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root/cebix/BasiliskII/src/Unix/video_vosf.h

Comparing BasiliskII/src/Unix/video_vosf.h (file contents):
Revision 1.36 by gbeauche, 2004-01-04T06:11:49Z vs.
Revision 1.55 by gbeauche, 2005-11-21T23:38:46Z

#	Line 1 | Line 1
1		/*
2		*  video_vosf.h - Video/graphics emulation, video on SEGV signals support
3		*
4	<	*  Basilisk II (C) 1997-2002 Christian Bauer
4	>	*  Basilisk II (C) 1997-2005 Christian Bauer
5		*
6		*  This program is free software; you can redistribute it and/or modify
7		*  it under the terms of the GNU General Public License as published by
#	Line 24 | Line 24
24		// Note: this file must be #include'd only in video_x.cpp
25		#ifdef ENABLE_VOSF
26
27	–	#include <fcntl.h>
28	–	#include <sys/mman.h>
27		#include "sigsegv.h"
28		#include "vm_alloc.h"
29	+	#ifdef _WIN32
30	+	#include "util_windows.h"
31	+	#endif
32
33	<	// Glue for SheepShaver and BasiliskII
34	<	#if POWERPC_ROM
35	<	#define X11_MONITOR_INIT                /* nothing */
36	<	#define VIDEO_DRV_INIT                  /* nothing */
33	>	// Glue for SDL and X11 support
34	>	#ifdef USE_SDL_VIDEO
35	>	#define MONITOR_INIT                    SDL_monitor_desc &monitor
36	>	#define VIDEO_DRV_WIN_INIT              driver_window *drv
37	>	#define VIDEO_DRV_DGA_INIT              driver_fullscreen *drv
38	>	#define VIDEO_DRV_LOCK_PIXELS   SDL_VIDEO_LOCK_SURFACE(drv->s)
39	>	#define VIDEO_DRV_UNLOCK_PIXELS SDL_VIDEO_UNLOCK_SURFACE(drv->s)
40	>	#define VIDEO_DRV_DEPTH                 drv->s->format->BitsPerPixel
41	>	#define VIDEO_DRV_WIDTH                 drv->s->w
42	>	#define VIDEO_DRV_HEIGHT                drv->s->h
43	>	#define VIDEO_DRV_ROW_BYTES             drv->s->pitch
44	>	#else
45	>	#ifdef SHEEPSHAVER
46	>	#define MONITOR_INIT                    /* nothing */
47	>	#define VIDEO_DRV_WIN_INIT              /* nothing */
48	>	#define VIDEO_DRV_DGA_INIT              /* nothing */
49		#define VIDEO_DRV_WINDOW                the_win
50		#define VIDEO_DRV_GC                    the_gc
51		#define VIDEO_DRV_IMAGE                 img
52		#define VIDEO_DRV_HAVE_SHM              have_shm
40	–	#define VIDEO_MODE_INIT                 VideoInfo const & mode = VModes[cur_mode]
41	–	#define VIDEO_MODE_ROW_BYTES    mode.viRowBytes
42	–	#define VIDEO_MODE_X                    mode.viXsize
43	–	#define VIDEO_MODE_Y                    mode.viYsize
44	–	#define VIDEO_MODE_DEPTH                mode.viAppleMode
45	–	enum {
46	–	VIDEO_DEPTH_1BIT = APPLE_1_BIT,
47	–	VIDEO_DEPTH_2BIT = APPLE_2_BIT,
48	–	VIDEO_DEPTH_4BIT = APPLE_4_BIT,
49	–	VIDEO_DEPTH_8BIT = APPLE_8_BIT,
50	–	VIDEO_DEPTH_16BIT = APPLE_16_BIT,
51	–	VIDEO_DEPTH_32BIT = APPLE_32_BIT
52	–	};
53		#else
54	<	#define X11_MONITOR_INIT                X11_monitor_desc &monitor
55	<	#define VIDEO_DRV_INIT                  driver_window *drv
54	>	#define MONITOR_INIT                    X11_monitor_desc &monitor
55	>	#define VIDEO_DRV_WIN_INIT              driver_window *drv
56	>	#define VIDEO_DRV_DGA_INIT              driver_dga *drv
