/[gxemul]/trunk/src/devices/dev_fb.c
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Revision 10 - (hide annotations)
Mon Oct 8 16:18:27 2007 UTC (11 years, 11 months ago) by dpavlin
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File size: 30285 byte(s)
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.815 2005/06/27 23:04:35 debug Exp $
20050617	Experimenting some more with netbooting OpenBSD/sgi. Adding
		a hack which allows emulated ethernet networks to be
		distributed across multiple emulator processes.
20050618	Minor updates (documentation, dummy YAMON emulation, etc).
20050620	strcpy/strcat -> strlcpy/strlcat updates.
		Some more progress on evbmips (Malta).
20050621	Adding a section to doc/configfiles.html about ethernet
		emulation across multiple hosts.
		Beginning the work on the ARM translation engine (using the
		dynamic-but-not-binary translation method).
		Fixing a bintrans bug: 0x9fc00000 should always be treated as
		PROM area, just as 0xbfc00000 is.
		Minor progress on Malta emulation (the PCI-ISA bus).
20050622	NetBSD/evbmips can now be installed (using another emulated
		machine) and run (including userland and so on). :-)
		Spliting up the bintrans haddr_entry field into two (one for
		read, one for write). Probably not much of a speed increase,
		though.
		Updating some NetBSD 2.0 -> 2.0.2 in the documentation.
20050623	Minor updates (documentation, the TODO file, etc).
		gzipped kernels are now always automagically gunzipped when
		loaded.
20050624	Adding a dummy Playstation Portable (PSP) mode, just barely
		enough to run Hello World (in weird colors :-).
		Removing the -b command line option; old bintrans is enabled
		by default instead. It makes more sense.
		Trying to finally fix the non-working performance measurement
		thing (instr/second etc).
20050625	Continuing on the essential basics for ARM emulation. Two
		instructions seem to work, a branch and a simple "mov". (The
		mov arguments are not correct yet.) Performance is definitely
		reasonable.
		Various other minor updates.
		Adding the ARM "bl" instruction.
		Adding support for combining multiple ARM instructions into one
		function call. ("mov" + "mov" is the only one implemented so
		far, but it seems to work.)
		Cleaning up some IP32 interrupt things (crime/mace); disabling
		the PS/2 keyboard controller on IP32, so that NetBSD/sgimips
		boots into userland again.
20050626	Finally! NetBSD/sgimips netboots. Adding instructions to
		doc/guestoses.html on how to set up an nfs server etc.
		Various other minor fixes.
		Playstation Portable ".pbp" files can now be used directly.
		(The ELF part of the .pbp is extracted transparently.)
		Converting some sprintf -> snprintf.
		Adding some more instructions to the ARM disassembler.
20050627	More ARM updates. Adding some simple ldr(b), str(b),
		cmps, and conditional branch instructions, enough to run
		a simple Hello World program.
		All ARM instructions are now inlined/generated for all possible
		condition codes.
		Adding add and sub, and more load/store instructions.
		Removing dummy files: cpu_alpha.c, cpu_hppa.c, and cpu_sparc.c.
		Some minor documentation updates; preparing for a 0.3.4
		release. Updating some URLs.

==============  RELEASE 0.3.4  ==============


1 dpavlin 4 /*
2     * Copyright (C) 2003-2005 Anders Gavare. All rights reserved.
3     *
4     * Redistribution and use in source and binary forms, with or without
5     * modification, are permitted provided that the following conditions are met:
6     *
7     * 1. Redistributions of source code must retain the above copyright
8     * notice, this list of conditions and the following disclaimer.
9     * 2. Redistributions in binary form must reproduce the above copyright
10     * notice, this list of conditions and the following disclaimer in the
11     * documentation and/or other materials provided with the distribution.
12     * 3. The name of the author may not be used to endorse or promote products
13     * derived from this software without specific prior written permission.
14     *
15     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18     * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25     * SUCH DAMAGE.
26     *
27     *
28 dpavlin 10 * $Id: dev_fb.c,v 1.99 2005/06/26 13:49:06 debug Exp $
29 dpavlin 4 *
30     * Generic framebuffer device.
31     *
32     * DECstation VFB01 monochrome framebuffer, 1024x864
33     * DECstation VFB02 8-bit color framebuffer, 1024x864
34     * DECstation Maxine, 1024x768 8-bit color
35     * HPCmips framebuffer
36     * Playstation 2 (24-bit color)
37     * generic (any resolution, several bit depths possible)
38     *
39     *
40     * TODO: There is still a bug when redrawing the cursor. The underlying
41     * image is moved 1 pixel (?), or something like that.
42     *
43     * TODO: This should actually be independant of X11, but that
44     * might be too hard to do right now.
45     *
46     * TODO: playstation 2 pixels are stored in another format, actually
47     */
48    
49     #include <stdio.h>
50     #include <stdlib.h>
51     #include <string.h>
52    
53     #include "console.h"
54     #include "cpu.h"
55     #include "devices.h"
56     #include "machine.h"
57     #include "memory.h"
58     #include "misc.h"
59     #include "x11.h"
60    
61     #ifdef WITH_X11
62     #include <X11/Xlib.h>
63     #include <X11/Xos.h>
64     #include <X11/Xutil.h>
65     #endif
66    
67    
68 dpavlin 10 #define FB_TICK_SHIFT 18
69 dpavlin 4
70     #define LOGO_XSIZE 256
71     #define LOGO_YSIZE 256
72     #define LOGO_BOTTOM_MARGIN 60
73     /* This must be a 256*256 pixels P4 ppm: */
74     #include "fb_logo.c"
75     unsigned char *fb_logo = fb_logo_ppm + 11;
76    
77    
78     /* #define FB_DEBUG */
79    
80     /*
81     * set_grayscale_palette():
82     *
83     * Fill d->rgb_palette with grayscale values. ncolors should
84     * be something like 2, 4, 16, or 256.
