| 1 | /** @file
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| 2 | *
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| 3 | * VirtualBox Windows NT/2000/XP guest video driver
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| 4 | *
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| 5 | * VBVA dirty rectangles calculations.
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| 6 | *
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| 7 | * Copyright (C) 2006-2007 innotek GmbH
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 | #include "driver.h"
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| 19 |
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| 20 | #ifdef VBOX_VBVA_ADJUST_RECT
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| 21 | static ULONG vbvaConvertPixel ( /*from*/ BYTE *pu8PixelFrom, int cbPixelFrom,
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| 22 | /*to*/ int cbPixelTo)
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| 23 | {
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| 24 | BYTE r, g, b;
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| 25 | ULONG ulConvertedPixel = 0;
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| 26 |
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| 27 | switch (cbPixelFrom)
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| 28 | {
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| 29 | case 4:
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| 30 | {
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| 31 | switch (cbPixelTo)
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| 32 | {
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| 33 | case 3:
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| 34 | {
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| 35 | memcpy (&ulConvertedPixel, pu8PixelFrom, 3);
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| 36 | } break;
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| 37 |
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| 38 | case 2:
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| 39 | {
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| 40 | ulConvertedPixel = *(ULONG *)pu8PixelFrom;
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| 41 |
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| 42 | r = (BYTE)(ulConvertedPixel >> 16);
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| 43 | g = (BYTE)(ulConvertedPixel >> 8);
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| 44 | b = (BYTE)(ulConvertedPixel);
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| 45 |
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| 46 | ulConvertedPixel = ((r >> 3) << 11) + ((g >> 2) << 5) + (b >> 3);
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| 47 | } break;
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| 48 | }
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| 49 | } break;
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| 50 |
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| 51 | case 3:
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| 52 | {
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| 53 | switch (cbPixelTo)
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| 54 | {
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| 55 | case 2:
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| 56 | {
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| 57 | memcpy (&ulConvertedPixel, pu8PixelFrom, 3);
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| 58 |
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| 59 | r = (BYTE)(ulConvertedPixel >> 16);
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| 60 | g = (BYTE)(ulConvertedPixel >> 8);
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| 61 | b = (BYTE)(ulConvertedPixel);
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| 62 |
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| 63 | ulConvertedPixel = ((r >> 3) << 11) + ((g >> 2) << 5) + (b >> 3);
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| 64 | } break;
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| 65 | }
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| 66 | } break;
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| 67 | }
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| 68 |
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| 69 | return ulConvertedPixel;
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| 70 | }
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| 71 |
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| 72 | BOOL vbvaFindChangedRect (SURFOBJ *psoDest, SURFOBJ *psoSrc, RECTL *prclDest, POINTL *pptlSrc)
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| 73 | {
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| 74 | int x, y;
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| 75 | int fTopNonEqualFound;
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| 76 | int yTopmost;
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| 77 | int yBottommost;
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| 78 | int cbPixelSrc;
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| 79 | int cbPixelDest;
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| 80 | RECTL rclDest;
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| 81 | RECTL rclSrc;
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| 82 | BYTE *pu8Src;
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| 83 | BYTE *pu8Dest;
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| 84 |
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| 85 | if (!prclDest || !pptlSrc)
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| 86 | {
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| 87 | return TRUE;
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| 88 | }
