Subversion Repositories HelenOS

Rev

Rev 1365 | Rev 1392 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1363 vana 1
/*
2
 * Copyright (C) 2006 Jakub Vana
3
 * All rights reserved.
4
 *
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
7
 * are met:
8
 *
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
13
 *   documentation and/or other materials provided with the distribution.
14
 * - The name of the author may not be used to endorse or promote products
15
 *   derived from this software without specific prior written permission.
16
 *
17
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
28
 
29
#include <stdio.h>
30
#include <ddi.h>
31
#include <task.h>
32
#include <stdlib.h>
33
#include <ddi.h>
34
#include <sysinfo.h>
35
#include <align.h>
36
#include <as.h>
37
#include <ipc/fb.h>
38
 
39
 
40
#include <ipc/ipc.h>
41
#include <ipc/services.h>
42
#include <unistd.h>
43
#include <stdlib.h>
44
#include <ipc/ns.h>
45
 
46
#include <kernel/errno.h>
47
 
48
 
49
#include "fb.h"
50
 
51
 
52
 
53
#define pl /*printf("FB:L:%d\n",(int)__LINE__);*/
54
 
55
#define EFB (-1)
56
 
57
#define DEFAULT_BGCOLOR     0x000080
58
#define DEFAULT_FGCOLOR     0xffff00
59
#define DEFAULT_LOGOCOLOR   0x0000ff
60
 
61
#define MAIN_BGCOLOR        0x404000
62
#define MAIN_FGCOLOR        0x000000
63
#define MAIN_LOGOCOLOR  0x404000
64
 
65
#define SPACING (2)
66
 
67
#define H_NO_VFBS 3
68
#define V_NO_VFBS 3
69
 
70
 
71
static void fb_putchar(int item,char ch);
72
int create_window(int item,unsigned int x, unsigned int y,unsigned int x_size, unsigned int y_size,
73
    unsigned int BGCOLOR,unsigned int FGCOLOR,unsigned int LOGOCOLOR);
74
void fb_init(int item,__address addr, unsigned int x, unsigned int y, unsigned int bpp, unsigned int scan,
75
    unsigned int BGCOLOR,unsigned int FGCOLOR,unsigned int LOGOCOLOR);
76
 
77
 
78
unsigned int mod_col(unsigned int col,int mod);
79
 
80
 
81
 
82
 
83
 
84
int main(int argc, char *argv[])
85
{
86
 
87
    __address fb_ph_addr;
88
    unsigned int fb_width;
89
    unsigned int fb_height;
90
    unsigned int fb_bpp;
91
    unsigned int fb_scanline;
92
    __address fb_addr;
93
    int a=0;
94
 
95
 
96
    if(!sysinfo_value("fb")) return -1;
97
 
98
    fb_ph_addr=sysinfo_value("fb.address.physical");
99
    fb_width=sysinfo_value("fb.width");
100
    fb_height=sysinfo_value("fb.height");
101
    fb_bpp=sysinfo_value("fb.bpp");
102
    fb_scanline=sysinfo_value("fb.scanline");
103
 
104
    fb_addr=ALIGN_UP(((__address)set_maxheapsize(USER_ADDRESS_SPACE_SIZE_ARCH>>1)),PAGE_SIZE);
105
 
106
 
107
 
108
    map_physmem(task_get_id(),(void *)((__address)fb_ph_addr),(void *)fb_addr,
109
        (fb_scanline*fb_height+PAGE_SIZE-1)>>PAGE_WIDTH,1);
110
 
111
    fb_init(0,fb_addr, fb_width, fb_height, fb_bpp, fb_scanline,
112
        MAIN_BGCOLOR,MAIN_FGCOLOR,MAIN_LOGOCOLOR);
113
 
114
    fb_putchar(0,'\n');
115
    fb_putchar(0,' ');
116
 
117
 
118
    {
119
        int i,j;
120
 
121
        for(i=0;i<H_NO_VFBS;i++)
122
            for(j=0;j<V_NO_VFBS;j++)
123
            {
124
 