85     */
86     void set_grayscale_palette(struct vfb_data *d, int ncolors)
87     {
88     int i, gray;
89    
90     for (i=0; i<256; i++) {
91     gray = 255*i/(ncolors-1);
92     d->rgb_palette[i*3 + 0] = gray;
93     d->rgb_palette[i*3 + 1] = gray;
94     d->rgb_palette[i*3 + 2] = gray;
95     }
96     }
97    
98    
99     /*
100     * set_blackwhite_palette():
101     *
102     * Set color 0 = black, all others to white.
103     */
104     void set_blackwhite_palette(struct vfb_data *d, int ncolors)
105     {
106     int i, gray;
107    
108     for (i=0; i<256; i++) {
109     gray = i==0? 0 : 255;
110     d->rgb_palette[i*3 + 0] = gray;
111     d->rgb_palette[i*3 + 1] = gray;
112     d->rgb_palette[i*3 + 2] = gray;
113     }
114     }
115    
116    
117     /*
118 dpavlin 6 * dev_fb_resize():
119     *
120     * Resize a framebuffer window. (This functionality is probably a bit buggy,
121     * because I didn't think of including it from the start.)
122     */
123     void dev_fb_resize(struct vfb_data *d, int new_xsize, int new_ysize)
124     {
125     unsigned char *new_framebuffer;
126     int y, new_bytes_per_line;
127     size_t size;
128    
129     if (d == NULL) {
130     fatal("dev_fb_resize(): d == NULL\n");
131     return;
132     }
133    
134     new_bytes_per_line = new_xsize * d->bit_depth / 8;
135     size = new_ysize * new_bytes_per_line;
136    
137     new_framebuffer = malloc(size);
138     if (new_framebuffer == NULL) {
139     fprintf(stderr, "dev_fb_resize(): out of memory\n");
140     exit(1);
141     }
142    
143     /* Copy the old framebuffer to the new: */
144     if (d->framebuffer != NULL) {
145     for (y=0; y<new_ysize; y++) {
146     size_t fromofs = d->bytes_per_line * y;
147     size_t toofs = new_bytes_per_line * y;
148     size_t len_to_copy = d->bytes_per_line <
149     new_bytes_per_line? d->bytes_per_line
150     : new_bytes_per_line;
151     memset(new_framebuffer + toofs, 0, new_bytes_per_line);
152     if (y < d->x11_ysize)
153     memmove(new_framebuffer + toofs,
154     d->framebuffer + fromofs, len_to_copy);
155     }
156    
157     free(d->framebuffer);
158     }
159    
160     d->framebuffer = new_framebuffer;
161     d->framebuffer_size = size;
162    
163     if (new_xsize > d->x11_xsize || new_ysize > d->x11_ysize) {
164     d->update_x1 = d->update_y1 = 0;
165     d->update_x2 = new_xsize - 1;
166     d->update_y2 = new_ysize - 1;
167     }
168    
169     d->bytes_per_line = new_bytes_per_line;
170     d->x11_xsize = d->visible_xsize = new_xsize;
171     d->x11_ysize = d->visible_ysize = new_ysize;
172    
173     #ifdef WITH_X11
174     if (d->fb_window != NULL)
175     x11_fb_resize(d->fb_window, new_xsize, new_ysize);
176     #endif
177     }
178    
179    
180     /*
181 dpavlin 4 * dev_fb_setcursor():
182     */
183     void dev_fb_setcursor(struct vfb_data *d, int cursor_x, int cursor_y, int on,
184     int cursor_xsize, int cursor_ysize)
185     {
186     if (cursor_x < 0)
187     cursor_x = 0;
188     if (cursor_y < 0)
189     cursor_y = 0;
190     if (cursor_x + cursor_xsize >= d->xsize)
191     cursor_x = d->xsize - cursor_xsize;
192     if (cursor_y + cursor_ysize >= d->ysize)
193     cursor_y = d->ysize - cursor_ysize;
194    
195     #ifdef WITH_X11
196     if (d->fb_window != NULL) {
197     d->fb_window->cursor_x = cursor_x;
198     d->fb_window->cursor_y = cursor_y;
199     d->fb_window->cursor_on = on;
200     d->fb_window->cursor_xsize = cursor_xsize;
201     d->fb_window->cursor_ysize = cursor_ysize;
202     }
203     #endif
204    
205     if (d->fb_window != NULL)
206     console_set_framebuffer_mouse(cursor_x, cursor_y,
207     d->fb_window->fb_number);
208    
209     /* debug("dev_fb_setcursor(%i,%i, size %i,%i, on=%i)\n",
210     cursor_x, cursor_y, cursor_xsize, cursor_ysize, on); */
211     }
212    
213    
214     /*
215     * framebuffer_blockcopyfill():
216     *
217     * This function should be used by devices that are capable of doing
218     * block copy/fill.
219     *
220     * If fillflag is non-zero, then fill_[rgb] should contain the color
221     * with which to fill.
222     *
223     * If fillflag is zero, copy mode is used, and from_[xy] should contain
224     * the offset on the framebuffer where we should copy from.
225     *
226     * NOTE: Overlapping copies are undefined!
