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a09e091a JB |
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 | } |