57		#define VIDEO_DRV_WINDOW                drv->w
58		#define VIDEO_DRV_GC                    drv->gc
59		#define VIDEO_DRV_IMAGE                 drv->img
60		#define VIDEO_DRV_HAVE_SHM              drv->have_shm
61	<	#define VIDEO_MODE_INIT                 video_mode const & mode = drv->monitor.get_current_mode();
62	<	#define VIDEO_MODE_ROW_BYTES    mode.bytes_per_row
63	<	#define VIDEO_MODE_X                    mode.x
64	<	#define VIDEO_MODE_Y                    mode.y
65	<	#define VIDEO_MODE_DEPTH                (int)mode.depth
66	<	enum {
67	<	VIDEO_DEPTH_1BIT = VDEPTH_1BIT,
67	<	VIDEO_DEPTH_2BIT = VDEPTH_2BIT,
68	<	VIDEO_DEPTH_4BIT = VDEPTH_4BIT,
69	<	VIDEO_DEPTH_8BIT = VDEPTH_8BIT,
70	<	VIDEO_DEPTH_16BIT = VDEPTH_16BIT,
71	<	VIDEO_DEPTH_32BIT = VDEPTH_32BIT
72	<	};
61	>	#endif
62	>	#define VIDEO_DRV_LOCK_PIXELS   /* nothing */
63	>	#define VIDEO_DRV_UNLOCK_PIXELS /* nothing */
64	>	#define VIDEO_DRV_DEPTH                 VIDEO_DRV_IMAGE->depth
65	>	#define VIDEO_DRV_WIDTH                 VIDEO_DRV_IMAGE->width
66	>	#define VIDEO_DRV_HEIGHT                VIDEO_DRV_IMAGE->height
67	>	#define VIDEO_DRV_ROW_BYTES             VIDEO_DRV_IMAGE->bytes_per_line
68		#endif
69
70		// Variables for Video on SEGV support
#	Line 88 | Line 83 | struct ScreenInfo {
83		uint32 pageCount;                   // Number of pages allocated to the screen
84
85		bool dirty;                                     // Flag: set if the frame buffer was touched
86	+	bool very_dirty;                        // Flag: set if the frame buffer was completely modified (e.g. colormap changes)
87		char * dirtyPages;                  // Table of flags set if page was altered
88		ScreenPageInfo * pageInfo;  // Table of mappings page -> Mac scanlines
89		};
#	Line 133 | Line 129 | static ScreenInfo mainBuffer;
129		#define PFLAG_CLEAR_ALL do { \
130		PFLAG_CLEAR_RANGE(0, mainBuffer.pageCount); \
131		mainBuffer.dirty = false; \
132	+	mainBuffer.very_dirty = false; \
133	+	} while (0)
134	+
135	+	#define PFLAG_SET_VERY_DIRTY do { \
136	+	mainBuffer.very_dirty = true; \
137		} while (0)
138
139		// Set the following macro definition to 1 if your system
#	Line 167 | Line 168 | static inline int find_next_page_clear(i
168		#endif
169		}
170
171	<	#ifdef HAVE_SPINLOCKS
171	<	static spinlock_t vosf_lock = SPIN_LOCK_UNLOCKED;                               // Mutex to protect frame buffer (dirtyPages in fact)
172	<	#define LOCK_VOSF spin_lock(&vosf_lock)
173	<	#define UNLOCK_VOSF spin_unlock(&vosf_lock)
174	<	#elif defined(HAVE_PTHREADS)
171	>	#if defined(HAVE_PTHREADS)
172		static pthread_mutex_t vosf_lock = PTHREAD_MUTEX_INITIALIZER;   // Mutex to protect frame buffer (dirtyPages in fact)
173		#define LOCK_VOSF pthread_mutex_lock(&vosf_lock);
174		#define UNLOCK_VOSF pthread_mutex_unlock(&vosf_lock);
175	+	#elif defined(_WIN32)
176	+	static mutex_t vosf_lock;                                                                               // Mutex to protect frame buffer (dirtyPages in fact)
177	+	#define LOCK_VOSF vosf_lock.lock();