227     */
228     void framebuffer_blockcopyfill(struct vfb_data *d, int fillflag, int fill_r,
229     int fill_g, int fill_b, int x1, int y1, int x2, int y2,
230     int from_x, int from_y)
231     {
232     int y;
233     long from_ofs, dest_ofs, linelen;
234    
235     if (fillflag)
236     debug("framebuffer_blockcopyfill(FILL, %i,%i, %i,%i, "
237     "color %i,%i,%i)\n", x1,y1, x2,y2, fill_r, fill_g, fill_b);
238     else
239     debug("framebuffer_blockcopyfill(COPY, %i,%i, %i,%i, from "
240     "%i,%i)\n", x1,y1, x2,y2, from_x,from_y);
241    
242     /* Clip x: */
243     if (x1 < 0) x1 = 0;
244     if (x1 >= d->xsize) x1 = d->xsize-1;
245     if (x2 < 0) x2 = 0;
246     if (x2 >= d->xsize) x2 = d->xsize-1;
247    
248     dest_ofs = d->bytes_per_line * y1 + (d->bit_depth/8) * x1;
249     linelen = (x2-x1 + 1) * (d->bit_depth/8);
250     /* NOTE: linelen is nr of bytes, not pixels */
251    
252     if (fillflag) {
253     for (y=y1; y<=y2; y++) {
254     if (y>=0 && y<d->ysize) {
255     int x;
256     char buf[8192 * 3];
257     if (d->bit_depth == 24)
258     for (x=0; x<linelen; x+=3) {
259     buf[x] = fill_r;
260     buf[x+1] = fill_g;
261     buf[x+2] = fill_b;
262     }
263     else
264     printf("TODO: fill for non-24-bit"
265     " modes\n");
266    
267     memmove(d->framebuffer + dest_ofs, buf,
268     linelen);
269     }
270    
271     dest_ofs += d->bytes_per_line;
272     }
273     } else {
274     from_ofs = d->bytes_per_line * from_y +
275     (d->bit_depth/8) * from_x;
276    
277     for (y=y1; y<=y2; y++) {
278     if (y>=0 && y<d->ysize)
279     memmove(d->framebuffer + dest_ofs,
280     d->framebuffer + from_ofs, linelen);
281    
282     from_ofs += d->bytes_per_line;
283     dest_ofs += d->bytes_per_line;
284     }
285     }
286    
287     if (x1 < d->update_x1 || d->update_x1 == -1) d->update_x1 = x1;
288     if (x1 > d->update_x2 || d->update_x2 == -1) d->update_x2 = x1;
289     if (x2 < d->update_x1 || d->update_x1 == -1) d->update_x1 = x2;
290     if (x2 > d->update_x2 || d->update_x2 == -1) d->update_x2 = x2;
291    
292     if (y1 < d->update_y1 || d->update_y1 == -1) d->update_y1 = y1;
293     if (y1 > d->update_y2 || d->update_y2 == -1) d->update_y2 = y1;
294     if (y2 < d->update_y1 || d->update_y1 == -1) d->update_y1 = y2;
295     if (y2 > d->update_y2 || d->update_y2 == -1) d->update_y2 = y2;
296     }
297    
298    
299     #ifdef WITH_X11
300     #define macro_put_pixel() { \
301     /* Combine the color into an X11 long and display it: */ \
302     /* TODO: construct color in a more portable way: */ \
303     switch (d->fb_window->x11_screen_depth) { \
304     case 24: \
305     if (d->fb_window->fb_ximage->byte_order) \
306     color = (b << 16) + (g << 8) + r; \
307     else \
308     color = (r << 16) + (g << 8) + b; \
309     break; \
310     case 16: \
311     r >>= 3; g >>= 2; b >>= 3; \
312     if (d->fb_window->fb_ximage->byte_order) { \
313     /* Big endian 16-bit X server: */ \
314     static int first = 1; \
315     if (first) { \
316     fprintf(stderr, "\n*** Please report to the author whether 16-bit X11 colors are rendered correctly or not!\n\n"); \
317     first = 0; \
318     } \
319     color = (b << 11) + (g << 5) + r; \
320     } else { \
321     /* Little endian (eg PC) X servers: */ \
322     color = (r << 11) + (g << 5) + b; \
323     } \
324     break; \
325     case 15: \
326     r >>= 3; g >>= 3; b >>= 3; \
327     if (d->fb_window->fb_ximage->byte_order) { \
328     /* Big endian 15-bit X server: */ \
329     static int first = 1; \
330     if (first) { \
331     fprintf(stderr, "\n*** Please report to the author whether 15-bit X11 colors are rendered correctly or not!\n\n"); \
332     first = 0; \
333     } \
334     color = (b << 10) + (g << 5) + r; \
335     } else { \
336     /* Little endian (eg PC) X servers: */ \
337     color = (r << 10) + (g << 5) + b; \
338     } \
339     break; \
340     default: \
341     color = d->fb_window->x11_graycolor[15 * (r + g + b) / (255 * 3)].pixel; \
342     } \
343     if (x>=0 && x<d->x11_xsize && y>=0 && y<d->x11_ysize) \
344     XPutPixel(d->fb_window->fb_ximage, x, y, color); \
345     }
346     #else
347     /* If not WITH_X11: */
348     #define macro_put_pixel() { }
349     #endif
350    
351    
352     /*
353     * update_framebuffer():
354     *
355     * The framebuffer memory has been updated. This function tries to make
356     * sure that the XImage is also updated (1 or more pixels).