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| 89 |
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| 90 | DISPDBG((1, "vbvaFindChangedRect: dest %d,%d %dx%d from %d,%d\n",
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| 91 | prclDest->left, prclDest->top, prclDest->right - prclDest->left, prclDest->bottom - prclDest->top,
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| 92 | pptlSrc->x, pptlSrc->y
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| 93 | ));
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| 94 |
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| 95 | switch (psoDest->iBitmapFormat)
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| 96 | {
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| 97 | case BMF_16BPP: cbPixelDest = 2; break;
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| 98 | case BMF_24BPP: cbPixelDest = 3; break;
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| 99 | case BMF_32BPP: cbPixelDest = 4; break;
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| 100 | default: cbPixelDest = 0;
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| 101 | }
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| 102 |
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| 103 | switch (psoSrc->iBitmapFormat)
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| 104 | {
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| 105 | case BMF_16BPP: cbPixelSrc = 2; break;
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| 106 | case BMF_24BPP: cbPixelSrc = 3; break;
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| 107 | case BMF_32BPP: cbPixelSrc = 4; break;
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| 108 | default: cbPixelSrc = 0;
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| 109 | }
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| 110 |
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| 111 | if (cbPixelDest == 0 || cbPixelSrc == 0)
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| 112 | {
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| 113 | DISPDBG((1, "vbvaFindChangedRect: unsupported pixel format src %d dst %d\n", psoDest->iBitmapFormat, psoSrc->iBitmapFormat));
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| 114 | return TRUE;
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| 115 | }
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| 116 |
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| 117 | rclDest = *prclDest;
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| 118 |
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| 119 | vrdpAdjustRect (psoDest, &rclDest);
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| 120 |
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| 121 | pptlSrc->x += rclDest.left - prclDest->left;
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| 122 | pptlSrc->y += rclDest.top - prclDest->top;
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| 123 |
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| 124 | *prclDest = rclDest;
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| 125 |
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| 126 | if ( rclDest.right == rclDest.left
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| 127 | || rclDest.bottom == rclDest.top)
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| 128 | {
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| 129 | DISPDBG((1, "vbvaFindChangedRect: empty dest rect: %d-%d, %d-%d\n", rclDest.left, rclDest.right, rclDest.top, rclDest.bottom));
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| 130 | return FALSE;
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| 131 | }
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| 132 |
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| 133 | rclSrc.left = pptlSrc->x;
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| 134 | rclSrc.top = pptlSrc->y;
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| 135 | rclSrc.right = pptlSrc->x + (rclDest.right - rclDest.left);
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| 136 | rclSrc.bottom = pptlSrc->y + (rclDest.bottom - rclDest.top);
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| 137 | vrdpAdjustRect (psoSrc, &rclSrc);
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| 138 |
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| 139 | if ( rclSrc.right == rclSrc.left
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| 140 | || rclSrc.bottom == rclSrc.top)
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| 141 | {
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| 142 | prclDest->right = prclDest->left;
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| 143 | prclDest->bottom = prclDest->top;
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| 144 |
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| 145 | DISPDBG((1, "vbvaFindChangedRect: empty src rect: %d-%d, %d-%d\n", rclSrc.left, rclSrc.right, rclSrc.top, rclSrc.bottom));
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| 146 | return FALSE;
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| 147 | }
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| 148 |
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| 149 | VBVA_ASSERT(pptlSrc->x == rclSrc.left);
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| 150 | VBVA_ASSERT(pptlSrc->y == rclSrc.top);
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| 151 |
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| 152 | /*
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| 153 | * Compare the content of the screen surface (psoDest) with the source surface (psoSrc).
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| 154 | * Update the prclDest with the rectangle that will be actually changed after
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| 155 | * copying the source bits to the screen.