125
                int w=create_window(0,(fb_width/H_NO_VFBS)*i+SPACING,
126
                    (fb_height/V_NO_VFBS)*j+SPACING,(fb_width/H_NO_VFBS)-2*SPACING ,
127
                        (fb_height/V_NO_VFBS)-2*SPACING,mod_col(DEFAULT_BGCOLOR,/*i+j*H_NO_VFBS*/0),
128
                            mod_col(DEFAULT_FGCOLOR,/*i+j*H_NO_VFBS*/0),
129
                                mod_col(DEFAULT_LOGOCOLOR,/*i+j*H_NO_VFBS)*/0));
130
 
131
                if(w==EFB) return -1;
132
 
133
                {
134
                    char text[]="Hello, World from\nHelenOS Framebuffer driver\non Virtual Framebuffer\nVFB ";
135
                    int i;
136
                    for(i=0;text[i];i++) fb_putchar(w,text[i]);
137
                    fb_putchar(w,w+'0');
138
                    fb_putchar(w,'\n');
139
                }
140
            }
141
    }
142
 
143
 
144
    ipc_call_t call;
145
    ipc_callid_t callid;
146
    char connected = 0;
147
    int res;
148
    int c;
149
    ipcarg_t phonead;
150
 
151
    ipcarg_t retval, arg1, arg2;
152
 
153
 
154
 
155
    if ((res = ipc_connect_to_me(PHONE_NS, SERVICE_VIDEO, 0, &phonead)) != 0)
156
    {
157
        return -1;
158
    };
159
 
160
 
161
    while (1) {
162
        static int vfb_no=1;
163
 
1365 jermar 164
        callid = ipc_wait_for_call(&call);
1363 vana 165
    //  printf("%s:Call phone=%lX..", NAME, call.in_phone_hash);
166
        switch (IPC_GET_METHOD(call)&((1<<METHOD_WIDTH)-1)) {
167
            case IPC_M_PHONE_HUNGUP:
168
//              fb_putchar(4,((a++)&15)+'A');
169
 
170
                retval = 0;
171
                break;
172
            case IPC_M_CONNECT_ME_TO:
173
                    retval = 0;
174
//              fb_putchar(1,((a++)&15)+'A');
175
                break;
176
            case FB_GET_VFB:
177
                retval = 0;
178
                arg1 = vfb_no++;   
179
//              fb_putchar(2,((a++)&15)+'A');
180
 
181
                break;
182
 
183
            case FB_PUTCHAR:
184
                retval = 0;
185
                fb_putchar(IPC_GET_ARG1(call),IPC_GET_ARG2(call));
186
//              fb_putchar(2,((a++)&15)+'A');
187
                break;
188
 
189
            default:
190
                retval = ENOENT;
191
//              fb_putchar(3,((a++)&15)+'A');
192
                break;
193
        }
194
 
195
        if (! (callid & IPC_CALLID_NOTIFICATION)) {
196
            ipc_answer_fast(callid, retval, arg1, arg2);
197
        }
198
    }
199
 
200
    return 0;
201
}
202
/*
203
 * Copyright (C) 2006 Ondrej Palkovsky
204
 * All rights reserved.
205
 *
206
 * Redistribution and use in source and binary forms, with or without
207
 * modification, are permitted provided that the following conditions
208
 * are met:
209
 *
210
 * - Redistributions of source code must retain the above copyright
211
 *   notice, this list of conditions and the following disclaimer.
212
 * - Redistributions in binary form must reproduce the above copyright
213
 *   notice, this list of conditions and the following disclaimer in the
214
 *   documentation and/or other materials provided with the distribution.
215
 * - The name of the author may not be used to endorse or promote products
216
 *   derived from this software without specific prior written permission.
217
 *
218
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
219
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
220
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
221
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
222
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
223
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
224
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
225
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
226
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
227
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
228
 */
229
 