357     */
358     void update_framebuffer(struct vfb_data *d, int addr, int len)
359     {
360     int x, y, pixel, npixels;
361     long color_r, color_g, color_b;
362     #ifdef WITH_X11
363     long color;
364     #endif
365     int scaledown = d->vfb_scaledown;
366     int scaledownXscaledown = 1;
367    
368     if (scaledown == 1) {
369     /* Which framebuffer pixel does addr correspond to? */
370     pixel = addr * 8 / d->bit_depth;
371     y = pixel / d->xsize;
372     x = pixel % d->xsize;
373    
374     /* How many framebuffer pixels? */
375     npixels = len * 8 / d->bit_depth;
376     if (npixels == 0)
377     npixels = 1;
378    
379     if (d->bit_depth < 8) {
380     for (pixel=0; pixel<npixels; pixel++) {
381     int fb_addr, c, r, g, b;
382     color_r = color_g = color_b = 0;
383    
384     fb_addr = (y * d->xsize + x) * d->bit_depth;
385     /* fb_addr is now which _bit_ in
386     the framebuffer */
387    
388     c = d->framebuffer[fb_addr >> 3];
389     fb_addr &= 7;
390    
391     /* HPCmips is reverse: */
392     if (d->vfb_type == VFB_HPCMIPS)
393     fb_addr = 8 - d->bit_depth - fb_addr;
394    
395     c = (c >> fb_addr) & ((1<<d->bit_depth) - 1);
396     /* c <<= (8 - d->bit_depth); */
397    
398     r = d->rgb_palette[c*3 + 0];
399     g = d->rgb_palette[c*3 + 1];
400     b = d->rgb_palette[c*3 + 2];
401    
402     macro_put_pixel();
403     x++;
404     }
405     } else if (d->bit_depth == 8) {
406     for (pixel=0; pixel<npixels; pixel++) {
407     int fb_addr, c, r, g, b;
408     color_r = color_g = color_b = 0;
409    
410     fb_addr = y * d->xsize + x;
411     /* fb_addr is now which byte in framebuffer */
412     c = d->framebuffer[fb_addr];
413     r = d->rgb_palette[c*3 + 0];
414     g = d->rgb_palette[c*3 + 1];
415     b = d->rgb_palette[c*3 + 2];
416    
417     macro_put_pixel();
418     x++;
419     }
420     } else { /* d->bit_depth > 8 */
421     for (pixel=0; pixel<npixels; pixel++) {
422     int fb_addr, r, g, b;
423     color_r = color_g = color_b = 0;
424    
425     fb_addr = (y * d->xsize + x) * d->bit_depth;
426     /* fb_addr is now which byte in framebuffer */
427    
428     /* > 8 bits color. */
429     fb_addr >>= 3;
430     switch (d->bit_depth) {
431     case 24:
432     r = d->framebuffer[fb_addr];
433     g = d->framebuffer[fb_addr + 1];
434     b = d->framebuffer[fb_addr + 2];
435     break;
436     /* TODO: copy to the scaledown code below */
437     case 16:
438     if (d->vfb_type == VFB_HPCMIPS) {
439     b = d->framebuffer[fb_addr] +
440     (d->framebuffer[fb_addr+1] << 8);
441    
442     if (d->color32k) {
443     r = b >> 11;
444     g = b >> 5;
445     r = r & 31;
446     g = (g & 31) * 2;
447     b = b & 31;
448 dpavlin 10 } else if (d->psp_15bit) {
449     int tmp;
450     r = (b >> 10) & 0x1f;
451     g = (b >> 5) & 0x1f;
452     b = b & 0x1f;
453     g <<= 1;
454     tmp = r; r = b; b = tmp;
455 dpavlin 4 } else {
456     r = (b >> 11) & 0x1f;
457     g = (b >> 5) & 0x3f;
458     b = b & 0x1f;
459     }
460     } else {
461     r = d->framebuffer[fb_addr] >> 3;
462     g = (d->framebuffer[fb_addr] << 5) +
463     (d->framebuffer[fb_addr + 1] >> 5);
464     b = d->framebuffer[fb_addr + 1] & 0x1f;
465     }
466    
467     r *= 8;
468     g *= 4;
469     b *= 8;
470     break;
471     default:
472     r = g = b = random() & 255;
473     }
474    
475     macro_put_pixel();
476     x++;
477     }
478     }
479    
480     return;
481     }
482    
483     /* scaledown != 1: */
484    
485     scaledown = d->vfb_scaledown;
486     scaledownXscaledown = scaledown * scaledown;
487    
488     /* Which framebuffer pixel does addr correspond to? */
489     pixel = addr * 8 / d->bit_depth;
490     y = pixel / d->xsize;
491     x = pixel % d->xsize;
492    
493     /* How many framebuffer pixels? */
494     npixels = len * 8 / d->bit_depth;
495    
496     /* Which x11 pixel? */
497     x /= scaledown;
498     y /= scaledown;
499    
500     /* How many x11 pixels: */
501     npixels /= scaledown;
502     if (npixels == 0)
503     npixels = 1;
504    
505     if (d->bit_depth < 8) {
506     for (pixel=0; pixel<npixels; pixel++) {
507     int subx, suby, r, g, b;
508     color_r = color_g = color_b = 0;
509     for (suby=0; suby<scaledown; suby++)
510     for (subx=0; subx<scaledown; subx++) {
511     int fb_x, fb_y, fb_addr, c;
512    
513     fb_x = x * scaledown + subx;
514     fb_y = y * scaledown + suby;
515     fb_addr = fb_y * d->xsize + fb_x;
516     fb_addr = fb_addr * d->bit_depth;
517     /* fb_addr is now which _bit_ in
518     the framebuffer */
519    
520     c = d->framebuffer[fb_addr >> 3];
521     fb_addr &= 7;
522    
523     /* HPCmips is reverse: */
524     if (d->vfb_type == VFB_HPCMIPS)
525     fb_addr = 8 - d->bit_depth - fb_addr;
526    
527     c = (c >> fb_addr) & ((1<<d->bit_depth) - 1);
528     /* c <<= (8 - d->bit_depth); */
529    
530     r = d->rgb_palette[c*3 + 0];
531     g = d->rgb_palette[c*3 + 1];
532     b = d->rgb_palette[c*3 + 2];
533    
534     color_r += r;
535     color_g += g;
536     color_b += b;
537     }
538    
539     r = color_r / scaledownXscaledown;
540     g = color_g / scaledownXscaledown;
541     b = color_b / scaledownXscaledown;
542     macro_put_pixel();
543     x++;