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| 156 | */
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| 157 | pu8Src = (BYTE *)psoSrc->pvScan0 + psoSrc->lDelta * pptlSrc->y + cbPixelSrc * pptlSrc->x;
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| 158 | pu8Dest = (BYTE *)psoDest->pvScan0 + psoDest->lDelta * prclDest->top + cbPixelDest * prclDest->left;
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| 159 |
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| 160 | /* Use the rclDest as the bounding rectangle for the changed area. */
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| 161 | rclDest.left = prclDest->right; /* +inf */
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| 162 | rclDest.right = prclDest->left; /* -inf */
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| 163 | rclDest.top = prclDest->bottom; /* +inf */
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| 164 | rclDest.bottom = prclDest->top; /* -inf */
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| 165 |
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| 166 | fTopNonEqualFound = 0;
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| 167 | yTopmost = prclDest->top; /* inclusive */
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| 168 | yBottommost = prclDest->top - 1; /* inclusive */
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| 169 |
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| 170 | for (y = prclDest->top; y < prclDest->bottom; y++)
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| 171 | {
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| 172 | int fLeftNonEqualFound = 0;
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| 173 |
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| 174 | /* Init to an empty line. */
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| 175 | int xLeftmost = prclDest->left; /* inclusive */
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| 176 | int xRightmost = prclDest->left - 1; /* inclusive */
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| 177 |
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| 178 | BYTE *pu8SrcLine = pu8Src;
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| 179 | BYTE *pu8DestLine = pu8Dest;
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| 180 |
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| 181 | for (x = prclDest->left; x < prclDest->right; x++)
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| 182 | {
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| 183 | int fEqualPixels;
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| 184 |
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| 185 | if (cbPixelSrc == cbPixelDest)
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| 186 | {
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| 187 | fEqualPixels = (memcmp (pu8SrcLine, pu8DestLine, cbPixelDest) == 0);
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| 188 | }
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| 189 | else
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| 190 | {
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| 191 | /* Convert larger pixel to the smaller pixel format. */
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| 192 | ULONG ulConvertedPixel;
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| 193 | if (cbPixelSrc > cbPixelDest)
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| 194 | {
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| 195 | /* Convert the source pixel to the destination pixel format. */
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| 196 | ulConvertedPixel = vbvaConvertPixel ( /*from*/ pu8SrcLine, cbPixelSrc,
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| 197 | /*to*/ cbPixelDest);
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| 198 | fEqualPixels = (memcmp (&ulConvertedPixel, pu8DestLine, cbPixelDest) == 0);
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| 199 | }
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| 200 | else
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| 201 | {
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| 202 | /* Convert the destination pixel to the source pixel format. */
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| 203 | ulConvertedPixel = vbvaConvertPixel ( /*from*/ pu8DestLine, cbPixelDest,
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| 204 | /*to*/ cbPixelSrc);
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| 205 | fEqualPixels = (memcmp (&ulConvertedPixel, pu8SrcLine, cbPixelSrc) == 0);
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| 206 | }
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| 207 | }
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| 208 |
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| 209 | if (fEqualPixels)
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| 210 | {
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| 211 | /* Equal pixels. */
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| 212 | if (!fLeftNonEqualFound)
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| 213 | {
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| 214 | xLeftmost = x;
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| 215 | }
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| 216 | }
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| 217 | else
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| 218 | {
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| 219 | fLeftNonEqualFound = 1;
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| 220 | xRightmost = x;
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| 221 | }
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| 222 |
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| 223 | pu8SrcLine += cbPixelSrc;
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| 224 | pu8DestLine += cbPixelDest;
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| 225 | }
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| 226 |
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| 227 | /* min */
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| 228 | if (rclDest.left > xLeftmost)
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| 229 | {
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| 230 | rclDest.left = xLeftmost;
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| 231 | }
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| 232 |
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| 233 | /* max */
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| 234 | if (rclDest.right < xRightmost)
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| 235 | {
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| 236 | rclDest.right = xRightmost;
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| 237 | }
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| 238 |
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| 239 | if (xLeftmost > xRightmost) /* xRightmost is inclusive, so '>', not '>='. */
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| 240 | {
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| 241 | /* Empty line. */
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| 242 | if (!fTopNonEqualFound)
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| 243 | {
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| 244 | yTopmost = y;
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| 245 | }
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| 246 | }
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| 247 | else
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| 248 | {
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| 249 | fTopNonEqualFound = 1;
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| 250 | yBottommost = y;
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| 251 | }
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| 252 |
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| 253 | pu8Src += psoSrc->lDelta;
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| 254 | pu8Dest += psoDest->lDelta;
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| 255 | }
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| 256 |
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| 257 | /* min */
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| 258 | if (rclDest.top > yTopmost)
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| 259 | {
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| 260 | rclDest.top = yTopmost;
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| 261 | }
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| 262 |
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| 263 | /* max */
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| 264 | if (rclDest.bottom < yBottommost)
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| 265 | {
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| 266 | rclDest.bottom = yBottommost;
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| 267 | }
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| 268 |
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| 269 | /* rclDest was calculated with right-bottom inclusive.