230
#include "font-8x16.h"
231
#include <string.h>
232
 
233
#include "helenos.xbm"
234
 
235
 
236
 
237
 
238
 
239
 
240
#define GRAPHICS_ITEMS 1024
241
 
242
 
243
/***************************************************************/
244
/* Pixel specific fuctions */
245
 
246
typedef void (*putpixel_fn_t)(int item,unsigned int x, unsigned int y, int color);
247
typedef int (*getpixel_fn_t)(int item,unsigned int x, unsigned int y);
248
 
249
typedef struct framebuffer_descriptor
250
{
251
    __u8 *fbaddress ;
252
 
253
    unsigned int xres ;
254
    unsigned int yres ;
255
    unsigned int scanline ;
256
    unsigned int pixelbytes ;
257
 
258
    unsigned int position ;
259
    unsigned int columns ;
260
    unsigned int rows ;
261
 
262
    unsigned int BGCOLOR;
263
    unsigned int FGCOLOR;
264
    unsigned int LOGOCOLOR;
265
 
266
    putpixel_fn_t putpixel;
267
    getpixel_fn_t getpixel;
268
 
269
}framebuffer_descriptor_t;
270
 
271
void * graphics_items[GRAPHICS_ITEMS+1]={NULL};
272
 
273
#define FB(__a__,__b__) (((framebuffer_descriptor_t*)(graphics_items[__a__]))->__b__)
274
 
275
#define COL_WIDTH   8
276
#define ROW_BYTES   (FB(item,scanline) * FONT_SCANLINES)
277
#define RED(x, bits)    ((x >> (16 + 8 - bits)) & ((1 << bits) - 1))
278
#define GREEN(x, bits)  ((x >> (8 + 8 - bits)) & ((1 << bits) - 1))
279
#define BLUE(x, bits)   ((x >> (8 - bits)) & ((1 << bits) - 1))
280
 
281
#define POINTPOS(x, y)  (y * FB(item,scanline) + x * FB(item,pixelbytes))
282
 
283
 
284
 
285
 
286
/** Put pixel - 24-bit depth, 1 free byte */
287
static void putpixel_4byte(int item,unsigned int x, unsigned int y, int color)
288
{
289
    *((__u32 *)(FB(item,fbaddress) + POINTPOS(x, y))) = color;
290
}
291
 
292
/** Return pixel color - 24-bit depth, 1 free byte */
293
static int getpixel_4byte(int item,unsigned int x, unsigned int y)
294
{
295
    return *((__u32 *)(FB(item,fbaddress) + POINTPOS(x, y))) & 0xffffff;
296
}
297
 
298
/** Put pixel - 24-bit depth */
299
static void putpixel_3byte(int item,unsigned int x, unsigned int y, int color)
300
{
301
    unsigned int startbyte = POINTPOS(x, y);
302
 
303
#if (defined(BIG_ENDIAN) || defined(FB_BIG_ENDIAN))
304
    FB(item,fbaddress)[startbyte] = RED(color, 8);
305
    FB(item,fbaddress)[startbyte + 1] = GREEN(color, 8);
306
    FB(item,fbaddress)[startbyte + 2] = BLUE(color, 8);
307
#else
308
    FB(item,fbaddress)[startbyte + 2] = RED(color, 8);
309
    FB(item,fbaddress)[startbyte + 1] = GREEN(color, 8);
310
    FB(item,fbaddress)[startbyte + 0] = BLUE(color, 8);
311
#endif
312
 
313
 
314
}
315
 
316
/** Return pixel color - 24-bit depth */
317
static int getpixel_3byte(int item,unsigned int x, unsigned int y)
318
{
319
    unsigned int startbyte = POINTPOS(x, y);
320
 
321
 
322
 
323
#if (defined(BIG_ENDIAN) || defined(FB_BIG_ENDIAN))
324
    return FB(item,fbaddress)[startbyte] << 16 | FB(item,fbaddress)[startbyte + 1] << 8 | FB(item,fbaddress)[startbyte + 2];
325
#else
326
    return FB(item,fbaddress)[startbyte + 2] << 16 | FB(item,fbaddress)[startbyte + 1] << 8 | FB(item,fbaddress)[startbyte + 0];
327
#endif
328
 