544     }
545     } else if (d->bit_depth == 8) {
546     for (pixel=0; pixel<npixels; pixel++) {
547     int subx, suby, r, g, b;
548     color_r = color_g = color_b = 0;
549     for (suby=0; suby<scaledown; suby++)
550     for (subx=0; subx<scaledown; subx++) {
551     int fb_x, fb_y, fb_addr, c;
552    
553     fb_x = x * scaledown + subx;
554     fb_y = y * scaledown + suby;
555     fb_addr = fb_y * d->xsize + fb_x;
556     /* fb_addr is which _byte_ in framebuffer */
557     c = d->framebuffer[fb_addr] * 3;
558     r = d->rgb_palette[c + 0];
559     g = d->rgb_palette[c + 1];
560     b = d->rgb_palette[c + 2];
561     color_r += r;
562     color_g += g;
563     color_b += b;
564     }
565    
566     r = color_r / scaledownXscaledown;
567     g = color_g / scaledownXscaledown;
568     b = color_b / scaledownXscaledown;
569     macro_put_pixel();
570     x++;
571     }
572     } else {
573     /* Generic > 8 bit bit-depth: */
574     for (pixel=0; pixel<npixels; pixel++) {
575     int subx, suby, r, g, b;
576     color_r = color_g = color_b = 0;
577     for (suby=0; suby<scaledown; suby++)
578     for (subx=0; subx<scaledown; subx++) {
579     int fb_x, fb_y, fb_addr;
580    
581     fb_x = x * scaledown + subx;
582     fb_y = y * scaledown + suby;
583     fb_addr = fb_y * d->xsize + fb_x;
584     fb_addr = (fb_addr * d->bit_depth) >> 3;
585     /* fb_addr is which _byte_ in framebuffer */
586    
587     /* > 8 bits color. */
588     switch (d->bit_depth) {
589     case 24:
590     r = d->framebuffer[fb_addr];
591     g = d->framebuffer[fb_addr + 1];
592     b = d->framebuffer[fb_addr + 2];
593     break;
594     default:
595     r = g = b = random() & 255;
596     }
597     color_r += r;
598     color_g += g;
599     color_b += b;
600     }
601     r = color_r / scaledownXscaledown;
602     g = color_g / scaledownXscaledown;
603     b = color_b / scaledownXscaledown;
604     macro_put_pixel();
605     x++;
606     }
607     }
608     }
609    
610    
611     /*
612     * dev_fb_tick():
613     *
614     */
615     void dev_fb_tick(struct cpu *cpu, void *extra)
616     {
617     struct vfb_data *d = extra;
618     #ifdef WITH_X11
619     int need_to_flush_x11 = 0;
620     int need_to_redraw_cursor = 0;
621     #endif
622    
623     if (!cpu->machine->use_x11)
624     return;
625    
626     #ifdef BINTRANS
627     do {
628     uint64_t low = -1, high;
629     int x, y;
630    
631     memory_device_bintrans_access(cpu, cpu->mem,
632     extra, &low, &high);
633     if ((int64_t)low == -1)
634     break;
635    
636     /* printf("low=%016llx high=%016llx\n",
637     (long long)low, (long long)high); */
638    
639     x = (low % d->bytes_per_line) * 8 / d->bit_depth;
640     y = low / d->bytes_per_line;
641     if (x < d->update_x1 || d->update_x1 == -1)
642     d->update_x1 = x;
643     if (x > d->update_x2 || d->update_x2 == -1)
644     d->update_x2 = x;
645     if (y < d->update_y1 || d->update_y1 == -1)
646     d->update_y1 = y;
647     if (y > d->update_y2 || d->update_y2 == -1)
648     d->update_y2 = y;
649    
650     x = ((low+7) % d->bytes_per_line) * 8 / d->bit_depth;
651     y = (low+7) / d->bytes_per_line;
652     if (x < d->update_x1 || d->update_x1 == -1)
653     d->update_x1 = x;
654     if (x > d->update_x2 || d->update_x2 == -1)
655     d->update_x2 = x;
656     if (y < d->update_y1 || d->update_y1 == -1)
657     d->update_y1 = y;
658     if (y > d->update_y2 || d->update_y2 == -1)
659     d->update_y2 = y;
660    
661     x = (high % d->bytes_per_line) * 8 / d->bit_depth;
662     y = high / d->bytes_per_line;
663     if (x < d->update_x1 || d->update_x1 == -1)
664     d->update_x1 = x;
665     if (x > d->update_x2 || d->update_x2 == -1)
666     d->update_x2 = x;
667     if (y < d->update_y1 || d->update_y1 == -1)
668     d->update_y1 = y;
669     if (y > d->update_y2 || d->update_y2 == -1)
670     d->update_y2 = y;
671    
672     x = ((high+7) % d->bytes_per_line) * 8 / d->bit_depth;
673     y = (high+7) / d->bytes_per_line;
674     if (x < d->update_x1 || d->update_x1 == -1)
675     d->update_x1 = x;
676     if (x > d->update_x2 || d->update_x2 == -1)
677     d->update_x2 = x;
678     if (y < d->update_y1 || d->update_y1 == -1)
679     d->update_y1 = y;
680     if (y > d->update_y2 || d->update_y2 == -1)
681     d->update_y2 = y;
682    
683     /*
684     * An update covering more than one line will automatically
685     * force an update of all the affected lines:
686     */
687     if (d->update_y1 != d->update_y2) {
688     d->update_x1 = 0;
689     d->update_x2 = d->xsize-1;
690     }
691     } while (0);
692     #endif
693    
694     #ifdef WITH_X11
695     /* Do we need to redraw the cursor? */
696     if (d->fb_window->cursor_on != d->fb_window->OLD_cursor_on ||
697     d->fb_window->cursor_x != d->fb_window->OLD_cursor_x ||
698     d->fb_window->cursor_y != d->fb_window->OLD_cursor_y ||
699     d->fb_window->cursor_xsize != d->fb_window->OLD_cursor_xsize ||
700     d->fb_window->cursor_ysize != d->fb_window->OLD_cursor_ysize)
701     need_to_redraw_cursor = 1;
702    
703     if (d->update_x2 != -1) {
704     if ( (d->update_x1 >= d->fb_window->OLD_cursor_x &&
705     d->update_x1 < (d->fb_window->OLD_cursor_x + d->fb_window->OLD_cursor_xsize)) ||