178	+	#define UNLOCK_VOSF vosf_lock.unlock();
179	+	#elif defined(HAVE_SPINLOCKS)
180	+	static spinlock_t vosf_lock = SPIN_LOCK_UNLOCKED;                               // Mutex to protect frame buffer (dirtyPages in fact)
181	+	#define LOCK_VOSF spin_lock(&vosf_lock)
182	+	#define UNLOCK_VOSF spin_unlock(&vosf_lock)
183		#else
184		#define LOCK_VOSF
185		#define UNLOCK_VOSF
#	Line 194 | Line 199 | static int log_base_2(uint32 x)
199		// Extend size to page boundary
200		static uint32 page_extend(uint32 size)
201		{
202	<	const uint32 page_size = getpagesize();
202	>	const uint32 page_size = vm_get_page_size();
203		const uint32 page_mask = page_size - 1;
204		return (size + page_mask) & ~page_mask;
205		}
206
207
208		/*
209	+	*  Check if VOSF acceleration is profitable on this platform
210	+	*/
211	+
212	+	const int VOSF_PROFITABLE_TRIES = 3;                    // Make 3 attempts for full screen update
213	+	const int VOSF_PROFITABLE_THRESHOLD = 16667;    // 60 Hz
214	+
215	+	static bool video_vosf_profitable(void)
216	+	{
217	+	int64 durations[VOSF_PROFITABLE_TRIES];
218	+	int mean_duration = 0;
219	+
220	+	for (int i = 0; i < VOSF_PROFITABLE_TRIES; i++) {
221	+	uint64 start = GetTicks_usec();
222	+	for (int p = 0; p < mainBuffer.pageCount; p++) {
223	+	uint8 *addr = (uint8 *)(mainBuffer.memStart + (p * mainBuffer.pageSize));
224	+	addr[0] = 0; // Trigger Screen_fault_handler()
225	+	}
226	+	int64 duration = GetTicks_usec() - start;
227	+	mean_duration += duration;
228	+	durations[i] = duration;
229	+
230	+	PFLAG_CLEAR_ALL;
231	+	mainBuffer.dirty = false;
232	+	if (vm_protect((char *)mainBuffer.memStart, mainBuffer.memLength, VM_PAGE_READ) != 0)
233	+	return false;
234	+	}
235	+
236	+	mean_duration /= VOSF_PROFITABLE_TRIES;
237	+	D(bug("Triggered %d screen faults in %ld usec on average\n", mainBuffer.pageCount, mean_duration));
238	+	return (mean_duration < (VOSF_PROFITABLE_THRESHOLD * (frame_skip ? frame_skip : 1)));
239	+	}
240	+
241	+
242	+	/*
243		*  Initialize the VOSF system (mainBuffer structure, SIGSEGV handler)
244		*/
245
246	<	static bool video_vosf_init(X11_MONITOR_INIT)
246	>	static bool video_vosf_init(MONITOR_INIT)
247		{
248	<	VIDEO_MODE_INIT;
248	>	VIDEO_MODE_INIT_MONITOR;
249
250	<	const uintptr page_size = getpagesize();
250	>	const uintptr page_size = vm_get_page_size();
251		const uintptr page_mask = page_size - 1;
252
253		// Round up frame buffer base to page boundary
#	Line 313 | Line 352 | bool Screen_fault_handler(sigsegv_addres
352		*      Update display for Windowed mode and VOSF
353		*/
354
316	–	// From video_blit.cpp
317	–	extern void (*Screen_blit)(uint8 * dest, const uint8 * source, uint32 length);
318	–	extern bool Screen_blitter_init(XVisualInfo * visual_info, bool native_byte_order, int mac_depth);
319	–	extern uint32 ExpandMap[256];
320	–
355		/*      How can we deal with array overrun conditions ?
356
357		The state of the framebuffer pages that have been touched are maintained
#	Line 351 | Line 385 | There are two cases to check:
385		than pageCount.
