| 1 | /* |
| 2 | * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany. |
| 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 Thomas Roell not be used in |
| 9 | * advertising or publicity pertaining to distribution of the software without |
| 10 | * specific, written prior permission. Thomas Roell makes no representations |
| 11 | * about the suitability of this software for any purpose. It is provided |
| 12 | * "as is" without express or implied warranty. |
| 13 | * |
| 14 | * THOMAS ROELL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
| 15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
| 16 | * EVENT SHALL THOMAS ROELL 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 | |
| 24 | #ifdef HAVE_XORG_CONFIG_H |
| 25 | #include <xorg-config.h> |
| 26 | #endif |
| 27 | |
| 28 | #include <X11/X.h> |
| 29 | #include <X11/Xproto.h> |
| 30 | #include "windowstr.h" |
| 31 | #include "compiler.h" |
| 32 | #include "mipointer.h" |
| 33 | #include "micmap.h" |
| 34 | |
| 35 | #include "xf86.h" |
| 36 | #include "vgaHW.h" |
| 37 | |
| 38 | #include <X11/extensions/xf86dgaproto.h> |
| 39 | #include "dgaproc.h" |
| 40 | |
| 41 | #define NOMAPYET (ColormapPtr) 0 |
| 42 | |
| 43 | int |
| 44 | vgaListInstalledColormaps(pScreen, pmaps) |
| 45 | ScreenPtr pScreen; |
| 46 | Colormap *pmaps; |
| 47 | { |
| 48 | /* By the time we are processing requests, we can guarantee that there |
| 49 | * is always a colormap installed */ |
| 50 | |
| 51 | *pmaps = GetInstalledmiColormap(pScreen)->mid; |
| 52 | return 1; |
| 53 | } |
| 54 | |
| 55 | int |
| 56 | vgaGetInstalledColormaps(pScreen, pmaps) |
| 57 | ScreenPtr pScreen; |
| 58 | ColormapPtr *pmaps; |
| 59 | { |
| 60 | /* By the time we are processing requests, we can guarantee that there |
| 61 | * is always a colormap installed */ |
| 62 | |
| 63 | *pmaps = GetInstalledmiColormap(pScreen); |
| 64 | return 1; |
| 65 | } |
| 66 | |
| 67 | int |
| 68 | vgaCheckColorMap(ColormapPtr pmap) |
| 69 | { |
| 70 | return (pmap != GetInstalledmiColormap(pmap->pScreen)); |
| 71 | } |
| 72 | |
| 73 | void |
| 74 | vgaStoreColors(pmap, ndef, pdefs) |
| 75 | ColormapPtr pmap; |
| 76 | int ndef; |
| 77 | xColorItem *pdefs; |
| 78 | { |
| 79 | int i; |
| 80 | unsigned char *cmap, *tmp = NULL; |
| 81 | xColorItem directDefs[256]; |
| 82 | Bool new_overscan = FALSE; |
| 83 | Bool writeColormap; |
| 84 | int scrnIndex = pmap->pScreen->myNum; |
| 85 | ScrnInfoPtr scrninfp = xf86ScreenToScrn(pmap->pScreen); |
| 86 | vgaHWPtr hwp = VGAHWPTR(scrninfp); |
| 87 | |
| 88 | unsigned char overscan = hwp->ModeReg.Attribute[OVERSCAN]; |
| 89 | unsigned char tmp_overscan = 0; |
| 90 | |
| 91 | if (vgaCheckColorMap(pmap)) |
| 92 | return; |
| 93 | |
| 94 | if ((pmap->pVisual->class | DynamicClass) == DirectColor) { |
| 95 | ndef = miExpandDirectColors(pmap, ndef, pdefs, directDefs); |