706     (d->update_x2 >= d->fb_window->OLD_cursor_x &&
707     d->update_x2 < (d->fb_window->OLD_cursor_x + d->fb_window->OLD_cursor_xsize)) ||
708     (d->update_x1 < d->fb_window->OLD_cursor_x &&
709     d->update_x2 >= (d->fb_window->OLD_cursor_x + d->fb_window->OLD_cursor_xsize)) ) {
710     if ( (d->update_y1 >= d->fb_window->OLD_cursor_y &&
711     d->update_y1 < (d->fb_window->OLD_cursor_y + d->fb_window->OLD_cursor_ysize)) ||
712     (d->update_y2 >= d->fb_window->OLD_cursor_y &&
713     d->update_y2 < (d->fb_window->OLD_cursor_y + d->fb_window->OLD_cursor_ysize)) ||
714     (d->update_y1 < d->fb_window->OLD_cursor_y &&
715     d->update_y2 >= (d->fb_window->OLD_cursor_y + d->fb_window->OLD_cursor_ysize)) )
716     need_to_redraw_cursor = 1;
717     }
718     }
719    
720     if (need_to_redraw_cursor) {
721     /* Remove old cursor, if any: */
722     if (d->fb_window->OLD_cursor_on) {
723     XPutImage(d->fb_window->x11_display,
724     d->fb_window->x11_fb_window,
725     d->fb_window->x11_fb_gc, d->fb_window->fb_ximage,
726     d->fb_window->OLD_cursor_x/d->vfb_scaledown,
727     d->fb_window->OLD_cursor_y/d->vfb_scaledown,
728     d->fb_window->OLD_cursor_x/d->vfb_scaledown,
729     d->fb_window->OLD_cursor_y/d->vfb_scaledown,
730     d->fb_window->OLD_cursor_xsize/d->vfb_scaledown + 1,
731     d->fb_window->OLD_cursor_ysize/d->vfb_scaledown + 1);
732     }
733     }
734     #endif
735    
736     if (d->update_x2 != -1) {
737     int y, addr, addr2, q = d->vfb_scaledown;
738    
739     if (d->update_x1 >= d->visible_xsize) d->update_x1 = d->visible_xsize - 1;
740     if (d->update_x2 >= d->visible_xsize) d->update_x2 = d->visible_xsize - 1;
741     if (d->update_y1 >= d->visible_ysize) d->update_y1 = d->visible_ysize - 1;
742     if (d->update_y2 >= d->visible_ysize) d->update_y2 = d->visible_ysize - 1;
743    
744     /* Without these, we might miss the right most / bottom pixel: */
745     d->update_x2 += (q - 1);
746     d->update_y2 += (q - 1);
747    
748     d->update_x1 = d->update_x1 / q * q;
749     d->update_x2 = d->update_x2 / q * q;
750     d->update_y1 = d->update_y1 / q * q;
751     d->update_y2 = d->update_y2 / q * q;
752    
753     addr = d->update_y1 * d->bytes_per_line + d->update_x1 * d->bit_depth / 8;
754     addr2 = d->update_y1 * d->bytes_per_line + d->update_x2 * d->bit_depth / 8;
755    
756     for (y=d->update_y1; y<=d->update_y2; y+=q) {
757     update_framebuffer(d, addr, addr2 - addr);
758     addr += d->bytes_per_line * q;
759     addr2 += d->bytes_per_line * q;
760     }
761    
762     #ifdef WITH_X11
763     XPutImage(d->fb_window->x11_display, d->fb_window->x11_fb_window, d->fb_window->x11_fb_gc, d->fb_window->fb_ximage,
764     d->update_x1/d->vfb_scaledown, d->update_y1/d->vfb_scaledown,
765     d->update_x1/d->vfb_scaledown, d->update_y1/d->vfb_scaledown,
766     (d->update_x2 - d->update_x1)/d->vfb_scaledown + 1,
767     (d->update_y2 - d->update_y1)/d->vfb_scaledown + 1);
768    
769     need_to_flush_x11 = 1;
770     #endif
771    
772     d->update_x1 = d->update_y1 = 99999;
773     d->update_x2 = d->update_y2 = -1;
774     }
775    
776     #ifdef WITH_X11
777     if (need_to_redraw_cursor) {
778     /* Paint new cursor: */
779     if (d->fb_window->cursor_on) {
780     x11_redraw_cursor(cpu->machine, d->fb_window->fb_number);
781     d->fb_window->OLD_cursor_on = d->fb_window->cursor_on;
782     d->fb_window->OLD_cursor_x = d->fb_window->cursor_x;
783     d->fb_window->OLD_cursor_y = d->fb_window->cursor_y;
784     d->fb_window->OLD_cursor_xsize = d->fb_window->cursor_xsize;
785     d->fb_window->OLD_cursor_ysize = d->fb_window->cursor_ysize;
786     }
787     }
788     #endif
789    
790     #ifdef WITH_X11
791     if (need_to_flush_x11)
792     XFlush(d->fb_window->x11_display);
793     #endif
794     }
795    
796    
797     /*
798     * dev_fb_access():
799     */
800     int dev_fb_access(struct cpu *cpu, struct memory *mem,
801     uint64_t relative_addr, unsigned char *data, size_t len,
802     int writeflag, void *extra)
803     {
804     struct vfb_data *d = extra;
805     int i;
806    
807     #ifdef FB_DEBUG
808     if (writeflag == MEM_WRITE) { if (data[0]) {
809     fatal("[ dev_fb: write to addr=%08lx, data = ",
810     (long)relative_addr);
811     for (i=0; i<len; i++)
812     fatal("%02x ", data[i]);
813     fatal("]\n");
814     } else {
815     fatal("[ dev_fb: read from addr=%08lx, data = ",
816     (long)relative_addr);
817     for (i=0; i<len; i++)
818     fatal("%02x ", d->framebuffer[relative_addr + i]);
819     fatal("]\n");
820     }
821     #endif
822    
823 dpavlin 6 if (relative_addr >= d->framebuffer_size)
824     return 0;
825    
826 dpavlin 4 /* See if a write actually modifies the framebuffer contents: */
827     if (writeflag == MEM_WRITE) {
828     for (i=0; i<len; i++) {
829     if (data[i] != d->framebuffer[relative_addr + i])
830     break;
831    
832     /* If all bytes are equal to what is already stored
833     in the framebuffer, then simply return: */
834     if (i==len-1)
835     return 1;
836     }
837     }
838    
839     /*
840     * If the framebuffer is modified, then we should keep a track
841     * of which area(s) we modify, so that the display isn't updated
842     * unnecessarily.