386		*/
387
388	<	static inline void update_display_window_vosf(VIDEO_DRV_INIT)
388	>	static void update_display_window_vosf(VIDEO_DRV_WIN_INIT)
389		{
390		VIDEO_MODE_INIT;
391
#	Line 373 | Line 407 | static inline void update_display_window
407		const int y1 = mainBuffer.pageInfo[first_page].top;
408		const int y2 = mainBuffer.pageInfo[page - 1].bottom;
409		const int height = y2 - y1 + 1;
376	–
377	–	if (VIDEO_MODE_DEPTH < VIDEO_DEPTH_8BIT) {
378	–
379	–	// Update the_host_buffer and copy of the_buffer
380	–	const int src_bytes_per_row = VIDEO_MODE_ROW_BYTES;
381	–	const int dst_bytes_per_row = VIDEO_DRV_IMAGE->bytes_per_line;
382	–	const int pixels_per_byte = VIDEO_MODE_X / src_bytes_per_row;
383	–	int i1 = y1 * src_bytes_per_row, i2 = y1 * dst_bytes_per_row, j;
384	–	for (j = y1; j <= y2; j++) {
385	–	Screen_blit(the_host_buffer + i2, the_buffer + i1, VIDEO_MODE_X / pixels_per_byte);
386	–	i1 += src_bytes_per_row;
387	–	i2 += dst_bytes_per_row;
388	–	}
410
411	<	} else {
412	<
413	<	// Update the_host_buffer and copy of the_buffer
414	<	const int src_bytes_per_row = VIDEO_MODE_ROW_BYTES;
415	<	const int dst_bytes_per_row = VIDEO_DRV_IMAGE->bytes_per_line;
416	<	const int bytes_per_pixel = src_bytes_per_row / VIDEO_MODE_X;
417	<	int i1 = y1 * src_bytes_per_row, i2 = y1 * dst_bytes_per_row, j;
418	<	for (j = y1; j <= y2; j++) {
419	<	Screen_blit(the_host_buffer + i2, the_buffer + i1, bytes_per_pixel * VIDEO_MODE_X);
399	<	i1 += src_bytes_per_row;
400	<	i2 += dst_bytes_per_row;
401	<	}
411	>	// Update the_host_buffer
412	>	VIDEO_DRV_LOCK_PIXELS;
413	>	const int src_bytes_per_row = VIDEO_MODE_ROW_BYTES;
414	>	const int dst_bytes_per_row = VIDEO_DRV_ROW_BYTES;
415	>	int i1 = y1 * src_bytes_per_row, i2 = y1 * dst_bytes_per_row, j;
416	>	for (j = y1; j <= y2; j++) {
417	>	Screen_blit(the_host_buffer + i2, the_buffer + i1, src_bytes_per_row);
418	>	i1 += src_bytes_per_row;
419	>	i2 += dst_bytes_per_row;
420		}
421	+	VIDEO_DRV_UNLOCK_PIXELS;
422
423	+	#ifdef USE_SDL_VIDEO
424	+	SDL_UpdateRect(drv->s, 0, y1, VIDEO_MODE_X, height);
425	+	#else
426		if (VIDEO_DRV_HAVE_SHM)
427		XShmPutImage(x_display, VIDEO_DRV_WINDOW, VIDEO_DRV_GC, VIDEO_DRV_IMAGE, 0, y1, 0, y1, VIDEO_MODE_X, height, 0);
428		else
429		XPutImage(x_display, VIDEO_DRV_WINDOW, VIDEO_DRV_GC, VIDEO_DRV_IMAGE, 0, y1, 0, y1, VIDEO_MODE_X, height);
430	+	#endif
431		}
432		mainBuffer.dirty = false;
433		}
#	Line 416 | Line 439 | static inline void update_display_window
439		*/
440
441		#if REAL_ADDRESSING || DIRECT_ADDRESSING
442	<	static inline void update_display_dga_vosf(void)
442	>	static void update_display_dga_vosf(VIDEO_DRV_DGA_INIT)
443		{
444		VIDEO_MODE_INIT;
445
446	<	int page = 0;
446	>	// Compute number of bytes per row, take care to virtual screens
447	>	const int src_bytes_per_row = VIDEO_MODE_ROW_BYTES;
448	>	const int dst_bytes_per_row = TrivialBytesPerRow(VIDEO_MODE_X, DepthModeForPixelDepth(VIDEO_DRV_DEPTH));
449	>	const int scr_bytes_per_row = VIDEO_DRV_ROW_BYTES;
450	>	assert(dst_bytes_per_row <= scr_bytes_per_row);
451	>	const int scr_bytes_left = scr_bytes_per_row - dst_bytes_per_row;
452	>
453	>	// Full screen update requested?