| 96 | pdefs = directDefs; |
| 97 | } |
| 98 | |
| 99 | writeColormap = scrninfp->vtSema; |
| 100 | if (DGAScreenAvailable(pmap->pScreen)) { |
| 101 | writeColormap = writeColormap || |
| 102 | (DGAGetDirectMode(scrnIndex) && |
| 103 | !(DGAGetFlags(scrnIndex) & XF86DGADirectColormap)) || |
| 104 | (DGAGetFlags(scrnIndex) & XF86DGAHasColormap); |
| 105 | } |
| 106 | |
| 107 | if (writeColormap) |
| 108 | hwp->enablePalette(hwp); |
| 109 | |
| 110 | for (i = 0; i < ndef; i++) { |
| 111 | if (pdefs[i].pixel == overscan) { |
| 112 | new_overscan = TRUE; |
| 113 | } |
| 114 | cmap = &(hwp->ModeReg.DAC[pdefs[i].pixel * 3]); |
| 115 | if (scrninfp->rgbBits == 8) { |
| 116 | cmap[0] = pdefs[i].red >> 8; |
| 117 | cmap[1] = pdefs[i].green >> 8; |
| 118 | cmap[2] = pdefs[i].blue >> 8; |
| 119 | } |
| 120 | else { |
| 121 | cmap[0] = pdefs[i].red >> 10; |
| 122 | cmap[1] = pdefs[i].green >> 10; |
| 123 | cmap[2] = pdefs[i].blue >> 10; |
| 124 | } |
| 125 | #if 0 |
| 126 | if (clgd6225Lcd) { |
| 127 | /* The LCD doesn't like white */ |
| 128 | if (cmap[0] == 63) |
| 129 | cmap[0] = 62; |
| 130 | if (cmap[1] == 63) |
| 131 | cmap[1] = 62; |
| 132 | if (cmap[2] == 63) |
| 133 | cmap[2] = 62; |
| 134 | } |
| 135 | #endif |
| 136 | |
| 137 | if (writeColormap) { |
| 138 | if (hwp->ShowOverscan && i == 255) |
| 139 | continue; |
| 140 | hwp->writeDacWriteAddr(hwp, pdefs[i].pixel); |
| 141 | DACDelay(hwp); |
| 142 | hwp->writeDacData(hwp, cmap[0]); |
| 143 | DACDelay(hwp); |
| 144 | hwp->writeDacData(hwp, cmap[1]); |
| 145 | DACDelay(hwp); |
| 146 | hwp->writeDacData(hwp, cmap[2]); |
| 147 | DACDelay(hwp); |
| 148 | } |
| 149 | } |
| 150 | if (new_overscan && !hwp->ShowOverscan) { |
| 151 | new_overscan = FALSE; |
| 152 | for (i = 0; i < ndef; i++) { |
| 153 | if (pdefs[i].pixel == overscan) { |
| 154 | if ((pdefs[i].red != 0) || |
| 155 | (pdefs[i].green != 0) || (pdefs[i].blue != 0)) { |
| 156 | new_overscan = TRUE; |
| 157 | tmp_overscan = overscan; |
| 158 | tmp = &(hwp->ModeReg.DAC[pdefs[i].pixel * 3]); |
| 159 | } |
| 160 | break; |
| 161 | } |
| 162 | } |
| 163 | if (new_overscan) { |
| 164 | /* |
| 165 | * Find a black pixel, or the nearest match. |
| 166 | */ |
| 167 | for (i = 255; i >= 0; i--) { |
| 168 | cmap = &(hwp->ModeReg.DAC[i * 3]); |
| 169 | if ((cmap[0] == 0) && (cmap[1] == 0) && (cmap[2] == 0)) { |
| 170 | overscan = i; |
| 171 | break; |
| 172 | } |
| 173 | else { |
| 174 | if ((cmap[0] < tmp[0]) && |
| 175 | (cmap[1] < tmp[1]) && (cmap[2] < tmp[2])) { |
| 176 | tmp = cmap; |
| 177 | tmp_overscan = i; |
| 178 | } |
| 179 | } |
| 180 | } |
| 181 | if (i < 0) { |
| 182 | overscan = tmp_overscan; |
| 183 | } |
| 184 | hwp->ModeReg.Attribute[OVERSCAN] = overscan; |
| 185 | if (writeColormap) { |
| 186 | hwp->writeAttr(hwp, OVERSCAN, overscan); |