329
 
330
}
331
 
332
/** Put pixel - 16-bit depth (5:6:5) */
333
static void putpixel_2byte(int item,unsigned int x, unsigned int y, int color)
334
{
335
    /* 5-bit, 6-bits, 5-bits */
336
    *((__u16 *)(FB(item,fbaddress) + POINTPOS(x, y))) = RED(color, 5) << 11 | GREEN(color, 6) << 5 | BLUE(color, 5);
337
}
338
 
339
/** Return pixel color - 16-bit depth (5:6:5) */
340
static int getpixel_2byte(int item,unsigned int x, unsigned int y)
341
{
342
    int color = *((__u16 *)(FB(item,fbaddress) + POINTPOS(x, y)));
343
    return (((color >> 11) & 0x1f) << (16 + 3)) | (((color >> 5) & 0x3f) << (8 + 2)) | ((color & 0x1f) << 3);
344
}
345
 
346
/** Put pixel - 8-bit depth (3:2:3) */
347
static void putpixel_1byte(int item,unsigned int x, unsigned int y, int color)
348
{
349
    FB(item,fbaddress)[POINTPOS(x, y)] = RED(color, 3) << 5 | GREEN(color, 2) << 3 | BLUE(color, 3);
350
}
351
 
352
/** Return pixel color - 8-bit depth (3:2:3) */
353
static int getpixel_1byte(int item,unsigned int x, unsigned int y)
354
{
355
    int color = FB(item,fbaddress)[POINTPOS(x, y)];
356
    return (((color >> 5) & 0x7) << (16 + 5)) | (((color >> 3) & 0x3) << (8 + 6)) | ((color & 0x7) << 5);
357
}
358
 
359
/** Fill line with color BGCOLOR */
360
static void clear_line(int item,unsigned int y)
361
{
362
    unsigned int x;
363
    for (x = 0; x < FB(item,xres); x++)
364
        FB(item,putpixel)(item,x, y, FB(item,BGCOLOR));
365
}
366
 
367
 
368
/** Fill screen with background color */
369
static void clear_screen(int item)
370
{
371
    unsigned int y;
372
    for (y = 0; y < FB(item,yres); y++)
373
    {
374
        clear_line(item,y); pl
375
    }  
376
}
377
 
378
 
379
/** Scroll screen one row up */
380
static void scroll_screen(int item)
381
{
382
    unsigned int i;
383
    unsigned int j;
384
 
385
    for(j=0;j<FB(item,yres)-FONT_SCANLINES;j++)
386
        memcpy((void *) FB(item,fbaddress)+j*FB(item,scanline),
387
            (void *) &FB(item,fbaddress)[ROW_BYTES+j*FB(item,scanline)], FB(item,pixelbytes)*FB(item,xres));
388
 
389
    //memcpy((void *) FB(item,fbaddress), (void *) &FB(item,fbaddress)[ROW_BYTES], FB(item,scanline) * FB(item,yres) - ROW_BYTES);
390
 
391
    /* Clear last row */
392
    for (i = 0; i < FONT_SCANLINES; i++)
393
        clear_line(item,(FB(item,rows) - 1) * FONT_SCANLINES + i);
394
}
395
 
396
 
397
static void invert_pixel(int item,unsigned int x, unsigned int y)
398
{
399
    FB(item,putpixel)(item, x, y, ~FB(item,getpixel)(item, x, y));
400
}
401
 
402
 
403
/** Draw one line of glyph at a given position */
404
static void draw_glyph_line(int item,unsigned int glline, unsigned int x, unsigned int y)
405
{
406
    unsigned int i;
407
 
408
    for (i = 0; i < 8; i++)
409
        if (glline & (1 << (7 - i))) {
410
            FB(item,putpixel)(item,x + i, y, FB(item,FGCOLOR));
411
        } else
412
            FB(item,putpixel)(item,x + i, y, FB(item,BGCOLOR));
413
}
414
 