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| 270 | * The following checks and the caller require exclusive coords.
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| 271 | */
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| 272 | rclDest.right++;
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| 273 | rclDest.bottom++;
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| 274 |
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| 275 | DISPDBG((1, "vbvaFindChangedRect: new dest %d,%d %dx%d from %d,%d\n",
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| 276 | rclDest.left, rclDest.top, rclDest.right - rclDest.left, rclDest.bottom - rclDest.top,
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| 277 | pptlSrc->x, pptlSrc->y
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| 278 | ));
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| 279 |
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| 280 | /* Update the rectangle with the changed area. */
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| 281 | if ( rclDest.left >= rclDest.right
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| 282 | || rclDest.top >= rclDest.bottom)
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| 283 | {
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| 284 | /* Empty rect. */
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| 285 | DISPDBG((1, "vbvaFindChangedRect: empty\n"));
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| 286 | prclDest->right = prclDest->left;
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| 287 | prclDest->bottom = prclDest->top;
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| 288 | return FALSE;
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| 289 | }
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| 290 |
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| 291 | DISPDBG((1, "vbvaFindChangedRect: not empty\n"));
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| 292 |
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| 293 | pptlSrc->x += rclDest.left - prclDest->left;
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| 294 | pptlSrc->y += rclDest.top - prclDest->top;
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| 295 |
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| 296 | *prclDest = rclDest;
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| 297 |
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| 298 | return TRUE;
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| 299 | }
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| 300 | #endif /* VBOX_VBVA_ADJUST_RECT */
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| 301 |
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| 302 | void vboxReportDirtyRect (PPDEV ppdev, RECTL *pRectOrig)
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| 303 | {
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| 304 | if (ppdev)
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| 305 | {
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| 306 | VBVACMDHDR hdr;
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| 307 |
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| 308 | RECTL rect = *pRectOrig;
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| 309 |
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| 310 | if (rect.left < 0) rect.left = 0;
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| 311 | if (rect.top < 0) rect.top = 0;
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| 312 | if (rect.right > (int)ppdev->cxScreen) rect.right = ppdev->cxScreen;
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| 313 | if (rect.bottom > (int)ppdev->cyScreen) rect.bottom = ppdev->cyScreen;
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| 314 |
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| 315 | hdr.x = (int16_t)rect.left;
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| 316 | hdr.y = (int16_t)rect.top;
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| 317 | hdr.w = (uint16_t)(rect.right - rect.left);
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| 318 | hdr.h = (uint16_t)(rect.bottom - rect.top);
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| 319 |
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| 320 | hdr.x += (int16_t)ppdev->ptlDevOrg.x;
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| 321 | hdr.y += (int16_t)ppdev->ptlDevOrg.y;
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| 322 |
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| 323 | vboxWrite (ppdev, &hdr, sizeof(hdr));
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| 324 | }
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| 325 |
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| 326 | return;
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| 327 | }
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| 328 |
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| 329 | void vbvaReportDirtyRect (PPDEV ppdev, RECTL *prcl)
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| 330 | {