843     */
844     if (writeflag == MEM_WRITE && cpu->machine->use_x11) {
845     int x, y, x2,y2;
846    
847     x = (relative_addr % d->bytes_per_line) * 8 / d->bit_depth;
848     y = relative_addr / d->bytes_per_line;
849     x2 = ((relative_addr + len) % d->bytes_per_line)
850     * 8 / d->bit_depth;
851     y2 = (relative_addr + len) / d->bytes_per_line;
852    
853     if (x < d->update_x1 || d->update_x1 == -1)
854     d->update_x1 = x;
855     if (x > d->update_x2 || d->update_x2 == -1)
856     d->update_x2 = x;
857    
858     if (y < d->update_y1 || d->update_y1 == -1)
859     d->update_y1 = y;
860     if (y > d->update_y2 || d->update_y2 == -1)
861     d->update_y2 = y;
862    
863     if (x2 < d->update_x1 || d->update_x1 == -1)
864     d->update_x1 = x2;
865     if (x2 > d->update_x2 || d->update_x2 == -1)
866     d->update_x2 = x2;
867    
868     if (y2 < d->update_y1 || d->update_y1 == -1)
869     d->update_y1 = y2;
870     if (y2 > d->update_y2 || d->update_y2 == -1)
871     d->update_y2 = y2;
872    
873     /*
874     * An update covering more than one line will automatically
875     * force an update of all the affected lines:
876     */
877     if (y != y2) {
878     d->update_x1 = 0;
879     d->update_x2 = d->xsize-1;
880     }
881     }
882    
883     /*
884     * Read from/write to the framebuffer:
885     * (TODO: take the color_plane_mask into account)
886     *
887     * Calling memcpy() is probably overkill, as it usually is just one
888     * or a few bytes that are read/written at a time.
889     */
890     if (writeflag == MEM_WRITE) {
891     if (len > 8)
892     memcpy(d->framebuffer + relative_addr, data, len);
893     else
894     for (i=0; i<len; i++)
895     d->framebuffer[relative_addr + i] = data[i];
896     } else {
897     if (len > 8)
898     memcpy(data, d->framebuffer + relative_addr, len);
899     else
900     for (i=0; i<len; i++)
901     data[i] = d->framebuffer[relative_addr + i];
902     }
903    
904     return 1;
905     }
906    
907    
908     /*
909     * dev_fb_init():
910     *
911 dpavlin 10 * This function is big and ugly, but the point is to initialize a framebuffer
912     * device. :-)
913     *
914     * visible_xsize and visible_ysize are the sizes of the visible display area.
915     * xsize and ysize tell how much memory is actually allocated (for example
916     * visible_xsize could be 640, but xsize could be 1024, for better alignment).
917     *
918     * vfb_type is useful for selecting special features.
919     *
920     * type = VFB_GENERIC is the most useful type, especially when bit_depth = 24.
921     *
922     * VFB_DEC_VFB01, _VFB02, and VFB_DEC_MAXINE are DECstation specific.
923     *
924     * If type is VFB_HPCMIPS, then color encoding differs from the generic case.
925     *
926     * If bit_depth = -15 (note the minus sign), then a special hack is used for
927     * the Playstation Portable's 5-bit R, 5-bit G, 5-bit B.