415
/***************************************************************/
416
/* Character-console functions */
417
 
418
/** Draw character at given position */
419
static void draw_glyph(int item,__u8 glyph, unsigned int col, unsigned int row)
420
{
421
    unsigned int y;
422
 
423
    for (y = 0; y < FONT_SCANLINES; y++)
424
        draw_glyph_line(item ,fb_font[glyph * FONT_SCANLINES + y], col * COL_WIDTH, row * FONT_SCANLINES + y);
425
}
426
 
427
/** Invert character at given position */
428
static void invert_char(int item,unsigned int col, unsigned int row)
429
{
430
    unsigned int x;
431
    unsigned int y;
432
 
433
    for (x = 0; x < COL_WIDTH; x++)
434
        for (y = 0; y < FONT_SCANLINES; y++)
435
            invert_pixel(item,col * COL_WIDTH + x, row * FONT_SCANLINES + y);
436
}
437
 
438
/** Draw character at default position */
439
static void draw_char(int item,char chr)
440
{
441
    draw_glyph(item ,chr, FB(item,position) % FB(item,columns), FB(item,position) / FB(item,columns));
442
}
443
 
444
static void draw_logo(int item,unsigned int startx, unsigned int starty)
445
{
446
    unsigned int x;
447
    unsigned int y;
448
    unsigned int byte;
449
    unsigned int rowbytes;
450
 
451
    rowbytes = (helenos_width - 1) / 8 + 1;
452
 
453
    for (y = 0; y < helenos_height; y++)
454
        for (x = 0; x < helenos_width; x++) {
455
            byte = helenos_bits[rowbytes * y + x / 8];
456
            byte >>= x % 8;
457
            if (byte & 1)
458
                FB(item,putpixel)(item,startx + x, starty + y, FB(item,LOGOCOLOR));
459
        }
460
}
461
 
462
/***************************************************************/
463
/* Stdout specific functions */
464
 
465
static void invert_cursor(int item)
466
{
467
    invert_char(item,FB(item,position) % FB(item,columns), FB(item,position) / FB(item,columns));
468
}
469
 
470
/** Print character to screen
471
 *
472
 *  Emulate basic terminal commands
473
 */
474
static void fb_putchar(int item,char ch)
475
{
476
 
477
    switch (ch) {
478
        case '\n':
479
            invert_cursor(item);
480
            FB(item,position) += FB(item,columns);
481
            FB(item,position) -= FB(item,position) % FB(item,columns);
482
            break;
483
        case '\r':
484
            invert_cursor(item);
485
            FB(item,position) -= FB(item,position) % FB(item,columns);
486
            break;
487
        case '\b':
488
            invert_cursor(item);
489
            if (FB(item,position) % FB(item,columns))
490
                FB(item,position)--;
491
            break;
492
        case '\t':
493
            invert_cursor(item);
494
            do {
495
                draw_char(item,' ');
496
                FB(item,position)++;
497
            } while (FB(item,position) % 8);
498
            break;
499
        default:
500
            draw_char(item,ch);
501
            FB(item,position)++;
502
    }
503
 
504
    if (FB(item,position) >= FB(item,columns) * FB(item,rows)) {
505
        FB(item,position) -= FB(item,columns);
506
        scroll_screen(item);
507
    }
508
 
509
    invert_cursor(item);
510
 
511
}
512
 
513
 
514
/** Initialize framebuffer as a chardev output device
515
 *
516
 * @param addr Address of theframebuffer
517
 * @param x    Screen width in pixels
518
 * @param y    Screen height in pixels
519
 * @param bpp  Bits per pixel (8, 16, 24, 32)
520
 * @param scan Bytes per one scanline
521
 *
522
 */
523
void fb_init(int item,__address addr, unsigned int x, unsigned int y, unsigned int bpp, unsigned int scan,
524
    unsigned int BGCOLOR,unsigned int FGCOLOR,unsigned int LOGOCOLOR)
525
{
526
 
