1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "xf86.h"
#include "xf86_OSproc.h"
#include "dgaproc.h"
#include "dummy.h"
static Bool DUMMY_OpenFramebuffer(ScrnInfoPtr, char **, unsigned char **,
int *, int *, int *);
static Bool DUMMY_SetMode(ScrnInfoPtr, DGAModePtr);
static int DUMMY_GetViewport(ScrnInfoPtr);
static void DUMMY_SetViewport(ScrnInfoPtr, int, int, int);
static
DGAFunctionRec DUMMYDGAFuncs = {
DUMMY_OpenFramebuffer,
NULL,
DUMMY_SetMode,
DUMMY_SetViewport,
DUMMY_GetViewport,
NULL,
NULL,
NULL,
#if 0
DUMMY_BlitTransRect
#else
NULL
#endif
};
Bool
DUMMYDGAInit(ScreenPtr pScreen)
{
ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
DUMMYPtr pDUMMY = DUMMYPTR(pScrn);
DGAModePtr modes = NULL, newmodes = NULL, currentMode;
DisplayModePtr pMode, firstMode;
int Bpp = pScrn->bitsPerPixel >> 3;
int num = 0, imlines, pixlines;
imlines = (pScrn->videoRam * 1024) /
(pScrn->displayWidth * (pScrn->bitsPerPixel >> 3));
pixlines = imlines;
pMode = firstMode = pScrn->modes;
while(pMode) {
newmodes = realloc(modes, (num + 1) * sizeof(DGAModeRec));
if(!newmodes) {
free(modes);
return FALSE;
}
modes = newmodes;
currentMode = modes + num;
num++;
currentMode->mode = pMode;
currentMode->flags = DGA_CONCURRENT_ACCESS | DGA_PIXMAP_AVAILABLE;
if(pMode->Flags & V_DBLSCAN)
currentMode->flags |= DGA_DOUBLESCAN;
if(pMode->Flags & V_INTERLACE)
currentMode->flags |= DGA_INTERLACED;
currentMode->byteOrder = pScrn->imageByteOrder;
currentMode->depth = pScrn->depth;
currentMode->bitsPerPixel = pScrn->bitsPerPixel;
currentMode->red_mask = pScrn->mask.red;
currentMode->green_mask = pScrn->mask.green;
currentMode->blue_mask = pScrn->mask.blue;
currentMode->visualClass = (Bpp == 1) ? PseudoColor : TrueColor;
currentMode->viewportWidth = pMode->HDisplay;
currentMode->viewportHeight = pMode->VDisplay;
currentMode->xViewportStep = 1;
currentMode->yViewportStep = 1;
currentMode->viewportFlags = DGA_FLIP_RETRACE;
currentMode->offset = 0;
currentMode->address = (unsigned char *)pDUMMY->FBBase;
currentMode->bytesPerScanline =
((pScrn->displayWidth * Bpp) + 3) & ~3L;
currentMode->imageWidth = pScrn->displayWidth;
currentMode->imageHeight = imlines;
currentMode->pixmapWidth = currentMode->imageWidth;
currentMode->pixmapHeight = pixlines;
currentMode->maxViewportX = currentMode->imageWidth -
currentMode->viewportWidth;
currentMode->maxViewportY = currentMode->imageHeight -
currentMode->viewportHeight;
pMode = pMode->next;
if(pMode == firstMode)
break;
}
pDUMMY->numDGAModes = num;
pDUMMY->DGAModes = modes;
return DGAInit(pScreen, &DUMMYDGAFuncs, modes, num);
}
static DisplayModePtr DUMMYSavedDGAModes[MAXSCREENS];
static Bool
DUMMY_SetMode(
ScrnInfoPtr pScrn,
DGAModePtr pMode
){
int index = pScrn->pScreen->myNum;
DUMMYPtr pDUMMY = DUMMYPTR(pScrn);
if(!pMode) { /* restore the original mode */
if(pDUMMY->DGAactive) {
pScrn->currentMode = DUMMYSavedDGAModes[index];
DUMMYSwitchMode(index, pScrn->currentMode, 0);
DUMMYAdjustFrame(index, 0, 0, 0);
pDUMMY->DGAactive = FALSE;
}
} else {
if(!pDUMMY->DGAactive) { /* save the old parameters */
DUMMYSavedDGAModes[index] = pScrn->currentMode;
pDUMMY->DGAactive = TRUE;
}
DUMMYSwitchMode(index, pMode->mode, 0);
}
return TRUE;
}
static int
DUMMY_GetViewport(
ScrnInfoPtr pScrn
){
DUMMYPtr pDUMMY = DUMMYPTR(pScrn);
return pDUMMY->DGAViewportStatus;
}
static void
DUMMY_SetViewport(
ScrnInfoPtr pScrn,
int x, int y,
int flags
){
DUMMYPtr pDUMMY = DUMMYPTR(pScrn);
DUMMYAdjustFrame(pScrn->pScreen->myNum, x, y, flags);
pDUMMY->DGAViewportStatus = 0;
}
static Bool
DUMMY_OpenFramebuffer(
ScrnInfoPtr pScrn,
char **name,
unsigned char **mem,
int *size,
int *offset,
int *flags
){
DUMMYPtr pDUMMY = DUMMYPTR(pScrn);
*name = NULL; /* no special device */
*mem = (unsigned char*)pDUMMY->FBBase;
*size = pScrn->videoRam * 1024;
*offset = 0;
*flags = DGA_NEED_ROOT;
return TRUE;
}
|