| 187 | } |
| 188 | } |
| 189 | } |
| 190 | |
| 191 | if (writeColormap) |
| 192 | hwp->disablePalette(hwp); |
| 193 | } |
| 194 | |
| 195 | void |
| 196 | vgaInstallColormap(pmap) |
| 197 | ColormapPtr pmap; |
| 198 | { |
| 199 | ColormapPtr oldmap = GetInstalledmiColormap(pmap->pScreen); |
| 200 | int entries; |
| 201 | Pixel *ppix; |
| 202 | xrgb *prgb; |
| 203 | xColorItem *defs; |
| 204 | int i; |
| 205 | |
| 206 | if (pmap == oldmap) |
| 207 | return; |
| 208 | |
| 209 | if ((pmap->pVisual->class | DynamicClass) == DirectColor) |
| 210 | entries = (pmap->pVisual->redMask | |
| 211 | pmap->pVisual->greenMask | pmap->pVisual->blueMask) + 1; |
| 212 | else |
| 213 | entries = pmap->pVisual->ColormapEntries; |
| 214 | |
| 215 | ppix = (Pixel *) malloc(entries * sizeof(Pixel)); |
| 216 | prgb = (xrgb *) malloc(entries * sizeof(xrgb)); |
| 217 | defs = (xColorItem *) malloc(entries * sizeof(xColorItem)); |
| 218 | |
| 219 | if (oldmap != NOMAPYET) |
| 220 | WalkTree(pmap->pScreen, TellLostMap, &oldmap->mid); |
| 221 | |
| 222 | SetInstalledmiColormap(pmap->pScreen, pmap); |
| 223 | |
| 224 | for (i = 0; i < entries; i++) |
| 225 | ppix[i] = i; |
| 226 | |
| 227 | QueryColors(pmap, entries, ppix, prgb, serverClient); |
| 228 | |
| 229 | for (i = 0; i < entries; i++) { /* convert xrgbs to xColorItems */ |
| 230 | defs[i].pixel = ppix[i]; |
| 231 | defs[i].red = prgb[i].red; |
| 232 | defs[i].green = prgb[i].green; |
| 233 | defs[i].blue = prgb[i].blue; |
| 234 | defs[i].flags = DoRed | DoGreen | DoBlue; |
| 235 | } |
| 236 | pmap->pScreen->StoreColors(pmap, entries, defs); |
| 237 | |
| 238 | WalkTree(pmap->pScreen, TellGainedMap, &pmap->mid); |
| 239 | |
| 240 | free(ppix); |
| 241 | free(prgb); |
| 242 | free(defs); |
| 243 | } |
| 244 | |
| 245 | void |
| 246 | vgaUninstallColormap(pmap) |
| 247 | ColormapPtr pmap; |
| 248 | { |
| 249 | |
| 250 | ColormapPtr defColormap; |
| 251 | |
| 252 | if (pmap != GetInstalledmiColormap(pmap->pScreen)) |
| 253 | return; |
| 254 | |
| 255 | dixLookupResourceByType((pointer *) &defColormap, |
| 256 | pmap->pScreen->defColormap, RT_COLORMAP, |
| 257 | serverClient, DixInstallAccess); |
| 258 | |
| 259 | if (defColormap == GetInstalledmiColormap(pmap->pScreen)) |
| 260 | return; |
| 261 | |
| 262 | (*pmap->pScreen->InstallColormap) (defColormap); |
| 263 | } |
| 264 | |
| 265 | void |
| 266 | vgaHandleColormaps(ScreenPtr pScreen, ScrnInfoPtr scrnp) |
| 267 | { |
| 268 | if (scrnp->bitsPerPixel > 1) { |
| 269 | if (scrnp->bitsPerPixel <= 8) { /* For 8bpp SVGA and VGA16 */ |
| 270 | pScreen->InstallColormap = vgaInstallColormap; |
| 271 | pScreen->UninstallColormap = vgaUninstallColormap; |
| 272 | pScreen->ListInstalledColormaps = vgaListInstalledColormaps; |
| 273 | pScreen->StoreColors = vgaStoreColors; |
| 274 | } |
| 275 | } |
| 276 | } |