928 dpavlin 4 */
929     struct vfb_data *dev_fb_init(struct machine *machine, struct memory *mem,
930     uint64_t baseaddr, int vfb_type, int visible_xsize, int visible_ysize,
931     int xsize, int ysize, int bit_depth, char *name, int logo)
932     {
933     struct vfb_data *d;
934 dpavlin 10 size_t size, nlen;
935     int x, y, flags;
936 dpavlin 4 char title[400];
937     char *name2;
938    
939     d = malloc(sizeof(struct vfb_data));
940     if (d == NULL) {
941     fprintf(stderr, "out of memory\n");
942     exit(1);
943     }
944     memset(d, 0, sizeof(struct vfb_data));
945    
946     d->vfb_type = vfb_type;
947    
948     /* Defaults: */
949     d->xsize = xsize; d->visible_xsize = visible_xsize;
950     d->ysize = ysize; d->visible_ysize = visible_ysize;
951    
952     d->bit_depth = bit_depth;
953    
954     if (bit_depth == 15) {
955     d->color32k = 1;
956     bit_depth = d->bit_depth = 16;
957 dpavlin 10 } else if (bit_depth == -15) {
958     d->psp_15bit = 1;
959     bit_depth = d->bit_depth = 16;
960 dpavlin 4 }
961    
962     /* Specific types: */
963     switch (vfb_type) {
964     case VFB_DEC_VFB01:
965     /* DECstation VFB01 (monochrome) */
966     d->xsize = 2048; d->visible_xsize = 1024;
967     d->ysize = 1024; d->visible_ysize = 864;
968     d->bit_depth = 1;
969     break;
970     case VFB_DEC_VFB02:
971     /* DECstation VFB02 (color) */
972     d->xsize = 1024; d->visible_xsize = 1024;
973     d->ysize = 1024; d->visible_ysize = 864;
974     d->bit_depth = 8;
975     break;
976     case VFB_DEC_MAXINE:
977     /* DECstation Maxine (1024x768x8) */
978     d->xsize = 1024; d->visible_xsize = d->xsize;
979     d->ysize = 768; d->visible_ysize = d->ysize;
980     d->bit_depth = 8;
981     break;
982     case VFB_PLAYSTATION2:
983     /* Playstation 2 */
984     d->xsize = xsize; d->visible_xsize = d->xsize;
985     d->ysize = ysize; d->visible_ysize = d->ysize;
986     d->bit_depth = 24;
987     break;
988     default:
989     ;
990     }
991    
992     if (d->bit_depth == 2 || d->bit_depth == 4)
993     set_grayscale_palette(d, 1 << d->bit_depth);
994     else if (d->bit_depth == 8 || d->bit_depth == 1)
995     set_blackwhite_palette(d, 1 << d->bit_depth);
996    
997     d->vfb_scaledown = machine->x11_scaledown;
998    
999     d->bytes_per_line = d->xsize * d->bit_depth / 8;
1000     size = d->ysize * d->bytes_per_line;
1001    
1002     d->framebuffer = malloc(size);
1003     if (d->framebuffer == NULL) {
1004     fprintf(stderr, "out of memory\n");
1005     exit(1);
1006     }
1007    
1008     /* Clear the framebuffer (all black pixels): */
1009     d->framebuffer_size = size;
1010     memset(d->framebuffer, 0, size);
1011    
1012     d->x11_xsize = d->visible_xsize / d->vfb_scaledown;
1013     d->x11_ysize = d->visible_ysize / d->vfb_scaledown;
1014    
1015     d->update_x1 = d->update_y1 = 99999;
1016     d->update_x2 = d->update_y2 = -1;
1017    
1018    
1019     /* A nice bootup logo: */
1020     if (logo) {
1021     int logo_bottom_margin = LOGO_BOTTOM_MARGIN;
1022    
1023     d->update_x1 = 0;
1024     d->update_x2 = LOGO_XSIZE-1;
1025     d->update_y1 = d->visible_ysize-LOGO_YSIZE-logo_bottom_margin;
1026     d->update_y2 = d->visible_ysize-logo_bottom_margin;
1027     for (y=0; y<LOGO_YSIZE; y++)
1028     for (x=0; x<LOGO_XSIZE; x++) {
1029     int s, a = ((y + d->visible_ysize - LOGO_YSIZE
1030     - logo_bottom_margin)*d->xsize + x)
1031     * d->bit_depth / 8;
1032     int b = fb_logo[(y*LOGO_XSIZE+x) / 8] &
1033     (128 >> (x&7));
1034     for (s=0; s<d->bit_depth / 8; s++)
1035 dpavlin 10 if (a+s >= 0 && a+s < size)
1036     d->framebuffer[a+s] = b? 0:255;
1037 dpavlin 4 }
1038     }
1039    
1040 dpavlin 6 /* Don't set the title to include the size of the framebuffer for
1041     VGA, since then the resolution might change during runtime. */
1042     if (strcmp(name, "VGA") == 0)
1043     snprintf(title, sizeof(title),"GXemul: %s framebuffer", name);
1044     else
1045     snprintf(title, sizeof(title),"GXemul: %ix%ix%i %s framebuffer",
1046     d->visible_xsize, d->visible_ysize, d->bit_depth, name);
1047 dpavlin 4 title[sizeof(title)-1] = '\0';
1048    
1049     #ifdef WITH_X11
1050     if (machine->use_x11)
1051     d->fb_window = x11_fb_init(d->x11_xsize, d->x11_ysize,
1052     title, machine->x11_scaledown, machine);
1053     else
1054     #endif
1055     d->fb_window = NULL;
1056    
1057 dpavlin 10 nlen = strlen(name) + 10;
1058     name2 = malloc(nlen);
1059 dpavlin 4 if (name2 == NULL) {
1060     fprintf(stderr, "out of memory in dev_fb_init()\n");
1061     exit(1);
1062     }
1063 dpavlin 10 snprintf(name2, nlen, "fb [%s]", name);
1064 dpavlin 4
1065     flags = MEM_DEFAULT;
1066     if ((baseaddr & 0xfff) == 0)
1067     flags = MEM_BINTRANS_OK | MEM_BINTRANS_WRITE_OK;
1068    
1069 dpavlin 6 flags |= MEM_READING_HAS_NO_SIDE_EFFECTS;
1070    
1071 dpavlin 4 memory_device_register(mem, name2, baseaddr, size, dev_fb_access,
1072     d, flags, d->framebuffer);
1073    
1074     machine_add_tickfunction(machine, dev_fb_tick, d, FB_TICK_SHIFT);
1075     return d;
1076     }
1077    

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