527
    if( (graphics_items[item]=malloc(sizeof(framebuffer_descriptor_t))) ==NULL)
528
    {
529
        return;
530
    }
531
 
532
    switch (bpp) {
533
        case 8:
534
            FB(item,putpixel) = putpixel_1byte;
535
            FB(item,getpixel) = getpixel_1byte;
536
            FB(item,pixelbytes) = 1;
537
            break;
538
        case 16:
539
            FB(item,putpixel) = putpixel_2byte;
540
            FB(item,getpixel) = getpixel_2byte;
541
            FB(item,pixelbytes) = 2;
542
            break;
543
        case 24:
544
            FB(item,putpixel) = putpixel_3byte;
545
            FB(item,getpixel) = getpixel_3byte;
546
            FB(item,pixelbytes) = 3;
547
            break;
548
        case 32:
549
            FB(item,putpixel) = putpixel_4byte;
550
            FB(item,getpixel) = getpixel_4byte;
551
            FB(item,pixelbytes) = 4;
552
            break;
553
    }
554
 
555
 
556
    FB(item,fbaddress) = (unsigned char *) addr; pl
557
    FB(item,xres) = x; pl
558
    FB(item,yres) = y; pl
559
    FB(item,scanline) = scan; pl
560
 
561
 
562
    FB(item,rows) = y / FONT_SCANLINES; pl
563
    FB(item,columns) = x / COL_WIDTH; pl
564
 
565
    FB(item,BGCOLOR)=BGCOLOR;
566
    FB(item,FGCOLOR)=FGCOLOR;
567
    FB(item,LOGOCOLOR)=LOGOCOLOR;
568
 
569
 
570
    clear_screen(item); pl
571
    draw_logo(item,FB(item,xres) - helenos_width, 0); pl
572
    invert_cursor(item); pl
573
 
574
}
575
 
576
 
577
static int get_free_item()
578
{
579
    int item;
580
    for(item=0;graphics_items[item]!=NULL;item++);
581
    return (item==GRAPHICS_ITEMS)?EFB:item;
582
}
583
 
584
unsigned int mod_col(unsigned int col,int mod)
585
{
586
    if(mod & 1) col^=0xff;
587
    if(mod & 2) col^=0xff00;
588
    if(mod & 4) col^=0xff0000;
589
    return col;
590
}
591
 
592
 
593
int create_window(int item,unsigned int x, unsigned int y,unsigned int x_size, unsigned int y_size,
594
    unsigned int BGCOLOR,unsigned int FGCOLOR,unsigned int LOGOCOLOR)
595
{
596
    int item_new;
597
 
598
    if(EFB==(item_new=get_free_item()))return EFB;
599
 
600
 
601
    if( (graphics_items[item_new]=malloc(sizeof(framebuffer_descriptor_t))) ==NULL)
602
    {
603
        return EFB;
604
    }
605
 
606
 
607
 
608
    FB(item_new,putpixel) = FB(item,putpixel);
609
    FB(item_new,getpixel) = FB(item,getpixel);
610
    FB(item_new,pixelbytes) = FB(item,pixelbytes);
611
 
612
    FB(item_new,fbaddress) = FB(item,fbaddress) + POINTPOS(x, y) ;
613
    FB(item_new,xres) = x_size;
614
    FB(item_new,yres) = y_size;
615
    FB(item_new,scanline) =  FB(item,scanline);
616
 
617
 
618
    FB(item_new,rows) = y_size / FONT_SCANLINES;
619
    FB(item_new,columns) = x_size / COL_WIDTH;
620
 
621
    FB(item_new,BGCOLOR)=BGCOLOR;
622
    FB(item_new,FGCOLOR)=FGCOLOR;
623
    FB(item_new,LOGOCOLOR)=LOGOCOLOR;
624
 
625
 
626
    clear_screen(item_new);
627
    draw_logo(item_new,FB(item_new,xres) - helenos_width, 0);
628
    invert_cursor(item_new);
629
 
630
    return item_new;
631
}
632
 
633
 
634