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| 331 | if (prcl)
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| 332 | {
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| 333 | DISPDBG((1, "DISP VBVA dirty rect: left %d, top: %d, width: %d, height: %d\n",
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| 334 | prcl->left, prcl->top, prcl->right - prcl->left, prcl->bottom - prcl->top));
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| 335 |
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| 336 | vboxReportDirtyRect(ppdev, prcl);
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| 337 | }
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| 338 | }
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| 339 |
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| 340 | void vbvaReportDirtyPath (PPDEV ppdev, PATHOBJ *ppo)
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| 341 | {
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| 342 | RECTFX rcfxBounds;
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| 343 | RECTL rclBounds;
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| 344 |
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| 345 | PATHOBJ_vGetBounds(ppo, &rcfxBounds);
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| 346 |
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| 347 | rclBounds.left = FXTOLFLOOR(rcfxBounds.xLeft);
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| 348 | rclBounds.right = FXTOLCEILING(rcfxBounds.xRight);
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| 349 | rclBounds.top = FXTOLFLOOR(rcfxBounds.yTop);
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| 350 | rclBounds.bottom = FXTOLCEILING(rcfxBounds.yBottom);
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| 351 |
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| 352 | vbvaReportDirtyRect (ppdev, &rclBounds);
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| 353 | }
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| 354 |
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| 355 | __inline void vbvaReportDirtyClip (PPDEV ppdev, CLIPOBJ *pco, RECTL *prcl)
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| 356 | {
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| 357 | if (prcl)
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| 358 | {
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| 359 | vbvaReportDirtyRect (ppdev, prcl);
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| 360 | }
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| 361 | else if (pco)
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| 362 | {
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| 363 | vbvaReportDirtyRect (ppdev, &pco->rclBounds);
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| 364 | }
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| 365 | }
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| 366 |
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| 367 |
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| 368 | void vbvaBitBlt (
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| 369 | SURFOBJ *psoTrg,
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| 370 | SURFOBJ *psoSrc,
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| 371 | SURFOBJ *psoMask,
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| 372 | CLIPOBJ *pco,
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| 373 | XLATEOBJ *pxlo,
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| 374 | RECTL *prclTrg,
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| 375 | POINTL *pptlSrc,
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| 376 | POINTL *pptlMask,
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| 377 | BRUSHOBJ *pbo,
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| 378 | POINTL *pptlBrush,
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| 379 | ROP4 rop4)
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| 380 | {
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| 381 | PPDEV ppdev = (PPDEV)psoTrg->dhpdev;
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| 382 |
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| 383 | vbvaReportDirtyClip (ppdev, pco, prclTrg);
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| 384 | }
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| 385 |
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| 386 | void vbvaTextOut(
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| 387 | SURFOBJ *pso,
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| 388 | STROBJ *pstro,
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| 389 | FONTOBJ *pfo,
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| 390 | CLIPOBJ *pco,
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| 391 | RECTL *prclExtra, // Obsolete, always NULL
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| 392 | RECTL *prclOpaque,
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| 393 | BRUSHOBJ *pboFore,
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| 394 | BRUSHOBJ *pboOpaque,
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| 395 | POINTL *pptlOrg,
