERFORMANCE OF THIS SOFTWARE. 21 */ 22 23 #ifdef HAVE_DIX_CONFIG_H 24 #include "dix-config.h" 25 #endif 26 27 #include "shadow.h" 28 #include "fb.h" 29 30 #define Get8(a) ((CARD32) READ(a)) 31 32 #if BITMAP_BIT_ORDER == MSBFirst 33 #define Get24(a) ((Get8(a) << 16) | (Get8((a)+1) << 8) | Get8((a)+2)) 34 #define Put24(a,p) ((WRITE((a+0), (CARD8) ((p) >> 16))), \ 35 (WRITE((a+1), (CARD8) ((p) >> 8))), \ 36 (WRITE((a+2), (CARD8) (p)))) 37 #else 38 #define Get24(a) (Get8(a) | (Get8((a)+1) << 8) | (Get8((a)+2)<<16)) 39 #define Put24(a,p) ((WRITE((a+0), (CARD8) (p))), \ 40 (WRITE((a+1), (CARD8) ((p) >> 8))), \ 41 (WRITE((a+2), (CARD8) ((p) >> 16)))) 42 #endif 43 44 static void 45 sh24_32BltLine(CARD8 *srcLine, 46 CARD8 *dstLine, 47 int width) 48 { 49 CARD32 *src; 50 CARD8 *dst; 51 int w; 52 CARD32 pixel; 53 54 src = (CARD32 *) srcLine; 55 dst = dstLine; 56 w = width; 57 58 while (((long)dst & 3) && w) { 59 w--; 60 pixel = READ(src++); 61 Put24(dst, pixel); 62 dst += 3; 63 } 64 /* Do four aligned pixels at a time */ 65 while (w >= 4) { 66 CARD32 s0, s1; 67 68 s0 = READ(src++); 69 s1 = READ(src++); 70 #if BITMAP_BIT_ORDER == LSBFirst 71 WRITE((CARD32 *) dst, (s0 & 0xffffff) | (s1 << 24)); 72 #else 73 WRITE((CARD32 *) dst, (s0 << 8) | ((s1 & 0xffffff) >> 16)); 74 #endif 75 s0 = READ(src++); 76 #if BITMAP_BIT_ORDER == LSBFirst 77 WRITE((CARD32 *) (dst + 4), 78 ((s1 & 0xffffff) >> 8) | (s0 << 16)); 79 #else 80 WRITE((CARD32 *) (dst + 4), 81 (s1 << 16) | ((s0 & 0xffffff) >> 8)); 82 #endif 83 s1 = READ(src++); 84 #if BITMAP_BIT_ORDER == LSBFirst 85 WRITE((CARD32 *) (dst + 8), 86 ((s0 & 0xffffff) >> 16) | (s1 << 8)); 87 #else 88 WRITE((CARD32 *) (dst + 8), (s0 << 24) | (s1 & 0xffffff)); 89 #endif 90 dst += 12; 91 w -= 4; 92 } 93 while (w--) { 94 pixel = READ(src++); 95 Put24(dst, pixel); 96 dst += 3; 97 } 98 } 99 100 void 101 shadowUpdate32to24(ScreenPtr pScreen, shadowBufPtr pBuf) 102 { 103 RegionPtr damage = DamageRegion(pBuf->pDamage); 104 PixmapPtr pShadow = pBuf->pPixmap; 105 int nbox = RegionNumRects(damage); 106 BoxPtr pbox = RegionRects(damage); 107 FbStride shaStride; 108 int shaBpp; 109 _X_UNUSED int shaXoff, shaYoff; 110 int x, y, w, h; 111 CARD32 winSize; 112 FbBits *shaBase, *shaLine; 113 CARD8 *winBase = NULL, *winLine; 114 115 fbGetDrawable(&pShadow->drawable, shaBase, shaStride, shaBpp, shaXoff, 116 shaYoff); 117 118 /* just get the initial window base + stride */ 119 winBase = (*pBuf->window)(pScreen, 0, 0, SHADOW_WINDOW_WRITE, 120 &winSize, pBuf->closure); 121 122 while (nbox--) { 123 x = pbox->x1; 124 y = pbox->y1; 125 w = pbox->x2 - pbox->x1; 126 h = pbox->y2 - pbox->y1; 127 128 winLine = winBase + y * winSize + (x * 3); 129 shaLine = shaBase + y * shaStride + ((x * shaBpp) >> FB_SHIFT); 130 131 while (h--) { 132 sh24_32BltLine((CARD8 *)shaLine, (CARD8 *)winLine, w); 133 winLine += winSize; 134 shaLine += shaStride; 135 } 136 pbox++; 137 } 138 }