454	>	if (mainBuffer.very_dirty) {
455	>	PFLAG_CLEAR_ALL;
456	>	vm_protect((char *)mainBuffer.memStart, mainBuffer.memLength, VM_PAGE_READ);
457	>	memcpy(the_buffer_copy, the_buffer, VIDEO_MODE_ROW_BYTES * VIDEO_MODE_Y);
458	>	VIDEO_DRV_LOCK_PIXELS;
459	>	int i1 = 0, i2 = 0;
460	>	for (int j = 0;  j < VIDEO_MODE_Y; j++) {
461	>	Screen_blit(the_host_buffer + i2, the_buffer + i1, src_bytes_per_row);
462	>	i1 += src_bytes_per_row;
463	>	i2 += scr_bytes_per_row;
464	>	}
465	>	#ifdef USE_SDL_VIDEO
466	>	SDL_UpdateRect(drv->s, 0, 0, VIDEO_MODE_X, VIDEO_MODE_Y);
467	>	#endif
468	>	VIDEO_DRV_UNLOCK_PIXELS;
469	>	return;
470	>	}
471	>
472	>	// Setup partial blitter (use 64-pixel wide chunks)
473	>	const int n_pixels = 64;
474	>	const int n_chunks = VIDEO_MODE_X / n_pixels;
475	>	const int n_pixels_left = VIDEO_MODE_X - (n_chunks * n_pixels);
476	>	const int src_chunk_size = src_bytes_per_row / n_chunks;
477	>	const int dst_chunk_size = dst_bytes_per_row / n_chunks;
478	>	const int src_chunk_size_left = src_bytes_per_row - (n_chunks * src_chunk_size);
479	>	const int dst_chunk_size_left = dst_bytes_per_row - (n_chunks * dst_chunk_size);
480	>
481	>	int page = 0, last_scanline = -1;
482		for (;;) {
483		const unsigned first_page = find_next_page_set(page);
484		if (first_page >= mainBuffer.pageCount)
#	Line 433 | Line 491 | static inline void update_display_dga_vo
491		const int32 offset  = first_page << mainBuffer.pageBits;
492		const uint32 length = (page - first_page) << mainBuffer.pageBits;
493		vm_protect((char *)mainBuffer.memStart + offset, length, VM_PAGE_READ);
494	<
495	<	// I am sure that y2 >= y1 and depth != 1
496	<	const int y1 = mainBuffer.pageInfo[first_page].top;
497	<	const int y2 = mainBuffer.pageInfo[page - 1].bottom;
498	<
499	<	const int bytes_per_row = VIDEO_MODE_ROW_BYTES;
500	<	const int bytes_per_pixel = VIDEO_MODE_ROW_BYTES / VIDEO_MODE_X;
501	<	int i, j;
502	<
503	<	// Check for first column from left and first column
504	<	// from right that have changed
505	<	int x1 = VIDEO_MODE_X * bytes_per_pixel - 1;
506	<	for (j = y1; j <= y2; j++) {
507	<	uint8 * const p1 = &the_buffer[j * bytes_per_row];
508	<	uint8 * const p2 = &the_buffer_copy[j * bytes_per_row];
509	<	for (i = 0; i < x1; i++) {
510	<	if (p1[i] != p2[i]) {
511	<	x1 = i;
512	<	break;
494	>
495	>	// Optimized for scanlines, don't process overlapping lines again
496	>	int y1 = mainBuffer.pageInfo[first_page].top;
497	>	int y2 = mainBuffer.pageInfo[page - 1].bottom;
498	>	if (y1 <= last_scanline && ++y1 >= VIDEO_MODE_Y)
499	>	continue;
500	>	if (y2 <= last_scanline && ++y2 >= VIDEO_MODE_Y)
501	>	continue;
502	>	last_scanline = y2;
503	>
504	>	// Update the_host_buffer and copy of the_buffer, one line at a time
505	>	int i1 = y1 * src_bytes_per_row;
506	>	int i2 = y1 * scr_bytes_per_row;
507	>	#ifdef USE_SDL_VIDEO