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| 396 | MIX mix
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| 397 | )
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| 398 | {
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| 399 | PPDEV ppdev = (PPDEV)pso->dhpdev;
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| 400 |
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| 401 | vbvaReportDirtyClip (ppdev, pco, prclOpaque? prclOpaque: &pstro->rclBkGround);
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| 402 | }
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| 403 |
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| 404 | void vbvaLineTo(
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| 405 | SURFOBJ *pso,
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| 406 | CLIPOBJ *pco,
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| 407 | BRUSHOBJ *pbo,
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| 408 | LONG x1,
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| 409 | LONG y1,
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| 410 | LONG x2,
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| 411 | LONG y2,
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| 412 | RECTL *prclBounds,
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| 413 | MIX mix
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| 414 | )
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| 415 | {
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| 416 | PPDEV ppdev = (PPDEV)pso->dhpdev;
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| 417 |
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| 418 | vbvaReportDirtyClip (ppdev, pco, prclBounds);
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| 419 | }
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| 420 |
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| 421 | void vbvaStretchBlt(
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| 422 | SURFOBJ *psoDest,
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|---|
| 423 | SURFOBJ *psoSrc,
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| 424 | SURFOBJ *psoMask,
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| 425 | CLIPOBJ *pco,
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| 426 | XLATEOBJ *pxlo,
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| 427 | COLORADJUSTMENT *pca,
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|---|
| 428 | POINTL *pptlHTOrg,
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|---|
| 429 | RECTL *prclDest,
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|---|
| 430 | RECTL *prclSrc,
|
|---|
| 431 | POINTL *pptlMask,
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| 432 | ULONG iMode
|
|---|
| 433 | )
|
|---|
| 434 | {
|
|---|
| 435 | PPDEV ppdev = (PPDEV)psoDest->dhpdev;
|
|---|
| 436 |
|
|---|
| 437 | vbvaReportDirtyClip (ppdev, pco, prclDest);
|
|---|
| 438 | }
|
|---|
| 439 |
|
|---|
| 440 | void vbvaCopyBits(
|
|---|
| 441 | SURFOBJ *psoDest,
|
|---|
| 442 | SURFOBJ *psoSrc,
|
|---|
| 443 | CLIPOBJ *pco,
|
|---|
| 444 | XLATEOBJ *pxlo,
|
|---|
| 445 | RECTL *prclDest,
|
|---|
| 446 | POINTL *pptlSrc
|
|---|
| 447 | )
|
|---|
| 448 | {
|
|---|
| 449 | PPDEV ppdev = (PPDEV)psoDest->dhpdev;
|
|---|
| 450 |
|
|---|
| 451 | vbvaReportDirtyClip (ppdev, pco, prclDest);
|
|---|
| 452 | }
|
|---|
| 453 |
|
|---|
| 454 | void vbvaPaint(
|
|---|
| 455 | SURFOBJ *pso,
|
|---|
| 456 | CLIPOBJ *pco,
|
|---|
| 457 | BRUSHOBJ *pbo,
|
|---|
| 458 | POINTL *pptlBrushOrg,
|
|---|
| 459 | MIX mix
|
|---|
| 460 | )
|
|---|
| 461 | {
|
|---|
| 462 | PPDEV ppdev = (PPDEV)pso->dhpdev;
|
|---|
| 463 |
|
|---|
| 464 | vbvaReportDirtyClip (ppdev, pco, NULL);
|
|---|
| 465 | }
|
|---|
| 466 |
|
|---|
| 467 | void vbvaFillPath(
|
|---|
| 468 | SURFOBJ *pso,
|
|---|
| 469 | PATHOBJ *ppo,
|
|---|
| 470 | CLIPOBJ *pco,
|
|---|
| 471 | BRUSHOBJ *pbo,
|
|---|
| 472 | POINTL *pptlBrushOrg,
|
|---|
| 473 | MIX mix,
|
|---|
| 474 | FLONG flOptions
|
|---|
| 475 | )
|
|---|
| 476 | {
|
|---|
| 477 | PPDEV ppdev = (PPDEV)pso->dhpdev;
|
|---|
| 478 |
|
|---|
| 479 | vbvaReportDirtyPath (ppdev, ppo);
|
|---|
| 480 | }
|
|---|
| 481 |
|
|---|
| 482 | void vbvaStrokePath(
|
|---|
| 483 | SURFOBJ *pso,
|
|---|
| 484 | PATHOBJ *ppo,
|
|---|
| 485 | CLIPOBJ *pco,
|
|---|
| 486 | XFORMOBJ *pxo,
|
|---|
| 487 | BRUSHOBJ *pbo,
|
|---|
| 488 | POINTL *pptlBrushOrg,
|
|---|
| 489 | LINEATTRS *plineattrs,
|
|---|
| 490 | MIX mix
|
|---|
| 491 | )
|
|---|
| 492 | {
|
|---|
| 493 | PPDEV ppdev = (PPDEV)pso->dhpdev;
|
|---|
| 494 |
|
|---|
| 495 | vbvaReportDirtyPath (ppdev, ppo);
|
|---|
| 496 | }
|
|---|
| 497 |
|
|---|
| 498 | void vbvaSaveScreenBits(
|
|---|
| 499 | SURFOBJ *pso,
|
|---|
| 500 | ULONG iMode,
|
|---|
| 501 | ULONG_PTR ident,
|
|---|
| 502 | RECTL *prcl
|
|---|
| 503 | )
|
|---|
| 504 | {
|
|---|
| 505 | PPDEV ppdev = (PPDEV)pso->dhpdev;
|
|---|
| 506 |
|
|---|
| 507 | VBVA_ASSERT(iMode == SS_RESTORE || iMode == SS_SAVE);
|
|---|
| 508 |
|
|---|
| 509 | vbvaReportDirtyRect (ppdev, prcl);
|
|---|
| 510 | }
|
|---|
| 511 |
|
|---|