508	>	int bbi = 0;
509	>	SDL_Rect bb[3] = {
510	>	{ VIDEO_MODE_X, y1, 0, 0 },
511	>	{ VIDEO_MODE_X, -1, 0, 0 },
512	>	{ VIDEO_MODE_X, -1, 0, 0 }
513	>	};
514	>	#endif
515	>	VIDEO_DRV_LOCK_PIXELS;
516	>	for (int j = y1; j <= y2; j++) {
517	>	for (int i = 0; i < n_chunks; i++) {
518	>	if (memcmp(the_buffer_copy + i1, the_buffer + i1, src_chunk_size) != 0) {
519	>	memcpy(the_buffer_copy + i1, the_buffer + i1, src_chunk_size);
520	>	Screen_blit(the_host_buffer + i2, the_buffer + i1, src_chunk_size);
521	>	#ifdef USE_SDL_VIDEO
522	>	const int x = i * n_pixels;
523	>	if (x < bb[bbi].x) {
524	>	if (bb[bbi].w)
525	>	bb[bbi].w += bb[bbi].x - x;
526	>	else
527	>	bb[bbi].w = n_pixels;
528	>	bb[bbi].x = x;
529	>	}
530	>	else if (x >= bb[bbi].x + bb[bbi].w)
531	>	bb[bbi].w = x + n_pixels - bb[bbi].x;
532	>	#endif
533		}
534	+	i1 += src_chunk_size;
535	+	i2 += dst_chunk_size;
536		}
537	<	}
538	<	x1 /= bytes_per_pixel;
539	<
540	<	int x2 = x1 * bytes_per_pixel;
541	<	for (j = y2; j >= y1; j--) {
542	<	uint8 * const p1 = &the_buffer[j * bytes_per_row];
543	<	uint8 * const p2 = &the_buffer_copy[j * bytes_per_row];
544	<	for (i = VIDEO_MODE_X * bytes_per_pixel - 1; i > x2; i--) {
545	<	if (p1[i] != p2[i]) {
546	<	x2 = i;
547	<	break;
537	>	if (src_chunk_size_left && dst_chunk_size_left) {
538	>	if (memcmp(the_buffer_copy + i1, the_buffer + i1, src_chunk_size_left) != 0) {
539	>	memcpy(the_buffer_copy + i1, the_buffer + i1, src_chunk_size_left);
540	>	Screen_blit(the_host_buffer + i2, the_buffer + i1, src_chunk_size_left);
541	>	}
542	>	i1 += src_chunk_size_left;
543	>	i2 += dst_chunk_size_left;
544	>	#ifdef USE_SDL_VIDEO
545	>	const int x = n_chunks * n_pixels;
546	>	if (x < bb[bbi].x) {
547	>	if (bb[bbi].w)
548	>	bb[bbi].w += bb[bbi].x - x;
549	>	else
550	>	bb[bbi].w = n_pixels_left;
551	>	bb[bbi].x = x;
552		}
553	+	else if (x >= bb[bbi].x + bb[bbi].w)
554	+	bb[bbi].w  = x + n_pixels_left - bb[bbi].x;
555	+	#endif
556		}
557	+	i2 += scr_bytes_left;
558	+	#ifdef USE_SDL_VIDEO
559	+	bb[bbi].h++;
560	+	if (bb[bbi].w && (j == y1 || j == y2 - 1 || j == y2)) {
561	+	bbi++;
562	+	assert(bbi <= 3);
563	+	if (j != y2)
564	+	bb[bbi].y = j + 1;
565	+	}
566	+	#endif
567		}
568	<	x2 /= bytes_per_pixel;
569	<
570	<	// Update the_host_buffer and copy of the_buffer
571	<	// There should be at least one pixel to copy
475	<	const int width = x2 - x1 + 1;
476	<	i = y1 * bytes_per_row + x1 * bytes_per_pixel;
477	<	for (j = y1; j <= y2; j++) {
478	<	Screen_blit(the_host_buffer + i, the_buffer + i, bytes_per_pixel * width);
479	<	memcpy(the_buffer_copy + i, the_buffer + i, bytes_per_pixel * width);
480	<	i += bytes_per_row;
481	<	}
568	>	#ifdef USE_SDL_VIDEO
569	>	SDL_UpdateRects(drv->s, bbi, bb);
570	>	#endif
571	>	VIDEO_DRV_UNLOCK_PIXELS;
572		}
573		mainBuffer.dirty = false;
574		}

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